Gossen MetraWatt PROFITEST Series User manual

Operating Instructions
PROFITEST MASTER Series
PROFITEST MTECH+,MPRO,MXTRA, MBASE+
IEC 60364-6, EN 50110-1 3-349-647-03
16/2.23

2Gossen Metrawatt GmbH
Table of Contents Page Page
1 Safety Instructions .............................................................. 4
2 Applications......................................................................... 5
2.1 Intended Use / Use for Intended Purpose ............5
2.2 Use for Other than Intended Purpose...................5
2.3 Liability and Guarantee.........................................5
2.4 Opening the Instrument / Repairs.........................5
2.5 Scope of Functions ..............................................5
3 Documentation.................................................................... 6
4 Getting Started .................................................................... 6
5 The Instrument.................................................................... 7
5.1 Scope of Delivery .................................................7
5.2 Optional Accessories (excerpt) .............................7
5.3 Meanings of Symbols on the Instrument...............7
5.4 Instrument Overview ............................................8
5.5 Technical Data ...................................................10
5.6 Characteristic Values for PROFITEST MTECH+ and
PROFITEST MBASE+ ........................................11
5.7 Characteristic Values for PROFITEST MXTRA and
PROFITEST MPRO13
6 Operating and Display Elements ....................................... 16
6.1 Control Panel .....................................................16
6.2 Display...............................................................16
6.3 LEDs..................................................................16
6.4 LED Indications, Mains Connections and Potential
Differences.........................................................17
7 Operation........................................................................... 26
7.1 Power Supply ....................................................26
7.1.1 Inserting or Replacing the Battery Pack (Z502H)
or Commercially Available Individual (Recharge-
able) Batteries..............................................26
7.1.2 Charging the Battery Pack (Z502H) in the Tes-
ter................................................................26
7.2 Switching the Instrument On/Off ........................26
8 Instrument Settings........................................................... 27
9 Database ........................................................................... 32
9.1 Creating Distributor Structures, General .............32
9.2 Transferring Distributor Structures......................32
9.3 Creating a Distributor Structure in the Test Instru-
ment ..................................................................32
9.3.1 Creating Structures (example for electrical cir-
cuit)..............................................................34
9.3.2 Searching for Structure Elements ..............35
9.4 Saving Data and Generating Reports .................35
9.5 Use of Barcode Scanners and RFID Readers.....36
10 General Information on Measurements............................. 37
10.1 Using Cable Sets and Test Probes.....................37
10.2 Test Plug – Changing Inserts..............................37
10.3 Connecting the Instrument.................................37
10.4 Automatic Settings, Monitoring and Shutdown...37
10.5 Measured Value Display and Memory ................37
10.6 Help Function.....................................................38
10.7 Setting Parameters or Limit Values using RCD
Measurement as an Example .............................39
10.8 Freely Selectable Parameter Settings or Limit
Values ............................................................... 40
10.8.1 Changing Existing Parameters .................... 40
10.8.2 Adding New Parameters ............................. 40
10.9 2-Pole Measurement with Rapid or
Semiautomatic Polarity Reversal........................ 41
11 Measuring Voltage and Frequency.................................... 42
11.1 Single-Phase Measurement............................... 42
11.1.1 Voltage Between L and N (UL-N),
L and PE
(UL-PE) a
nd N and PE (UN-PE) with Country-
Specific Plug Insert, e.g. SCHUKO.............. 42
11.1.2 Voltage Between L – PE, N – PE and L – L
with 2-Pole Adapter Connection ................. 42
11.2 3-Phase Measurement (line-to-line voltage) and
Phase Sequence............................................... 42
12
Testing RCDs .......................................................................... 44
12.1 Measuring Touch Voltage (with reference to nomi-
nal residual current) with ⅓ Nominal Residual Cur-
rent and Tripping Test with Nominal Residual
Current.............................................................. 45
12.2
Special Tests for Systems and RCDs.....................47
12.2.1 Testing Systems and RCCBs with Rising
Residual Current (AC) for Type AC, A/F, B/B+
and EV/MI RCDs
(PROFITEST MTECH+, PROFITEST MXTRA
only)............................................................ 47
12.2.2 Testing Systems and RCCBs with Rising
Residual Current (AC) for Type B/B+ and EV/MI
RCDs (PROFITEST MTECH+PROFITEST MX-
TRA)............................................................ 48
12.2.3 Testing RCCBS with 5 × IN....................... 48
12.2.4 Testing of RCCBs
which are Suitable for Pulsating DC Residual
Current ....................................................... 49
12.3 Testing of Special RCDs.................................... 49
12.3.1 Systems with Type RCD-S Selective RCCBs ..
49
12.3.2 PRCDs with Non-Linear Type PRCD-K Ele-
ments ......................................................... 50
12.3.3 SRCD, PRCD-S (SCHUKOMAT, SIDOS or
comparable)................................................ 51
12.3.4 Type G or R RCCB ..................................... 51
12.4 Testing Residual Current Circuit Breakers in TN-S
Systems............................................................ 52
12.5 Testing of RCD Protection in IT Systems with High
Cable Capacitance (e.g. In Norway)................... 53
12.6 Testing of 6 mA Residual Current Devices RDC-
DD/RCMB
(RDC-DD: PROFITEST MXTRA and PROFITEST
MTECH+ only)................................................... 53
13 Testing of Breaking Requirements for Overcurrent Protective
Devices, Measurement of Loop Impedance and Determina-
tion of Short-Circuit Current (ZL-PE and ISC Functions)..... 55
13.1 Measurements with Suppression of RCD
Tripping (PROFITEST MTECH+, PROFITEST
MXTRA only) ..................................................... 55
13.1.1 Measurement with Positive Half-Waves (PROF-
ITEST MTECH+, PROFITEST MXTRA only) . 56

Gossen Metrawatt GmbH 3
13.2 Evaluation of Measured Values...........................56
13.3 Settings for Calculating Short-Circuit Current
– Parameter ISC ...............................................57
14 Measuring Supply Impedance (ZL-N Function)...................58
15 Earthing Resistance Measurement (Function RE) ..............60
15.1 Earthing Resistance Measurement – Mains
Powered ............................................................61
15.2 Earthing Resistance Measurement – Battery Pow-
ered, “Battery Mode” (PROFITEST MPRO & PROF-
ITEST MXTRA only)............................................61
15.3
Earthing Resistance, Mains Powered – 2-Pole Mea-
surement with 2-Pole Adapter or Country-Specific
Plug (Schuko) without Probe
.............................62
15.4 Earthing Resistance Measurement. Mains Powered
– 3-Pole Measurement: 2-Pole Adapter with
Probe ................................................................63
15.5 Earthing Resistance Measurement, Mains
Powered – Measuring Earth Electrode Potential
(UEFunction)......................................................64
15.6 Earthing Resistance Measurement, Mains Powered
– Selective Earthing Resistance Measurement with
Current Clamp Sensor as Accessory..................65
15.7 Earthing Resistance Measurement, Battery Pow-
ered, “Battery Mode” – 3-Pole (PROFITEST MPRO
& PROFITEST MXTRA only) ...............................67
15.8
Earthing Resistance Measurement, Battery Powered,
“Battery Mode” – 4-Pole (
PROFITEST MPRO &
PROFITEST MXTRA only) .................................... 68
15.9 Earthing Resistance Measurement, Battery Pow-
ered, “Battery Mode” – Selective (4-pole)
with Current Clamp Sensor and PRO-RE Measur-
ing Adapter as Accessory (PROFITEST MPRO &
PROFITEST MXTRA only)...................................70
15.10Earthing Resistance Measurement, Battery Pow-
ered, “Battery Mode” – Ground Loop Measurement
(with current clamp sensor and transformer, and
pro-re measuring adapter as accessory) (PROFIT-
EST MPRO & PROFITEST MXTRA only).............71
15.11Earthing Resistance Measurement, Battery Pow-
ered, “Battery Mode” – Measurement of Soil
Resistivity E(PROFITEST MPRO & PROFITEST
MXTRA only) ......................................................72
16
Measurement of Insulation Resistance...................................74
16.1 General..............................................................74
16.2 Special Case: Earth Leakage Resistance (REISO)76
17
Measuring Low-Value Resistance of up to 200  (Protective
Conductor and Equipotential Bonding Conductor) ..................78
17.1 Measurement with Constant Test Current..........79
17.2 Protective Conductor Resistance Measurement
with Ramp Sequence
– Measurement at PRCDs with Current-Monitored
Protective Conductor using the PROFITEST PRCD
Test Adapter as an Accessory ( PROFITEST
MXTRA only) ......................................................80
18 Measurement with Accessory Sensors..............................81
18.1 Current Measurement with Current Clamp
Sensor...............................................................81
19 Special Functions – EXTRA Switch Position ......................82
19.1 Voltage Drop Measurement
(at ZLN) – U Function ........................................83
19.2 Measuring the Impedance of Insulating Floors and
Walls (standing surface insulation impedance) – ZST
Function.............................................................84
19.3 Testing Meter Startup with Earthing Contact Plug
– kWh Function .................................................85
19.4 Leakage Current Measurement with PRO-AB Leak-
age Current Adapter as Accessory – ILFunction
(PROFITEST MXTRA only)..................................86
19.5
Testing Insulation Monitoring Devices – IMD Function
(PROFITEST MXTRA only)..................................87
19.6 Residual Voltage Test – Ures Function(PROFITEST
MXTRA only) ......................................................89
19.7
Intelligent Ramp – ta+ID Function
( PROFITEST MXTRA only).................................... 90
19.8 Testing Residual Current Monitors
– RCM Function ( PROFITEST MXTRA only).......91
19.9 Checking the Operating Statuses of Electric
Vehicles at Charging Stations per IEC 61851
((PROFITEST MTECH+ & PROFITEST MXTRA ) .92
19.10PRCD – Test Sequences for Documenting Fault
Simulations at PRCDs with the PROFITEST PRCD
Adapter (PROFITEST MXTRA only).....................93
19.10.1Fault Simulation ...........................................93
20 Test Sequences (Automatic Test Sequences)
– AUTO Function ................................................................96
20.1 General (test sequence layouts)..........................96
20.2 Creation of Test Sequences with ETC ................96
20.3 Using Test Sequences .......................................97
21 Maintenance ......................................................................98
21.1 Test Instrument Firmware/Software....................98
21.1.1 Rechargeable Battery Care ..........................98
21.2 Fuse Replacement .............................................98
21.3 Housing .............................................................98
21.4 Calibration..........................................................98
22 Contact, Support and Service ............................................99
23 CE Declaration .................................................................100
24 Disposal and Environmental Protection ...........................101
25 Appendix ..........................................................................102
25.1 Tables for Determining Maximum and Minimum
Display Values in Consideration of the
Instrument’s Maximum Measuring and Intrinsic
Uncertainties....................................................102
25.2 At which values should/must an RCD actually be
tripped? Requirements for Residual Current
Devices (RCD)..................................................104
25.3 Testing Electrical Machines per DIN EN 60204 –
Applications, Limit Values.................................105
25.4 Periodic Testing per DGUV V 3 (previously BGV A3)
– Limit Values for Electrical Systems and Operating
Equipment .......................................................105
25.5 Bibliography .....................................................106
25.6 Internet Addresses for Additional Information ..106

4Gossen Metrawatt GmbH
1 Safety Instructions
Observe this documentation, in particular all included safety infor-
mation, in order to protect yourself and others from injury, and to
prevent damage to the instrument.
The operating instructions and the condensed operating instruc-
tions should be made available to all users.
General
• Tests/measurements may only be performed by a qualified
electrician, or under the supervision and direction of a quali-
fied electrician. The user must be instructed by a qualified
electrician concerning performance and evaluation of tests
and/or measurements.
• Observe the five safety rules in accordance with
DIN VDE 0105-100:2015-10, VDE 0105-100:2015-10
(EN 50110-1), Operation of electrical installations – Part 100:
General requirements
(1: Shut down entirely. 2: Secure against restart. 3: Assure
absence of voltage at all poles. 4: Ground and short circuit. 5:
Cover neighboring live components, or make them inaccessi-
ble).
• Observe and comply with all safety regulations which are
applicable for your work environment.
• Wear suitable and appropriate personal protective equipment
(PPE) whenever working with the instrument.
• The functioning of active medical devices (e.g. pacemakers,
defibrillators) and passive medical devices may be affected by
voltages, currents and electromagnetic fields generated by
the tester and the health of their users may be impaired.
Implement corresponding protective measures in consultation
with the manufacturer of the medical device and your physi-
cian. If any potential risk cannot be ruled out, do not use the
instrument.
Accessories
• Use only the specified accessories (included in the scope of
delivery or listed as options) with the instrument.
• Carefully and completely read and adhere to the product doc-
umentation for optional accessories. Retain these documents
for future reference.
Handling
• Use the instrument in undamaged condition only.
Inspect the instrument before use. Pay particular attention to
damage, interrupted insulation or kinked cables.
Damaged components must be replaced immediately.
• Accessories and cables may only be used as long as they’re
fully intact.
Inspect accessories and all cables before use. Pay particular
attention to damage, interrupted insulation or kinked cables.
• If the instrument or its accessories don’t function flawlessly,
permanently remove the instrument/accessories from opera-
tion and secure them against inadvertent use.
• If the instrument or accessories are damaged during use, for
example if they’re dropped, permanently remove the instru-
ment/accessories from operation and secure them against
inadvertent use.
• The instrument and the accessories may only be used for the
tests/measurements described in the documentation for the
instrument.
• Neither the integrated voltage measuring function nor the
mains connection test may be used to test systems or system
components for the absence of voltage.
Testing for the absence of voltage is only permissible with a
suitable voltage tester or voltage measuring system which ful-
fills the requirements specified in DIN EN 61243.
Operating Conditions
• Do not use the instrument and its accessories after long peri-
ods of storage under unfavorable conditions (e.g. humidity,
dust or extreme temperature).
• Do not use the instrument and its accessories after extraordi-
nary stressing due to transport.
• The instrument must not be exposed to direct sunlight.
• Only use the instrument and its accessories within the limits of
the specified technical data and conditions (ambient condi-
tions, IP protection code, measuring category etc.).
• Do not use the instrument in potentially explosive atmo-
spheres.
Rechargeable Batteries
• When using the charger, only the battery pack (Z502H) may
be inserted in the device.
• Do not use the instrument while charging the battery pack
(Z502H).
• Do not use the test instrument if the battery compartment lid
has been removed.
Touch contact with dangerous voltage is otherwise possible.
• The battery pack (Z502H) may only be charged in undamaged
condition.
Inspect the battery pack (Z502H) before use. Pay particular
attention to leaky and damaged batteries.
Fuses
• The instrument is equipped with fuses. The instrument may
only be used as long as the fuses are in flawless condition.
Defective fuses must be replaced. See detailed operating
instructions.
Measurement Cables and Establishing Contact
• Plugging in the measurement cables must not necessitate any
undue force.
• Never touch conductive ends (e.g. of test probes).
• Fully unroll all measurement cables before starting a test/mea-
surement. Never perform a test/measurement with the mea-
surement cable rolled up.
• Avoid short circuits due to incorrectly connected measure-
ment cables.
• Ensure that alligator clips, test probes or Kelvin probes make
good contact.
Data Security
• Always create a backup copy of your measurement data.
• Observe and comply with the respectively applicable national
data protection regulations. Use the corresponding functions
provided by the test instrument such as access protection, as
well as other appropriate measures.

Gossen Metrawatt GmbH 5
2 Applications
Please read this important information!
2.1 Intended Use / Use for Intended Purpose
Measuring and test instruments from the PROFITEST MASTER
series include:
• PROFITEST MBASE+ (M520S)
• PROFITEST MXTRA (M520P)
• PROFITEST MTECH+ (M520R)
• PROFITEST MPRO (M520N)
The test instruments are used to test the effectiveness of protec-
tive measures at stationary electrical systems in accordance with
IEC 60364-6, EN 50110-1 and other country-specific standards.
They can also be used for the testing of electric charging stations
per EN 61851-1 (DIN VDE 0122-1), and for earth measurements.
The test instruments include pre-programmed test sequences for
increased working convenience and user-defined test sequences
can also be programmed as an option.
The test instruments are especially well suited for testing electrical
systems during setup, initial startup, periodic testing and trouble-
shooting.
The applications range of the test instruments covers all alternat-
ing and 3-phase current systems with nominal voltages of 230/
400 V (300/500 V) and nominal frequencies of 16⅔, 50, 60, 200
and 400 Hz.
A system structure is set up in the test instrument and measured
values are assigned to the objects. Completed tests and mea-
sured values can be saved and documented in a measurement
and test report.
Safety of the operator, as well as that of the test instrument, is
only assured when it’s used for its intended purpose.
2.2 Use for Other than Intended Purpose
Using the test instrument for any purposes other than those
described in these operating instructions, or in the test instru-
ment’s condensed operating instructions, is contrary to use for
intended purpose.
2.3 Liability and Guarantee
Gossen Metrawatt GmbH assumes no liability for property dam-
age, personal injury or consequential damage resulting from
improper or incorrect use of the product, in particular due to fail-
ure to observe the product documentation. Furthermore, all guar-
antee claims are rendered null and void in such cases.
Nor does Gossen Metrawatt GmbH accept any liability for data
loss.
2.4 Opening the Instrument / Repairs
In order to ensure flawless, safe operation and to assure that the
guarantee isn’t rendered null and void, the test instrument may
only be opened by authorized, trained personnel. Even original
replacement parts may only be installed by authorized, trained
personnel.
Unauthorized modification of the test instrument is prohibited.
If it can be ascertained that the test instrument has been opened
by unauthorized personnel, no guarantee claims can be honored
by the manufacturer with regard to personal safety, measuring
accuracy, compliance with applicable safety measures or any
consequential damages.
If the guarantee seal is damaged or removed, all guarantee claims
are rendered null and void.
2.5 Scope of Functions
PROFITEST …
(Article Number)
MBASE+
(M520S) MPRO
(M520N) MTECH+
(M520R) MXTRA
(M520P)
Testing of Residual Current Devices (RCDs)
UTmeasurement without tripping the RCD ✓✓✓✓
Tripping time measurement ✓✓✓✓
Measurement of tripping current IF ✓✓✓✓
Selective, SRCDs, PRCDs, type G/R ✓✓✓✓
AC/DC sensitive RCDs, types B and B+ —— ✓✓
Testing of insulation monitoring devices (IMDs) ——— ✓
Testing of residual current monitoring devices (RCMs) ——— ✓
Testing for N-PE reversal ✓✓✓✓
Measurement of Loop Impedance ZL-PE / ZL-N
Fuse table for systems without RCDs ✓✓✓✓
Without tripping the RCD, fuse table —— ✓✓
15 mA measurement 1)
1) The so-called live measurement is only advisable if there’s no bias current within
the system. Only suitable for motor protection switches with small nominal current
values.
✓✓✓✓
Earthing resistance RE(mains operation)
I/U measuring method (2/3-wire measuring method via
measuring adapter: 2-pole/2-pole + probe)
✓✓✓✓
Earthing resistance RE (battery operation)
3 or 4-wire measuring method via PRO-RE
adapter
— ✓ — ✓
Soil resistivity rE (battery operation)
(4-wire measuring method via PRO-RE adapter)
— ✓ — ✓
Selective earthing resistance R
E (mains operation)
with 2-pole adapter, probe, earth electrode and current
clamp sensor
(3-wire measuring method)
✓✓✓✓
Selective earthing resistance R
E (battery operation)
with probe, earth electrode and current clamp sensor
(4-wire measuring method
via PRO-RE adapter and
current clamp sensor )
— ✓ — ✓
Earth loop resistance RELOOP (battery opera-
tion)
with 2 clamps (current clamp sensor direct and current
clamp transformer via PRO-RE/2 adapter)
— ✓ — ✓
Measurement of equipotential bonding RLO
Automatic polarity reversal
✓✓✓✓
Insulation resistance RINS
Variable or rising test voltage (ramp)
✓✓✓✓
Voltage UL-N / UL-PE / UN-PE / f ✓✓✓✓
Special Measurements
IL, IAMP current measurement with clamp ✓✓✓✓
Phase sequence ✓✓✓✓
Earth leakage resistance RE(INS) ✓✓✓✓
Voltage drop (U) ✓✓✓✓
Standing-surface insulation ZST ✓✓✓✓
Meter startup (kWh test) ✓✓✓✓
Leakage current with PRO-AB (IL) adapter ——— ✓
Residual voltage test (Ures) ——— ✓
Intelligent ramp (ta + I) ——— ✓
Electric vehicles at charging stations (IEC 61851-1) —— ✓✓
Documentation of fault simulations at PRCDs with the
PROFITEST PRCD adapter
——— ✓
Features
Selectable user interface language 2)
2) Currently available languages D, GB, I, F, E, P, NL, S, N, FIN, CZ, PL
✓✓✓✓
Memory (database for up to 50,000 objects) ✓✓✓✓
Automatic test sequence function ✓✓✓✓
RS 232 port for RFID/barcode reader
✓✓✓✓
USB port for data transmission ✓✓✓✓
Interface for Bluetooth® —— ✓✓
ETC PC database and report generating software ✓✓✓✓
Measuring category: CAT III 600 V / CAT IV 300 V ✓✓✓✓
DAkkS calibration certificate ✓✓✓✓

6Gossen Metrawatt GmbH
3 Documentation
This documentation describes several test instrument.
As a result, features and functions may be described which do
not apply to your instrument. Furthermore, illustrations may differ
from your instrument.
Note
These operating instructions describe a test instrument
with software/firmware version 1.16.20.
List of Abbreviations and their Meanings
RCCBs (residual current circuit breakers / RCDs):
ITripping current
INNominal residual current
IFRising test current (residual current)
PRCD Portable residual current device
PRCD-S:
with protective conductor detection and monitoring
PRCD-K:
with undervoltage trigger and protective conductor
monitoring
RCD- Selective RCCB
RECalculated earthing or earth electrode loop resistance
SRCD Socket residual current device (permanently installed)
taTime to trip / breaking time
UITouch voltage at moment of tripping
UINTouch voltage
relative to nominal residual current IN
ULTouch voltage limit value
Overcurrent protective devices:
ISC Calculated short-circuit current (at nominal voltage)
ZL-N Supply impedance
ZL-PE Loop impedance
Earthing:
RBOperational earth resistance
REMeasured earthing resistance
RELoop Earth electrode loop resistance
Low-value resistance at
protective, earthing and bonding conductors:
RLO+ Equipotential bonding conductor resistance (+ pole to
PE)
RLO– Equipotential bonding conductor resistance (– pole to
PE)
Insulation:
RE(INS) Earth leakage resistance (DIN 51953)
RINS Insulation resistance
RST Standing surface insulation resistance
ZST Standing surface insulation impedance
Current:
IABreaking current
ILLeakage current (measured with current clamp trans-
former)
IMMeasuring current
INNominal current
IPTest current
Voltage:
f Line voltage frequency
fNNominal voltage rated frequency
U Voltage drop as %
U Voltage measured at the test probes during and after
insulation measurement RINS
UBatt (Rechargeable) battery voltage
UEEarth electrode voltage
UINS When measuring RINS: test voltage for ramp function:
tripping or breakdown voltage
UL-L Voltage between two phase conductors
UL-N Voltage between L and N
UL-PE Voltage between L and PE
UNNominal line voltage
U3~ Highest measured voltage during determination of
phase sequence
US-PE Voltage between probe and PE
UYPhase-to-earth voltage
4 Getting Started
1. Read and adhere to the product documentation. In particular
observe all safety information in the documentation, on the
instrument and on the packaging.
See:
– section 1, “Safety Instructions”, on page 4
– section 2, “Applications”, on page 5
– section 3, “Documentation”, on page 6
2. Familiarize yourself with the test instrument.
See:
– section 5, “The Instrument”, on page 7
– section 6, “Operating and Display Elements”, on page 16
– section 7, “Operation”, on page 26
3. Enter the basic settings.
See section 8, “Instrument Settings”, on page 27.
4. Optional but recommended: Create a database in the test
instrument. See section 9, “Database”, on page 32.
5. Read the basic information provided in section 10, “General
Information on Measurements”, on page 37.
6. Perform measurements.
Refer to individual measurements or test sequences (auto-
matic sequences):
– section 11, “Measuring Voltage and Frequency”, on page
42
– section 12, “
Testing RCDs ”, on page 44
– section 13, “Testing of Breaking Requirements for Overcur-
rent Protective Devices, Measurement of Loop Impedance
and Determination of Short-Circuit Current (ZL-PE and ISC
Functions)”, on page 55
– section 14, “Measuring Supply Impedance (ZL-N Function)”,
on page 58
– section 15, “Earthing Resistance Measurement (Function
RE)”, on page 60
– section 16, “
Measurement of Insulation Resistance ”, on pag e
74
– section 17, “
Measuring Low-Value Resistance of up to 200 
(Protective Conductor and Equipotential Bonding Conductor) ”,
on page 78
– section 18, “Measurement with Accessory Sensors”, on
page 81
– section 19, “Special Functions – EXTRA Switch Position”,
on page 82
– section 20, “Test Sequences (Automatic Test Sequences) –
AUTO Function”, on page 96
Further interesting information: section 21, “Maintenance”, on
page 98.
S

Gossen Metrawatt GmbH 7
5 The Instrument
5.1 Scope of Delivery
Standard scope of delivery for PROFITEST MASTER series:
** Download from Internet
5.2 Optional Accessories (excerpt)
A complete overview of optional accessories including detailed
information can be found in the data sheet for the test instrument.
The most important accessories are listed here:
• Barcode Profiscanner RS232 (Z502F)
(barcode reader and scanner for RS 232 connection to the
test instrument for identifying systems, electrical circuits and
operating equipment.)
• PRO-HB (Z501V)
Holder for test probes and measuring adapter
• Country-specific plug inserts
– PRO-GB/USA (Z503B)
– PRO-CH (GTZ3225000R0001)
• Plug inserts for PE and other similar measurements
– PRO-RLO-II (Z501P)
(cable length: 10m)
– PRO-RLO 20 (Z505F)
(cable length: 20m)
– PRO-RLO 50 (Z505G)
(cable length: 50m)
• PRO-AB (Z502S)
(leakage current measuring adapter for PROFITEST MXTRA)
• PROFITEST PRCD (M512R)
(test adapter for testing portable safety switches (types
PRCD-K and PRCD-S) with the help of the PROFITEST
MXTRA)
• PROFITEST EMOBILITY (M513R)
(adapter for standards-compliant testing of single and 3-
phase, mode 2 and 3 charging cables with simulation of
faults)
• E-SET BASIC (Z593A)
(basic earth measurement accessories)
• E-SET PROFESSIONAL (Z592Z)
(extensive earth measurement accessories)
5.3 Meanings of Symbols on the Instrument
1 Test instrument 1 Compact battery pack
(Z502H)
1 Earthing contact plug insert,
country-specific
(PRO-SCHUKO /
GTZ3228000R0001)
1Charger
( Z502R)
1 2-pole measuring adapter
and cable for expansion into
a 3-pole adapter (PRO-A3-II /
Z501O)
1 DAkkS calibration certificate
2 Alligator clips 1 Operating Instructions
(this document)
1USBcable
1 Neck strap 1 ETC software*
Warning concerning a point of danger
(attention, observe documentation!)
Protection category II device
Charging socket for extra-low direct voltage
(for Z502R charger)
The device and its batteries may not be disposed of
with household trash. Further information is included in
the operating instructions.
Indicates EC conformity
If the guarantee seal is damaged or removed, all guar-
antee claims are rendered null and void.
The special technical knowledge of qualified personnel
is required for electrical installation or repair.
Calibration seal (blue seal):
Consecutive number
Deutsche Akkreditierungsstelle GmbH – calibration lab
Registration number
Date of calibration (year – month)
CAT III
600 V
CAT IV
300 V
Measuring category
!
XY123
2018-07
D-K
15080-01-01

8Gossen Metrawatt GmbH
5.4 Instrument Overview
Test Instrument and Adapter
Test Instrument and Adapter:
1 Control panel with keys and display screen
2 Eyelets for attaching the neck strap
3 Rotary selector switch
4 Measuring adapter (2-pole)
5 Plug insert (country-specific)
6 Test plug (with retaining ring)
7 Alligator clip (plug-on)
8 Test probes
9ON/START ▼key *
10 I N/compens./ZOFFSET key
11 Contact surfaces for finger contact
12 Test plug holder
13 Fuses
14 Holders for test probes (8)
Connections for Current Clamp, Probe, PRO-AB Leakage Current
Measuring Adapter:
15 Current clamp connection 1
16 Current clamp connection 2
17 Probe socket
Interfaces, Charger Connection:
18 Bluetooth®
19 USB slave for connection to a PC
20 RS 232 port for connecting barcode or RFID reader
21 Socket for Z502R charger
22 Battery compartment lid (compartment for batteries and
spare fuses)
* Can only be switched on with the key on the instrument
Accessories:
A PRO-HB (Z501V) test probe and measuring adapter holder –
can be purchased separately
456
8
91011
7
13
31
16 1715
14
2
19 20 21
22
12
!
RS 232
2
Connector Sockets for Current Clamp Sensor, Probe
and PRO-AB Leakage Current Measuring Adapter
15
16
17
* See section 10.1 on page 37 regarding use of the
probes.
*
**
A

Gossen Metrawatt GmbH 9
(1) Control Panel – Display Panel
See section 6.1, “Control Panel”, on page 16.
See section 6.2, “Display”, on page 16.
(2) Eyelets for the Neck Strap
The included neck strap can be attached at the right and left hand
sides of the instrument. You can hang the instrument from your
neck and keep both hands free for measurement.
(3) Rotary Selector Switch
The following basic functions can be selected with the rotary
switch:
SETUP / IN/ IF/ ZL-PE / ZL-N / RE / RLO / RINS / U / SENSOR /
EXTRA / AUTO
The various basic functions are selected by turning the function
selector switch while the instrument is switched on.
(4) Measuring Adapter
Attention!
!
The measuring adapter (2-pole) may only be used to-
gether with the test instrument’s test plug.
Use for other purposes is prohibited!
The plug-on measuring adapter (2-pole) with the two test probes
is used for measurements in systems without earthing contact
outlets, e.g. at permanent installations, distribution cabinets and
all three-phase outlets, as well as for insulation resistance and
low-value resistance measurements.
The 2-pole measuring adapter can be expanded to three poles for
phase sequence testing with the included measurement cable
(test probe).
(5) Plug Insert (country-specific)
Attention!
!
The plug insert may only be used together with the test
instrument’s test plug.
Use for other purposes is prohibited!
After the plug insert has been attached, the instrument can be
directly connected to earthing contact outlets. There’s no need to
concern yourself with poling at the plug. The instrument detects
the positions of phase conductor L and neutral conductor N and
automatically reverses polarity if necessary.
The instrument automatically determines whether or not both pro-
tective contacts in the earthing contact outlet are connected to
one another, as well as to the system protective conductor, for all
types of protective conductor measurements when the plug insert
is attached to the test plug.
(6) Test Plug
The various country specific plug inserts (e.g. protective contact
plug insert for Germany or SEV plug insert for Switzerland) or the
measuring adapter (2-pole) are attached to the test plug and
secured with a threaded connector.
The controls on the test plug are subject to interference suppres-
sion filtering. This may lead to slightly delayed responses as
opposed to controls located directly on the instrument.
(7) Alligator Clip (plug-on)
(8) Test Probes
The test probes comprise the second (permanently attached) and
third (plug-on) poles of the measuring adapter. A coil cable con-
nects them to the plug-on portion of the measuring adapter.
(9) ON/Start ▼Key
The measuring sequence for the func-
tion selected in the menu is started by
pressing this key, either on the test
plug or at the control panel. Exception: If the instrument is
switched off, it can only be switched on by pressing the key at the
control panel.
This key has the same function as the ▼key on the test plug.
(10) IN/ I Key (at the control panel)
The following sequences are triggered
by pressing this key, either on the test
plug or at the control panel:
• Starts the tripping test after measurement of touch voltage for
RCCB testing (IN).
• Measurement of ROFFSET is started in the RLO / ZL-N function.
• Semiautomatic polarity reversal (see section 10.9)
(11) Contact Surfaces
The contact surfaces are located at both sides of the test plug.
When the contact plug is grasped in the hand, contact is auto-
matically made with these surfaces. The contact surfaces are
electrically isolated from the terminals and from the measuring cir-
cuit.
In the event a potential difference of greater than 25 V between
protective conductor terminal PE and the contact surface, PE is
displayed. See “LED Indications, Mains Connections and Poten-
tial Differences” on page 17.
(12) Test Plug Holder
The test plug with attached plug insert can be reliably secured to
the instrument with the rubberized holder.
(13) Fuses
The two fuses protect the device in case of overload. Phase con-
ductor L and neutral conductor N are fused individually. If a fuse is
defective, and if an attempt is made to perform a measurement
which uses the circuit protected by this fuse, a corresponding
message appears at the display panel.
See section 21.2, “Fuse Replacement”, on page 98.
(14) Holders for Test Probes (8)
(15/16) Current Clamp Connector
Only the current clamp transformers offered as accessories may
be connected to these sockets.
(17) Probe Connector Socket
The probe connector socket is required for the measurement of
probe voltage US-PE, earth electrode voltage UE, earthing resis-
tance REand standing surface insulation resistance.
It can be used for the measurement of touch voltage during RCD
testing. The probe is connected with a 4 mm contact-protected
plug.
The instrument determines whether or not the probe has been
properly set and displays results at the display panel.
(18) Bluetooth® Port
(19) USB Port
The USB port allows for the exchange of data between the test
instrument and a PC.
(20) RS 232 Port
This port allows for data entry by means of a barcode scanner or
an RFID reader.
(21) Charging Socket
Only the Z502R charger for charging batteries inside the test
instrument may be connected to this socket.
(22) Battery Compartment Lid – Replacement Fuses
Attention!
!
Before removing the lid is removed, the instrument must
be disconnected from the measuring circuit at all poles!
The compartment under the lid accommodates the rechargeable
battery pack (Z502H), or commercially available rechargeable bat-
teries or regular batteries.
Two replacement fuses are also located under the battery com-
partment lid.

10 Gossen Metrawatt GmbH
5.5 Technical Data
Nominal Ranges of Use
Voltage UN120 V (108 V 132 V)
230 V (196 V 253 V)
400 V (340 V 440 V)
Frequency fN
16⅔ Hz (15.4 V 18 Hz)
50 Hz (49.5 V 50.5 Hz)
60 Hz (59.4 V 60.6 Hz)
200 Hz (190 V 210 Hz)
400 Hz (380 V 420 Hz)
Overall voltage range 65 V 550 V
Overall frequency range 15.4 Hz 420 Hz
Line voltage Sinusoidal
Temperature range 0 C +40C
Battery voltage 8 V 12 V
Supply impedance angle Corresponds to cos=10.95
Probe resistance
<50k
Reference Conditions
Line voltage 230 V 0.1%
Line frequency 50 Hz 0.1%
Measured qty. frequency 45 Hz 65 Hz
Measured qty. waveform Sine (deviation between effective and
rectified value 0.1%)
Supply impedance angle cos =1
Probe resistance 10 
Supply voltage 12 V 0.5 V
Ambient temperature + 23C 2 K
Relative humidity 40% 60%
Finger contact For testing potential difference
to ground potential
Standing surface
insulation Purely ohmic
Power Supply
Batteries 8 each AA 1.5 V
We recommend exclusive use of the
included rechargeable battery pack
(2000 mAh, Z502H).
Number of measurements (standard setup with illumination)
– For RINS 1 measurement – 25 s pause:
approx. 1100 measurements
– For RLO Auto polarity reversal / 1 
(1 measuring cycle) – 25 s pause:
approx. 1000 (Z502O) measurements
Battery test Symbolic display of rechargeable
battery voltage
Battery-saving circuit Display illumination can be switched off.
The test instrument is switched off
automatically after the last key opera-
tion. The user can select the desired
on-time.
Safety shutdown If supply voltage is too low, the instru-
ment is switched off, or cannot be
switched on.
Recharging socket Inserted rechargeable batteries can be
recharged directly by connecting a
charger to the recharging socket:
Z502R charger
Charging time Z502R charger: approx. 2 hours *
* Maximum charging time with fully depleted batteries.
A timer in the charger limits charging time to no more than 4 hours.
Overload Capacity
RISO 1200 V continuous
UL-PE, UL-N 600 V continuous
RCD, RE, RF440 V continuous
ZL-PE, ZL-N 550 V (Limits the number of measure-
ments and pause duration. If overload
occurs, the instrument is switched off
by means of a thermostatic switch.)
RLO Electronic protection prevents switching
on if interference voltage is present.
Protection with
fine-wire fuses FF 3.15 A 10 s,
Fuses blow at > 5 A 
Electrical Safety
Protection class II
Nominal voltage 230/400 V (300/500 V)
Test voltage 3.7 kV, 50 Hz
Measuring category CAT III 600 V or CAT IV 300 V
Pollution degree 2
Fuses
L and N terminals 1 G fuse-link ea.
FF 3.15/500G 6.3 × 32 mm
Electromagnetic Compatibility (EMC)
Product standard EN 61326-1
Ambient Conditions
Accuracy 0 … + 40 C
Operation –5 … + 50 C
Storage –20 … + 60 C (without batteries)
Relative humidity
Max. 75%, no condensation allowed
Elevation Max. 2000 m
Mechanical Design
Display Multiple display with dot matrix,
128 × 128 pixels
Dimensions W × L × H = 260 × 330 × 90 mm
Weight Approx. 2.7 kg with batteries
Protection Housing: IP 40, test probe: IP 20
per EN 60529
Data Interfaces
Type USB for PC connection
Type RS 232 for barcode and RFID readers
Type Bluetooth®
(PROFITEST MTECH+/PROFITEST MXTRA only)
For PC connection and option for connecting a
Bluetooth® keyboard (Bluetooth® Classic)
Frequency range: 2400 … 2483.5 MHz
Transmission intensity: max. + 3 dBm
BAT
Interference
emission
Class
EN 55022 A
Interference
immunity
Test value Feature
EN 61000-4-2 Contact/atmos. – 4 kV/8 kV
EN 61000-4-3 10 V/m
EN 61000-4-4 Mains connection – 2 kV
EN 61000-4-5 Mains connection – 1 kV
EN 61000-4-6 Mains connection – 3 V
EN 61000-4-11 0.5 periods / 100%

Gossen Metrawatt GmbH 11
5.6 Characteristic Values for PROFITEST MTECH+ and PROFITEST MBASE+
Func-
tion
Measured
Quantity Display Range Reso- lution
Input
Impedance /
Test Current
Measuring Range Nominal Val-
ues
Measuring Un-
certainty
Intrinsic
Uncertainty
Connections
Plug
Insert
1
2-Pole
Adapter 3-Pole Adapter Probe
Clamp Meters
WZ12C Z3512A
MFLEX
P300
U
UL-PE
UN-PE
0 … 99.9 V 0.1 V
5M
0.3 … 600 V 1
UN= 120, 230,
400, 500 V
fN= 16.7, 50,
60, 200, 400 Hz
±(|2% rdg.|+5d) ±(|1% rdg.|+5d)

100 … 600 V 1 V ±(|2% rdg.|+1d) ±(|1% rdg.|+1d)
f15.0 … 99.9 Hz
100 … 999 Hz
0.1 Hz
1 Hz
DC
15.4 … 420 Hz
±(|0.2% rdg.|+1d) ±(|0.1% rdg.|+1d)
U3 AC 0V…99.9V
100 V … 600 V
0.1 V
1V 0.3 V … 600 V ±(|3% rdg.|+5d)
±(|3% rdg.|+1d)
±(|2% rdg.|+5d)
±(|2% rdg.|+1d) 
UProbe 0 … 99.9 V
100 … 600 V
0.1 V
1V 1.0 V … 600 V ±(|2% rdg.|+5d)
±(|2% rdg.|+1d)
±(|1% rdg.|+5d)
±(|1% rdg.|+1d) 
UL-N 0 … 99.9 V
100 … 600 V
0.1 V
1V 1.0 … 600 V 1±(|3% rdg.|+5d) ±(|3% rdg.|+1d)
±(|2% rdg.|+5d)
±(|2% rdg.|+1d) 
I
IF
UIN0 … 70.0 V 0.1 V 0.3 × IN5 V … 70 V
UN=
120 V,
230 V,
400 V 2
fN= 50 Hz,
60 Hz
UL= 25 V, 50 V
IN=
6 mA,
10 mA,
30 mA,
100 mA,
300 mA,
500 mA 2
+|10% rdg.|+1d
+|1% rdg.|–1d …
+|9% rdg.|+1d
  option
ally
RE
10 … 999 
1.00 k… 6.51 k1 
0.01 k
I
 N
= 10 mA × 1.05
Calculated value
from
RE= UIN/ IN
3 … 999 
1 k… 2.17 k1  0.01 k
I
 N
= 30 mA × 1.05
1… 651 1 I
 N
= 100 mA × 1.05
0.3 … 99.9 
100 … 217 0.1 
1 
I
 N
= 300 mA × 1.05
0.2 … 9.9 
10 … 130 0.1  1 
I
 N
= 500 mA × 1.05
IF(IN= 6 mA) 1.8 … 7.8 mA
0.1 mA
1.8 … 7.8 mA 1.8 … 7.8 mA
±(|5% rdg.|+1d)
±(|3.5% rdg.|+2d)
IF(IN= 10 mA) 3.0 … 13.0 mA 3.0 … 13.0 mA 3.0 … 13.0 mA
IF(IN= 30 mA) 9.0 … 39.0 mA 9.0 … 39.0 mA 9.0 … 39.0 mA
IF(IN= 100 mA) 30 … 130 mA 1 mA 30 … 130 mA 30 … 130 mA
IF(IN= 300 mA) 90 … 390 mA 1 mA 90 … 390 mA 90 … 390 mA
IF(IN= 500 mA) 150 … 650 mA 1 mA 150 … 650 mA 150 … 650 mA
UI/ UL= 25 V 0 … 25.0 V 0.1 V Same as I0 … 25.0 V +|10% rdg.|+1d
+|1% rdg.|–1d …
+|9% rdg.|+1d
UI/ UL= 50 V 0 … 50.0 V 0 … 50.0 V
tA(IN× 1) 0 … 1000 ms 1ms 6 … 500 mA 0 … 1000 ms
4 ms 3 ms
tA(IN× 2) 0 … 1000 ms 1ms
2 × 6 mA …
2 × 500 mA
0 … 1000 ms
tA(IN× 5) 0 … 40 ms 1ms
5 × 6 mA …
5 × 300 mA
0 … 40 ms
ZL-PE
ZL-N
ZL-PE ()
ZL-N
0 m… 999 m
1.00 … 9.99 1 m
0.01 
0.1 1.3 A AC …
3.7 A AC
0.5A DC,
1.25 A DC 8
0.15 … 0.49 
0.50 … 0.99 
1.00 … 9.99 
UN = 120 V,
230, 400,
500 V1
f
N
=16.7 Hz, 50 Hz,
60 Hz
±(|10% rdg.|+30d)
±(|10% rdg.|+30d)
±(|5% rdg.|+3d)
±(|5% rdg.|+30d)
±(|4% rdg.|+30d)
±(|3% rdg.|+3d)

ZL-PE
ZL-PE
+ DC 8
0 m… 999 m
1.00 … 9.99 
10.0 … 29.9 
0.25 … 0.99 
1.00 … 9.99 
U
N
= 120, 230 V
f
N
= 50, 60 Hz
±(|18% rdg.|+30d)
±(|10% rdg.|+3d)
±(|6% rdg.|+50d)
±(|4% rdg.|+3d)
ISC (ZL-PE ,
ZL-PE
+ DC)
8
0 to 9.9 A
10 … 999 A
1.00 … 9.99 kA
10.0 … 50.0 kA
0.1 A
1A
10 A
100 A
120 (108 … 132) V
230 (196 … 253) V
400 (340 … 440) V
500 (450 … 550) V
Value calculated from ZL-PE
ZL-PE (15 mA)
0.6 … 9.9 0.1 Display range only
10.0 … 99.9 
100 … 999 0.1  1 
15 mA AC
10.0 … 99.9 
100 … 999 
U
N
= 120, 230 V
f
N
= 16.7
8
, 50,
60 Hz
±(|10% rdg.|+10d)
±(|8% rdg.|+2d)
±(|2% rdg.|+2d)
±(|1% rdg.|+1d)
ISC (15 mA)
100 … 999 mA
0.00 … 9.99 A
10.0 … 99.9 A
1mA
0.01 A
0.1 A
Calculated value
depending on UNand
ZL-PE:
ISC =
UN/10 …1000 
Value calculated from ZL-PE (15 mA):
ISC = UN/ZL-PE (15 mA)
RE
RE(with probe)
[RE (without probe)
values same as
ZL-PE ]
0 m… 999 m
1.00 … 9.99 
10.0 … 99.9 
100 … 999 
1 k…9.99 k
1 m
0.01 
0.1 
1
0.01 k
1.3 … 3.7 A AC
1.3 … 3.7 A AC
1.3 … 3.7 A AC
400 mA AC
40 mA AC
4 mA AC
0.15 … 0.49 
0.50 … 0.99 
1.0 …9.99 
10 …99.9 
100 …999 
1 k…9.99 k
U
N
= 120, 230 V
UN = 400 V 1
f
N
= 50, 60 Hz
±(|10% rdg.|+30d)
±(|10% rdg.|+30d)
±(|5% rdg.|+3d)
±(|10% rdg.|+3d)
±(|10% rdg.|+3d)
±(|10% rdg.|+3d)
±(|5% rdg.|+30d)
±(|4% rdg.|+30d)
±(|3% rdg.|+3d)
±(|3% rdg.|+3d)
±(|3% rdg.|+3d)
±(|3% rdg.|+3d)  
REDC+ 80 m… 999 m
1.00 … 9.99 
10.0 … 29.9 
1 m
0.01 
0.1 
1.3 … 3.7 A AC
0.5, 1.25 A DC
80.25 … 0.99 
1.00 … 9.99 
U
N
= 120, 230 V
f
N
= 50, 60 Hz
±(|18% rdg.|+30d)
±(|10% rdg.|+3d)
±(|6% rdg.|+50d)
±(|4% rdg.|+3d)
UE0 … 253 V 1 V — Calculated value
RE
Sel
Clamp
RE0 … 999 1 m…
1 
1.3 … 2.7 A AC
0.5 / 1.25 A DC
80.25 … 300 4See RE
±(|20% rdg.|+20d) ±(|15% rdg.|+20d)

REDC+ 80 … 999 1 m…
1 
U
N
= 120, 230 V
f
N
= 50, 60 Hz
±(|22% rdg.|+20d) ±(|15% rdg.|+20d)
EXTRA
ZST
10 k… 199 k1 k
1 k
0.01 M
0.1 M
2.3 mA at 230 V
10 k… 199 k
U0= UL-N
±(|20% rdg.|+2d) ±(|10% rdg.|+3d)

200 k… 999 k
1.00 M  … 9.99 M 
10.0 M  … 30.0 M 
200 k… 999 k
1.00 M  … 9.99 M 
10.0 M  … 30.0 M 
±(|10% rdg.|+2d) ±(|5% rdg.|+3d)

12 Gossen Metrawatt GmbH
PROFITEST MTECH+ and PROFITEST MBASE+
1U > 230 V with 2 or 3-pole adapter only
21×I
N > 300 mA and 2 × IN > 300 mA and 5 × IN > 500 mA and
If> 300 mA only up to UN230 V!
5×I
N > 300 mA only where UN= 230 V
3The transformation ratio selected at the clamp (1, 10, 100, 1000 mV/A)
must be set in the “Type” menu with the rotary switch in the “SENSOR”
position.
4Where REselective/REtotal < 100
5The specified measuring and intrinsic uncertainties already include those
of the respective current clamp.
6Measuring range of the signal input at the test instrument, UE: 0 … 1.0
VTRMS (0 … 1.4 Vpeak) AC/DC
7Input impedance of the signal input at the test instrument: 800 k
8DC bias only possible with PROFITEST MTECH+
Key: d = digit(s), rdg. = reading (measured value)
Func-
tion
Measured
Quantity Display Range Reso- lution Test Current Measuring Range
Nominal
Values
Measuring
Uncertainty
Intrinsic
Uncertainty
Connections
Plug
Insert
1
2-Pole
Adapter 3-Pole Adapter
Clamps / Meas. Ranges
WZ12
CZ3512 A
MFLEX
P300 CP1100
RISO
RINS, RE INS
1 k… 999 k
1.00 M… 9.99 M
10.0 M… 49.9 M
1 k
10 k
100 k
ISC = 1.5 mA
50 k  … 999 k 
1.00 M  … 49.9 M 
UN= 50 V
IN= 1 mA
Krange
±(|5% rdg.|+10d)
M
±(|5% rdg.|+1d)
krange
±(|3% rdg.|+10d)
M
±(|3% rdg.|+1d) 
1 k… 999 k
1.00 M… 9.99 M
10.0 M… 99.9 M
1 k
10 k
100 k
50 k  … 999 k 
1.00 M  … 99.9 M 
UN= 100 V
IN= 1 mA
1 k… 999 k
1.00 M… 9.99 M
10.0 M… 99.9 M
100 M… 200 M
1 k
10 k
100 k
1M
50 k  … 999 k 
1.00 M  … 200 M 
UN= 250 V
IN= 1 mA
1 k… 999 k
1.00 M… 9.99 M
10.0 M… 99.9 M
100 M… 500 M
1 k
10 k
100 k
1M
50 k  … 999 k 
1.00 M  … 499 M 
UN= 325 V,
UN= 500 V,
UN= 1000 V
IN= 1 mA
U10 … 999 V
1.00 … 1.19 kV
1V
10 V
10 … 1.19 kV ±(|3% rdg.|+1d) ±(|1.5% rdg.|+1d)
RLO
RLO
0.00 … 9.99 
10.0 … 99.9 
100 … 199 
0.01 
0.1 
1 
I 200 mA DC
I < 260 mA DC
0.10  … 5.99 
6.00  … 99.9 
U0= 4.5 V ±(|4% rdg.|+2d) ±(|2% rdg.|+2d) 
ROFFSET 0.00 … 9.99 0.01 I 200 mA DC
I < 260 mA DC
0.10 … 5.99 
6.00 … 99.9 
Transforma-
tion ratio 3
55
SEN-
SOR
6, 7
IL/Amp
0.0 mA … 99.9 mA 0.1 mA
1 V/A 5 A … 15 A
f
N
= 50, 60 Hz
±(|13% rdg.|+5d) ±(|5% rdg.|+4d)
I 15A
100 … 999 mA 1 mA
±(|13% rdg.|+1d) ±(|5% rdg.|+1d)1.00 … 9.99 A 0.01 A
10.0 … 15.0 A 0.1 A
1.00 … 9.99 A 0.01 A
1 mV / A 5 … 150 A
±(|11% rdg.|+4d) ±(|4% rdg.|+3d)
II
150 A
10.0 … 99.9 A 0.1 A ±(|11% rdg.|+1d) ±(|4% rdg.|+1d)
100 A … 150 A 1 A
0.0 … 99.9 mA 0.1 mA 1 V/A 5 … 1000 mA
fN=
16.7, 50, 60,
200, 400 Hz
±(|7% rdg.|+2d) ±(|5% rdg.|+2d) 1A
100 … 999 mA 1 mA ±(|7% rdg.|+1d) ±(|5% rdg.|+1d)
0.00 A … 9.99 A 0.01 A 100 mV/A 0.05 A … 10 A
±(|3.4% rdg.|+2d) ±(|3% rdg.|+2d) 10 A
0.00 A … 9.99 A 0.01 A 10 mV/A 0.5 A … 100 A ±(|3.1% rdg.|+2d) ±(|3% rdg.|+2d)
100 A
10.0 … 99.9 A 0.1 A ±(|3.1% rdg.|+1d) ±(|3% rdg.|+1d)
0.00 A … 9.99 A 0.01 A
1 mV / A 5 … 1000 A
±(|3.1% rdg.|+1d) ±(|3% rdg.|+1d)
1000
A
10.0 … 99.9 A 0.1 A ±(|3.1% rdg.|+2d) ±(|3% rdg.|+2d)
100 … 999 A 1 A
±(|3.1% rdg.|+1d) ±(|3% rdg.|+1d)
0.0 … 99.9 mA 0.1 mA 1 V/A 30 … 1000 mA
fN= 50 Hz,
60 Hz
±(|27% rdg.|+100d)
±(|3%
rdg.|+100d)
3A
100 … 999 mA 1 mA ±(|27% rdg.|+11d) ±(|3% rdg.|+11d)
0.00 … 9.99 A 0.01 A 100 mV/A 0.3 … 10 A
±(|27% rdg.|+12d) ±(|3% rdg.|+12d) 30 A
0.01 A ±(|27% rdg.|+11d) ±(|3% rdg.|+11d)
0.00 … 9.99 A 0.01 A 10 mV/A 3 … 100 A
±(|27% rdg.|+100d)
±(|3%
rdg.|+100d)
300 A
10.0 … 99.9 A 0.1 A ±(|27% rdg.|+11d) ±(|3% rdg.|+11d)
0.00 … 9.99 A 0.01 A 10 mV/A 0.5 … 100 A fN=
DC, 16.7 Hz,
50 Hz, 60 Hz,
200 Hz
±(|5% rdg.|+12d) ±(|3% rdg.|+12d)
100 A
10.0 … 99.9 A 0.1 A ±(|5% rdg.|+2d) ±(|3% rdg.|+2d)
0.00 … 9.99 A 0.01 A
1 mV / A 5 … 1000 A
±(|5% rdg.|+50d) ±(|3% rdg.|+50d)
1000 A
10.0 … 99.9 A 0.1 A ±(|5% rdg.|+7d) ±(|3% rdg.|+7d)
100 … 999 A 1 A ±(|5% rdg.|+2d) ±(|3% rdg.|+2d)

Gossen Metrawatt GmbH 13
5.7 Characteristic Values for PROFITEST MXTRA and PROFITEST MPRO
Func-
tion
Measured
Quantity Display Range Reso- lution
Input
Impedance /
Test Current
Measuring
Range
Nominal
Values
Measuring
Uncertainty
Intrinsic
Uncertainty
Connections
Plug
Insert
1
2-Pole
Adapter 3-Pole Adapter Probe
Clamp Meters
WZ12C Z3512A
MFLEX
P300
U
UL-PE
UN-PE
0 … 99.9 V 0.1 V
5M
0.3 … 600 V 1UN=
120 V,
230 V,
400 V,
500 V,
fN= 16.7, 50,
60, 200, 400 Hz
±(|2% rdg.|+5d) ±(|1% rdg.|+5d)

100 V … 600 V 1 V ±(|2% rdg.|+1d) ±(|1% rdg.|+1d)
f15.0 … 99.9 Hz
100 … 999 Hz
0.1 Hz
1 Hz
DC
15.4 … 420 Hz ±(|0.2% rdg.|+1d) ±(|0.1% rdg.|+1d)
U3 AC 0 … 99.9 V
100 … 600 V
0.1 V
1V 0.3 … 600 V ±(|3% rdg.|+5d) ±(|3% rdg.|+1d)
±(|2% rdg.|+5d)
±(|2% rdg.|+1d) 
UProbe 0 … 99.9 V
100 … 600 V
0.1 V
1V 1.0 V … 600 V ±(|2% rdg.|+5d)
±(|2% rdg.|+1d)
±(|1% rdg.|+5d)
±(|1% rdg.|+1d) 
UL-N 0 … 99.9 V
100 … 600 V
0.1 V
1V 1.0 … 600 V 1±(|3% rdg.|+5d) ±(|3% rdg.|+1d)
±(|2% rdg.|+5d)
±(|2% rdg.|+1d) 
IN
IF
UIN0 … 70.0 V 0.1 V 0.3 × IN5 … 70 V
UN=
120 V,
230 V,
400 V 2
f
N
= 50, 60 Hz
UL= 25, 50 V
IN=
6 mA,
10 mA,
30 mA,
100 mA,
300 mA,
500 mA 2
+|10% rdg.|+1d
+|1% rdg.|–1d …
+|9% rdg.|+1d
 
option-
ally
RE
10 … 999 
1.00 k… 6.51 k1 
0.01 k
I
 N
= 10 mA × 1.05
Calculated value
from
RE= UIN/ IN
3 … 999 
1 k… 2.17 k1 
0.01 k
I
 N
= 30 mA × 1.05
1… 651 1 I
 N
= 100 mA × 1.05
0.3 … 99.9 
100 … 217 0.1 
1 
I
 N
= 300 mA × 1.05
0.2 … 9.9 
10 … 130 0.1 
1 
I
 N
= 500 mA × 1.05
IF(IN= 6 mA) 1.8 … 7.8 mA
0.1 mA
1.8 … 7.8 mA 1.8 … 7.8 mA
±(|5% rdg.|+1d) ±(|3.5% rdg.|+2d)
IF(IN= 10 mA) 3.0 … 13.0 mA 3.0 … 13.0 mA 3.0 … 13.0 mA
IF(IN= 30 mA) 9.0 … 39.0 mA 9.0 … 39.0 mA 9.0 … 39.0 mA
IF(IN= 100 mA) 30 … 130 mA 1 mA 30 … 130 mA 30 … 130 mA
IF(IN= 300 mA) 90 … 390 mA 1 mA 90 … 390 mA 90 … 390 mA
IF(IN= 500 mA) 150 … 650 mA 1 mA 150 … 650 mA 150 … 650 mA
UI/ UL= 25 V 0 … 25.0 V 0.1 V Same as I0 … 25.0 V
+|10% rdg.|+1d
+|1% rdg.|–1d …
+|9% rdg.|+1dUI/ UL= 50 V 0 … 50.0 V 0 … 50.0 V
tA(IN× 1) 0 … 1000 ms 1ms 6 … 500 mA 0 … 1000 ms
4 ms 3 ms
tA(IN× 2) 0 … 1000 ms 1ms
2 × 6 mA …
2 × 500 mA
0 … 1000 ms
tA(IN× 5) 0 … 40 ms 1ms
5 × 6 mA …
5 × 300 mA
0 … 40 ms
ZL-PE
ZL-N
ZL-PE ()
ZL-N
0 m… 999 m
1.00 … 9.99 1 m
0.01 
0.1 
3.7 A AC …
4.7 A AC
0.10 … 0.49 
0.50 … 0.99 
1.00 … 9.99 
UN = 120, 230,
400, 500 V1
f
N
=16.7 Hz, 50 Hz,
60 Hz
±(|10% rdg.|+20d)
±(|10% rdg.|+20d)
±(|5% rdg.|+3d)
±(|5% rdg.|+20d)
±(|4% rdg.|+20d)
±(|3% rdg.|+3d)

ZL-PE
ZL-PE
+ DC8
0 m… 999 m
1.00 … 9.99 
10.0 … 29.9 
3.7 … 4.7 A AC
0.5, 1.25 A DC
8 0.25 … 0.99 
1.00 … 9.99 
U
N
= 120, 230 V
f
N
= 50, 60 Hz
±(|18% rdg.|+30d)
±(|10% rdg.|+3d)
±(|6% rdg.|+50d)
±(|4% rdg.|+3d)
ISC (ZL-PE ,
ZL-PE +
DC
8
)
0 to 9.9 A
10 … 999 A
1.00 … 9.99 kA
10.0 … 50.0 kA
0.1 A
1A
10 A
100 A
120 (108 … 132) V
230 (196 … 253) V
400 (340 … 440) V
500 (450 … 550) V
Value calculated from ZL-PE
ZL-PE (15 mA) 0.6 … 99.9 
100 … 999 0.1 
1 
15 mA AC
10.0 … 99.9 
100 … 999 
U
N
= 120, 230 V
fN= 16.7, 50,
60 Hz
±(|10% rdg.|+10d)
±(|8% rdg.|+2d)
±(|2% rdg.|+2d)
±(|1% rdg.|+1d)
ISC (15 mA)
0.10 … 9.99 A
10.0 … 99.9 A
100 … 999 A 11
0.01 A
0.1 A
1A
100 … 12 A
(UN= 120 V)
200 mA … 25 A
(UN= 230 V)
Value calculated from
ISC = UN/ZL-PE (15 mA)
RE
RE.sl (without
probe)
RE (with probe)
0 m… 999 m
1.00 … 9.99 
10.0 … 99.9 
100 … 999 
1 k…9.99 k
1 m
0.01 
0.1 
1
0.01 k
3.7 … 4.7 A AC
3.7 … 4.7 A AC
400 mA AC
40 mA AC
4 mA AC
0.10 … 0.49 
0.50 … 0.99 
1.0 …9.99 
10 …99.9 
100 …999 
1 k…9.99 k
UNsame as
function U 1
f
N
= 50, 60 Hz
±(|10% rdg.|+20d)
±(|10% rdg.|+20d)
±(|5% rdg.|+3d)
±(|10% rdg.|+3d)
±(|10% rdg.|+3d)
±(|10% rdg.|+3d)
±(|5% rdg.|+20d)
±(|4% rdg.|+20d)
±(|3% rdg.|+3d)
±(|3% rdg.|+3d)
±(|3% rdg.|+3d)
±(|3% rdg.|+3d)
 
RE (15 mA)
(without/with
probe)
0.5 … 99.9 
100 … 999 0.1 
1 15 mA AC 10 …99.9 
100 …999 
U
N
= 120, 230 V
f
N
= 50, 60 Hz
±(|10% rdg.|+10d)
±(|8% rdg.|+2d)
±(|2% rdg.|+2d)
±(|1% rdg.|+1d)
RE.sl (without
probe) +
DC8
RE.sl (with probe)
+ DC8
0 m… 999 m
1.00 … 9.99 
10.0 … 29.9 
1 m
0.01 
0.1 
3.7 … 4.7 A AC
0.5, 1.25 A DC
8 0.25 … 0.99 
1.00 … 9.99 
U
N
= 120, 230 V
f
N
= 50, 60 Hz
±(|18% rdg.|+30d)
±(|10% rdg.|+3d)
±(|6% rdg.|+50d)
±(|4% rdg.|+3d)
UE0 … 253 V 1 V
3.7 … 4.7 A AC
RE = 0.10 …
9.99 W
U
N
= 120, 230 V
fN= 50, 60 Hz Calculated UE= UN× RE/RE.sl
RE
Sel
Clamp
RE.sel
(only with probe)
0 m… 999 m
1.00 … 9.99 
10.0 … 99.9 
100 … 999 
1 m
0.01 
0.1 
1
2.1 A AC
2.1 A AC
400 mA AC
40 mA AC
0.25 … 300 4
U
N
= 120, 230 V
f
N
= 50, 60 Hz ±(|20% rdg.|+20d) ±(|15% rdg.|+20d)


RE.sel
+ DC 8
(only with probe)
0 m… 999 m
1.00 … 9.99 
10.0 … 99.9 
100 … 999 
1 m
0.01 
0.1 
1
3.7 … 4.7 A AC
0.5, 1.25 A DC
8 0.25 … 300 
RE.tot < 10 4
U
N
= 120, 230 V
f
N
= 50, 60 Hz ±(|22% rdg.|+20d) ±(|15% rdg.|+20d)
EXTRA
ZST
10 k… 199 k1 k
1 k
0.01 M
0.1 M
2.3 mA at 230 V
10 k… 199 k
U0= UL-N
±(|20% rdg.|+2d) ±(|10% rdg.|+3d)

200 k… 999 k
1.00 M  … 9.99 M 
10.0 M  … 30.0 M 
200 k… 999 k
1.00 M  … 9.99 M 
10.0 M  … 30.0 M 
±(|10% rdg.|+2d) ±(|5% rdg.|+3d)

14 Gossen Metrawatt GmbH
Characteristic Values for PROFITEST MXTRA and PROFITEST MPRO
1U > 230 V, with 2 or 3-pole adapter only
21
× IN > 300 mA and 2 × IN > 300 mA and 5 × IN > 500 mA and
If> 300 mA only up to UN230 V!
3The transformation ratio selected at the clamp (1/10/100/1000 mV/A)
must be set in the “Type” menu with the rotary switch in the “SENSOR”
position.
4Where REselective/REtotal < 100
5 The specified measuring and intrinsic uncertainties already include those
of the respective current clamp.
6
Measuring range of the signal input at the test instrument, U
E
: 0 … 1.0
V
TRMS
(0 … 1.4 V
peak
) AC/DC
7Input impedance
of the signal input at the test instrument : 800 k
8DC bias only possible with PROFITEST MXTRA
11 Where ZL-PE < 0.6 , ISC > UN/0.5 is displayed
Key: d = digit(s), rdg. = reading (measured value)
Func-
tion
Measured
Quantity Display Range Reso- lution Test Current Measuring Range Nominal Values
Measuring
Uncertainty
Intrinsic
Uncertainty
Connections
Plug
Insert
1
2-Pole
Adapter 3-Pole Adapter
Clamps / Meas. Ranges
WZ12C Z3512A
MFLEX
P300 CP1100
EXTRA
IMD test 20 k… 648 k
2.51 M1 k 0.01 M
IT line voltage
U
N
= 90 …
550 V
20 k… 199 k
200 k… 648 k
2.51 M
IT system nomi-
nal voltages
UN=
120 V, 230 V,
400 V, 500 V
f
N
= 50, 60 Hz
±7%
±12%
±3%
±5%
±10%
±2% 
RISO
RINS, RE INS
1k… 999 k
1.00M… 9.99 M
10.0M… 49.9 M
1 k
10 k
100 k
ISC = 1.5 mA
50 k… 999 k
1.00 M… 49.9
M
UN= 50 V
IN= 1 mA
Krange
±(|5% rdg.|+10d)
M
±(|5% rdg.|+1d)
krange
±(|3% rdg.|+10d)
M
±(|3% rdg.|+1d) 
1 k… 999 k
1.00 M… 9.99 M
10.0 M… 99.9 M
1 k
10 k
100 k
50 k  … 999 k 
1.00 M  … 99.9 M 
UN= 100 V
IN= 1 mA
1 k… 999 k
1.00 M… 9.99 M
10.0 M… 99.9 M
100 M… 200 M
1 k
10 k
100 k
1M
50 k  … 999 k 
1.00 M  … 200 M 
UN= 250 V
IN= 1 mA
1 … 999 k
1.00 … 9.99 M
10.0 … 99.9 M
100 … 500 M
1 k
10 k
100 k
1M
50 k  … 999 k 
1.00 M  … 499 M 
UN= 325 V
UN= 500 V
UN= 1000 V
IN= 1 mA
U10 … 999 V DC
1.00 … 1.19 kV
1V
10 V 10 … 1.19 kV ±(|3% rdg.|+1d)
±(|1.5% rdg.|+1d)
RLO
RLO
0.00 … 9.99 
10.0 … 99.9 
100 … 199 
0.01 
0.1 
1 
I 200 mA DC
I < 260 mA DC
0.10 … 5.99 
6.00 … 99.9 U0= 4.5 V ±(|4% rdg.|+2d) ±(|2% rdg.|+2d) 
ROFFSET 0.00 … 9.99 0.01 I 200 mA DC
I < 260 mA DC
0.10 … 5.99 
6.00 … 99.9 
Transforma-
tion
ratio 3
55
SEN-
SOR
6, 7
IL/Amp
0.0 … 99.9 mA 0.1 mA
1 V/A 5 … 15 A
f
N
= 50, 60 Hz
±(|13% rdg.|+5d) ±(|5% rdg.|+4d)
I 15A
100 … 999 mA 1 mA
±(|13% rdg.|+1d) ±(|5% rdg.|+1d)1.00 … 9.99 A 0.01 A
10.0 … 15.0 A 0.1 A
1.00 … 9.99 A 0.01 A
1 mV / A 5 … 150 A
±(|11% rdg.|+4d) ±(|4% rdg.|+3d)
II
150 A
10.0 … 99.9 A 0.1 A ±(|11% rdg.|+1d) ±(|4% rdg.|+1d)
100 … 150 A 1 A
0.0 … 99.9 mA 0.1 mA 1 V/A 5 … 1000 mA
fN=
16.7, 50, 60,
200, 400 Hz
±(|7% rdg.|+2d) ±(|5% rdg.|+2d) 1A
100 … 999 mA 1 mA ±(|7% rdg.|+1d) ±(|5% rdg.|+1d)
0.00 … 9.99 A 0.01 A 100 mV/A 0.05 … 10 A ±(|3.4% rdg.|+2d) ±(|3% rdg.|+2d) 10 A
0.00 … 9.99 A 0.01 A 10 mV/A 0.5 … 100 A ±(|3.1% rdg.|+2d) ±(|3% rdg.|+2d)
100 A
10.0 … 99.9 A 0.1 A ±(|3.1% rdg.|+1d) ±(|3% rdg.|+1d)
0.00 … 9.99 A 0.01 A
1 mV / A 5 … 1000 A
±(|3.1% rdg.|+1d) ±(|3% rdg.|+1d)
1000
A
10.0 … 99.9 A 0.1 A ±(|3.1% rdg.|+2d) ±(|3% rdg.|+2d)
100 … 999 A 1 A ±(|3.1% rdg.|+1d) ±(|3% rdg.|+1d)
0.0 … 99.9 mA 0.1 mA 1 V/A 30 …
1000 mA
f
N
= 50, 60 Hz
±(|27% rdg.|+100d) ±(|3% rdg.|+100d)
3A
100 … 999 mA 1 mA ±(|27% rdg.|+11d) ±(|3% rdg.|+11d)
0.00 … 9.99 A 0.01 A 100 mV/A 0.3 … 10 A
±(|27% rdg.|+12d) ±(|3% rdg.|+12d) 30 A
0.01 A ±(|27% rdg.|+11d) ±(|3% rdg.|+11d)
0.00 … 9.99 A 0.01 A 10 mV/A 3 … 100 A
±(|27% rdg.|+100d) ±(|3% rdg.|+100d)
300 A
10.0 … 99.9 A 0.1 A ±(|27% rdg.|+11d) ±(|3% rdg.|+11d)
0.00 … 9.99 A 0.01 A 10 mV/A 0.5 … 100 A fN=
DC, 16.7 Hz,
50 Hz, 60 Hz,
200 Hz
±(|5% rdg.|+12d) ±(|3% rdg.|+12d)
100 A
10.0 … 99.9 A 0.1 A ±(|5% rdg.|+2d) ±(|3% rdg.|+2d)
0.00 … 9.99 A 0.01 A
1 mV / A 5 … 1000 A
±(|5% rdg.|+50d) ±(|3% rdg.|+50d)
1000 A
10.0 … 99.9 A 0.1 A ±(|5% rdg.|+7d) ±(|3% rdg.|+7d)
100 … 999 A 1 A ±(|5% rdg.|+2d) ±(|3% rdg.|+2d)

Gossen Metrawatt GmbH 15
Characteristic Values, Special Measurements with PROFITEST MPRO and PROFITEST MXTRA
1Signal frequency without interference signal
2PRO-RE (Z501S) adapter cable for test plug, for connecting earth
probes (E-Set 3/4)
3
PRO-RE/2 adapter cable for test plug, for connecting the E-CLIP2 generator
clamp
4Generator clamp: E-CLIP2 (Z591B)
5Clamp meter: Z3512A (Z225A)
6Where RE.sel/RE< 10 or clamp meter current > 500 µA
7Where RE.H/RE100 and RE.E/RE100
8Where d = 20 m
9Where d = 2 m
10 Only where RANGE = 20 k
11 Only where RANGE = 50 kor AUTO
Key: d = digit(s), rdg. = reading (measured value)
Func-
tion
Measured
Quantity Display Range Reso- lution
Test
Current /
Signal Freq.
1
Measuring Range Measuring
Uncertainty
Intrinsic
Uncertainty
Connections
Adapter for Test Plug Current Clamps
PRO-RE PRO-RE/2 Z3512A Z591B
RE
BAT
RE, 3-pole 0.00 … 9.99 
10.0 … 99.9 
100 … 999 
1.00 k… 9.99 k
10.0 k… 50.0 k
0.01 
0.1 
1 
0.01 k
0.1 k
16 mA/128 Hz
1.6 mA/128 Hz
0.16 mA/128 Hz
0.16 mA/128 Hz
0.16 mA/128 Hz
1.00 … 19.9 
5.0 … 199 
50 … 1.99 k
0.50 k… 19.9 k
0.50 k… 49.9 k
±(|10% rdg.|+10d
+ 1  ±(|3% rdg.|+5d
+ 0.5  2
RE, 4-pole ±(|10% rdg.|+10d) ±(|3% rdg.|+5d)
RE, 4-pole
selective
with clamp meter
0.00 … 9.99 
10.0 … 99.9 
100 … 999 
1.00 k… 9.99 k
10.0 k… 19.9 k10
10.0 k… 49.9 k11
0.01 
0.1 
1 
0.01 k
0.1 k
0.1 k
16 mA/128 Hz
16 mA/128 Hz
1.6 mA/128 Hz
0.16 mA/128 Hz
0.16 mA/128 Hz
0.16 mA/128 Hz
1.00 … 9.99 
10.0 … 200 ±(|15% rdg.|+10d)
±(|20% rdg.|+10d)
6
±(|10% rdg.|+10d)
±(|15% rdg.|+10d)
25
Soil resistivity
(p)
0.0 m … 9.9 m
100 m … 999 m
1.00 m … 9.99 km
0.1 m
1 m
0.01
kWm
16 mA/128 Hz
1.6 mA/128 Hz
0.16 mA/128 Hz
0.16 mA/128 Hz
0.16 mA/128 Hz
100 m … 9.99 km 8
500 m … 9.99 km 8
5.00 km … 9.99 km 9
5.00 km … 9.99 km 9
5.00 km … 9.99 km 9
±(|20% rdg.|+10d)
7
±(|12% rdg.|+10d)
72
Probe clearance d (p) 0.1 … 999 m
RE, 2 clamps
0.00 … 9.99 
10.0 … 99.9 
100 … 999 
1.00 … 1.99 k
0.01 
0.1 
1 
0.01 k
30 V / 128 Hz 0.10 … 9.99 
10.0 … 99.9 ±(|10% rdg.|+5d) ±(|20% rdg.|+5d)
±(|5% rdg.|+5d)
±(|12% rdg.|+5d)
354

16 Gossen Metrawatt GmbH
6 Operating and Display Elements
6.1 Control Panel
The display and control panel can be swiveled forward or backward with the detented swivel hinge. The instrument can thus be set to
the optimum reading angle.
6.2 Display
The following appear at the display:
• One or two measurement values as three place numeric dis-
play with unit of measure and abbreviated measured quantity
• Nominal values for voltage and frequency
• Circuit diagrams
• On-line help
• Messages and instructions
6.3 LEDs
MAINS/NETZ LED
This LED is only functional when the instrument is switched on. It
has no function in the voltage ranges UL-N and UL-PE.
It lights up green, red or orange, or blinks green or red depending
upon how the instrument has been connected and the selected
function (see also section 6.4, “LED Indications, Mains Connec-
tions and Potential Differences”, beginning on page 17).
This LED also lights up if line voltage is present when measuring
RISO and RLO.
UL/RLLED
This LED lights up red if touch voltage is greater than 25 V or 50 V
during RCD testing, as well as after safety shutdown occurs. It
also lights up if RISO or RLO limit values have been exceeded or
fallen short of.
RCD • FI LED
This LED lights up red if the RCCB is not tripped within 400 ms
(1000 ms for selective RCDs – type RCD S) during the tripping
test with nominal residual current. It also lights up if the RCCB is
not tripped before nominal residual current has been reached
during measurement with rising residual current.
Attention!
!
The mains connection test may not be used to test sys-
tems or system components for the absence of voltage!
MEM: Key for memory functions
HELP: Access context sensitive help
IN: Tripping test
Next step
(semiautomatic measurement)
Start offset measurement
ON/START ▼: Switch on
Start/stop measurement
ESC : Return from submenu
SoftkeysFixed Function Keys
• Parameter selection
• Limit value
specification
• Entry functions
LEDs and Connection Symbols 
section 6.3
9
10
Battery Display
Measuring Function
Measurement in progress/ Memory Occupancy
Measured
Parameters
PE
Save Value
Battery full
Battery OK
Battery weak
Battery (almost) dead
Battery Display (section 7.1)
BAT
BAT
BAT
BAT
Memory Occupancy Display
MEM Memory half full
MEM Memory full > transfer data to PC
Connection Test – Mains Connection Test (section 6.4)
N
PE
LN
PE
L)(
Connection OK L and N reversed
N
PE
L N
PE
LxN
PE
L N
PE
L
xx
RUN READY
Connection Test section 6.4
U < 8 V
L
PE
N
x
L
PE
N
Bluetooth® Active Display:
Quantities
stopped

Gossen Metrawatt GmbH 17
6.4 LED Indications, Mains Connections and Potential Differences
LED Signals
Mains Connection Test — Single-Phase System — LCD Connection Pictographs
Attention!
!
The mains connection test may not be used to test systems or system components for the absence of voltage!
Status Test
Plug
Mea-
suring
Adapter
Function Switch Position Function/Meaning
NETZ/
MAINS Lights up
green
X
IN/ IF, ZL-N / ZL-PE / RE,
U, ZST, kWh, IMD, int. ramp, RCM
Correct connection, measurement enabled
NETZ/
MAINS Blinks
green
X
IN/ IF, ZL-N / ZL-PE / RE,
U, ZST, kWh, IMD, int. ramp, RCM
N conductor not connected,
measurement enabled
NETZ/
MAINS Blinks red
XX
IN/ IF, ZL-N / ZL-PE / RE,
U, ZST, kWh, IMD, int. ramp, RCM
1) No line voltage or
2) PE interrupted
NETZ/
MAINS Lights up
red
X RLO,RISO, RE, IL, sensor Interference voltage is present at the test probes.
Measurement is disabled.
NETZ/
MAINS Blinks yel-
low
X IN/ IF, ZL-N / ZL-PE / REL and N are connected to the phase conductors.
UL/RLLights up
red
XX
RINS, RLO, RE,
ZL-N, ZL-PE, U, IL, Ures, sensor The selected limit value has been violated.
RE, ZL-PE, IF, IN,
ta+I, RCM
Interference voltage limit value ULhas been exceeded.
Safety shutdown has occurred.
ZL-N, ZL-PE,
Z
ST
, IMD, kWh, RCM, PRCD,
e-mobility
The test has been manually assessed as “NOT OK”.
FI/RCD Lights up
red
XX
IN/ IF,
int. ramp
The RCCB was not tripped, or was tripped too late
during the tripping test.
Status Test
Plug
Mea-
suring
Adapter
Function Switch
Position
Function/Meaning
Is dis-
played
All except for U No connection detected
Is dis-
played
All except for U Connection OK
Is dis-
played
All except for U L and N reversed, neutral conductor charged with phase voltage
Is dis-
played
All except U and RE No mains connection
RE Standard display without connection messages
Is dis-
played
All except for U Neutral conductor interrupted
Is dis-
played
All except for U
Protective conductor PE interrupted,
neutral conductor N and/or phase conductor L charged with phase volt-
age
Is dis-
played
All except for U
Phase conductor L interrupted,
neutral conductor N charged with phase voltage
Is dis-
played
All except for U Phase conductor L and protective conductor PE reversed
Is dis-
played
All except for U
Phase conductor L and protective conductor PE reversed
Neutral conductor interrupted (with probe only)
Is dis-
played
All except for U L and N are connected to the phase conductors.
?
?
?
N
PE
L
N
PE
L
N
PE
L
N
PE
Lx
N
PE
L
x
N
PE
L
x
N
PE
L
N
PE
Lx
N
PE
L

18 Gossen Metrawatt GmbH
Mains Connection Test — 3-Phase System — LCD Connection Pictographs
Attention!
!
The mains connection test may not be used to test systems or system components for the absence of voltage!
Status Test Plug Measuring
Adapter
Function Switch Position Function/Meaning
Is displayed
U
(3-phase measurement)
Clockwise rotation
Is displayed
U
(3-phase measurement)
Counter-clockwise rotation
Is displayed
U
(3-phase measurement)
Short between L1 and L2
Is displayed
U
(3-phase measurement)
Short between L1 and L3
Is displayed
U
(3-phase measurement)
Short between L2 and L3
Is displayed
U
(3-phase measurement)
Conductor L1 missing
Is displayed
U
(3-phase measurement)
Conductor L2 missing
Is displayed
U
(3-phase measurement)
Conductor L3 missing
Is displayed
U
(3-phase measurement)
Conductor L1 to N
Is displayed
U
(3-phase measurement)
Conductor L2 to N
Is displayed
U
(3-phase measurement)
Conductor L3 to N

Gossen Metrawatt GmbH 19
Connection Test — Battery Powered Earthing Resistance Measurements, “Battery Mode”
PE Test via Finger Contact at the Contact Surfaces on the Test Plug
Status bar: Display of Charge Level, Memory Occupancy and Bluetooth® Function
Status Test
Plug
Mea-
suring
Adapter
Function
Switch Position
Function/Meaning
Is displayed
R
EStandard display without connection messages
Is displayed PRO-RE
R
EInterference voltage at probe S > 3 V
Restricted measuring accuracy
Is displayed
Clamp
meter R
E
Interference/measuring current ratio > 50 at RE(sel), 1000 at RE(2Z)
Restricted measuring accuracy
at R
E(sel):
Interference current > 0 85 A or interference/measuring current ratio > 100
➭No measured value, display: RE.Z – – –
Is displayed PRO-RE
R
E
Probe H not connected or RE.H >150k
➭No measurement, display: RE – – –
RE.H > 50 kor
RE.H/RE> 10000
➭Measured value is displayed, restricted measuring accuracy
Is displayed PRO-RE
R
E
Probe S not connected
or RE.S > 150 k
or RE.S × RE.H > 25 M²
➭No measurement, display: RE – – –
RE.S > 50 kor
RE.S/RE> 300
➭Measured value is displayed, restricted measuring accuracy
Is displayed PRO-RE
R
E
Probe E not connected or RE.E > 150 kRE.E/RE> 2000
➭No measurement, display: RE – – –
RE.E/RE>300
➭Measured value is displayed, restricted measuring accuracy
N
PE
L
Status Test
Plug
Mea-
suring
Adapter
Function Switch
Position
Function/Meaning
LCD LEDs
Is displayed
UL/RL
FI/RCD
light up
red
XX
U
(single-phase
measurement)
Potential difference 50 V between finger contact and PE (earth contact)
Frequency f 50 Hz
Is displayed
UL/RL
FI/RCD
light up
red
XX
U
(single-phase
measurement)
If L is correctly contacted and PE is interrupted (frequency f 50 Hz)
PE
PE
Status Test
Plug
Mea-
suring
Adapter
Function Switch
Position
Function/Meaning
Battery
status
Is dis-
played
U,
R
INS
,
R
LO
, R
E
,
Z
L-N
, Z
L-PE
,
I
F
, I
 N
,
Setup,
EXTRA,
SENSOR
Battery charge level ≥ 80%
Is dis-
played Battery charge level ≥ 50%
Is dis-
played Battery charge level ≥ 30%
Is dis-
played Battery charge level ≥ 15%
Is dis-
played Battery charge level ≥ 0%

20 Gossen Metrawatt GmbH
Error Messages — LCD Connection Pictographs
Battery
test
Is dis-
played
All
Rechargeable batteries must be recharged or replaced towards the end
of their service life (U < 8 V).
Memory
Status
Is dis-
played
U,
R
INS
,
R
LO
, R
E
,
Z
L-N
, Z
L-PE
,
I
F
, I
 N
,
Setup,
EXTRA,
SENSOR
Memory occupancy ≥ 100%
Is dis-
played Memory occupancy ≥ 87.5%
Is dis-
played Memory occupancy ≥ 75%
Is dis-
played Memory occupancy ≥ 62.5%
Is dis-
played Memory occupancy ≥ 50%
Is dis-
played Memory occupancy ≥ 37.5%
Is dis-
played Memory occupancy ≥ 25%
Is dis-
played Memory occupancy ≥ 12.5%
Is dis-
played Memory occupancy ≥ 0%
Blue-
tooth®
Status
Is dis-
played
U,
R
INS
,
R
LO
, R
E
,
Z
L-N
, Z
L-PE
,
I
F
, I
 N
,
Setup,
EXTRA,
SENSOR
Bluetooth® connection interrupted, display appears after activating the
Bluetooth function in setup
Is dis-
played Bluetooth® connection established
Status Test
Plug
Mea-
suring
Adapter
Function Switch
Position
Function/Meaning
XX
All measurements
with protective
conductor
Potential difference ULbetween finger contact and PE (earth contact)
(frequency f 50 Hz)
Remedy: Check PE connection
Note: Only if is displayed: Measurement can nevertheless be
started by pressing the start key again.
XX I
 N
/ I
F
Z
L-N
/ Z
L-PE
/ R
E
1) Voltage too high (U > 253 V) for RCD test with direct current
2) U always U > 550 V with 500 mA
3) U > 440 V for IN/ IF
4) U > 253 V for IN/ IFwith 500 mA
5) U > 253 V for measurement with probe
XX I
 N
RCD is tripped too early or is defective.
Remedy: Test circuit for bias current
XX Z
L-PE RCD is tripped too early or is defective.
Remedy: Test with “DC + positive half-wave”.
XX I
 N
/ I
F
RCD tripped during touch voltage measurement.
Remedy: Check selected nominal test current.