Gossen MetraWatt MINITEST PRO User manual

Bedienungsanleitung
Operating Instructions
MINITEST PRO | (3P) MASTER
Testers per DIN VDE 0701-0702
Testers per DIN VDE 0701-0702 3-349-358-15
9/5.21

MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
Table of Contents
1 Safety Instructions ........................................................................................ 1
2 Applications................................................................................................... 3
2.1 Intended Use / Use for Intended Purpose................................................. 3
2.2 Use for Other than Intended Purpose ....................................................... 3
2.3 Liability and Guarantee............................................................................. 3
2.4 Opening the Instrument / Repairs............................................................. 3
3 Documentation.............................................................................................. 4
3.1 Identifiers ................................................................................................. 4
4 Getting Started .............................................................................................. 4
5 The Instrument .............................................................................................. 5
5.1 Scope of Delivery ..................................................................................... 5
5.2 Optional Accessories .............................................................................. 5
5.3 Device Overview....................................................................................... 6
5.3.1 Features................................................................................................ 6
5.3.2 Connections and Controls..................................................................... 7
5.3.3 Symbols on the Device and the Included Accessories........................... 8
5.4 Relevant Standards.................................................................................. 8
5.5 Technical Data ......................................................................................... 9
5.6 Characteristic Values.............................................................................. 10
6 Initial Startup ............................................................................................... 12
7 Performing Tests......................................................................................... 13
7.1 Test Sequence....................................................................................... 13
7.2 Descriptions of Individual Measurements................................................ 15
7.2.1 Measurements at the Test Socket(s) ................................................... 15
7.2.2 Measurements at the Mains Outlet(s) .................................................. 17
7.3 LED Test................................................................................................ 19
8 Logging Functions ...................................................................................... 19
8.1 Selecting the Operating Mode ................................................................ 19
8.2 Transmission Mode................................................................................ 20
8.3 Continuous Transmission ....................................................................... 20
8.4 Memory Mode (MINITEST Master and MINITEST 3P Master only) .......... 20
8.4.1 Activating the Memory Menu............................................................... 20
8.4.2 Selecting a Memory Function .............................................................. 20

Gossen Metrawatt GmbH MINITEST PRO | (3P) Master
8.4.3 Exiting the Memory Menu ................................................................... 21
8.4.4 Reading Out Stored Measured Values via a PC................................... 21
8.4.5 Safe Shutdown ................................................................................... 21
8.5 Barcode Reader Function (MINITEST Master and
MINITEST 3P Master only)21
9 Maintenance................................................................................................ 22
9.1 Housing ................................................................................................. 22
9.2 Replacing the Fuse ................................................................................ 22
9.3 Recalibration .......................................................................................... 23
10 Service and Support ................................................................................... 24
10.1 Product Support .................................................................................... 24
10.2 Repair and Replacement Parts Service
Calibration Center * and Rental Instrument Service24
10.3 Competent Partner ................................................................................ 24
11 CE Declaration ............................................................................................ 25
12 Returns and Environmentally Sound Disposal .......................................... 25

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MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
1 Safety Instructions
Observe this documentation, in particular all included safety information, in order to
protect yourself and others from injury, and to prevent damage to the instrument.
• Carefully and completely read and adhere to these operating instructions.
The respective document can be found at http://www.gossenmetrawatt.com.
Retain the document for future reference.
• Tests/measurements may only be performed by a qualified electrician, or under
the supervision and direction of a qualified electrician. The user must be
instructed by a qualified electrician concerning performance and evaluation of
the tests/measurements.
• 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.
• Use only the specified accessories (included in the scope of delivery or listed as
an option) with the instrument.
• Carefully and completely read and adhere to the product documentation for
optional accessories. Retain these documents for future reference.
• Use the instrument in undamaged condition only.
Inspect the instrument before use. Pay particular attention to damage, inter-
rupted 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 and 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 operation and secure them against
inadvertent use.
• If the instrument or accessories are damaged during use, for example if they’re
dropped, permanently remove the instrument/accessories from operation and
secure them against inadvertent use.
• Do not use the instrument and its accessories after long periods of storage
under unfavorable conditions (e.g. humidity, dust or extreme temperature).
• Do not use the instrument and its accessories after extraordinary stressing due
to transport.
• Only use the instrument and its accessories within the limits of the specified
technical data and conditions (ambient conditions, IP protection code, measur-
ing category etc.).
• Do not use the instrument in potentially explosive atmospheres.

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Gossen Metrawatt GmbH MINITEST PRO | (3P) Master
• Measurements within electrical systems are prohibited.
• The function test may only be performed after the device under test has suc-
cessfully passed the safety test while connected to the test socket!
• The instrument and the accessories may only be used for the tests/measure-
ments described in the documentation for the instrument.
• 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.
• Be prepared for the occurrence of unexpected voltages at devices under test
(for example, capacitors may be dangerously charged).
• Plugging in the measurement cables must not necessitate any undue force.
• Never touch conductive ends (e.g. of test probes).
• Fully unreel all measurement cables before starting a test/measurement. Never
perform a test/measurement with the measurement cable rolled up.

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MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
2 Applications
Please read this important information!
2.1 Intended Use / Use for Intended Purpose
The test instrument is used to test the electrical safety of single phase and 3-phase
electrical devices. The test instrument makes it possible to measure protective con-
ductor resistance, insulation resistance and differential or touch current.
MINITEST 3P Master:
The instrument is designed for connection to a 3-phase mains system with up to
32 A.
The MINITEST 3P Master can also be connected to all common CEE and earthing
contact outlets via the included adapter.
Safety of the operator, as well as that of the device, is only assured when it’s used
for its intended purpose.
2.2 Use for Other than Intended Purpose
Using the instrument for any purposes other than those described in the con-
densed operating instructions or these instrument operating instructions is contrary
to use for intended purpose.
2.3 Liability and Guarantee
Gossen Metrawatt GmbH assumes no liability for property damage, personal injury
or consequential damage resulting from improper or incorrect use of the product, in
particular due to failure to observe the product documentation. Furthermore, all
guarantee 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
The instrument may only be opened by authorized, trained personnel in order to
ensure flawless, safe operation and to assure that the guarantee isn’t rendered null
and void. Even original replacement parts may only be installed by authorized,
trained personnel.
Unauthorized modification of the device is prohibited.
If it can be ascertained that the device has been opened by unauthorized person-
nel, no guarantee claims can be honored by the manufacturer with regard to per-
sonal safety, measuring accuracy, compliance with applicable safety measures or
any consequential damages.

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Gossen Metrawatt GmbH MINITEST PRO | (3P) Master
3Documentation
3.1 Identifiers
The following identifiers are used in this documentation:
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.
“Safety Instructions”, 1
“Applications”, 3
“Documentation”, 4
2. Familiarize yourself with the instrument “The Instrument”, 5.
3. Perform and document measurements.
“Initial Startup”, 12
“Performing Tests”, 13
“Logging Functions”, 19
Identifier Meaning
Attention!
!
Warning
Safety information that must be complied with
Note!
Important
Important information which must be taken into consideration
and complied with
Prerequisite A condition etc. which must be fulfilled before a given action can
be taken
1. Procedural step Steps of a procedure which must be completed in the specified
order
Result Result of a procedural step
•Enumeration
–Enumeration
Bullet lists
Bild 1: Caption Description of the content of a figure
Table 1: Description of the content of a table
Footnote Comment

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MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
5 The Instrument
5.1 Scope of Delivery
Please check for completeness.
1 test instrument
Refer to the table for accessories:
5.2 Optional Accessories
MINITEST 3P Master (M712X) MINITEST Master (M712U) MINITEST Pro (M712D)
Probe cable with test probe ✘✘✘
Adapter, earthing contact plug to CEE coupling (3P+N+PE 32 A-6h) ✘––
Adapter plug (1P+N+PE 16 A) to CEE coupling (3P+N+PE 32 A-6h) ✘––
Adapter plug (3P+N+PE 16 A) to CEE coupling (3P+N+PE 32 A-6h) ✘––
Adapter plug (1P+N+PE 32 A) to CEE coupling (3P+N+PE 32 A-6h) ✘––
USB cable ✘✘✘
Operating instructions ✘✘✘
Description Type Article No.
Probe for measuring protective conductor resistance, e.g. at
rotating devices under test
Brush probe Z745G
Calibration adapter for test instruments per
DIN VDE 0701-0702/IEC 63353 (VDE 0751) (max. 200 mA)
SECU-cal 10 Z715A
Test adapter for electrical devices and extension cables with
CEE plug connectors
VL2 E Z745W
Barcode Readers and Printers, RFID Readers
See data sheet for ID systems
PC Evaluation Software
Information concerning the software can be found on the Internet at http://www.gossen-
metrawatt.com after accessing the respective product page.

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Gossen Metrawatt GmbH MINITEST PRO | (3P) Master
5.3 Device Overview
5.3.1 Features
*For series produced as of March 2007
Cases/Pouches
Case for MINITEST Master and MINITEST Pro Case Z740B
Universal carrying pouch for MINITEST Master and MINITEST Pro F2000 Z700D
Large universal carrying pouch for MINITEST 3P Master F2010 Z700F
MINITEST 3P Master MINITEST Master MINITEST Pro
Connection Types
Tests at single-phase DUTs ✘✘✘
Tests at 3-phase DUTs via additional test sockets
CEE 16A / CEE 32A ✘––
Interrupters
Fuse link for probe socket ✘✘✘
RCCB in the mains plug – ✘✘
Automatic circuit breaker ✘––
Logging Functions
2-line illuminated LCD panel * ✘✘✘
Memory for up to 2000 tests (10 measured values each) ✘✘ –
Key for transmitting measured values ✘✘✘
Key for saving measured values ✘✘ –
Data interface (USB port) ✘✘✘
Barcode reader socket (9-pin D-sub) ✘✘ –
Description Type Article No.

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MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
5.3.2 Connections and Controls
MINITEST Pro, MINITEST Master
MINITEST 3P Master
11
6
4
12
5
1
9
8
2
3
7
13
23
24
10
18 171615
22212019
9
8
1
2
3
14
10
4
5236
11

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Gossen Metrawatt GmbH MINITEST PRO | (3P) Master
5.3.3 Symbols on the Device and the Included Accessories
5.4 Relevant Standards
The instrument has been manufactured and tested in accordance with the follow-
ing safety regulations:
Warning concerning a point of danger
(attention, observe documentation!)
Double insulation (protection category II)
European conformity marking
The device may not be disposed of with household trash “Returns and Envi-
ronmentally Sound Disposal”, 25.
IEC 61010-1
EN 61010-1
VDE 0411-1
Safety requirements for electrical equipment for measurement,
control and laboratory use – general requirements
IEC 61557-2/-4
DIN EN 61557-2/-4
DIN VDE 0413-2/-4
Electrical safety in low-voltage systems up to
1000 V AC and 1500 V DC – Equipment for testing, measuring or
monitoring of protective measures
1 Mains power cable
2 Fuse link
(for the probe, 3)
3 Probe connector socket
For measurement of protective conduc-
tor SL (PE) or touch current IB(IT)
4 Rotary switch for selecting the desired
measuring function
5USBport
6 Key for transmitting or saving data
7 LEDs for indicating adherence to or vio-
lation of limit values
8 Earthing contact outlet
9 Earthing contact test socket
10 Probe connector socket
for insulation resistance measurement
(only required for protection category II)
11 LCD panel
12 On switch
13 Residual current test / off switch
14 Fuse for 16 A mains outlets
and mains switch
15 CEE test socket, 1P+N+PE 16 A-6h
16 CEE test socket, 3P+N+PE 16 A-6h
17 CEE test socket, 1P+N+PE 32 A-6h
18 CEE test socket, 3P+N+PE 32 A-6h
19 CEE outlet, 1P+N+PE 16 A-6h
20 CEE outlet, 3P+N+PE 16 A-6h
21 CEE outlet, 1P+N+PE 32 A-6h
22 CEE outlet, 3P+N+PE 32 A-6h
23 Barcode scanner socket
(9-pin D-sub) *
24 Probe cable
* Only with MINITEST Master and
MINITEST 3P Master
!

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MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
5.5 Technical Data
Mechanical
Design
Protection:
Housing: IP 44
(protection against ingress of solid foreign ob-
jects: 1.0 mm diameter, protection against
ingress of water: 4 = splash protected)
Connections: IP 20
(protection against ingress of solid foreign ob-
jects: 12.5 mm diameter, protection against
ingress of water: 0 = not protected)
(per DIN VDE 0470, part 1 / EN 60529)
Housing (W × H × D):
MINITEST Master / Pro:
200 × 150 × 77 mm
(without integrated outlets, grommets and ro-
tary switch)
MINITEST 3P Master:
350 × 160 × 125 mm
(without surface mounted outlets, grommets,
circuit breakers and rotary switch)
(overall dimensions not including outgoing cables)
Weight: MINITEST Master / Pro:approx. 1.5 kg
MINITEST 3P Master: approx. 3.3 kg
Display:
LCD
Dot matrix display, two lines of 20 characters
each
LEDs:
9 LEDs for indicating adherence to or violation
of limit values:
1 red, 7 yellow and 1 green
Ambient
Conditions
Operating temperature: 0 … +40 °C
Storage temperature: -20 ... +70 °C
Relative atmospheric
humidity: Max. 75%, no condensation allowed
Elevation: Max. 2000 m
Power
Supply
Line voltage: MINITEST Master / Pro: 230 V, 50 Hz
MINITEST 3P Master: 230/400 V, 50 Hz
Throughput rating:
MINITEST Master / Pro: max. 3700 VA
MINITEST 3P Master: max. 38.4 kVA
depending on load at mains outlet

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Gossen Metrawatt GmbH MINITEST PRO | (3P) Master
5.6 Characteristic Values
Measurements
* With automatic polarity reversal
Electrical
Safety
Nominal line voltage: 230 V
Test voltage: Mains + PE (mains) to test outlet, probe socket
SL/IBor RISO(PE/ITor RINS): 1.5 kV
Mains to PE (mains): 3 kV
Measuring category: CAT II 300 V
Protection category: I
per DIN EN 61140 / VDE 0140-1 / IEC 61140
Pollution degree: 2
Fuse: FF0.315H1000V or FF0.315H500V or
FF0.315H250V
MINITEST 3P Master only: 3 x C16A
Residual current
device
(MINITEST Master/Pro
only)
30 mA with undervoltage trigger
and inhibiting of automatic restart
Electro-
magnetic
Compatibility
(EMC)
Interference emission: EN 61326-1, class B
Interference immunity: EN 61326-1
Measured Quantity Measuring
Range
Reso-
lution Uno-load RiISC IN
Protective conductor
resistance
0 1.30 10 m< 5 V > 200 mA *
1.0 ... 99.9 100
m< 5 V –
Insulation resistance 0 9.99 M10 k520 V 
Ap-
prox.
5.0 kΩ
< 3.5
mA > 1 mA
Touch current measure-
ment (verification of
absence of voltage)
0 9.99 mA 10 A1k
Differential current
MINITEST Master / Pro
0.1 ...
9.99 mA~ 10 A
Differential current
MINITEST 3P Master
0.2 ...
9.99 mA~ 10 A

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MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
Intrinsic Error and Measuring Error
Influencing Quantities and Influence Error
Measured Quantity Intrinsic Uncertainty Measuring Uncertainty
Protective conductor resistance (5% rdg. + 4 d) (10% rdg. + 6 d)
Insulation resistance (7% rdg. + 2 d) (10% rdg. + 5 d)
Touch current measurement
(verification of absence of voltage)
(5% rdg. + 4 d) (10% rdg. + 5 d)
Differential current
MINITEST Master / Pro (5% rdg. + 6 d) (10% rdg. + 6 d)
Differential current
MINITEST 3P Master (5% rdg. + 10 d) (10% rdg. + 10 d)
Influencing Quantity /
Sphere of Influence
Influence Error
% rdg.
Change of position —
Change to test equipment supply
voltage 2.5
Temperature fluctuation Specified influence error applies per
10 K temperature change:
021 C and 25 40 C 1 for protective conductor resistance
0.5 for all other measuring ranges
Amount of current at DUT 2.5
Low frequency magnetic fields 2.5
DUT impedance 2.5
Capacitance during insulation
measurement 2.5
Waveform of measured current
49 51 Hz 2 with capacitive load
(for equivalent leakage current)
45 60 Hz 1 (for touch current)
2.5 for all other measuring ranges

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Gossen Metrawatt GmbH MINITEST PRO | (3P) Master
Reference Conditions
6InitialStartup
Connection
Connect the test instrument’s mains plug to the mains power outlet.
MINITEST 3P Master:
The instrument can be connected to all common CEE outlets with the help of the
mains connection adapters (included).
Attention!
!
Dangerous Voltage
Ensure correct polarity when connecting via the earthing contact plug
adapter! In case of non-compliance, dangerous voltage is present at the neu-
tral terminal of the CEE outlet, even when the test instrument is switched off.
Switching On and Off
MINITEST 3P Master:
The instrument is switched on and off via the 3-pole circuit breaker (automatic cir-
cuit breaker).
MINITEST Master / Pro:
The instrument can then be switched on with the green power switch located on
the integrated RCD. It can be switched back off again with the blue test key.
Ambient temperature: +23 C 2K
Relative atmospheric
humidity:
40 to 60%
Line voltage: MINITEST Master / Pro: 230 V 1%
MINITEST 3P Master: 230/400 V 1%
Measured quantity
frequency:
50 Hz 0.2%
Measured quantity
waveform:
Sinusoidal
(deviation between TRMS and rectified value 0.5%)

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MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
7 Performing Tests
Attention!
!
MINITEST Master / Pro:
The instrument may only be connected to electrical systems with 230/240 V
(e.g. IEC 60346, VDE 0100) which are protected with a fuse or circuit breaker
with a maximum rating of 16 A.
Attention!
!
MINITEST 3P Master:
At any given time, only one device under test may be connected to an outlet/
socket because all of the mains outlets and test sockets are connected in
parallel.
7.1 Test Sequence
Testing for electrical safety always begins with a visual inspection. The measure-
ments are then conducted in the order in which they appear next to the selector
switch on the test instrument, from top to bottom.
For each type of measurement, the test instrument evaluates the measured values
and indicates whether or not limit values in accordance with DIN VDE 0701-0702
have been adhered to by means of an LED array.
Indicator Meaning
Green LED The measured value is better than the strictest limit value.
Red LED The measured value is worse than the most lenient limit value.
Yellow LED The limit value is between the strictest and the most lenient limit val-
ues. Whether or not the DUT passes testing depends upon it’s classi-
fication.
Evaluation should be conducted by a qualified electrician.

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Gossen Metrawatt GmbH MINITEST PRO | (3P) Master
The number and type of required measurements are determined according to the
classification of the device under test:
* MINITEST 3P Master only
Device under test
Connect the DUT to the test socket.
Connect the DUT to the
mains outlet.
– Switch the DUT on.
Protective
conductor
resistance
Probe
socket SL/IB
(PE/IT)
Protective
conductor
resistance
Permanent,
probe
socket SL/IB
(PE/IT)
Insulation
resistance
No probe
required
Insulation
resistance
Probe
socket RISO
(RINS)
Differential
current
No probe
required
Touch
current
Probe
socket SL/IB
(PE/IT)
Protection Category I
Earth contact plug
All exposed
parts are
connected
to PE
✘✘
✘
Tes t wi t h the
mains plug
in both posi-
tions.
With ex-
posed
parts which
are not
connected
to PE
✘
✘
Tes t wi t h the
mains plug
in both posi-
tions.
✘
Test with the
mains plug
in both posi-
tions.
CEE plug *
All exposed
parts are
connected
to PE
✘✘✘
With ex-
posed
parts which
are not
connected
to PE
✘✘✘✘
Permanently
connected DUT ✘✘
Protection Category II
With Euro plug /
earthing con-
tact plug
✘
✘
Test with the
mains plug
in both posi-
tions.

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MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
7.2 Descriptions of Individual Measurements
7.2.1 Measurements at the Test Socket(s)
Protective Conductor Resistance, RPE SOCKET
The probe must be plugged into the SONDE SL/IB(PROBE PE/IT) socket in order to
measure protective conductor resistance. Measurement is performed between the
protective conductor terminal at the test outlet and the SONDE SL/IB(PROBE PE/IT)
socket.
Protective Conductor Resistance, RPE Permanent
This measurement is used for testing the protective conductor at permanently con-
nected devices. The test instrument must be connected to the same supply circuit
as the device under test during measurement.
Attention!
!
Good test results may be obtained with parallel ground connections, al-
though the protective conductor is interrupted.
The probe must be plugged into the SONDE SL/IB (PROBE PE/IT) socket in order to
measure protective conductor resistance. Measurement is performed between the
protective conductor terminal at the mains connection and the SONDE SL/IB
(PROBE PE/IT) socket.
Testing is performed up through a resistance value of approximately 1.3 with
automatic polarity reversal.
Protective conductor resistance and test current are displayed at the LCD.
Use of mains outlet number depending on mains connection
(All test sockets, as well as mains outlets numbered 8 and 19, can
always be used regardless of whether or not mains connection
adapters are used.)
Mains outlet number
20 21 22
Mains connection with mains plug (3P+N+PE 32 A) ✘✘ ✘
Connection with adapter – earthing contact plug to CEE coupling
(3P+N+PE 32 A-6h) –✘
Max. 16 A –
Connection with adapter – plug (1P+N+PE 16 A) to CEE coupling
(3P+N+PE 32 A-6h) –✘
Max. 16 A –
Connection with adapter – plug (3P+N+PE 16 A) to CEE coupling
(3P+N+PE 32 A-6h) ✘✘
Max. 16 A
✘
Max. 16 A
Connection with adapter – plug (1P+N+PE 32 A) to CEE coupling
(3P+N+PE 32 A-6h) –✘–

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Gossen Metrawatt GmbH MINITEST PRO | (3P) Master
Checking the Zero Point and the Fuse
The zero point and the internal fuse can be checked by inserting the plug attached
to the test probe cable into the SONDE RISO (PROBE RINS) socket and the tip of the test
probe into the SONDE SL/IB(PROBE PE/IT) socket with the selector switch in the
RSL DOSE (RPE SOCKET) or (RPE PERM) setting. The displayed value should not exceed
100 m.
Attention!
!
The test probe must be plugged in to the SONDE SL/IB(PROBE PE/IT) socket for
this test!
Attention!
!
Use only the probe cable which is included with the test instrument. If a dif-
ferent probe cable is used:
– The measured value may be distorted.
– The test instrument may be damaged.
– Malfunctioning may occur.
Note!
If a current of 0 mA is displayed, the fuse is most likely blown. Check and
replace the fuse if necessary “Replacing the Fuse”, 22.
Insulation Resistance RINS
Various test types are provided for the measurement of insulation resistance. The
test type is selected automatically when the test probe is plugged into the probe
connector socket (10).
Attention!
!
Use only the original test probe cable.
Test type switching cannot be assured if other test probe cables are used.
Attention!
!
Testing is conducted with up to 500 V. Current limiting is utilized
(I < 3.5 mA), but if the terminals (L or N) are touched, electrical shock may
occur which could result in consequential accidents.

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MINITEST PRO | (3P) Master Gossen Metrawatt GmbH
• For protection category I DUTs without exposed conductive parts:
test insulation between L/N and PE at the test outlet.
No test probe cable may be plugged into the SONDE RISO (PROBE RINS) socket for this
test!
• For protection category II
or protection category I DUTs
with exposed conductive parts
which are not connected to the protective conductor:
test between L/N at the test outlet and the SONDE RISO (PROBE RINS)socket.
The test probe must be plugged into the SONDE RISO (PROBE RINS) socket for this test!
Insulation resistance and test voltage are displayed at the LCD.
Discharging the Device Under Test
The device under test is automatically discharged when the insulation test is
switched off − turn switch to RSL or ID(RPE or ID).
The LEDs light up in quick succession from left to right during discharging.
Residual voltage also appears at the display.
Leave the DUT connected to the test instrument during the discharging sequence.
7.2.2 Measurements at the Mains Outlet(s)
Differential and touch current are measured at the mains outlet(s). The DUT must
be unplugged, and plugged back in again.
Attention!
!
Voltage is always present at the mains outlet(s) as soon as the test instru-
ment is switched on.
The DUT must be switched off before it’s connected to the mains outlet.
Attention!
!
Danger of injury due to hazardous touch voltage.
Do not touch any conductive parts during measurement. They may conduct
dangerous touch voltage during measurement because the DUT is operated
with mains voltage while being tested.
(MINITEST Master / Pro: mains power is disconnected if leakage current ex-
ceeds approximately 15 mA.)