Gossen MetraWatt METRISO PRO User manual

METRISO PRO
Analog Insulation, Low Resistance and Voltage Measurement Instrument 3-349-815-03
1/9.14
Operating Instructions
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2GMC-I Messtechnik GmbH
Overview of Included Features Scope of Delivery
1 Insulation and resistance measuring instrument
1 Factory calibration certificate
1 Set of batteries (8 pieces in battery holder)
1Carryingstrap
1 Alligator clip
1 KS17-4 cable set
1 Condensed operating instructions
1 Supplement Safety Information
– Detailed operating instructions for download from our website
at www.gossenmetrawatt.com
Battery Compartment Lid and Location of the Fuses
(housing bottom)
METRISO PRO
Article number M550R
Measurements:
RINS U = 50, 100, 250, 500, 1000 V
3
RLO 0.17 ... 4  3
U 10 ... 1000 V 3
Display Functions:
Scale illumination
3
Limit value LED (green/red) for:
additional acoustic signal,
limit values per VDE 0100
RINS RLO
Caution LED
for dangerous contact voltage
– When switched off
– For active test voltage
3
FUSE LED
For blown fuse
3
Battery level display 3
Special Functions:
Discharge capacitive devices under test
3
Safety shutdown (UBatt < 8 V) 3
Features:
Measuring category
CAT II 1000 V / CAT III 600 V / CAT IV 300 V
3
Test resistor: 10 M 3
Factory calibration certificate 3
a b
Replacement Fuse
Fuse Link
Battery Compartment Lid
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GMC-I Messtechnik GmbH 3
Inserting the Battery Holder (side view) Connections (housing top)
1Z550A accessory as option: test probe with measurement key and an additional
key for illuminating the measuring point, including shielded, plug-in connector
cable
Battery Holder
Battery Compartment Lid
Battery Holder
Contacts
Battery
Contact
Spring
User Interface
Compartment
Shielded
Cable
Test
Resistor
Test
Resistor
Test Probe with
Control Keys 1
Connector with
Shielded Cable,
Option KS-C (Z541F)
(G500/G10 G500/G1000)
Measuring Connections
+COM
+ COM
10 M
GUARD SHIELD
Guard connection
see section 5.4
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4GMC-I Messtechnik GmbH
User Interface
Red LED: limit value violated
Red LED:
– Interference voltage with device off
Function
Selector Switch
Guide for
Carrying Strap
Guide for
Carrying Strap
Green LED: limit value complied with
– Blinking indicates standby mode
Control Panel Keys
(see description on page 5)
Display Panel
(see description on page 5)
Refer to page 10 for a description of the LEDs.
– Test voltage active
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GMC-I Messtechnik GmbH 5
Control Panel Keys – Adjusting Screw
aSTART: Starts insulation resistance measurement depending
on rotary selector switch setting (see measuring ranges ➀and
➁), or low-resistance measurement with automatic polarity
reversal (see low-resistance measuring range ➂).
Reactivates the instrument from the standby mode.
bCONTIN./ZERO *
Starts long-term measurement for insulation and low resis-
tance (low resistance: polarity in one direction only).
Each measurement takes up to 3 minutes; the instrument is
then switched to standby. Reactivates the instrument from the
standby mode.
cBat. TEST: Starts the battery test (see battery level display ➄
and section 3.1).
d10k-1T/100k-100M
Switches between measuring ranges for insulation resistance
measurement (see measuring ranges
➀ and ➁ , as well as sec-
tion 5.2).
Reactivates the instrument from the standby mode.
Mechanical Zero Point – Adjusting Screw (e)
If necessary, use the adjusting screw (e) to set the pointer to the
mechanical zero point (measuring range lower limit for all measur-
ing ranges, except battery level indicator) with the switch in the
OFF position.
Electrical Zero Point – ZERO Function (Roffset)
ZERO function (Roffset): for subtracting cable resistance from the
measurement results with the help of the CONTIN. and 10k-1T/
100k-100M keys (see section 7.3).
* the supplementary labelling „ZERO“ depends on the product series
Analog Display Symbols
1Insulation resistance measuring range: 10 k... 1 T
LED ➀ lights up orange: this measuring range is active
LED ➀ blinks orange: open cable ends (special case with
50 V test voltage: full-scale pointer deflection of 1 G)
2Insulation resistance measuring range: 100 k... 100 M
LED ➁ lights up orange: this measuring range is active
3Low-resistance measuring range: 0 ... 5 
LED ➃blinks orange if the range is exceeded
4Voltage measuring range: 0 ... 1000 V
LED ➃ lights up orange: low-resistance measurement is active
LED ➃lights up orange: voltage measurement is active
5Battery level indicator :
Left-hand range limit: batteries low or weakly charged
Right-hand range limit: batteries full or fully charged
6Fuse link and electronic fuse:
FUSE ZERO/FUSE ➅ blinks red: blown fuse
Voltage measurement is still possible.
– Funktion ZERO (Roffset):
LED ZERO/FUSE ➅ lights up red permanently after
offset blancing, see section 7.3.
a b c d
e
1
2
4
5
6 3
➀
➁
➃
➅
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Contents Page Contents Page
1 Applications ...............................................................................7
2 Safety Features and Precautions ..............................................8
3 Initial Start-Up ...........................................................................9
3.1 Battery Test .....................................................................................9
3.2 Installing or Replacing Batteries .....................................................9
4 General Operation ....................................................................10
4.1 Switching On, Monitoring and Switching Off ................................10
4.2 Analog Display ...............................................................................11
5 Insulation Resistance Measurement
– Riso/Rins Function ...............................................................12
5.1 Connection ....................................................................................12
5.2 Executing the Measurement .........................................................12
5.3 Ending the Measurement – Safe Discharging ...............................14
5.4 Measurements with the Guard Cable ............................................14
6 Measuring Direct, Alternating and
Pulsating Voltage – V Function ................................................15
7
Measuring Low-Resistance of up to 5 
– RLO Function ........................................................................16
7.1 Measurement with Automatic Polarity Reversal ...........................17
7.2 Measurement with Manual Polarity Reversal ................................17
7.3 Taking Measurement Cables and Extension Cables into Account (up
to 5 ) – ZERO Function (Roffset) .................................................18
8 Test Resistor for Insulation Measurement for Checking the
Insulation Measuring Instrument .............................................18
9 Technical Data ........................................................................19
10
List of Abbreviations and their Meanings ..................................... 23
11 Maintenance ........................................................................... 24
11.1 Battery and Rechargeable Battery Operation ................................24
11.2 Fuses .............................................................................................24
11.2.1Fuse Link – ZERO/FUSE LED ...................................................................... 24
11.2.2Electronic Fuse – ZERO/FUSE LED ............................................................. 25
11.3 Housing .........................................................................................25
12 Recalibration ........................................................................... 26
13 Appendix ................................................................................. 26
13.1 Sample Connection Layouts for Insulation Resistance Measurement 26
13.2 Attaching the Test Probe Holder to the Carrying Strap .................29
13.3 Technical Data for Measurement Cables
(scope of delivery: KS17-4 safety cable set) .................................30
13.4 Optional Accessories (not included) ..............................................31
14 Repair and Replacement Parts Service
Calibration Center* and Rental Instrument Service ...................... 31
15 Product Support ...................................................................... 32
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GMC-I Messtechnik GmbH 7
1 Applications
These instruments fulfills all requirements of applicable European
and national EC directives. We confirm this with the CE mark. The
relevant declaration of conformity can be obtained from GMC-I
Messtechnik GmbH.
The METRISO PRO insulation and resistance measuring instru-
ment allows for quick and efficient testing of protective measures
in accordance with DIN VDE 0100, ÖVE-EN 1 (Austria), SEV 1000
(Switzerland), and regulations specific to other countries as well.
The device is equipped with a microprocessor and complies with
IEC/EN 61557 / VDE 0413 regulations:
Part 1: General requirements
Part 2: Insulation resistance measuring instruments
Part 4: Instruments for measuring resistance at earthing con-
ductors, protective conductors and equipotential bonding
Part 10: Combined measuring equipment for testing, measuring
or monitoring protective measures
as well as requirements per VDE 0701-0702:
Repair, modification and testing of electrical devices
The test instrument is especially well suited for:
•Systemssetup
• Initial start-up
• Periodic testing
• Troubleshooting in electrical systems
The following measurements and tests can be performed with the
insulation measuring instruments:
• Insulation Resistance
• Low-resistance
• Voltage
The following can also be tested by using a shielded measure-
ment cable:
• Floor covering electrostatic discharge capability
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2 Safety Features and Precautions
The electronic measuring and test instrument is manufactured
and tested in accordance with safety regulations IEC/EN 61010-
1/VDE 0411-1 and EN 61557. When used for its intended pur-
pose, safety of the operator, as well as that of the instrument, is
assured.
Read the operating instructions thoroughly and carefully before
using your instrument. Follow all instructions contained therein.
The measuring and test instrument may not be placed into ser-
vice:
• If the battery compartment lid has been removed
• If external damage is apparent
• If connector cable or measuring adapters are damaged
• If the instrument no longer functions flawlessly
• After extraordinary damage due to transport
• After a long period of storage under unfavorable conditions
(e.g. humidity, dust or extreme temperature)
Opening of Equipment / Repair
The equipment may be opened only by authorized service per-
sonnel to ensure the safe and correct operation of the equipment
and to keep the warranty valid.
Even original spare parts may be installed only by authorized ser-
vice personnel.
In case the equipment was opened by unauthorized personnel,
no warranty regarding personal safety, measurement accuracy,
conformity with applicable safety measures or any consequential
damage is granted by the manufacturer.
Meanings of Symbols on the Instrument
Warning concerning a point of danger
(attention, observe documentation!)
Protection class II device
CAT II / III Device assigned to measuring category
CAT II 1000 V / CAT III 600 V / CAT IV 300 V
EC mark of conformity
The device and included batteries may not be dis-
posed of with the trash. Further information regarding
the WEEE mark can be accessed on the Internet at
www.gossenmetrawatt.com by entering the search
term “WEEE”.
!
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GMC-I Messtechnik GmbH 9
3 Initial Start-Up
3.1 Battery Test
A battery test should be conducted after inserting the batteries, or
if none of the measuring range LEDs lights up during insulation
resistance measurement. Press and hold the Bat. TEST key to this
end. Pointer deflection within the scale for the battery test indi-
cates the condition of the batteries with an average load amount-
ing to a test voltage of 1000 V. The rotary selector switch position
is not taken into consideration. The left-hand scale limit repre-
sents minimum required supply voltage, and the right-hand limit
represent maximum available supply power.
Note
If the pointer is only deflected into the minimum supply
power range, several measurements can still be executed
with test voltages of less than 1000 V, because the bat-
tery test is conducted with a load which amounts to a test
voltage of 1000 V.
The instrument does not function if the batteries have been
depleted excessively, and alarm indication does not work either.
3.2 Installing or Replacing Batteries
New batteries must be inserted for initial start-up, or if only mini-
mal supply power is indicated.
Attention!
!
Before opening the battery compartment (see page 5 for
location), disconnect the instrument from the measuring
circuit (mains) at all poles.
Eight 1.5 V size AA batteries in accordance with IEC LR 6 are
required for operation of the insulation measuring instrument. Use
new alkaline manganese batteries only.
Rechargeable NiCd or NiMH batteries may also be used. These
can only be recharged externally. We recommend rechargeable
NiMH batteries.
Always replace batteries in complete sets.
Dispose of batteries in an environmentally sound fashion.
ÐLoosen both slotted screws for the battery compartment lid
on the back, and remove the lid.
ÐRemove the battery holder and insert eight 1.5 V size AA bat-
teries with correct polarity in accordance with the symbols.
Attention!
!
Make sure that all of the batteries are inserted with correct
polarity. If just one battery is inserted with reversed polar-
ity, it will not be recognized by the instrument and may
result in leakage from the batteries.
Ð
Push the battery holder into the battery compartment such that
the battery holder’s contacts touch the contact springs at the
bottom of the battery compartment (see drawing on page 3).
If the battery holder is not inserted as specified, the instrument
cannot be supplied with power.
ÐReplace the battery compartment lid and retighten the
screws.
Attention!
!
The instrument may only be placed into service if the
battery compartment lid is securely fastened!
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4 General Operation
The test leads are connected to the “+” and “COM” jacks.
When measuring electrostatic
discharge capacity for floor
coverings, the shielded cable
should also be connected to
the COM and SHIELD jacks (KS-C
accessory set, “cable set con-
sisting of measurement cable
and high-resistance measure-
ment cable for measurements
in the Grange” (see diagram). Be sure to observe color coding.
4.1 Switching On, Monitoring and Switching Off
The instrument is switched on as soon as the rotary switch is
turned to any position other than OFF.
If battery voltage falls below the allowable limit value (U < 8 V), the
instrument cannot be switched on, or it is immediately switched
off.
Measurement cannot be started in the resistance measuring
ranges in the event of interference voltage.
The instrument is switched to the standby mode after 3 minutes,
if neither the rotary switch nor any keys have been activated dur-
ing this time.
A brief acoustic signal is generated before the instrument
switches itself off automatically with the rotary switch in a position
other than OFF. Moreover, 6 brief acoustic signals indicate every
10 minutes that the device is still on standby. The device should
be switched off by setting the rotary selector switch to OFF in
order to save (rechargeable) batteries.
The instrument can be activated once again by pressing the START
key.
The instrument can be switched off manually by turning the rotary
switch to the OFF position.
For purposes of transport and maintenance, we recommend turn-
ing the rotary selector switch to the OFF position in order to avoid
switching the test instrument on inadvertently.
Start-Up Test
When the instrument is switched on, i.e. as soon as the rotary
switch is turned to any position other than OFF, all LEDs light up
briefly: limit, caution, blown fuse, insulation resistance measuring
ranges, voltage measurement and scale illumination.
Optical Indicators
1Function testing should be executed at regular intervals (see following section re-
garding testing the LEDs).
KS-C
(Z541F)
+
COM
SHIELD
GUARD
LED Status Function – Cause
Limit value indication
–Measuredinsulation resistance does not violate the limit
value.
– Measured low-resistance Rlo does not violate the limit
value.
Limit value indication
– Measured insulation resistance has fallen short of the limit
value.
– Measured low-resistance Rlo has exceeded the permissible
limit value.
Detection of interference voltage in the off state 1
If dangerous voltage of greater than 50 V is present at the measure-
ment inputs:
– Initialization of the insulation resistance and
low-resistance measurements is disabled.
– Presence of test voltage is indicated.
Limit
Green
Limit
Red
!
Red
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