Operating Instructions
METRATESTERâ4, 5 and 5-F
Tester for DIN VDE 0701-1:2000 and 0702:1995
3-348-580-15
10/5.02
METRATESTER 4
(8) (9) (10) (11) (12)
(7)
(6) (5)
(3a)
(4)
(2)
(1)
(3)
(1) Mains plug
(take-up spool at back of housing
for mains cable)
(2) Signal lamp for testing the
mains protective conductor
(3) Alligator clips for attachment
to the test probe (3a)
(3a) Test probe
(4) Contacting surface for contact finger
(5) Measuring range selector switch
(6) Connector jack/terminal for testing for
the absence of voltage at conductive
parts at the DUT per DIN VDE 0701
Part 240
(7) Mains outlet
(8) Test socket
2 GOSSEN-METRAWATT
(9) Connector jack/terminal for DUT
phase conductors (wired parallel
to the socket)
(10) Connector jack/terminal for DUT
protective conductor (wired parallel
to test socket)
(11) LCD display (description see page 29)
(12) Carrying handle
(13) Error lamp (METRATESTER
(14) Infrared interface
(METRATESTER
(15) Transmission key
(METRATESTER
â
5 only)
â
5-F only)
â
5/5-F only)
METRATESTERâ5/5-F
(1)
(4)
(13)
(15)
(2)
(8) (9) (10) (11) (12)
(7)
(3a)
(6) (5)
(14)
(3)
METRATESTER
Residual
Current
I
I
Diff
Display text subject to change without notice.
GOSSEN-METRAWATT 3
â
mA I
Diff
mA I
5/5-F Display
Secondary
Current
Netz
Netz
A
A
Indication of Limit Values
for DIN VDE 0702: 1995
<0.5
R
ISO
R
SL
I
EA
I
A
<2.0
>0.3
>1.0
>7.0
>15
>0.25
>0.5
MW
W
mA
mA
Insulation
Resistance
P
E
Resistance
Equivalent
Leakage Current
Leakage Current/
Contact Current
KS 13 Accessory Cable Set
Contents Page
1 Safety Features and Precautions .................................................................................. 6
2 Applications ...................................................................................................................7
3 Operating and Display Elements ...................................................................................7
3.1 Error and Limit Value Messages ....................................................................................................... 8
4 Mains Connection ..........................................................................................................9
4.1 Connecting the Tester ...................................................................................................................... 9
4.2 Testing Protective Conductor Potential ............................................................................................. 10
4.3 Measuring Mains Voltage ................................................................................................................ 10
4.4 Connecting the Device Under Test to the Test Instrument ................................................................. 11
4.4.1 Safety Class I DUT with Mains Plug ................................................................................................ 11
4.4.2 Safety Class II DUT ........................................................................................................................ 11
4.4.3 DUT Without Mains Plug or Safety Class III DUT ............................................................................... 11
4.4.4 3-Phase DUT ................................................................................................................................. 11
4.5 General Measuring Procedures ....................................................................................................... 12
4.6 Residual Current Monitoring (for METRATESTER
5 Testing Devices per DIN VDE 0701, Part 1: 2000 ........................................................ 13
5.1 General ......................................................................................................................................... 13
5.2 Visual Inspection ............................................................................................................................ 15
5.3 Measuring Protective Conductor Resistance ..................................................................................... 15
5.4 Measuring Insulation Resistance ..................................................................................................... 16
5.5 Measuring Equivalent Leakage Current ............................................................................................ 16
5.6 Measuring Contact Current ............................................................................................................. 17
5.7 Measuring Residual Current (METRATESTER
‚
5/5-F only) .............................................................. 12
‚
5/5-F only) ................................................................... 17
4 GOSSEN-METRAWATT
6 Testing Devices per DIN VDE 0702:1995 .....................................................................18
6.1 General ..........................................................................................................................................18
6.2 Measuring Protective Conductor Resistance .....................................................................................18
6.3 Measuring Insulation Resistance ......................................................................................................19
6.4 Measuring Equivalent Leakage Current .............................................................................................20
6.5 Measuring Contact Current ..............................................................................................................20
6.6 Measuring Residual Current (METRATESTER
‚
5/5-F only) ...................................................................20
7 Testing Data Processing Systems and Office Machines per DIN VDE 0701, Part 240 .21
7.1 General ..........................................................................................................................................21
7.2 Visual Inspection .............................................................................................................................21
7.3 Protective Conductor Test ................................................................................................................21
7.4 Testing for the Absence of Voltage at User Accessible, Exposed Conductive Parts ...............................23
8 Measuring Load Current from the Mains Outlet ..........................................................24
‚
9 METRATESTER
10 METRATESTER
10.1 Applications ....................................................................................................................................26
10.2 Initial Start-Up .................................................................................................................................26
10.3 Using the Radio Interface .................................................................................................................26
10.4 Radio Interface Characteristic Values ................................................................................................26
5 Infrared Interface .............................................................................25
‚
5-F Radio Interface .............................................................................26
11 Technical Data .............................................................................................................28
12 Maintenance ................................................................................................................30
13 Repair and Replacement Parts Service
DKD Calibration Lab
and Rental Instrument Service ....................................................................................31
14 Product Support ..........................................................................................................31
GOSSEN-METRAWATT 5
1 Safety Features and Precautions
The tester is manufactured and tested in accordance with the following standards:
IEC/EN 61010-1/
VDE 0411-1 Safety regulations for electrical measuring, control,
and DIN VDE 0404 Devices for the technical safety inspection of electrical equipment;
When used for its intended purpose, the safety of the user, the test instrument and the device
under test (electrical equipment) is assured.
Read the operating instructions carefully and completely before placing your test instrument into service, and follow all instructions contained therein. Make sure that the operating instructions are available to all users of the instrument.
The tests may only be conducted under the supervision of a qualified electrician. The user must be instructed by a qualified electrician in the perfomance and evaluation of the test.
Observe the following safety precautions:
• The device may only be connected to a mains outlet rated at 230 V which is protected
with a fuse or circuit breaker rated at max. 16A.
• No measurements within electrical systems are allowed.
• Be prepared for the occurrence of unexpected voltages at devices under test. For example, capacitors may be dangerously charged.
• Make certain that connector cables are not damaged, e.g. damaged insulation, interruptions etc.
Attention!
!
Devices under test may only be connected to the mains outlet after they have
successfully completed safety testing in accordance with DIN VDE 0701 or
DIN VDE 702!
regulating and laboratory devices – general requirements
Part 1: general requirements, and Part 2:
periodic device testing
Repair, Parts Replacement and Balancing
Voltage conducting parts may be exposed when the device is opened. The device must be
disconnected from all sources of voltage before repair, replacement of parts or balancing. If
repair or balancing of an open, live device cannot be avoided, this may only be performed by
trained personnel who are familiar with the dangers involved.
Errors and Extraordinary Strains
If it may be assumed that the device can no longer be operated safely, it must be removed
from service and secured against unintentional use. Safe use can no longer be relied upon,
• if the device demonstrates visible damage,
• if the device no longer functions,
• after lengthy periods of storage under unfavorable conditions,
• after excessive, transport related strains.
Approvals
Branding of the METRATESTER
has been approved by VDE testing authorities.
6 GOSSEN-METRAWATT
â
4 and 5 testers with the VDE GS mark
2 Applications
The tester is intended for the testing and measurement of repaired or modified electrical
devices in accordance with DIN VDE 0701 or DIN VDE 702. These regulations require the
measurement of protective conductor resistance, insulation resistance and equivalent leakage current for repaired or modified electrical devices, as well as testing for the absence of
voltage at exposed, conductive parts for data processing systems and office machines.
Testing for the absence of voltage at the mains connection protective conductor and line voltage measurements can also be performed with this instrument. The device under test can be
connected to mains power at the mains outlet integrated into the tester, which provides for
the measurement of power consumption and the testing of functions.
Attention!
!
Limit values displayed at the instrument make reference to periodic testing
requirements set forth in VDE 0702: 1995.
3 Operating and Display Elements
(1) Mains Plug
The tester is connected to the 230 V mains outlet with the mains plug. If no earthing contact
socket is available, or if only three-phase current is available, the KS13 cable set can be used
to establish a connection.
The mains connection must be fused. Maximum nominal rating: 16 A!
(2) PE Signal Lamp for Protective Conductor Testing
The PE signal lamp lights up, if a potential difference of
between the contacting surface (4) and the earthing contact at the mains plug (1).
(3) Alligator clip (gripper clip for attachment to the test probe)
Connect the housing of the device under test with the alligator clip for measurement of protective conductor resistance.
(4) Contacting Surface for Contact Finger
The PE signal lamp (2) lights up, if a potential difference of
protective conductor at the mains plug (1) and the contacting surface.
The contacting surface is electrically isolated from all terminals, as well as from the measuring
circuit, and thus conforms to protection class II!
(5) Measuring Range Selector Switch
Measuring ranges can be selected with the measuring range selector switch. Displayed values at intermediate switch positions have no significance.
(6) Connector Jack/Terminal for Measurement of Contact Current at Conductive
Components at the Device Under Test
This terminal is intended for the measurement of contact current at exposed conductive parts
which are not connected to the protective conductor (see chapter 7.4, page 23).
(7) Mains Outlet
The DUT can be connected to the integrated mains outlet for the measurement of power
consumption and functions testing.
METRATESTER
Overcurrent protection is provided by the mains fuse or circuit breaker, see (1).
â
5/5-F: Residual current measurement is performed in this way as well.
³ 100 V occurs
³ 100 V occurs between the PE
GOSSEN-METRAWATT 7
(8) Test Socket
The DUT is connected to the test socket for the measurement of protective conductor resistance, insulation resistance and equivalent leakage current in accordance with DIN VDE 0701
and DIN VDE 0702, if the DUT is equipped with a mains plug.
(9) Connector Jack/Terminal for DUT Phase Conductors
This terminal is wired in parallel to the two short-circuited phase conductor terminals at the
test socket (8). The DUT phase conductors can be connected to this jack/terminal, if the DUT
is not equipped with a mains plug.
(10) Connector Jack/Terminal for DUT Protective Conductor
This terminal is wired in parallel to the p rotective conductor terminal a t the test socket (8). The
DUT protective conductor can be connected to this jack/terminal, if the DUT is not equipped
with an earthing contact plug. Beyond this, exposed conductive parts at the device under
test must be connected to this jack for insulation testing and the measurement of equivalent
leakage current.
(11) LCD Display
Measured values are displayed in digital form at the LCD.
(12) Carrying Handle
The carrying handle can be folded out.
(13) Error Lamp
The red error lamp indicates that limit values have been exceeded during the measurement of
protective conductor and insulation resistance, equivalent leakage, contact and leakage current, as well as residual current. The limit values apply for periodic testing in accordance with
DIN VDE 0702:1995.
KS 13 Accessory Cable Set
The KS 13 cable set consists of a adapter socket with three permanently connected cables,
3 measurement cables, 3 plug-on pick-off clips and 2 plug-on test probes. With the KS 13
the tester and the DUT can be connected, even if no earthing contact socket is available for
the mains connection, or no earthing contact plug is present at the DUT.
3.1 Error and Limit Value Messages
Error Message METRATESTERâ4/5/5-F Condition PE Signal Lamp
Protective conductor potential, at mains U
³ 25 V If contact surface is contacted
B
The following limit values apply for DIN VDE 0702: 1995
Error Messages
METRATESTER
Protective conductor resistance R
Insulation resistance R
Equivalent leakage current I
Leakage current / contact current
(substantiation of absence of voltage)
Residual current I
â
5/5-F
Condition Red Error Lamp
>0.3W· · —
SL
R
>1W· · ·
SL
<0.5MW· · ·
ISO
R
<2.0MW· · —
ISO
>7.0mA ··—
EA
I
>15mA ···
EA
IA>0.25mA ··—
I
>0.5mA ···
A
³ 3.5 mA · — ·
Diff
Continuously Lit
Limit Values
are Displayed
Continuous
Acoustic Signal
8 GOSSEN-METRAWATT
Residual Current Limit Value Violations
The METRATESTER
itoring function. If the red error lamp lights up and no message regarding a limit value violation
appears at the display, residual current at the mains outlet is dangerously high – regardless of
the selector switch setting. If this is the case, it is advisable to measure residual current (differential current) by turning the selector switch to the “I
Only the displayed numeric value should be considered when evaluating residual current with
the selector switch in the “I
of residual current monitoring for values of as low as approximately 3.2 mA. The error lamp
lights up in any case as of 3.5 mA.
â
5/5-F is equipped with a selector switch independent, residual current mon-
” position.
DIFF
” position. The error lamp may be caused to light up as a result
DIFF
4 Mains Connection
4.1 Connecting the Tester
➭ Connect the tester to the 230 V mains with the mains plug (1). If no earthing contact
socket is available, or if only a three-phase socket is available, connection of the phase
conductors, the neutral conductor and the PE conductor can be accomplished with the
help of the adapter socket. It includes 3 permanently connected cables and is included
with the KS 13 accessory cable set.
KS13
L1
N
yellow-green
PE
L1
KS13
L2
L3
N
yellow-green
PE
L1
KS13
L2
L3
N
yellow-green
Attention!
!
The mains connection must be fused! The fuse may not exceed a rating of 16 A!
The pick-off clips on the cables at the adapter socket may only be connected in the
voltage-free condition!
If mains voltage is present, characters are displayed at the LCD regardless of the position of
the measuring range selector switch, even if no DUT has been connected. Thus the presence
of characters at the display indicates the presence of voltage – independent of measuring
range selector switch position.
The mains voltage value is indicated at the display in the “250 V~” selector switch position.
In all other switch detent positions, characters are displayed which have no correlation to a
measured value, if a DUT has not been connected.
only possible in TN-C systems
GOSSEN-METRAWATT 9
4.2 Testing Protective Conductor Potential
➭ Bring the contact finger into contact with the contacting surface (4) and, at the same
time, with a grounded object (e.g. a water pipe).
The PE signal lamp (3) must not light up! Potential between the mains plug protective
conductor (1)
Note!
+
The PE signal lamp (3) does not light up, if no mains voltage is present between L and
N at the mains plug (1), or if L and PE are reversed at the mains connection. If, after
having connected the DUT in accordance with chapter 4.1, page 9, you determine,
that no characters are displayed at the LCD, the mains connection should first be
inspected – e.g. with the PROFiTESTâ0100S-II tester.
However, if the PE signal lamp (3) lights up when contact is made with the contacting surface
(4), potential between the protective conductor at the mains plug (1) and the contacting surface (4) is
Note!
+
Stray voltages may occur due to handling of the DUT, which cause the PE signal lamp
(3) to light up. For example, this may occur if a device is held in the hand which has
been connected to the test socket (8) due to the resultant occurrence of a capacitive
voltage divider. Touch a grounded object as described above in this case.
Attention!
!
If testing of protective conductor potential indicates that voltage is present at the mains
protective conductor, no measurements may be performed with the tester. In such a case
voltage is also present at the exposed earthing contacts of the mains outlet (7) and at
the jack (6), which may represent a hazard for the user. Immediately disconnect the
tester from the mains and arrange for the correction of the mains connection error.
Voltage at the mains protective conductor also distorts measured values for the
following tests:
– Measurement of contact current per DIN VDE 0701:2000 or DIN VDE 0702:1995
– Absence of voltage per DIN VDE 0701-240:1986 (chapter 7.4, page 23)
– Residual current measurement (METRATESTERâ5/5-F only)
and the contacting surface (4) is then £ 100 V.
³ 25 V, i.e. voltage is present at the protective conductor.
4.3 Measuring Mains Voltage
➭ Set the measuring range selector switch to “250 V~”
➭ Read the measured value at the LCD.
Mains voltage must lie within the allowable range of 207 to 253 V.
10 GOSSEN-METRAWATT
4.4 Connecting the Device Under Test to the Test Instrument
The DUT must be connected to the test socket (8), or to the jacks or terminals (9 and 10)
which are connected in parallel to the test socket for the measurement of protective conductor resistance, insulation resistance and equivalent leakage current. Terminal (9) is connected
to the short-circuited phase conductor jacks at the test socket (8), and terminal (10) is
connected to the earthing contact at the test socket (8). Use one of the following test setups,
depending upon the type of device under test.
4.4.1 Safety Class I DUT with Mains Plug
To housing for measurement of protective conductor resistance
To test socket
Switch the DUT on!
4.4.2 Safety Class II DUT
Tes t c ab le , e .g . K S 13
To test socket
Switch the DUT on!
To e xpo se d m etal
parts
4.4.3 DUT Without Mains Plug or Safety Class III DUT
To housing for measurement of protective conductor resistance
Switch the DUT on!
L1
N
PE
SCIII
KS13
4.4.4 3-Phase DUT
To housing for measurement of protective conductor resistance
Switch the DUT on!
L1
L2
L3
N
PE
GOSSEN-METRAWATT 11
4.5 General Measuring Procedures
Line voltage must lie within the allowable range of 207 to 253 V for all of the following measurements. This assures that the accuracy of displayed measured values corresponds with
the values specified under “Technical Data” (chapter 11, page 28).
Line voltage can be measured by setting the measuring range selector switch to the “250 V”
position (see chapter 4.3, page 10).
Measuring ranges for the measurement of protective conductor resistance, insulation resistance, equivalent leakage current and contact current are protected against overload in the
event that interference voltages of up to 250 V are applied inadvertently.
Always start with the measurement of protective conductor resistance for safety class I
devices. Insulation resistance and equivalent leakage current cannot be measured if the protective conductor does not function properly. This connection must be established externally
for safety class II devices (see chapter 4.4.2).
Note!
+
Please note that overflow is indicated at the display during the measurement of protective conductor resistance and insulation resistance, if the terminals are open or if
the upper range limit is exceeded. In this case, only the character “1” is displayed at
the left-hand side of the LCD (11).
Attention!
!
Measuring current is reduced after approximately 10 minutes in the event of a
long-term short-circuit during insulation testing. Excessive temperature is indicated
at the display in this case (see chapter 11 “Display – Excessive Temp.”). If this display
appears, nominal current of 1 mA as required by DIN VDE 0413 and DIN VDE 0701
is no longer assured. After the short-circuit has been eliminated, and after a brief
cool-down period, the message is cleared from the display and subsequent
measurements once again fulfill VDE requirements.
Evaluating Measured Values
In order to make absolutely sure that limit values for insulation resistance are not fallen short
of, instrument measuring error must be taken into consideration. Minimum required display
values for insulation resistance can be taken from the following table.These values take maximum instrument error into consideration (under nominal conditions of use). The indicated
values correspond to the required limit values (DIN VDE 0413, part 1). Intermediate values
can be interpolated.
Limit Value MW Minimum Display Value, METRATESTERâ4 Minimum Display Value,
0.25 0.280
0.3 0.335 0.38
0.5 0.555 0.60
1.0 1.105 1.15
2.0 2.25
7.0 7.75 7.75
10.0 11.05 11.05
4.6 Residual Current Monitoring (for METRATESTER
For your safety, residual current at the DUT connected to the mains outlet is continuously
monitored by METRATESTER
â
5/5-F instruments. If residual current reaches a value of
W range
2M
20 M
W range
â
5/5-F only)
METRATESTER
0.33
2.25
â
5/5-F
greater than 3.5 mA, danger is indicated by means of a continuous acoustic signal.
Automatic shutdown does not occur (see chapter 3.1, page 8).
12 GOSSEN-METRAWATT
5 Testing Devices per DIN VDE 0701, Part 1: 2000
The limit values specified in the following chapters correspond to current revision levels of
official standards at the time of going to print. Please note that normative legislation is continuously updated to meet the safety requirements necessitated by changing market situations,
and that the listed limit values are thus subject to change. Please contact our update service
department in order to adapt test instruments to new standards.
5.1 General
According to DIN VDE 0701, part 1, edition 2000, repaired or modified electrical devices
must provide users with the same protection against electrical energy as is offered by new
devices. The following tests must be performed to this end, in the order indicated:
1 Visual inspection
2 Protective conductor resistance
3 Insulating characteristics:
if technically sensible, i.e. if the DUT does not include any all-pole,
electrically actuated switches:
– Insulation resistance followed by protective conductor current or equivalent leakage
current
– Other: leakage current during operation (protective conductor current and contact
current), safety extra-low voltage (only at connecting points for safety extra-low
voltage generated within the device under test)
4Function test
5 Labelling inspection
6Documentation
Note!
+
Measurement of residual current is only possible with the METRATESTERâ5/5-F.
Changes to DIN VDE 0701-1: 1993
• The standard has been completely revised as regards both layout and technical aspects.
• Test procedures have been adopted for devices whose insulation characteristics cannot
be fully evaluated before initial start-up.
• The limit values for protective conductor resistance and insulation testing have been
re-specified.
• Device-specific supplements in parts 10 through 13 and 260 have been integrated by
means of device-specific appendices E through H in part 1.
• In order to substantiate the insulation characteristics of the device under test, measure-
ment of leakage current with line voltage has been additionally prescribed. This represents a
stiffening of previous stipulations, which takes the ever increasing percentage of devices
with capacitive circuitry into consideration.
• Protective conductor resistance values have been aligned to DIN VDE 0702.
The limit value is:
–0.3
W (for up to 5 meters) plus 0.1 W for each additional 7.5 meters.
• The protective conductor for safety class I hand-held electric tools can now be tested
with minimal test currents as well.
GOSSEN-METRAWATT 13
• Insulation resistance for safety class I has been redefined to 1 MW, and to 0.3 MW for
devices with heating elements. This test is required for all devices for which all charged
insulation is monitored during testing (practically all devices without electrically actuated,
all-pole relays).
The limit values are:
– Safety class I devices under test: 1 M
W
– Safety class I DUTs with heating elements: 0.3 MW
– Safety class II devices under test: 2 MW
– Safety class III devices under test: 0.25 MW
– Test voltage (to 0.5 MW) 500 V
The limit value for equivalent leakage current has been adapted to the limit value for
protective conductor current. As opposed to the 1993 version of the regulation, the insulation
test must be passed. Measurement of protective conductor current, by means of either the
residual current method or measurement of equivalent leakage current, must always be
performed and passed after insulation resistance measurement.
• Equivalent Leakage Current
This test must be performed after insulation testing has been passed. The measured
value must be corrected such that it corresponds to the measured value which would
result at line voltage. The METRATESTER
â
performs this function electronically.
The limit values are:
– 3.5 mA for safety class I devices whose exposed conductive parts are all connected
to the protective conductor
– 0.5 mA for devices with exposed conductive parts which are not connected to the
protective conductor
• Protective Conductor Current
This test is required for all safety class I devices for which insulation resistance cannot be
measured, and for which all exposed conductive parts are connected to the protective
conductor. If non-polarized mains plugs are used, the test must be performed with the
mains plug poled in both directions.
The following test methods are permissible:
– Direct method if the device under test is set up under insulated conditions
– Residual current method for cases where data transmission cables and gas and water
supply lines cannot be disconnected
Regardless of the test method, the limit values are:
– 1 mA/kW for devices under test with heating elements
and a connected load of greater than 3.5 kW
– 3.5 mA for all other devices under test
• Contact Current
This test is required for all devices whose insulation resistance cannot be measured, and
which include exposed conductive parts which are not connected to the protective conductor. If non-polarized mains plugs are used, the test must be performed with the mains
plug poled in both directions.
The following test methods are permissible:
– Direct method if the device under test is set up under insulated conditions
– Residual current method, only possible if no protective conductor is present
The limit value is 0.5 mA for both measuring methods.
14 GOSSEN-METRAWATT
5.2 Visual Inspection
Visual inspection is performed prior to measurements with the test instrument.
Visual inspection includes:
• Housing and protective covers
• Connections and external cables including fasteners and plugs
• Visible condition of insulation material
• Strain reliefs for cables, anti-kink devices and cable routing
• Fuse links which are accessible to the user (including labeling and inspection
of fuse ratings)
• Cooling vents and air filters
• Pressure relief valves
• Safety relevant labelling
5.3 Measuring Protective Conductor Resistance
The measurement of protective conductor resistance is of course not possible for devices
which are not equipped with a protective conductor (e.g. safety class II and I II devices).
➭ Connect the device under test as described in chapter 4.4, page 11.
➭ Set the measuring range selector switch to the “20
➭ Read the measured value in “
W” from the LCD.
W” position.
➭ Move the cable from the DUT during the measurement, section by section over its entire
length, in order to locate interruptions.
Protective conductor resistance may not exceed the following values:
Maximum Allowable Protective Conductor Resistance Values Depending upon Cable Length
Length to [m] 5 12. 5 20 27.5 35 42.5 50 more than 50
Max. resistance [
Under no circumstances may a value of 1
W] 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
W be exceeded. The table is also valid for cable
reels and extension cables.
Attention!
!
The alligator clip (3) must make good contact with the housing of the device under
test!
The connector cable must be moved during measurement, section by section over
its entire length – for permanently installed devices only in so far as the cable is accessible during repair, modification or testing. If the resistance value fluctuates during
this manual test which is essential for continuity testing, it must be assumed that the
protective conductor is damaged, or that one of its connection points is defective.
Defects of this type must be corrected before any further tests are performed.
GOSSEN-METRAWATT 15
5.4 Measuring Insulation Resistance
This measurement may only be performed if the device under test has successfully completed protective conductor resistance testing. This measurement may not be performed if all-pole electrically actuated
switches are included in the device under test.
➭ Connect the device under test as described in chapter 4.4, page 11.
Make sure that the jack (10) is connected to exposed conductive parts at the DUT for safety
class II and III devices.
➭ Set the measuring range selector switch (5) to the “2 M
only) or the “20 M
W” range.
W” range (METRATESTER
â
4
➭ Activate all functions of the DUT, and be certain, for example, that contacts for tempera-
ture sensitive switches and the like are also closed.
➭ Read the measured value in “M
W” from the LCD (11).
Insulation resistance may not fall short of the following values:
The following limit values for insulation resistance may not be fallen short of:
Device Type Limit Value Minimum Display Value
Safety class I devices 1 M
Safety class II devices
with heating elements
Safety class II devices 2.0 M
Safety class III devices
and battery powered devices
W 1.105 MW (2 MW range), 1.15 MW (20 MW range)
0.3 M
W 0.335 MW (2 MW range), 0.38 MW (20 MW range)
W 2.25 MW
1000 W/V or 250 kW
5.5 Measuring Equivalent Leakage Current According to DIN VDE 0701:2000, it is absolutely essential to measure protective conductor
current after insulation resistance measurement has been performed. We recommend the
use of an equivalent leakage current measurement.
➭ Connection is the same as shown for the measurement of insulation resistance (see
chapter 5.4, page 16).
➭ Set the measuring range selector switch to the “20 mA” position.
➭ Switch all DUT functions on and make sure, for example, that all contacts for tempera-
ture sensitive switches and the like are closed.
➭ Read the measured value in “mA” from the LCD.
According to DIN VDE 0701:2000, the displayed value for current between components
to which voltage is applied during operation and exposed metal parts may not exceed
3.5 mA, or 1 mA/kW for devices with heating power of greater than 3.5 kW.
16 GOSSEN-METRAWATT
5.6 Measuring Contact Current
Contact current measurement can be performed instead of insulation resistance measurement for class II devices, or for class I devices with exposed conductive parts which are not
connected to the protective conductor.
➭ Connect the device under test to the mains outlet.
Attention!
!
The protective conductor test must first be performed and passed.
➭ Connect the cable with the test probe to the “2 mA” jack.
➭ Start up the device under test.
➭ Contact all exposed metal parts at the device under test with the test probe.
➭ Read the residual current value in mA from the display. This value may not exceed
0.5 mA.
Measurements must be performed with the mains plug poled in both directions. The larger of
the two measured values applies.
Note!
+
If no device under test is connected, random characters appear at the digital display
which may not be construed as measured values.
5.7 Measuring Residual Current (METRATESTER
Residual current (differential current) is measured between phase conductor L and neutral
conductor N at the device under test. This measurement may not be performed until the
protective conductor test has been passed (see chapter 5.3, page 15).
➭ Connect the device under test to the mains outlet.
➭ Set the measuring range selector switch to the I
➭ Start up the device under test.
➭ Read the residual current value in mA from the display. According to
DIN VDE 0701:2000, the displayed current value may not exceed 3.5 mA, or 1 mA/kW
for devices with heating power equal to or greater than 3.5 kW.
Measurements must be performed with the mains plug poled in both directions. The larger of
the two measured values applies.
Note!
+
If no device under test is connected, random characters appear at the digital display
which may not be construed as measured values.
Note!
+
If the METRATESTERâ5/5-F is integrated into a 3-phase ammeter, residual current is
measured as the sum of instantaneous current in conductors L1, L2, L3 and N.
â
5/5-F only)
position.
Diff
GOSSEN-METRAWATT 17
6 Testing Devices per DIN VDE 0702:1995
6.1 General
The following periodic tests are required according to DIN VDE 0702:
• Protective conductor resistance measurement
• Insulation resistance measurement
• Equivalent leakage current
• Contact current measurement
• Residual current measurement (with METRATESTER
Note!
+
If any doubts exist concerning the performance of an insulation resistance
measurement, a differential current measurement can be performed in its place.
For example, this may be the case with electronic devices and data processing
equipment, or safety class I devices if it is assured that all components which are
charged with line voltage are covered by this measurement.
This measurement may only be performed after the protective conductor at the DUT
has been tested.
The device under test must be plugged into the mains outlet at the
METRATESTERâ5/5-F test instrument for measurement of residual current.
6.2 Measuring Protective Conductor Resistance
The measurement of protective conductor resistance is of course not possible for devices
which are not equipped with a protective conductor (e.g. safety class I I and III devices).
➭ Connect the device under test as described in chapter 4.4, page 11.
➭ Set the measuring range selector switch to the “20
➭ Read the measured value in “
➭ Move the cable at the DUT during the measurement, section by section over its entire
length, in order to locate interruptions.
Protective conductor resistance may not exceed the following values:
W” from the LCD.
â
5/5-F only)
W” position.
Maximum Allowable Protective Conductor Resistance Values Depending upon Cable Length
Length to [m] 5 12. 5 20 27.5 35 42.5 50 more than 50
Max. resistance [
The table is also valid for cable reels and extension cables. The following applies to longer
cable lengths: additional 0.1
independent of conductor cross-section.
!
18 GOSSEN-METRAWATT
W] 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
W per additional 7.50 m cable length, no maximum length limit,
Attention!
The alligator clip (3) must make good contact with the housing of the device under
test!
The connector cable must be moved during measurement, section by section over
its entire length – for permanently installed devices only in so far as the cable is accessible during repair, modification or testing. If the resistance value fluctuates during
this manual test which is essential for continuity testing, it must be assumed that the
protective conductor is damaged, or that one of its connection points is defective.
Defects of this type must be corrected before any further tests are performed.
6.3 Measuring Insulation Resistance
This measurement may only be performed if the device under test has successfully completed protective conductor resistance testing. This measurement may not be performed if all-pole electrically
actuated switches are included in the device under test.
➭ Connect the device under test as described in chapter 4.4, page 11.
Make sure that the jack (10) is connected to exposed conductive parts at the DUT for safety
class II and III devices.
➭ Set the measuring range selector switch (5) to the “2 M
only), or the “20 M
W” range.
W” range (METRATESTER
â
4
➭ Switch all DUT functions on and make sure, for example, that all contacts for tempera-
ture sensitive switches and the like are closed.
➭ Read the measured value in “M
W” from the LCD (11).
Insulation resistance may not fall short of the following values:
The following limit values for insulation resistance may not be fallen short of:
Device Type Limit Value Minimum Display Value
Safety class I devices 0.5 M
Safety class I devices
with heating elements
Safety class II devices 2.0 M
Safety class III devices
or battery powered devices
1)
Equivalent leakage current measurement must be performed if the applicable limit value is fallen short of.
Attention!
!
W (2 MW range) 0.555 MW (2 MW range), 0.60 MW (20 MW range)
1)
0.5 M
W
W (20 MW range) 2.25 MW
1000 W/V or 250 kW
0.555 MW (2 MW range), 0.60 MW (20 MW range)
If a value of 0.5 MW is fallen short of for safety class I devices with heating elements,
equivalent leakage current measurement must be performed and passed in accordance with chapter 6.4, page 20.
Each exposed conductive part must be contacted with the test probe connected to
the jack (10), and insulation resistance must be measured for safety class II and III
devices, and battery powered devices.
No insulation resistance measurement is required for safety class III devices, or for
battery powered devices which fulfill both of the following conditions:
– Nominal power
– Nominal voltage
£ 20 VA
£ 42 V.
Batteries must be disconnected during the performance of measurements at battery
powered devices.
GOSSEN-METRAWATT 19
6.4 Measuring Equivalent Leakage Current According to DIN VDE 0702:1995, equivalent leakage current must be measured for safety class I
devices:
– for which interference suppression capacitors have been installed or replaced during the
coarse of repair or modification.
– which are equipped with heating elements and for which an insulation resistance of less
than 0.5 M
➭ Connection of the DUT is the same as for insulation resistance measurement (see chap-
ter 5.4, page 16).
➭ Set the measuring range selector switch to the “20 mA” position.
➭ Switch all DUT functions on and make sure, for example, that all contacts for tempera-
ture sensitive switches and the like are closed.
➭ Read the measured value in “mA” from the LCD.
According to DIN VDE 0702, the displayed value for current between components to
which voltage is applied during operation and exposed metal parts may not exceed
7 mA, or 15 mA for devices with heating power of greater than or equal to 6 kW.
6.5 Measuring Contact Current
Contact current measurement can be performed instead of insulation resistance measurement for class II devices, or for class I devices with exposed conductive parts which are not
connected to the protective conductor.
➭ Connect the device under test to the mains outlet.
!
➭ Connect the cable with the test probe to the “2 mA” jack.
➭ Start up the device under test.
➭ Contact all exposed metal parts at the device under test with the test probe.
➭ Read the residual current value in mA from the display. This value may not exceed
0.5 mA.
Measurements must be performed with the mains plug poled in both directions. The larger of
the two measured values applies.
+
W has been measured (chapter 6.3, page 19).
Attention!
The protective conductor test must first be performed and passed.
Note!
If no device under test is connected, random characters appear at the digital display
which may not be construed as measured values.
â
6.6 Measuring Residual Current (METRATESTER
Residual current (differential current) is measured between phase conductor L and neutral
conductor N at the device under test. This measurement may not be performed until the protective conductor test has been passed (see chapter 5.3, page 15).
➭ Connect the device under test to the mains outlet.
➭ Set the measuring range selector switch to the I
➭ Start up the device under test.
➭ Read the residual current value in mA from the display. According to
DIN VDE 0701:2000, the displayed current value may not exceed 3.5 mA.
Measurements must be performed with the mains plug poled in both directions. The larger of
the two measured values applies.
20 GOSSEN-METRAWATT
5/5-F only)
Diff
position.
7 Testing Data Processing Systems and Office Machines per DIN VDE 0701, Part 240
7.1 General
The following safety relevant tests are required for data processing systems by this regulation:
• Visual inspection
• Protective conductor test
• Testing for the absence of voltage at user accessible, exposed conductive parts
7.2 Visual Inspection
Visual inspection is performed as described in chapter 5.2, page 15.
7.3 Protective Conductor Test
Resistance is measured between the earthing contact at the mains plug and all exposed
conductive parts which might become charged with voltage in the event of an error for
individual devices with a mains plug.
➭ Connect the device under test (individual device) to the mains outlet.
To housing for measurement of protective conductor resistance
To test socket
➭ Set the measuring range selector switch to the “20
➭ Read the measured value in “
W” from the LCD.
Protective conductor resistance may not exceed 0.3
may not exceed 1
W for permanently installed data processing systems.
W” position.
W. Protective conductor resistance
➭ Move the cable at the DUT during the measurement, section by section over its entire
length, in order to locate interruptions. If the resistance value fluctuates during this manual test, it must be assumed that the protective conductor is damaged, or that one of its
connection points is defective.
GOSSEN-METRAWATT 21
A resistance value of up to 1 W measured between a suitable earthing contact and all
exposed conductive parts which might become charged with voltage in the event of an error
is allowable for permanently installed devices.
To housing for measurement of protective conductor resistance
In the case of data processing systems or combinations of permanently installed individual
devices, the network should be decoupled and individual measurements should be performed. If decoupling is not feasible, individual measurements at interconnected devices may
not demonstrate differences of greater than 0.2
W from device to device. If this differential
value is exceeded, separate, individual measurements are then required for each device
within the network.
22 GOSSEN-METRAWATT
7.4 Testing for the Absence of Voltage at User Accessible, Exposed Conductive Parts
According to DIN VDE 0701, part 240, all exposed conductive parts must be tested for the
absence of voltage after maintenance, repair or modification of data processing equipment
and office machines.
This applies to:
• Safety class I devices for user accessible, exposed conductive parts which are not
connected to the protective conductor
• Safety class II devices (totally insulated appliances) for all user accessible, exposed
conductive parts
with the mains plug poled in both directions.
➭ Connect the test instrument to a separate mains outlet parallel to the device under test.
The mains outlets to which the test instrument and the DUT are connected must be connected to the same protective conductor system. The device under test must be operated at the mains for the entire duration of the measurement.
The device under test can also be connected to the mains outlet at the test instrument
(7).
To e xpo se d
conductive parts
To mains
DUT must be in operation!
outlet
Test c able, e. g. KS13
2mA~
Attention!
!
The data processing system or office machine must be disconnected from supply
power in order to perform testing for the absence of voltage with the mains plug
poled in both directions. However, the mains plug may only be pulled with approval
from the responsible party!
A defect in the device under test may cause tripping of the residual current circuit
breaker during testing, which would also result in interruption of supply power.
Data must be backed up before measurements are performed at data processing equipment!
The manufacturer of the test instrument assumes no liability for loss of data or other
damages which result from use of the test instrument.
➭ Switch all DUT functions on.
➭ Set the measuring range selector switch to the “2 mA~” position.
➭ Connect a measurement cable with test probe to the jack/terminal (6) and contact all
exposed conductive parts at the device under test, or all exposed conductive parts
which are not connected to the protective conductor for safety class I devices.
➭ Read each measured value in “mA” from the LCD.
According to DIN VDE 0701, part 240, these measured values may not exceed 0.25 mA.
GOSSEN-METRAWATT 23
8 Measuring Load Current from the Mains Outlet
To the mains outlet
16A~
Attention!
!
The device under test may not be connected to the mains outlet (7) until is has
passed safety testing in accordance with DIN VDE 0701, part 1!
➭ Connect the earthing contact plug from the device under test to the mains outlet (7).
➭ Set the measuring range selector switch (5) to the “16 A~” position.
➭ Switch the device under test on.
➭ Read the measured value in “A” from the LCD (11).
Attention!
!
Maximum allowable load capacity is 16 A continuous and 20 A for up to 10 minutes.
The electrical system to which the test instrument is connected must be protected
against overload with a fuse or circuit breaker. The fuse or circuit breaker rating may
not exceed 16 A!
24 GOSSEN-METRAWATT
9 METRATESTERâ5 Infrared Interface
“IRDA” Message
Type infrared interface
Format 9600 baud, 1 start bit, 8 data bits, 1 stop bit,
Content device ID, measured value, measuring range,
Transmission Speed 2.5 times per second, corresponds to measuring speed
Message
(in compliance with IRDA per HP Design Guide)
no parity, no xon/xoff, no handshake
alarm messages: error per SK I and SK II
Alarm Messages:
30h = error-free
31h = protection class I error *
32h = protection class II error *
Carriage Return=0Dh
Line Feed=0Ah
Mtr51234SDCCcrL
F
ASCII characters
Device Name
ASCII characters
Meas. Value (amount)
overflow=9999
* For the differentiation of errors which cannot be assigned to various protection classes,
31h is the more severe error!
GOSSEN-METRAWATT 25
Measuring Range
Switch code:
0011 0001B=250 V
0011 0010B=16 A
0011 0011B=empty
0011 0100B=I-diff
0011 0101B=2 mA
0011 0110B=empty
0011 0111B=I-EA
0011 1000B=20 M
0011 0000B=20 W
Check Sum
via “Irda error” [and],
0000 1111B plus 30 hex
Check Sum
via “Irda error“ [and],
W
1111 0000B plus 30 hex
10 METRATESTERâ5-F Radio Interface
10.1 Applications
The radio interface at the METRATESTER
â
5-F test instrument allows for the wireless transmission of measurement results to a PC.
The test instrument’s transmitter sends measurement data to a receiver which has been
linked to a PC via the RS232 interface.
This provides for various advantages:
• If the test instrument is used to perform measurements in an aggressive environment,
the PC and a printer can be operated at a more appropriate location.
• On-site storage of measurement results to memory
• Documentation of test results at the customer’s facility
10.2 Initial Start-Up
➭ Connect the receiver to the RS232 interface at the PC (PC must be switched off).
➭ Switch the PC on.
➭ Start the PC-doc.win program.
➭ Place the METRATESTER
â
5-F test instrument into service.
10.3 Using the Radio Interface
Single Measurements
➭ Activate the transmission key at the test instrument after the completion of each mea-
surement in order to transmit measurement results to the PC.
The test instrument acknowledges transmission of the data with an acoustic signal, i.e. after
the third transmission of a complete data frame.
Continuous Measurement
➭ Press and hold the transmission key for at least 2.5 seconds.
The test instrument acknowledges activation of the continuous measurement mode while the
key is depressed with an acoustic signal which is repeated three times, after which all measurements are continuously transmitted to the PC. The continuous measurement function
can only be deactivated by disconnecting the test instrument from mains power.
Evaluation of Measurement Results at the PC
See PC-doc.win operating instructions.
10.4 Radio Interface Characteristic Values
Frequency 433.92 MHz
Mod. Type OOK (on-off keying)
Power
Consumption < 10 mW
Range max. 30 m
(within a single room),
Top V i e w
110°
METRATESTERâ5-F-E
installed to a shielded
housing
6m
Exception:
Panel-mount version
METRATESTER
max. 6 m,
â
5-F-E:
Secure Reception Range
see drawing at right
26 GOSSEN-METRAWATT
Transmission Speed 2400 baud, each frame is transmitted 3 times
Frame Format 1 start bit, 8 data bits, 1 stop bit, no parity, no xon/xoff,
Frame Content Device ID, measured value, measuring range, measurement type
Receiver
Power Supply 9 V monobloc battery in accordance with IEC 6LR61
Supply Voltage 7
Dimensions W x H x D:
Weight 150 gr. with battery
Connector Cable approx. 15 cm long
Attention!
!
The length of the cable between the receiver and the PC may not exceed 3 meters
due to EMC considerations.
no handshake
(alkaline-manganese). Internal battery is disconnected if power is
supplied from the PC.
¼ 12 V
65 x 100 x 24 mm
RS232 Interface Connector Pin Assignments
The 9 pin Cannon connector at the
receiver is configured as follows:
Frame
1: NC
2: Data to PC
(receiver)
3: Control wire
auxiliary power
4: NC
5: Ground
6: NC
7: NC
8: NC
9: Power supply
from PC
DC ON/OFF
54321
GND
9876
7...12 V
„Carriage Return“=0Dh
TxD
„Line Feed“
UU_AXX 1234S C crL
1 Byte
2 ASCII
characters for
addressing the
receiver
UU=55H, 55H
These
characters are
not included in
the checksum.
Pause
ASCII Characters
Device Name
1. ASCII “A” byte = 41h
2. Device ID byte
high byte, ASCII:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
A, B, C, D, E, F
3. Device ID byte
low byte, ASCII:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
A, B, C, D, E, F
ASCII Characters
Measurement Value
Overflow = 9999
Measuring Range
Switch code:
0011 0001B=250 V
0011 0010B=16 A
0011 0011B=open
0011 0100B=I-Diff
0011 0101B=2 mA
0011 0110B=open
0011 0111B=I-EA
0011 1000B=20 M
0011 0000B=20 W
Checksum
ASCII for low nibble
W
=0Ah
F
GOSSEN-METRAWATT 27
11 Technical Data
Meas. Quantity Measuring Range Resolution U
NO-LOAD
R
i
I
I
K
N
PE Resistance 0 ... 19.99 W 10 mW < 20 V - — > 200 mA
Insulation
Resistance
Equivalent
Leak. Current
Confirmation of
absence of voltage
with current
measurement
(contact or leakage current)
Residual Current
(METRATESTERâ5/
5-F only)
* METRATESTERâ4 only
0 ... 1.999 M
0 ... 19.99 M
0 ... 19.99 mA
0
W *
W
1 kW
10 kW
600 V 600 V -
~ 10 mA 28 V ~ 2kW <20mA —
¼ 1.999 mA ~ 1 mA2kW
0.01 ¼ 19.99 mA ~ 10 mA
ca. 100
W
k
<10mA > 1 mA
> 1 mA
Operational Measurements
Meas. Quantity Measuring Range Resolution
Mains Voltage 207 ... 253 V ~ 1 V
Load current at mains outlet 0 ... 16.00 A ~ 10 mA
Overload Capacity
Load current at mains outlet, residual current
All other measuring quantities 250 V continuous
19 A, 5 min.
Intrinsic and Service Error
Meas. Quantity Intrinsic Error Service Error
Protective Conductor Resistance
Insulation Resistance
0 ... 1.999 M
0 ... 19.99 M
W *
W
Equivalent Leakage Current
Confirmation of absence of voltage with
current measurement (contact current)
Residual Current
(METRATESTER
â
5/5-F only) ± (4 % of rdg. + 5 D) ± (10 % of rdg. + 5 D)
Mains Voltage
Load current at mains outlet
* METRATESTERâ4 only
± (2.5 % of rdg. + 2 D) ± (10 % + 5 D)
(2.5 % of rdg. + 2 D)
±
± (2.5 % of rdg. + 2 D)
± (10 % of rdg. + 5 D)
± (10 % of rdg. + 5 D)
± (2.5 % of rdg. + 2 D) ± (10 % of rdg. + 5 D)
± (2.5 % of rdg. + 2 D) ± (10 % of rdg. + 5 D)
± (2.5 % of rdg. + 2 D) ± (10 % of rdg. + 5 D)
± (2.5 % of rdg. + 2 D) ± (10 % of rdg. + 5 D)
28 GOSSEN-METRAWATT
Reference Conditions
Ambient
Te mp e r a tu r e + 2 3
Relative Humidity 50%
Mains Voltage 230 V
°C ± 2K
± 5%
± 1%
Measured Quantity
Frequency 50 Hz
± 0.2%
Measured Quantity
Waveshape sine
(deviation between effective and rectified value
± 0.5%)
Influence Variables and Errors
Influence Variable/
Sphere of Influence
Temperature
0 ... 21 °C and 25 ... 40 °C PE resistance 1
Meas. Quantity Influence Errors
± ... % of measured value
indicated influence errors per 10 K temperature change
all other measuring ranges 0.5
Frequency
49 ... 51 Hz equiv. leakage current 2 with capacitive load
45 ... 100 Hz contact current 1
METRATESTER
â
4 Display and Signalling Devices
LCD
Display Range 0 ... 1999 digits, 3½ places
Character Height 18 mm
Overflow indicated at display with character “1” at left
Excessive Temp. R
D appears at display
ISO
PE Signal Lamp
Indicates whether or not voltage is present at the mains protective conductor.
â
METRATESTER
5/5-F Display and Signalling Devices
LCD
Display Range 0 ... 1999 digits, 3½ places
Character Height 17 mm and special characters
Overflow indicated at display with “OL”
Excessive Temp. R
for long duration short-circuit:
ISO
segments “R
ISO
” and “MW” blink
PE Signal Lamp
Indicates whether or not voltage is present at the mains protective conductor.
Error Lamp
The red error lamp indicates that limit values have been exceeded during the measurement of
protective conductor or insulation resistance, equivalent leakage, contact or leakage current,
as well as residual current.
Piezoelectric Resonator
In the event that the error lamp lights up and the respectively more critical limit value is
exceeded, the piezoelectric resonator also sounds.
GOSSEN-METRAWATT 29
Power Supply
Mains Voltage 230 V/50 Hz
Throughput max. 3700 VA,
Electrical Safety
Protection Class II
Nom. Mains Voltage 230 V
Test Voltage Mains + PE (mains) + 2 mA socket for testing for the absence of
Overvoltage
Category I I
Contamination Level 2
EMC Interference
Emission EN 61326-1
EMC Interference
Immunity EN 61326/A1
Safety Cut-Off when device overheats
Ambient Conditions
Operation
Storage
Atmosph. Humidity max. 75%
Elevation to 2000 m
Mechanical Design
Protection Device IP 40, terminals IP 20
Dimensions W x H x D: 190 mm x 140 mm x 95 mm
Weight 1.3 kg
dependent upon load at mains outlet
voltage at test socket, connector jacks for phase and protective
conductors and gripper clip:
3kV
~ mains to PE (mains) + 2 mA socket: 1.5 kV~
- 10 ... + 55 °C
- 25 ... + 70 °C
12 Maintenance
No special maintenance is required. Keep outside surfaces clean and dry. Use a
slightly dampened cloth for cleaning. Avoid the use of solvents, cleansers or abrasives.
30 GOSSEN-METRAWATT
13 Repair and Replacement Parts Service
DKD Calibration Lab *
and Rental Instrument Service
If required please contact:
GOSSEN-METRAWATT GMBH
Service Center
Thomas-Mann-Strasse 20
90471 Nürnberg, Germany
Phone +49 911 86 02 - 410 / 256
Fax +49 911 86 02 - 2 53
e-mail service@gmc-instruments.com
This address is only valid in Germany.
Please contact our representatives or subsidiaries for service in other countries.
* Calibration lab for electrical measuring quantities DKD – K – 19701
Accredited measuring quanities: Direct voltage, direct current intensity, direct current resistance,
alternating voltage, alternating current intensity, alternating current active power, alternating current
apparent power, direct current power, capacity, frequency
14 Product Support
If required please contact:
GOSSEN-METRAWATT GMBH
Product Support Hotline
Phone +49 911 86 02 - 112
Fax +49 911 86 02 - 709
e-mail support@gmc-instruments.com
GOSSEN-METRAWATT 31
Printed in Germany · Subject to change without notice
GOSSEN-METRAWATT GMBH
Thomas-Mann-Str. 16-20
90471 Nürnberg, Germany
Phone: +49 911 8602-0
Fax: +49 911 8602-669
e-mail: info@gmc-instruments.com
http://www.gmc-instruments.com
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