Gossen Metrawatt METRATESTER 5 3P User guide
Operating Instructions
METRATESTER 5+3P
Workshop Test Panel for Testing Devices
per DIN VDE 0701-0702 and DIN VDE 0104
3-349-414-03
7/5.13
1 NETZ-VDE switch (mains-VDE)
2 Measuring selector switch: L1-L2-L3
3 Connector socket/terminal for DUT
phase conductor (parallel to test sockets)
4 Connector socket/terminal for DUT pro-
tective conductor (parallel to test sockets)
5 Connector socket/terminal for
conductive parts of the DUT for testing
for the absence of voltage in accordance
with DIN VDE 0701–0702, and for
contact current measurement for
protection class II devices
6 Measuring function selector switch for
METRATESTER 5+
7 Contact surface for finger contact
8 Plug connector for mains cables
9 Mains / emergency stop switch,
12 RCD (residual current circuit beaker)
4*25 A, 0.03 A
13 Three circuit breakers, B16 A
14 Polarity reversing switch
15 CEE socket, 3P+N+PE, 32 A, 230/400 V
max. 16 A !
16 Fuse, T 0.1/250G
17 CEE socket, 3P+N+PE, 16 A, 230/400 V
18 Earthing contact outlet
19 Mains indicator lamps, L1-L2-L3
20 Test sockets, L1-L2-L3-N-PE
21 Probe cable with clip / test probe
22 Mains cable with earthing contact plug
and coupling socket
23 Mains cable with CEE 16 A, 5-pole
mains plug and coupling socket
undervoltage trigger can be locked at
zero setting
10 “Durchgang” (continuity) indicator lamp
11 Connector sockets for continuity test
with max. 33 V AC
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Table of Contents Page
1 Applications ....................................................................................................................4
2 Safety Precautions .........................................................................................................4
3 Standard Equipment and Accessories ............................................................................6
4
Connecting the Test Case to the Mains and Testing the Mains Connection ..........................6
4.1 Connecting the Test Case ................................................................................................................. 6
4.2 Testing Protective Conductor Potential ............................................................................................... 6
4.3 Measuring Line Voltage .................................................................................................................... 7
5 Connecting the DUT to the Test Case ............................................................................. 8
5.1 Protection Class I Devices ................................................................................................................. 8
5.2 Protection Class II and III Devices ...................................................................................................... 9
5.3 Devices with Single or Multi-Phase Connection without Plug ............................................................... 9
5.4 Stationary Devices for Protective Conductor Testing via the Supply Mains .......................................... 10
5.5 Data Processing Equipment ............................................................................................................ 10
5.6 Extension Cables with the VL2 E Accessory ..................................................................................... 11
5.7 Setting the Switches at the Test Case .............................................................................................. 11
5.8 Setting the Switches at the Device Under Test ................................................................................. 11
6 Testing Devices in Accordance with DIN VDE 0701-0702 ............................................12
6.1 Measuring Protective Conductor Resistance for Protection Class I Devices ......................................... 12
6.2 Measuring Insulation Resistance ..................................................................................................... 13
6.3 Measuring Protective Conductor Resistance ..................................................................................... 15
6.3.1 Equivalent Leakage Current ............................................................................................................ 15
6.3.2 Differential Current Measurement for Protection Class I Devices ........................................................ 16
6.4 Measuring Contact Current ............................................................................................................. 17
6.4.1 Contact Current Measurement – Differential Current ........................................................................17
6.4.2 Testing in Accordance with the Direct Method ................................................................................. 17
6.5 Measuring Load Current and Voltage at the Consumer ..................................................................... 18
7 Testing Extension Cables with the VL2 E Accessory ....................................................19
7.1 DIN VDE Tests for Extension Cables ................................................................................................. 19
7.2 Function Test for Extension Cables .................................................................................................. 19
8 Continuity Test with Extra-Low Voltage ........................................................................ 20
9 Display and Indicators at the Test Instruments ............................................................20
9.1 Indication of Errors and Limit Values ................................................................................................ 20
10 Technical Data ..............................................................................................................21
10.1 Test case ...................................................................................................................................... 21
10.2 METRATESTER 5 + Test Instrument ................................................................................................. 22
11 Maintenance – Recalibration ........................................................................................ 25
11.1 Housing Maintenance ..................................................................................................................... 25
11.2 Recalibration .................................................................................................................................. 25
11.3 Periodic Self-Test of the Connector Cable for Protective Conductor Continuity .................................... 26
11.4 Testing the Integrated RCD (residual current circuit breaker) ............................................................. 26
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11.5 Fuse Replacement .......................................................................................................................... 26
11.6 Return and Environmentally Sound Disposal ..................................................................................... 26
12 Repair and Replacement Parts Service
Calibration Center * and Rental Instrument Service .....................................................27
13 Product Support ............................................................................................................28
1 Applications
The portable test case, manufactured in accordance with “guidelines for equipment required
for electrical installation operations”, is intended for use by qualified electricians for
measuring and testing electrical devices after repair or modifications, as well as for periodic
testing, in accordance with DIN VDE 0701-0702.
According to these regulations, protective conductor resistance, insulation resistance,
differential current, contact current and equivalent leakage current must be measured, and
testing for the absence of voltage must be executed at user accessible conductive parts at
data processing equipment and office machines.
Further applications for the substantiation of correct functioning of electrical equipment
include the measurement of operating voltage and current consumption at devices under
test. Beyond this, the protective conductor at the mains connection can be tested for the
absence of voltage and line voltage can be measured. Extension cables can be tested after
connecting the VL2 E accessory.
2 Safety Precautions
The test case is equipped with a METRATESTER 5+ test instrument, and has been
manufactured and tested in accordance with the following regulations:
IEC 61010-1,
DIN EN 61010-1,
VDE 0411-1 “Regulations for electronic testers and controllers,
Part 1: safety measures for electronic measuring instruments”
and DIN VDE 0404 “Devices for technical safety testing of electrical equipment, part 1:
General requirements,
and part 2: Devices for periodic testing”
If used for its intended purpose, safety of the test case and of the user is assured. Their
safety is however not guaranteed, if the test case is used improperly or handled carelessly.
In order to maintain flawless technical safety conditions, and to assure safe use, it is
imperative that you read these operating instructions thoroughly and carefully before placing
the test case into service, and that you follow all instructions contained herein.
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Observe the following safety precautions:
Attention!
!
• Measurements within electrical systems are prohibited!
• The test case may only be connected to 230/400 V mains system with 50 Hz and a 16 A
fuse via the 5-pole (23) or 3-pole (22) mains cable.
• In order to avoid undesired shutdown in the event of a defective device under test, the
mains outlets should be separately fused if at all possible!
A defect in the DUT may trip the mains power RCD (residual current circuit breaker), and
thus cause a service interruption. If DUTs are being tested which cannot be
disconnected from the mains intermittently, an RCD (residual current circuit breaker) can
also trip the power supply circuit (test per section 6.4.1).
The manufacturer of the test case assumes no liability for loss of data or other damage
which results from its use.
• Be prepared for the occurrence of unexpected voltages at devices under test. For
example, capacitors may be dangerously charged.
• If the test case is connected via the earthing contact mains adapter, phase conductor L1
may be connected to the N safety socket if poled accordingly! If this is the case, reverse
polarity of the plug at the mains adapter (see section 4.1).
• Before connecting the device under test to the test case, subject it to a thorough visual
inspection first. Devices under test with visibly damaged insulation must be repaired
before metrological testing is performed.
• If the test case and/or its connector cables demonstrate visible damage, no longer
function, have been stored for a lengthy period of time under unfavorable conditions or
have been subjected to excessive stress during transport, it must be assumed that
hazard-free operation is no longer possible. If this is the case, remove the test case from
service and secure it against inadvertent use, for example by locking it up.
The NETZ-VDE switch (2) may only be set to the “NETZ” (mains) position after devices
under test with a protective conductor have passed the protective conductor test.
For reasons of safety, the device under test must be turned off before switching to “Netz”
(mains), so that dangerous devices under test (e.g. a circular saw) can only be switched on
intentionally.
• Due to the fact that the test case is laid out in accordance with DIN VDE 0404, the “PE”
safety socket and the “PE” contacts in the outlet may only be connected to the mains
protective conductor after the NETZ-VDE switch has been set to the “Netz” (mains)
position.
• In order to assure compliance with technical safety requirements, the test case may only
be repaired by a qualified electrician, who is preferably employed by the manufacturer.
• Before opening the test case in order to carry out repairs, it must be disconnected from
the mains by pulling the plug from the electrical outlet.
• Disconnect the test case from the mains whenever work is interrupted and secure it
against unauthorized use, for example by locking the cover.
• Use recommended accessories only!
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Meaning of Symbols on the Instrument
!
Warning concerning a source of danger
(attention: observe documentation!)
EC label of conformity
This device may not be disposed 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.
3 Standard Equipment and Accessories
Scope of Delivery
1 test case
2 mains cables (Schuko and CEE16A)
1 measurement cable with test probe, 1 alligator clip
1 set of operating instructions
Accessories
SECU-cal 10 calibration adapter (M662A)
VL2 E test adapter for testing cables (Z745W)
4 Connecting the Test Case to the Mains and Testing the Mains Connection
4.1 Connecting the Test Case
Set the switches as follows before connecting to the mains:
Set the NETZ–VDE switch (1) to “NETZ”, set the METRATESTER 5 + measuring function
selector switch (6) to “250 V”, set the polarity reversing switch (14) to “1”, set the L1-L2-L3
measuring selector switch (2) to “L1” and then connect the test case to the mains. Set the
mains switch (9) and the RCD (residual current circuit breaker) (12) to “EIN” (on). According
to the manufacturer, the emergency stop switch may generate minor humming noises with
the U coil in certain armature positions. If this is the case, quickly turn the emergency stop
switch on and off several times.
When connected via the 5-pole CEE mains adapter (23), indicator lamps L1, L2 and L3 (19)
must light up, and when connected via the earthing contact mains adapter (22), only
indicator lamp L1 should light up. Mains polarity is tested for this type of connection, i.e. if
lamp L1 does not light up, the polarity of the earthing contact plug must be reversed in the
mains outlet.
If this is not the case, immediately disconnect the test case from the mains.
The fault at the mains connection or the test case must be eliminated before executing any
tests.
4.2 Testing Protective Conductor Potential
Touch the contact surface (7) with your finger, and touch a grounded object at the same time
(e.g. a water pipe). The PE indicator lamp may not light up! If this is the case, potential between
the protective conductor at the mains plug (22/23) and the contact surface (7) is 100 V.
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When connected via the 5-pole CEE mains plug (23), indicator lamps L1, L2 and L3 (19)
Note!
Attention!
!
Note!
must light up. When connected via the earthing contact mains adapter (22), only indicator
lamp L1 should light up. Mains polarity is tested for this type of connection, i.e. if lamp L1 does
not light up, the polarity of the earthing contact plug must be reversed in the mains outlet. If this is not
the case, immediately disconnect the test case from the mains. The fault at the mains connection
or the test case must be eliminated before executing any further tests.
If the PE signal lamp lights up when you touch the contact surface (7), potential between the
protective conductor at the mains plug (22/23) and the contact surface (7) is 25 V, i.e. the
protective conductor is conducting voltage.
Depending upon handling, potential transfer may occur which causes the PE signal
lamp to light up. For example, this could be the case if you touch a device under test
with the NETZ-VDE switch (1) in the “VDE” position, thus creating a capacitive voltage
divider.
If, while testing protective conductor potential, you determine that the mains
protective conductor is conducting voltage, no measurements may be performed
with the test case. If this is the case, potentially dangerous voltage is also present at
the user accessible earthing contacts at the outlets, the “PE” socket (20) and the jack
(4). Immediately disconnect the test case from the mains and arrange to have the
fault eliminated at the mains connection. Voltage in the mains protective conductor
also results in incorrect measured values when testing for the absence of voltage in
accordance with DIN VDE 0701-0702 (see section 6.4.1).
4.3 Measuring Line Voltage
• Set the measuring function selector switch (6) to “250 V~”.
• If connected via the 5-pole CEE mains adapter, set the measuring selector switch (2) to
the L1, L2 and L3 settings, one after the other, and if connected via the earthing contact
mains adapter set the switch to L1 and read the measured value from the LCD panel for
each switch setting.
Line voltage must always lie within the permissible range of 207 to 253 V.
If line voltage is present, values are displayed at the with the measuring function
selector switch (6) in each of its respective positions, even if no device under test has
been connected.
The display of such numbers indicates that line voltage is present, regardless of the
position to which the measuring function selector switch (6) has been set. If the
selector switch has been set to “250 V~”, these numbers represent the actual line
voltage value. In all other detented switch positions – if no device under test has been
connected – these numbers do not represent actual measured values.
If the test case has been connected via the earthing contact mains adapter, all tests and
measurements can be performed except tests at 3-phase current devices under mains
operating conditions.
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5 Connecting the DUT to the Test Case
Mains Connection Sockets
Switch the DUT on!
Either
Depending upon its plug, connect the DUT to one of the outlets, or to the connector sockets
in the case of loose wire ends.
It is absolutely mandatory to execute the tests in the order in which they are specified here!
1 Visual inspection
2 Measurement of protective conductor resistance for protection class I devices
3 Measurement of insulation characteristics if technically feasible, i.e. if the DUT does not
include any electrically actuated, all-pole switches:
– Insulation resistance followed by protective conductor or equivalent leakage current
– Otherwise: leakage current during operation, differential current, protection class I
devices
Contact current for protection class II devices
Safety extra-low voltage (only at point of connection of safety extra-low voltage
generated in the DUT)
4 Function Test
5 Labeling inspection
6 Documentation
5.1 Protection Class I Devices
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5.2 Protection Class II and III Devices
Connect the DUT, for example to the
earthing contact outlet, or to the connector sockets in the case of loose wire ends.
Switch the DUT on!
Mains Connection Sockets
To Accessible
Metal Parts
Either
Mains Connection Sockets
Switch the DUT on!
Either
5.3 Devices with Single or Multi-Phase Connection without Plug
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