GMC-I Messtechnik GmbH 37
13 Testing Meter Start-Up with Earthing Contact Adapter
Start-up of energy consumption meters which are connected
between L and N can be tested with this function.
Select the Measuring Function
Switching Back and forth Between Standing Surface Insulation
Impedance and Meter Start-Up
The submenu for switching back and
forth between standing surface insula-
tion impedance and meter start-up
testing can be accessed by pressing
the softkeys shown at the left.
Connection L – N
Earthing contact plug
Meters are tested with the help of an internal load resistor. After
pressing the start key, the meter can be tested for proper start-up
within a period of 5 seconds. The “RUN” pictograph is displayed.
All 3 phases must be tested against N, one after the other.
Momentary test power is displayed during and after testing. The
instrument is now ready for further testing (“READY” pictograph).
If a minimum power is not reached, the test will not be
started or will be aborted.
Special Case
Start-up of energy consumption meters which are connected
between L and L, or L and N, can be tested with this function.
Connection L – L
2-pole adapter
If an earthing contact outlet is not available, you can use
the 2-pole adapter. N must be contacted with the PE test
probe (L2), and then measurement must be started.
If PE is contacted with the PE test probe (L2) during the
meter start-up test, approximately 250 mA flow through
the protective conductor and an upstream RCD, if avail-
able, is tripped.
Meters are tested with the help of an internal load resistor. After
pressing the start key, the meter can be tested for proper start-up
within a period of 5 seconds. All 3 phases (phase conductor)
must be tested against N, one after the other.
In system types without N, all 3 phases must be tested against
each other.
Momentary test power is displayed during and after testing. The
instrument is now ready for further testing (“READY” pictograph).
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