Testing Meter Start-Up With Earthing Contact Adapter - Gossen MetraWatt PROFITEST MBASE MTECH Operating Instructions Manual

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
EXTRA
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).
Note
If a minimum power is not reached, the test will not be
started or will be aborted.
GMC-I Messtechnik GmbH
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
Note
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).
37