P54x/EN CM/La4 Commissioning
(CM) 10-46
MiCOM P543, P544, P545 & P546
CM
8.4.4.1 Scheme trip test for zone 1 extension only
The Reset Zone 1 Extension opto input should first be ON (energized). This should be
performed by applying a continuous DC voltage onto the required opto input, either from the
test set, station battery, or relay field voltage (commissioning engineer to ascertain the best
method).
With the opto energized, inject an end of line
fault. The duration of injection should be set to
100 ms. No trip should occur.
De-energize the Reset Z1X opto (remove the temporary energization link, to turn it OFF).
Repeat the test injection, and record the operating time. This should typically be less than
20 ms for 50 Hz, and less than 16.7 ms for 60 Hz when set for instantaneous operation.
Switch OFF the ac supply and reset the alarms.
Where a non-zero tZ1 Ph time delay is set in the DISTANCE menu column, the expected
operating time is typically within +/- 5% of the tZ1 setting plus the “instantaneous” delay
quoted above.
8.4.4.2 Scheme trip tests for permissive schemes (PUR/POR only)
This te
st applies to both Permissive Underreach, and Permissive Overreach aided scheme
applications.
As in the table, for a Permissive scheme the Signal Receive opto input will need to be ON
(energized). This should be performed by applying a continuous DC voltage onto the
required opto input, either from the test set, station battery, or relay field voltage
(commissioning engineer to ascertain the best method).
With the opto energized, inject an end of line
fault, and record the operating time. The
measured operating time should typically be less than 20 ms for 50 Hz, and less than
16.7ms for 60 Hz when set for instantaneous operation. Switch OFF the ac supply and reset
the alarms.
Where a non-zero Distance Dly time delay is set in the DISTANCE menu column, the
expected operating time is typically within +/- 5% of the tZ1 setting plus the
“instantaneous” delay quoted above.
De-energize the channel received opto (remove the temporary energization link, to turn it
OFF).
8.4.4.3 Scheme trip tests for blocking scheme only
The Signal Receive o
pto input should first be ON (energized). This should be performed by
applying a continuous DC voltage onto the required opto input, either from the test set,
station battery, or relay field voltage (commissioning engineer to ascertain the best method).
With the opto energized, inject an end of line
fault. The duration of injection should be set to
100 ms. No trip should occur.
De-energize the channel received opto (remove the temporary energization link, to turn it
OFF).
Repeat the test injection, and record the operating time. Switch OFF the ac supply and reset
the alarms.
For blocking schemes, a non-zero Distance Dly time delay is set, so the expected
operating time is typically within +/- 5% of the delay setting plus the P54x “instantaneous”
operating delay. The trip time should thus be less than 20 ms for 50 Hz, and less than
16.7 ms for 60 Hz, plus 1.05 x Delay setting.
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