Hitachi Relion 670 Series Commissioning Manual page 130

Section 11
Testing functionality by secondary injection
11.4.10.1 Function revision history
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11.4.10.2 Testing the carrier send and trip signals
Procedure
1. Set the operation of all distance zones, which are supposed to be blocked by the operation of
ZMRPSB (78), to Disabled.
2. Configure the PUPSD functional inputs to the TRIP output of the underreaching power-swing zone,
if the underreaching communication scheme is used.
3. Start instantaneously any kind of fault within the underreaching power-swing zone and check, that:
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4. Simulate the receiving of the carrier signal so that the functional input signal CR becomes a logical
one.
5. Configure the PUPSD input to connect to the output PICKUP of the carrier accelerating zone
(Power-swing overreaching zone).
6. Initiate any kind of fault within the carrier accelerating zone and check that the TRIP signal appears
after the time, which is equal to the time delay set on the trip timer tTrip.
Also consider the (average) trip time of the carrier acceleration zone (approximately 30ms).
11.4.10.3 Testing the influence of the residual overcurrent protection
Additionally connect the IED according to the test instructions for the four step residual overcurrent
protection function EF4PTOC (51N/67N), if the Power swing logic (PSLPSCH) is configured in a way that
is controlled by this protection.
Procedure
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Product History
revision
2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.4 -
2.2.5 Deleted DO Rx
2.2.6 -
2.2.6 -
The CS signal appears after the time delay, which is equal to the sum of set time delays for
the underreaching zone tnPP or tnPG (dependent on the type of fault) and for the carrier
send security timer tCS. Also add the usual trip time for the underreaching zone
(approximately 30ms).
The TRIP signal appears after the time delay, which is equal to the sum of set time delays for
the underreaching zone tnPP or tnPG (dependent on the type of fault) and for the trip security
timer tTrip. Also add the usual operate time for the underreaching zone (approximately
30ms).
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1MRK506371-UUS Rev. M
GUID-DFB27CD5-5AC0-4D8B-B306-F74173F71E4E v2
M14946-8 v3
M14946-28 v5
Line distance protection REL670
Commissioning manual