Function Revision History; Testing Permissive Underreaching; Testing Permissive Overreaching; Testing Blocking Scheme - Hitachi RED670 Commissioning Manual

Section 11
Testing functionality by secondary injection
11.11.2.1

Function revision history

Document
revision
A
B
C
D
E
F
G
H
J
11.11.2.2

Testing permissive underreaching

1. Activate the receive (CRLx) signal in the IED.
2. Apply healthy normal load conditions to the IED for at least two seconds.
3. Apply a fault condition within the permissive zone.
4. Check that correct trip outputs, external signals, and indications are obtained for all the actual
types of fault generated.
5. Check that other zones operate according to their zone timers and that the send (CSLx) signal
is obtained only for the zone and phase configured to generate the actual signal.
6. Deactivate the receive (CRLx) signal in the IED.
7. Check that the trip time complies with the zone timers and that correct trip outputs, external
signals, and indications are obtained for the actual type of fault generated.
11.11.2.3

Testing permissive overreaching

1. Activate the receive (CRLx) signal in the IED.
2. Apply healthy normal load conditions to the IED for at least two seconds.
3. Apply a fault condition within the permissive zone.
4. Check that correct trip outputs, external signals, and indication are obtained for the all actual
types of fault generated.
5. Check that the other zones operate according to their zone timer and that the send (CSLx)
signal is obtained only for the zones and phases that are configured to give the actual signal.
Also the zone connected to CSLx underreach is giving CSLx in this mode.
6. Deactivate the IED receive (CRLx) signal.
7. Apply healthy normal load conditions to the IED for at least two seconds.
8. Apply a fault condition within the permissive zone.
9. Check that trip time complies with the zone timers and that correct trip outputs, external
signals, and indications are obtained for the actual type of fault generated.
11.11.2.4

Testing blocking scheme

220
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 Added separate DOs for teleprotection permissive (TxPrm & RxPrm1), blocking (TxBlk &
RxBlk1) and direct trip (TxTr & RxTr1) transmit and receive signals in accordance with
61850 Ed 2.0.
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Commissioning manual