SERVICE MANUAL R5888C
QUADRAMHO Chapter8
Page 2 of 5
1.3 PM003
If module 4 is: RCL 10 001 030
RCL 10 001 031
RCL 10 001 032
The relay is fitted with a special scheme initially developed for TVA/BC Hydro,
North America. this scheme contains three three-phase schemes only:
01 Basic
05 POR
07 Block
Due to the nature of the application, 2 of the opto-isolators and the fault locator
contacts have been assigned different functions.
Opto-isolators
A1-A2 Block operation of POR scheme and inhibit signal send
(block scheme)
A3-A4 Breaker open
A5-A6 Block Z2T and Z3T earth fault time delayed trips
A7-A8 Channel in service
A9-A10 Signal receive
Modified contacts:
C1-C2 Any Zone 1 fault
C3-C4 Any Zone phase-phase fault
C5-C6 Any Zone 2 earth fault
C7-C8 Any Zone 3 phase-phase fault
Modifications to schemes
Basic scheme:
Standard basic scheme with the addition that the signal send contact will close
for a reverse Zone 3 fault.
POR scheme:
Standard POR scheme, however, if opto-isolator A1-A3 is energised, carrier
send and accelerated trips are inhibited.
Block schemes:
Standard block scheme, however, if opto-isolator A1-A2 is energised, carrier
send is inhibited.
Case connection diagram:
Three phase tripping S10 SHPM101 sheet 901
To Next Page
Loading...