Areva MiCOM P441, Technical Manual

Page: 486 / 636

P44x/EN CM/E33 Commissioning
Page 46/54 MiCOM P441/P442 & P444
J H G F E D C B A
Power supply
board
Power supply module
Input module
Relay board IRIG-B board Transformer board Input board Opto board Not used Not used Relay board
P0151ENa
FIGURE 23 - P442 PCB/MODULE LOCATIONS (VIEWED FROM FRONT)
The PCBs within the relay are now accessible. figure 22 and figure 23 show the PCB
locations for the distance relays in size 40TE (P441) and size 60TE (P442) cases
respectively.
The 64-way ribbon cable to the front panel also provides the electrical connections between
PCBs with the connections being via IDC connectors.
The slots inside the case to hold the PCBs securely in place each correspond to a rear
terminal block. Looking from the front of the relay these terminal blocks are labelled from
right to left.
NOTE: To ensure compatibility, always replace a faulty PCB with one of an
identical part number. table 15 lists the part numbers of each PCB
type.
PCB Part Number
Power Supply Board (24/54V dc)
(48/125V dc)
(110/250V dc)
ZN0001 001
ZN0001 002
ZN0001 003
Relay ETOpto Board ZN0002 001
Input ETOpto Board ZN0005 001
Opto Board ZN0005 002
IRIG-B Board (IRIG-B input only)
(Fibre optic port only)
(Both)
ZN0007 001
ZN0007 002
ZN0007 003
Co-processor board ZN0003 003
TABLE 15 - PCB PART NUMBERS