ABB SPAC 315 C User Manual And Technical Description page 24

Exchange and
spare parts
Maintenance
and repairs
24
Control module
Combined overcurrent and earth-fault relay module
I/O module, input voltage range 80...265 V dc
I/O module, input voltage range 30...80 V dc
Power supply module, 80...265 V ac or dc
Power supply module, 18...80 V dc
Housing without plug in modules,
feeder terminal SPAC 315 C
feeder terminal SPAC 317 C
When the protection relay is operating under
the conditions specified in the section "Techni-
cal data", the relay is practically maintenance-
free. The relay modules include no parts or
components subject to an abnormal physical or
electrical ware under normal operation condi-
tions.
If the environmental conditions at the relay
operation site differ from those specified, as to
temperature and humidity, or, if the atmos-
phere around the relay contains chemically ac-
tive gases or dust, the relay should be visually
inspected in association with the relay second-
ary test being performed. At the visual inspec-
tion the following things should be noted:
- Check for signs of mechanical damage on
relay case or terminals
- Check for dust inside the relay case or the
cover of the relay case; remove by blowing
pressurized air carefully
- Check for rust spots or signs of erugo on
terminals, relay case or inside the relay.
SPTO 1D6
SPCJ 4D29
SPTR 2B17
SPTR 2B18
SPGU 240A1
SPGU 48B2
SPTK 4F6
SPTK 4F9
If the relay fails in operation or if the operation
values differ too much from those of the relay
specifications the relay should be given a proper
overhaul. Minor measures can be taken by per-
sonnel from the operator's instrument work-
shop but all major measures involving overhaul
of the electronics are to be taken by the
manufactrer. Please, contact the manufacturer
or his nearest representative for further informa-
tion about checking, overhaul and recalibration
of the relay.
Note!
Static protection devices are measuring instru-
ments which should be handled with care and
protected against moisture and mechanical stress,
especially during transport.