Maintenance And Repairs; Spare Parts - ABB SPAJ 141 C User Manual And Technical Description

Maintenance
and repair

Spare parts

When the protective 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 com-
ponents subject to an abnormal physical or elec-
trical wear under normal operating conditions.
If the environmental conditions at the relay
operating site differ from those specified, as to
temperature, humidity, or if the atmosphere
around the relay contains chemically active gases
or dust, the relay ought to be visually inspected
in association with the relay secondary test or
whenever the relay modules are withdrawn from
the case. At the visual inspection the following
things should be noted:
- Signs of mechanical damage on relay modules,
contacts and relay case
- Accumulation of dust inside the relay cover
or case; remove by blowing air carefully
- Rust spots or signs of erugo on terminals, case
or inside the relay
Three-phase overcurrent and earth-fault module
Power supply and output relay module
U = 80...265 V ac/dc
aux
U = 18...80 V dc
aux
Input module
Bus connection module
On request, the relay can be given a special treat-
ment for the protection of the printed circuit
boards against stress on materials, caused by
abnormal environmental conditions.
If the relay fails in operation or if the operating
values remarkably differ from those of the relay
specifications, the relay should be given a proper
overhaul. Minor measures can be taken by per-
sonnel from the instrument work-shop of the
customer's company, e.g. replacement of auxil-
iary relay modules. All major measures involv-
ing overhaul of the electronics are to be taken
by the manufacturer. Please contact the manu-
facturer or his nearest representative for further
information about checking, overhaul and
recalibration of the relay.
Note!
Static protective relays are measuring instru-
ments and should be handled with care and pro-
tected against moisture and mechanical stress,
especially during transport.
SPCJ 4D24
SPTU 240 R1
SPTU 48 R1
SPTE 4E2
SPA-ZC 17__ or SPA-ZC 21__
13