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Jf
AC CIEI'IEitATOR OR �OTOII
l . , l .
.
T
87-J
TO
ALAIIM
TC
�2&1
52aK
NE!i.
Fig. 13. Extemal
schematic
generator relay in the type FT21 Case fo r phase
and ground protection of the A C generators
motors.
8
DEVICE MUMDER CltART
87
-!JEHERATOR PERCENTAGE DIFFERENTIAL.
"
RELAY, TYPE CA
.;�:
:!:!::::�·�,����:�,::·�::.��,
:
86
-AUXILIARY TIIIPPIIhl RELAY. TYP£ WL
52
POWER CIRCUIT Bllf.U:ER
•
BREAKER AUXILIARY CONUCT
a •
TC - BREAKER TRIP COIL
ICS - IIIDICATIMG CONTACTOII SWITCH
diagram
of
the
type C A
a n d
5.
Indicating Contactor Switch (ICS)
Close the main relay contacts and pass sufficient
d-e current through the trip circuit to close the con
tacts of the ICS. This value of current should be not
greater than the particular ICS tap setting being used.
The
operation indicator target should drop freelY.
The
contact gap should be approximatelY .047"
between the bridging moving contact and the adjust
able stationary contacts. The bridging moving con
tact should touch both stationary contacts simulta
neously.
RENEWA L PA RTS
Repair work can be done most satisfactorily at the
factory. However, interchangeable parts can be fur
nished to the customers who are equipped for doing
repair work. When
ordering parts, always give the
complete nameplate data
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