Westinghouse KC-4, Installation, Operation & Maintenance Instructions Manual

Page: 100 / 178

T Y P E
K C-4
IJ)
0
z
0
u
"'
IJ)
::.;
z
-
--
I
TO
95 %
F
4
--
--
-
30
I
TO
80%
OF
PICKUP
TO
0 'll.
OF
PICKUP
I
0
2 4 6 8 ' 0 1 2 1 4 1 6 18 20
MULT I P L E S
O F
TAP VAL U E C U R R E N 7
6 2 9 A 5 7 6
Fig. 6. Maximum Pick-Up and Drop-Out Time Curves for
the Phase and Ground O vercurrent Units
IMSJAHTAIIEOUS
OYI!:R CURRENT
(
UPPER CYL.UMIT
)
OPERATIOJI
IIIDI CATOR
8 6 2 A 6 1 2
Fig. 8.
Internal Schematic of the KC-4 Relay with Operation
Indicator and Contacts to separate terminals in
FT-41 case.
14
IMSUIIUNEOUS _
flYER CURRENT
(
UPPlR CVl.UMI
r)
INDICATING
COMTACTOR -- -- -
SifiTCN
l88A64o
Fig. 7. Internal Schematic of the KC-4 Relay in the FT- 4 "1
Case.
INSTANTANEOUS
OVER CURRENT
(UPPER CYL.I..NIT)
INDICATING
SWITCH
INSTANTANEOUS
OVER CURRENT
(MIDDLE
CYL. UNIT)
INSTANTANEOUS
OVER C!..mf:NT
( LOWERCYL
UNIT)
CHASSIS OPERATED
SHCfiTING SWTTCH
REO HANDLE
TEST SWITCH
CLRRENT
TEST
JACK
TERMINAL
S UB . ��
8 6 2 A9 9 7
Fig. 9.
Internal Schematic of the KC-4 Relay with Serie-s
Make Contacts in FT-4 1 Case.
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