Westinghouse KD, Instructions Manual

Page: 21 / 24

K-DAR
Table
I.
Summarv of Operation.
x 'MTR. S TART CSP
8
CSG COII.S
X MT R. S TOP
R R T
C O I L
+}
+
+�
BI<R. BKR.
R.
T O
R R
Iosx'MTR
�
- � SG
Z 3
-
Zp
Z3 STAYS CSP CSP
BKR. A
ENERGIZES
CLOSES CLOSES
CLOSED
CSP
CSP
&-
CSP
&
BKR . . B
z3 Zp STAYS CSG
CSG
OPENS OPEN
STAY
STAY
OPEN
OPEN
INTERNAL
PHASE
z3 STAYS
Zp
CSP CSP
BKR . A
CLOSED
ENERGIZES
CLOSES CLOSES
CSP
Zp
BKR. B
Z3 STAYS
ENERG I ZES
CSP CSP
CLOSED
CSP
CLOSES CLOSES
EXTERNAL GROUND
Do
los CSG CSG
BKR. A
OPENS
ENERGIZES
CLOSES CLOSES
CSP
CSP
&
CSP
&
los
Do
CSG CSG
BKR. B
STAYS
STAY STAY
OPENS
OPEN
OPEN OPEN
INTERNAL GROUND
loa
Do
CSG CSG
BKR. A
OPENS
ENERGIZES
CLOSES CLOSES
(NOTE
2)
CSG
Do los
CSG CSG
BKA. B
OPENS
ENERG I ZES
CLOSES
CLOSES
( NOTE
21
CSG
R R H C O I L
R
M
RC\I R,
RRH
ENERGI ZED
RRH
DE-
ENERGIZED
(NOTE I )
FAULT
RRH
DE-
ENERG I ZED
RRH
DE-
ENERGIZED
FAULT
RRH
ENERGIZED
RRH
DENER-
Gl ZED
FAULT
RRH
DE-
ENERGIZED
RRH
DE-
ENERGIZED
T R IP C I RCUIT
+
I
Iro
c
RRP
&
RRG HELD
OPEN BY
RRH CURRENT
RRP
&
RRG
HELD OPEN
BY MAGNETIC
BIAS
(NOTE I)
TRIP THROUGH
ZP
&
RRP
TRIP
THROUGH
ZP
&
RRP
RRP
&
RRG
HELD OPEN
BY RRH
CURRENT
RRP
&
RRG
HELD OPEN
BY
MAGNET IC
BIAS
TRIP
THROUGH
Do, Io.
&
RRG
TR I P
THROUGH
Do ,
Io . &
RRG
�
RRH COIL I S ENERGIZED BY ITS OWN TRANSMITTER WHEN CHANNEL USES S INGLE FREQUENCY OPERAT I ON .
THIS FEATURE I S NOT ESSENTIAL TO PROPER OPERATION
� !05
OPERATION IS INEFFECT I VE SINCE CSG CONTACT CLOSES TO STOP BLOCKING S I GNAL .
I.L. 41·911C
407C402
5
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