GE Industrial Solutions ZBTSCTH SERIES 100 - 4000 AMPS - Manual (Page 12)

ZBTSCTH Operation and Maintenance Manual (46R-7000) 10 Zenith Controls, Inc.
SECTION II - OPERATION AND FEATURES
(Continued)
4. BYPASS-ISOLATION OPERATION - 1600-4000 AMP
a. Automatic
1) Manually operated bypass switch contacts (BN/BE) are
open and ATS is supplying load.
2) Disconnect Switch (DS) is in Auto.
b. To Bypass ATS
1) Open bottom cabinet door and turn DS to Inhibit.
2) Turn Bypass Selector Switch (BSS) to same power source
as ATS.
3) Move the Manual Bypass Handle (MBH) upward.
c. To Test ATS
1) Bypass per above instructions.
2) Rotate crank mechanism counterclockwise until ATS Test
light is illuminated.
3) Turn DS to Auto.
4) Test Switch (TS) on bottom cabinet door will allow electrical
operation of ATS.
d. To Isolate ATS
1) Bypass per above instructions.
2) Rotate crank mechanism counterclockwise until ATS
Isolated light is illuminated.
e. To Remove ATS
1) Bypass and isolate per above instructions.
2) Disconnect multipin plugs and external connections to ATS.
3) Slide four corner latches of ATS to innermost position.
4) ATS can now be removed from cabinet.
f. To Reconnect ATS
1) Roll cart back into cabinet.
2) Slide four corner latches of ATS to outermost position.
3) Turn DS to Inhibit.
4) Manually position ATS into same source as bypass switch.
5) Reconnect multipin plugs and external connections to ATS.
6) Rotate crank mechanism clockwise until ATS Test light is
illuminated.
7) Turn DS to Auto and use TS to electrically operate ATS.
8) Turn DS to Inhibit.
9) Rotate crank mechanism clockwise until ATS location
pointer is aligned with Auto mark on location indicator
(ATS must be in same source as bypass).
10) Turn DS to Auto and open bypass with MBH.
11) ATS is now fully automatic.
Legend:
1.
BP - Bypass Switch
(indicated by contacts
BN/BE) is a three position
switch.
2. ATS - Automatic Transfer
Switch.
5. To operate bypass switch when
ATS is in Test or Isolate:
a) Move MBH downward (to
open Bypass Contacts
BN/BE)
b) Turn BSS to opposite power
source.
c) Move MBH upward to close
into selected power source.
Notes:
1. DS in Inhibit will prevent ATS
electrical operation.
2. DO NOT use excessive force
on mechanical handles.
3. Figures depict Bypass Normal.
Sequence is the same for
Bypass Emergency.
4. When ATS is in Test or Isolate,
bypass switch is a manual
transfer switch to either available
source (indicated on light panel).