GE Industrial Solutions ZBTSCTH SERIES 100 - 4000 AMPS - Manual (Page 11)

ZBTSCTH Operation and Maintenance Manual (46R-7000) Zenith Controls, Inc. 9
SECTION II - OPERATION AND FEATURES
(Continued)
3. BYPASS-ISOLATION OPERATION - 600-1200 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) Rotate four power panel latches to vertical position, slide
ATS forward and lock mechanism in place.
4) ATS can now be removed from cabinet.
f. To Reconnect ATS
1) Place ATS in slide mechanism.
2) Unlock slide mechanism. Slide ATS over power panel
latches and rotate latches to horizontal 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) Move ALH to Auto location.
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 posi
tion switch.
2. ATS - Automatic Transfer
Switch.
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 manual transfer
switch to either available source
(indicated on light panel).
5. To operate bypass switch when
ATS is in Test or Isolate:
a) Move MBH downward (to open
open Bypass Contacts BN/BE).
b) Turn BSS to opposite power
source.
c) Move MBH upward to close
into selected power source.