GE Industrial Solutions ZBTSCTH SERIES 100 - 4000 AMPS - Manual (Page 10)

ZBTSCTH Operation and Maintenance Manual (46R-7000) 8 Zenith Controls, Inc.
SECTION II - OPERATION AND FEATURES
(Continued)
2. BYPASS-ISOLATION OPERATION - 100-400 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) Position Manual Bypass Handle (MBH) to same power
source as ATS.
c. To Test ATS
1) Bypass per above instructions.
2) Move ATS Location Handle (ALH) to Test location.
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) Move ALH to Isolate location.
e. To Remove ATS
1) Bypass and isolate per above instructions.
2) Move ALH to Release location.
3) Disconnect multipin plugs.
4) Lift ATS out of drawer.
f. To Reconnect ATS
1) Place ATS into drawer slots (front rollers first).
2) Turn DS to Inhibit.
3) Manually position ATS into same source as bypass switch.
4) Reconnect multipin plugs and external connections to ATS.
5) Push ATS inward to engage carriage.
6) Move ALH to Test location (as indicated by light).
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 position
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,
position MBH to available
power source.