GE Industrial Solutions ZBTSCTH SERIES 100 - 4000 AMPS - Manual (Page 13)

ZBTSCTH Operation and Maintenance Manual (46R-7000) Zenith Controls, Inc. 11
SECTION II - OPERATION AND FEATURES
(Continued)
5. ZENITH STANDARD PACKAGE
The Zenith Closed Transition Switch comes with
the following standard features:
A3 Auxiliary contact closes when the switch is
in the Emergency position.
A4 Auxiliary contact closes when the switch is
in the Normal position.
DT Adjustable time delay before closing into
Normal source from open position (Open
Transition Mode only).
DW Adjustable time delay before closing into
Emergency source from open position
(Open Transition Mode only).
E Engine start contact closes to start the
engine generator when the Normal source
fails. 1 N.O., 1 N.C. contact.
P1 Solid state adjustable timer with range from
0.5 to 6.0 seconds. The contact closes to
start the engine generator.
T Adjustable time delay to transfer out of
Emergency source and into open position
after Normal source is restored.
U Adjustable time delay for engine cool down
after engine generator is signaled to shut
down.
W Adjustable time delay to transfer out of
Normal source and into open position after
Normal source failure.
6. ZENITH OPTIONAL
ACCESSORIES
Many control accessories are available to meet
specific and special requirements. Your
drawings indicate which accessories were
ordered with your switch.