Authorized Service
For GE parts and service, call: 773 299-6600
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
LCD & Keypad . . . . . . . . . . . . . . . . . . . . . . . . . 7
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
ATS Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Introduction
GE Zenith Transfer Switches are used to provide a continuous
source of power for lighting and other critical loads by auto-
matically transferring from source 1 power to source 2 power
in the event that source 1 voltage falls below preset limits.
Voltage sensing and system control is performed via a
state-of-the-art microcontroller located on the cabinet door.
It is designed to give highly accurate control of the transfer
switch system.
All GE Zenith transfer switches are designed for use on
emergency or standby systems, and are rated for total
system or motor loads. Transfer switches are UL Listed
under Standard 1008 and CSA Certified under Standard
C22.2 No. 178 and IEC Listed under Standard 947.
Page
Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Delayed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
40-200 Amps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
225-400 Amps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
600-1200 Amps . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4000 Amps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
40-400 Amps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
600-1200 Amps . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4000 Amps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
NOTE
A protective device such as a molded
case circuit breaker or fused disconnect
switch MUST be installed on both
sources of incoming power for circuit
protection and as a disconnection device.
All references made within this manual
about the term "S1" or "Source 1"
relate to a Normal Power Source.
All references made about the term "S2"
or "Source 2" relate to an Emergency
or Alternative Power Source.
S:
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