Woodward EGCP-2 - Transfer Switch

EGCP-2 Engine Generator Control Package Manual 26174
100 Woodward
Transfer Switch
Check Mains Breaker
 Used to activate checking of mains C.B. Aux. Discrete input when enabled.
 If disabled, unit relies on other units with this set point enabled to broadcast
state of mains C.B. Aux. contact over network.
 Units Controlling Mains Breaker must have Check Mains Breaker Enabled.
Fast Transfer Delay
 Time required for a transition in switching from Mains to Generator
operations, and from Generator to Mains operations.
 Critical for Open Transfer applications.
 The transition time between Bus and Mains sensing is 1.2 seconds.
o With the Fast Transfer Delay set for 0.1 seconds, the transfer will take
1.3 seconds.
Mains Stable Delay
 Period of time required for the mains to be declared stable (within voltage
and frequency limits for the specified time) before transition from
generator(s) to mains.
Generator Stable Delay
 Period of time generator must be declared stable (within voltage and
frequency limits for the specified time) before transition from Mains to
Generator, as well as dead bus closing.
Load Surge
 Used only in Base Load or Process Control. (Mains Parallel Operations)
 Set to trigger at a percent of total generator load shift per second while
operating in Mains Parallel. (% Rated Load/Second)
 Can be set for Loss of Mains Detection.
 Instantaneous Trigger.
Load Surge Alarm
The load surge condition will cause a response defined by this set point. The
available responses are:
 Disabled
 Warning
 Loss of Mains
 Loss of Mains with Alarms
Main Volt High Limit
 Alarms when Mains Voltage exceeds Alarm Set Point.
 Alarm can be set for Loss of Mains.
 If Mains Voltage is above High Limit, Mains are not considered stable, and
the EGCP-2 control will not issue a mains breaker closure command.