Woodward 8406-121 User Manual

Manual 26174 EGCP-2 Engine Generator Control Package
Woodward 83
Overcurrent Delay
 Range 0.1 – 20.0 seconds
 Used with the Overcurrent Level and Rated Current to determine the
amount of time (AMP
SECONDS) any current can be greater than the
overcurrent level before an alarm or shutdown is received.
 Overcurrent Detection begins when current exceeds Overcurrent Level
 AMPSECONDS
Overcurrent Delay
x (Overcurrent Level – Rated Current)
 If the Overcurrent Level is set <= Rated Current, AMPSECONDS = 0.
 This will cause an Alarm or Shutdown when Rated Current is attained.
 AMPSECONDS accumulate when current is > the Overcurrent Level
 AMPSECONDS reset to 0 when current is < the Overcurrent Level
Using Figures 4-22, 4-23, and 4-24 will help determine where the Overcurrent
Level and Overcurrent Delay should be set for any application.
Rated Current
190
Time (seconds)
Overcurrent Trip Zone
Current
(per phase)
180
0 7.5
150
200
220
Overcurrent
Level
15 30
Am
p
-Seconds
Figure 4-22. Delay Time is 10 Seconds, Current goes to 190 A, an Alarm or
Shutdown will be Received in 30 Seconds
Rated Current
190
Time (seconds)
Overcurrent Trip Zone
Current
(per phase)
180
0 7.5
150
200
220
Overcurren
t
Level
15 30
Amp-
Seconds
Figure 4-23. Delay Time is 10 Seconds, Current goes to 200 A, an Alarm or
Shutdown will be Received in 15 Seconds

Woodward 8406-121 Specifications

General

Brand	Woodward
Model	8406-121
Category	Control Unit
Language	English