Woodward EGCP-2 - Figure 3-9 A. PT Wiring Relationships for Generator, Bus, and Utility Inputs

Manual 26076 EGCP-2 Engine Generator Control Package
Woodward 21
Please Note:
1. Figures 3-8a and b PT wiring can only be used in a Prime Power Application
.
2. Figure 3-8a can be used for a Single Engine LOMs detection.
3. K1 and K2 relays are not supplied by Woodward.
4. K1 and K2 relays should be connected as normally open contacts
Required PT Wiring Relationships
The EGCP-2 control uses its programmed PT-Ratio setting to calculate and
compare all PT input voltages. Thus, the EGCP-2 control requires the following
generator, utility, and plant-bus PT relationships. Refer to Figures 3-9 and 3-10.
Gen PT
Inputs
Voltage Input: Delta
A
B
C
A+
A-
B+
B-
C+
C-
480 V 120 V
480 V
120 V
PT Ratio : 4:1
Voltage Ref: 480 Vac, L-L
VIS-147
01-03-16
Mains/Bus
PT Input
N
Mains Disconnect
Bus Connect
40
47
46
45
44
43
42
41
EGCP-2
8406-116
A
B
A
C
B
A
B
480 V
120 V
A
B
A
B
C
Utility
Bus
480 VLL
Utility
Breaker
Generator
Breaker
Generator
Bus
Local
Bus
120 V
120 V
120 V
120 V
Figure 3-9a. PT Wiring Relationships for Generator, Bus, and Utility Inputs
Please Note:
1. This drawing shows EGCP-2 part number 8406-116.
2. Follow Utility/Local Bus PT wiring.