BECKWITH ELECTRIC M-0420, Instruction Book

Page: 23 / 174

2–5
Application – 2
20
6
5
8
7
10
9
a c b
19
12
11
19
20
18
17
15
16
13
14
A
B
C
a
c
Power
Transformer
AC
Circuit
Breaker
I
a
I
b
I
c
I
N
V
N
V
N
Generator
32
52
52I
V
c
V
b
V
a
b
30
24
SYSTEM RELAY
SYSTEM RELAY
33 60 F.L. Input
External Status
Common
52b Breaker
Status Input
Chassis Ground
UTILITY
GENERA
T
O
R
11
12
I
N
➁
➀
➁
➀
R
n
NOTES:
a
If voltage is used for generator neutral fault detection, the 59N input is not available for utility ground fault
monitoring at terminals 19 and 20.
b
The Neutral Current input can be used either at the transformer neutral or the generator neutral, but not both
simultaneously.
Figure 2-2 Intertie Protection–Typical Three-Line Diagram