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Effective 8/13/99
Page 12
I.L. 70C1037H02
Figure 2.4 Digitrip Neutral Sensor Types
Figure 2.5 4-Pole–3200A Frame Using Residual Ground Fault (Earth-Fault) Sensing
In th is s ch em e , all b re ak e r s ec o nd ary c urre nts (a t th e 10 0 m A lev el) are su m m e d to ge th er a t the P C
bo a rd d on ut tra ns form e r to s e ns e grou nd fa ult v ia e lem e n t R
5
.
D o no t jum p er on s e c on d ary c ontac ts B -6 , B -7 . T h is w ill de fea t a ll g ro un d fau lt p ro tec tio n in
ap p lic a tio n fo r 4 p ole brea k er.
G rou nd fa ult s ty le trip un it is ins ta lled .
3
2
1
N o tes :
S ou rc e
L
N
R
5
D ig itrip 52 0
w ith G F
R /1
R /1
2
1
K 2-8
Lo a d
B -6
K 1-4
K 1-3
10 :1
10 :1 A U X . C T
K 2-9
B -7
K 1-5
K 1-2
B lac k
Trip
A c tu a to r
+
-
L
B
L
C
L
A
K 1-6
K 1-7
K 1-8
K 1-9
1
1
1