Effective 10/2004
Page 20
I.L. 70C1036H05
Figure 3.1 Digitrip 1150 Block Diagram with Circuit Breaker Interface
(Load/
Low
er
)
(L
ine/
Uppe
r)
N
ABC
AU
X C
T
s
Res
idual
G
rou
nd
De
tec
ti
o
n
T
y
p
ic
a
l P
h
as
e or
G
rou
nd S
e
ns
in
g
R
e
sist
o
r
Br
id
g
e
Ci
rc
ui
ts
In
te
rnal
Po
w
e
r
S
uppl
y
P
T
Modu
le
Mak
ing Cur
rent
R
e
le
as
e C
ir
c
ui
tr
y
(S
ee
S
e
c
ti
o
n
3.
3)
Tr
ip
Act
u
a
to
r
LE
D
Pu
lse
Ci
rc
ui
t
+
3
V Ba
tt
e
ry
P
O
W
E
R/
RE
LA
Y
M
o
dul
e
FE
T
Tr
ip
Tr
ip
L
E
D
s
CH
ip
TM
CH
ip
C
h
ip
TM
TA
Cu
rr
e
n
t S
ensor
s
4 bi
t
Lat
c
h
Chi
p
Z
one I
n
te
rl
oc
k
s
Z
IN
Z
OU
T
Ra
ti
n
g
Plu
g
Ke
y
Pa
d
A
B
IN
CO
M
T
rans
-
cei
v
er
Acce
s
s
o
ry
Bu
s
Au
x
Re
la
y
Dr
iv
er
s
Ch
ip
C
URRE
NT
P
rot
ec
ti
on
Di
s
p
la
y
&
VO
L
T
AG
E
P
R
OT
E
C
T
ION
Al
a
rm
Tr
ip
St
a
tu
s
LE
D
