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42 | ABW - Air Circuit Breaker
5 FEATURES AND INSTALATION INSTRUCTIONS
5.1 EARTH LEAKAGE ADJUST:
Leakage current can be adjusted between 0.5 A until 30 A, according to table below, ground fault protection
must to be disable:
Earth leakage (optional)
Current setting
I n
0.5
1
2
3
5
10
20
30
Off
Time delay
t
Alarm time
140
230
350
800
950
Accuracy
Trip time
140
230
350
800
Table 5.1:
5.2 DIMENSIONS:
5.2.1 Toroidal CT WEG (30/5 A ratio)
Figure 5.1: Toroidal CT WEG (30/5 A ratio).
2 models available:
Model
A
B
C
D
E
F
G
H
ZCT-120
120
45
225
180
210
20
55
35
ZCR-200
200
53
310
260
286
20
70
35
5.3 EXTERNAL CT INSTALATION
Toroidal CT must be connected on buses/conductors of breaker supply. Two secundary signal conductores of
external CT must be connected on E1 and E2 protection unit terminals, a conductor in each terminal. Toroid has
5 A secundary signal, consider conductor to link CT signal for this current intensity.
ZCT or
CT External
Figure 5.2: External CT instalation.
Содержание ABW Series
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