2
6LE007331A
01 About this manual
4
1.1
Safety instructions
4
1.2
Using this manual
5
02 Sentinel electronic trip unit
6
2.1
Description
6
2.2
Display
10
2.3
LI trip unit
11
2.4
LSI trip unit
12
2.5
LSIG trip unit
13
03 The types of protection device
14
3.1
List of protection devices
14
3.2
Long time delay protection
15
3.3
Short time delay protection
17
3.4
Instantaneous protection
19
3.5
Ground fault protection
20
3.6
Neutral protection
21
3.7
Zone Selective Interlocking function (ZSI)
22
04 Protection settings
25
4.1
Principle 25
4.2
Long time delay (LTD) protection setting
32
4.3
Short time delay (STD) protection setting
34
4.4
Instantaneous (INST) protection setting
36
4.5
Ground fault (GF) protection setting
37
4.6
Neutral (N) protection setting
39
4.7
Reviewing the settings
41
05 Circuit breaker operation
44
5.1
Description 44
5.2
Circuit breaker closing
47
5.3
Circuit breaker opening
49
5.4
Locking the opening and closing push buttons
51
5.5
Locking the circuit breaker in the open position using padlocks
53
5.6
Locking the circuit breaker in open position using keylocks
56
5.7
Locking the circuit breaker in the chassis using padlocks
60
5.8
Locking the circuit breaker in the chassis using keylocks
63
5.9
Racking interlock RI
67
06 Positions of the withdrawable circuit breaker in the chassis c
69
07 Positions of the withdrawable circuit breaker in the chassis
70
7.1
Changing from connected position to test position
70
7.2
Changing from test position to disconnected position
73
7.3
Changing from disconnected position to test position
75
7.4
Changing from test position to connected position
77
Contents
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