Rockwell Automation 140G-NTK-E12 LSIG and LSIG-MM Release User Manual
Page 8
DIR 1000587R0002 (L3821)
(8)
2.3 Commissioning
2.3.1 Connections
For the connections provided by user, the recommendations contained in this document must be strictly complied with.
This will enable us to meet all international reference standards and ensure perfect relay operation even under severe environ-
mental and electromagnetic conditions. Take particular care with earthing connections.
2.3.2 CS and TC connection check
If LSIG has been installed by user, proper connection of TC and CS cables should be checked (with CB open and Vaux or battery unit)
before commissioning the circuit breaker; if not so, make the right connections. If any of the red LEDs is lit, this means an error in CS
and/or TC connections. See par. 2.6.1.
2.3.3 Current sensor connection for external neutral conductor
When the current sensor for the external neutral conductor has to be connected to a three-pole circuit breaker, remember to set I
n
N
accordingly (see par. 2.4, ref. 3).
During this procedure, the circuit breaker must be open and preferably isolated.
2.4
User interface
Wording on LSIG unit front side:
Ref.
Description
1
Serial number of LSIG protection release
2
Position indicator for mains frequency DIP switch
3
Position indicator of DIP switch for setting neutral conductor’s protection
4
Test connector to connect or test release using battery unit
5
Position indicator of DIP switches for setting threshold I1
6
DIP switches for main setting of current threshold l1
7
DIP switches for fine-setting of current threshold l1
8
Alarm indicator LED for protection function L
9
Pre-Alarm indicator LED for protection function L
10
Position indicator of DIP switches for setting threshold I2
11
DIP switches for setting current threshold I2
12
Alarm indicator LED for protection function S
13
Position indicator of DIP switches for setting threshold I3
14
DIP switches for setting current threshold I3
15
Alarm indicator LED for protection function I
16
Position indicator of DIP switches for setting threshold I4
17
DIP switches for setting current threshold I4
18
Alarm indicator LED for protection function G
19
DIP switch for setting trip time t4 and type of curve
20
Position indicator of DIP switches for setting time t4
2 3
4
6
8
11
12
14
15
17 18
19
21
23
25
26
27
1
7
24
22
20
16
13
10
5
9