Zone Selective Interlocking
5.4 SENTRON 3VL
3WL/3VL circuit breakers with communication capability - PROFIBUS
120
System Manual, 03/2011, A5E01051353-02
5.4
SENTRON 3VL
5.4.1
COM20/COM 21
To be able to use the ZSI function on the SENTRON VL circuit breaker, the external
communication module COM20 (PROFIBUS DP) or COM21 (Modbus RTU) and an ETU or
LCD ETU with communication capability must be used.
'(9,&(
352),%86
75,381,7
7(67
5(6(7
352
)
,%
8
6
'
3
5(/($6(
&20
=6,,1
7,(%5
=6,287
216(22))
/
;
:(
9
$$ 63(3(
$
%
;
5.4.2
Technical data
Operating voltage min./max. (V)
20,4 / 28,8
Current consumption max. (mA)
50 mA
Automatic resetting of the outputs after a maximum of
3 s
Shortest time that blocking signal is pending at the outputs LV
100 ms
Typical tripping time including all delays
approx. 80 ms
Maximum number of switches that can be connected to ZSI IN
20
Maximum number of switches that can be connected to ZSI OUT
8
Maximum cable length with 2 x 0.75 mm
2
400 m
Power losses typ. [W]
1,2
Dimensions W/H/D (mm)
45 / 106 / 86
Weight (kg)
0,28
Temperature range (°C)
-25 / +70