Simplified Block Diagram - ABB Arc Guard System TVOC-2 Installation And Maintenance Manual

Draft, ne pas diffuser Tue Dec 18 2018 15:16:42 GMT+0100 (Romance Standard Time)
1.7.2

Simplified block diagram

Table 5
A) Testing facilities:
R29
Simulating a test current
S1 1= Test position
2= Operation position
V22 Red
ON= S1 in test position
OFF= S1 in operation position
B) Setting facilities:
R21
Overcurrent setting
S2 1= Input 9 not used
2= Input 9 used
V27 Yellow
ON= Load current <70% of set
overcurrent level
V29 Green
ON= Load current <100% of set
overcurrent level
OFF= Load current >100% of set
overcurrent level
X) Current range bridge connections:
1A
24- 17, 25- 20, 26- 23
2A 24- 16, 25- 19, 26- 22
5A
24- 15, 25- 18, 26- 21 On delivery
Terminals
1...6 Current transformer terminals
7...8
Optical output, current signal to a Current
Sensing
Unit or an Arc Monitor
9
Optical input, current signal from another
Current Sensing Unit
10 and 12
24 V DC
11 and 12 60 V DC
48 V DC, with a wire between 11 and 13
13 and 12 110 - 125 V AC/DC
14 and 12 12 220 V DC, 230 V AC
ABB
CURRENT SENSING UNIT INSTALL ATION AND MAINTENANCE GUIDE
1
A)
S1
R29 V22
1
2
B)
S2
1
2
R21
V27 V29
10 11 12 13 14
N
12 10 11 13 14
-24V
11
*)
-60V
≅110 - 125V
-220V, ∼230V
N L
9
8
7
X)
1-2
23
22
26
21 6
5
20
19
25
4
18
3
17
16
24
15 2
1
*) 48 V DC w
between 11