Current transformer connection, Afq-4w instruction manual 23 – CIRCUTOR AFQ Series User Manual
Page 23
AFQ-4W
Instruction Manual 23
The minimum cable cross-section will depend on the filter range (
AFQ-4W
25A
50A
100A
150A
200A
L1
L2
L3
Cross-section
(mm
2
)
10
16
35
70
95
Terminal (mm)
a
≤ 10
b
≤ 20
c
≤ 21
Ø > 8
a
≤ 10
b
≤ 20
c
≤ 21
Ø > 8
a
≤ 10
b
≤ 20
c
≤ 21
Ø > 8
a
≤ 10
b
≤ 20
c
≤ 21
Ø > 8
a
≤ 10
b
≤ 20
c
≤ 21
Ø > 8
Torque (Nm)
7.6
7.6
7.6
14.4
14.4
N
Cross-section
(mm
2
)
25
50
95
2x95
2x95
Terminal (mm)
Ø > 8
Ø > 10
Ø > 10
Ø > 10
Ø > 10
Torque (Nm)
12
20
25
30
30
Earth
Cross-section
(mm
2
)
25
50
95
95
95
Terminal (mm)
Ø > 8
Ø > 8
Ø > 10
Ø > 10
Ø > 10
Torque (Nm)
12
20
25
30
30
Table 3: Minimum cross-section of input cables connected to the AFQ-4W.
Make sure that the AFQ-4W is correctly earthed to avoid the risk of
electrical discharge.
3.5.2. CURRENT TRANSFORMER CONNECTION
Current transformers TI1, TI2 and TI3, are located on the load side (downstream
of the filter) and are used for measurement and control purposes. In the active
filter, connections S1/L1, S1/L2, S1/L3 S2/L1, S2/L2, S2/L3 have to be made as
shown in