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32
Instruction Booklet
IB156002EN
Effective January 2022
Eaton HCU2/HCUn active harmonic
filter installation manual
EATON
www.eaton.com
Figure 36 . Control board and CT board detail
Control Board
CT Board
Table 10 . 5 A secondary maximum wire length with
6 mm
2
(10 AWG) diameter wire
CTs burden capacity
with 5 A secondary
Maximum wire length from active
filter to CT in meters (feet)
4 mm
2
(12 AWG)
6 mm
2
(10 AWG)
5 VA
7 (24)
12 (41)
15 VA
38 (124)
63 (208)
25 VA
68 (224)
114 (375)
30 VA
83 (273)
139 (457)
35 VA
99 (324)
165 (541)
45 VA
129 (423)
216 (708)
Table 11 . 1 A secondary maximum wire length with
6 mm
2
(10 AWG) diameter wire
CTs burden capacity
with 1 A secondary
Maximum wire length from active
filter to CT in meters (feet)
4 mm
2
(12 AWG)
6 mm
2
(10 AWG)
5 VA
373 (1223)
623 (2043)
15 VA
1135 (3724)
1895 (6215)
25 VA
1897 (6223)
3167 (10,387)
30 VA
2278 (7473)
3804 (12,477)
35 VA
2660 (7412)
4440 (14,563)
45 VA
3422 (11,224)
5712 (18,735)
Table 12 . 5 A secondary maximum wire length with
2 .5 mm
2
(14 AWG) diameter wire
CTs burden capacity
with 5 A secondary
Maximum wire length from active
filter to CT in meters (feet)
5 VA
7 (24)
15 VA
38 (124)
25 VA
68 (224)
30 VA
83 (273)
35 VA
99 (324)
45 VA
129 (423)
Table 13 . 1 A secondary maximum wire length with
2 .5 mm
2
(14 AWG) diameter wire
CTs burden capacity
with 1 A secondary
Maximum wire length from active
filter to CT in meters (feet)
5 VA
373 (1223)
15 VA
1135 (3724)
25 VA
1897 (6223)
30 VA
2278 (7473)
35 VA
2660 (7412)
45 VA
3422 (11,224)