34
Instruction Booklet
IB156002EN
Effective January 2022
Eaton HCU2/HCUn active harmonic
filter installation manual
EATON
www.eaton.com
Figure 39 . Load side CT position single main with neutral connected
X1
Active Filter
Source
Load
X1
X1
L1
L2
L3
L2
L3
L1
X2
X1
X2
X1
CH1
X2
X1
OUT
X2
X1
X2
X1
CH2
X2
X1
IN
OUT
X2
X1
X2
X1
CH3
X2
X1
IN
OUT
IN
X1
X1 X2
X2
Factory Installed
shorting jumpers
X1
X2
Shorting
Terminal
Block
Provided by
others
N
N
Protection Device
Provided by others.
See Over-current
Protection Device
Selection for details
Figure 40 . Load side CT position single main without neutral connected
X1
Active Filter
Source
Load
X1
X1
L1
L2
L3
L2
L3
L1
X2
X1
X2
X1
CH1
X2
X1
OUT
X2
X1
X2
X1
CH2
X2
X1
IN
OUT
X2
X1
X2
X1
CH3
X2
X1
IN
OUT
IN
X1
X1
X2
X2
Optional 3
rd
CT
Required if there are Line-to-
Neutral connected Loads
downstream of the CTs.
Factory Installed
shorting jumpers
X1
X2
Shorting
Terminal
Block
Provided by
others
Protection Device
Provided by others.
See Over-current
Protection Device
Selection for details
ote:
N
The factory installed shorting jumpers must be installed.