Eaton HCU2 Installation Manual

2
Instruction Booklet IB156002EN
Effective January 2022
Eaton HCU2/HCUn active harmonic
lter installation manual
EATON www.eaton.com
Contents
Description Page
Important information ...............................................................3
Definition of symbols ................................................................3
Warnings and cautions ...............................................................3
Safety precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Introduction ........................................................................4
Harmonic correction unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Neutral harmonic correction unit ......................................................4
Receiving, handling, and storing ...................................................... 5
Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Inspection ........................................................................ 5
Handling ......................................................................... 5
Storing ........................................................................... 5
Installation ........................................................................5
Foundation preparation .............................................................. 5
Installation ........................................................................ 6
Environmental requirements .......................................................... 6
Physical installation ................................................................. 6
Standard units physical description ....................................................6
Dimensional drawings ...............................................................8
Attaching the enclosure to the floor ................................................... 22
Electrical connection (HCU2) ......................................................... 23
Line voltage ...................................................................... 23
Power cable routing ............................................................... 23
Power and ground cable selection and connections ...................................... 23
Power termination covers ........................................................... 24
60 A and 120 A models ............................................................. 25
200 A and 300 A models ............................................................26
Current transformers (CTs) .......................................................... 26
Electrical connection (HCUn) .........................................................27
Line voltage ...................................................................... 27
Overcurrent protection device selection ................................................ 27
Residual current device .............................................................29
Power and ground cable selection and connections ...................................... 29
General CT information ............................................................. 31
Minimum CT requirements .......................................................... 31
CT to CT board connection .......................................................... 31
Parallel system ................................................................... 35
Wiring diagrams ................................................................... 36
Parallel communication ............................................................. 40
Control wiring .................................................................... 41
Pre-commissioning ................................................................. 43
Instruments required for commissioning ................................................ 43
Pre-energizing procedure ........................................................... 43
Installation inspection .............................................................. 43
Pre-commissioning checklist ......................................................... 43
Commissioning procedures ......................................................... 43
IT, HRG, and corner grounded systems (HCU2) .......................................... 44
Catalog numbering system .......................................................... 48
Warranty .......................................................................... 48
Disclaimer of warranties and limitations of liability ...................................... 48

Eaton HCU2 Specifications

General

Brand	Eaton
Model	HCU2
Category	Water Filtration Systems
Language	English