INSTALLATION
5.Main input monitoring option only. Connect the main input harness to the breaker panel (see Figure 8):
NOTE If you prefer not to install the Neutral CT, the EMS−UGK software can perform an approximate calculation of the Neutral CT values.
Install the four 400A main CTs to the breaker panel wiring for A, B, and C phases, and Neutral. Install the 100A input ground CT to the breaker panel ground wiring.
NOTE To install a CT, remove the cap, open the body of the CT to insert the wire through the slit, and reinstall the cap. Install all CTs with the
Main Input Harness
Connect each labeled lead on the main input harness (A, B, C, Neutral, and Ground) to the appropriate installed CT. Coil and secure any excess cable away from other conductors.
If installing dual panels, repeat Step 5 for the second panel.
NOTE Verify all installed main input monitoring wiring is correct and follows NEC and local guidelines. Verify all CTs are installed with their
NOTE The input ground CT will provide valid readings only in an isolated ground system.
A
B 400A
C | Main CT |
C
400A
Input Ground CT 100A
Neutral
Ground
Lettering Cap
Figure 8. Main Input Harness Connections
18 EATON Powerware® Energy Management System (EMS) Upgrade Kit User’s Guide S 164201724 Rev 1 www.powerware.com