Powerware 380/220V User Manual

SPECIFICATIONS

EATON Powerware

®

 Energy Management System (EMS) Upgrade Kit User’s Guide  

S

  164201724 Rev 1

 www.powerware.com

59

Table 17. Metering

Panel Monitoring Rating

Maximum 400A

CT1, CT2, CTM connections:  240V CAT III

V1, V2 connections:  208V CAT III for EMS−UGK−LV, 415V CAT III for EMS−UGK−HV  

Branch Circuits

Monitors up to 84 individual branch circuit breakers (two 42−circuit panels)

Calibration

Fully calibrated at the factory

Clock

Real Time Clock (RTC) with one−second resolution, automatic leap year adjustment,

and one month backup time

Sampling Frequency

Current and voltage for each breaker sampled 2000 times per second with a

bandwidth of 1 KHz

Current Accuracy

Main input:  ±2% from 10–100% of full range

Branch circuit:  ±5% from 10–100% of full range

Voltage Accuracy

±2%

Blinding Thresholds
(zeroing of low meters)

Panel breakers:  1/16 of breaker rating

Main current:  <6A

Neutral current (installed Neutral CT):  <6A
Neutral current (calculated Neutral):  <15A

THD alarming:  Phase current <20% of maximum phase current rating