Nexus 1250 - Nexus 1250;1252 Meter Specifications

Doc# E107706 2 - 17
2: Meter Overview
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
2.9: Nexus
®
1250/1252 Meter Specifications
UL Measurement Category - Category III
Rated Altitude - 2,000 Meters Maximum
Specification
Nexus
®
meter
Control Power Requirement Option D: 24VDC (-20%) to 48 VDC
(+20%)
Option D2: 120V AC/DC (-20%) to
230VAC (+20%)
Connection Screws’ Torque (6 to 9) in-lb max. or (0.68 to 1) Nm
max.
Input Voltage Range 150 Volts Phase to Neutral, 300V Phase
to Phase (Standard; for use with PTs)
300 Volts Phase to Neutral, 600V Phase
to Phase (Option G)
Voltage Input Withstand Capability Meets ANSI C37.90.1 Surge withstand
capability
Voltage inputs optically isolated to
2500VDC
Input Current Range 10A Max. (Programmable to any CT
Ratio)
Fault Current recording to 60A peak
secondary based on 5A Full Scale
NOTE: 1A and 0.25A current inputs are
available by special order.
Current Input Terminals 8-32 Threaded Studs; The current
inputs are only to be connected to
external current transformers
Current Input Withstand Capability (at
23
o
C)
Continuous rating - 20A
Surge - 100A/10 secs, 300A/3 secs,
500A/1 sec
Burden Voltage: 0.05VA @120V rms
Current: 0.002VA @5A rms
Isolation All inputs and outputs - 2500V
All Com ports are isolated from each
other
Sensing Method RMS