Model# CRD-020

AC Current Relay w/ Setpoint

OPERATIONS MODE:

  • Under Current: The output relay will energize when instrument power is applied and the current is above the set point threshold. It will remain in a “Fail Safe” mode until either the input current drops below the set point threshold or instrument power is removed.
  • Over Current: The output relay will energize when instrument power is applied and will remain in a “Fail Safe” mode until either the instrument power is removed or the input current exceeds the set point threshold level.

FEATURES:

  • Programmable set point relay setting for input current, threshold levels, over and under current operation.
  • Internal DIP switch to set the current ranges of either 0-5, 0-10, 0-15, or 0-20 amperes, and the relay mode for under or over current operation.
  • Lid mounted two digit numerical push-button switch calibrated as percent of full-scale with a threshold range of 1 – 99%
  • Red LED lamp lights to indicate when threshold level has been obtained.
  • Highlighted area indicates Factory Setting. Unit is shipped from the factory with a 0-5 amp input and in an over current relay mode. The set point relay can be set to provide any one of the four current ranges and mode of operation.
  • Internal Program Switch..8 Position DIP switch

Overview

Response Time to 90%See Data Sheet
Set Point (Digital)01 – 99 %, 01 minimum
Dielectric Test(Input/Output/Case)1500Vac
Instrument Power85-135Vac, 50-400Hz, 2.5VA

Accuracy

ClassSetpoint ±2 digits

Input

Current Ranges0-5, 0-10, 0-15, or 0-20Amps
BurdenAny Range 0.5VA Max
Over CurrentAny Range 25Aac
Over Current @ 50Aac 10 Sec/Hr
Over Current @ 250Aac 1 Sec/Hr
FrequencyNom. 60Hz, 50 to 425Hz
Current Detection 5A Range: 5A Range: Current at 80mA
Current Detection 10A Range: 10A Range: Current at 160mA
Current Detection 15A Range: 15A Range: Current at 200mA
Current Detection 20A Range: 20A Range: Current at 220mA

Output

RelayForm C, SPDT
Rating120Vac, 3A
Mechanical Operations1 Million

Model# CRD-020-Current-Relay

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