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Overload Relay |   |
 +44 (0) 118 9700010 sales@icc-gb.com |
 
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EOCR-AR
ELECTRONIC OVERLOAD RELAY WITH AUTO RESET
Introduction
1) Adjustable Auto reset Time(0 - 120 seconds)
2) Single Timer for starting and trip Delay
3) Overload and Phase Loss Protection
4) Visual Current Setting Aid and Trip Indication(LED)
5) Flexible Power Supply
(90 to 260VAC, 180 to 480VAC)
6) Fail-safe Protection
Description
Two of the three phase motor currents are monitored by current transformers.
The CTs form integral part of the relay, and external CTs are required for
currents
above 60Amps. internal solid state circuitry compares the acual motor current
with the preset load current, set by the Load Knob(Load). When current level
is
greater than the preset point. due to overload or single phasing,
red LED illuminated and after the elapse of the preset delay time,
SPDT relay switches contact. The red LED remains illuminated,indicating an
overload trip
has occurred. After the elapse of preset Reset Delay Time(maximum 120sec),
it resets automatically. immediate reset with of Reset button or remote electrical
reset by interrupting control power, is possible. the starting delay and trip
delay times
are simultaneously set with single O-Time Knob and these timing functions
are not independent.
Test button provides means of testing the operation and integrity of the device
with or without
motor running. The actual load current can be determined with visual aid of
LED(no Ammeter required).
Simply adjust the the Load Knob slowly anti-clockwise until red LED flickers.
The flickering red LED indicates 100% of actual motor current.
How to set up
1) Set the trip delay time at the O-Time Knob,
not less than normal run-up time of the motor.
2) Set the desired reset time on the Reset time Knob(R-time)
3) With the control power on, depress Test button,
and hold. Verify the red LED illuminates and tripping
of the
relay after the preset time. Red LED remains on until
relay resets
automatically after the preset delay.
4) When commissoning relay or motor, set the load knob current to
the full load amperes, and engage the load.
Then turn the load knob slowly CCW, until the LED
flashes,
where the 100% of actual load current is indicated.
Set the Load Knob to the desired trip current.
5) Periodic testing of the Test facilty is required to ensure full protection
and regularly as Preventive Maintenance.
ORDERING INFORMATION
