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Overload Relay |   |
 +44 (0) 118 9700010 sales@icc-gb.com |
 
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DIGITAL OVERCURRENT RELAY
MODEL : EOCR-3DM
(Selectable Charactistic : Definite/Inverse Time)
Introduction
BASED ON MCU(MICRO CONTROLLER UNIT) AND ADOPTED
ASIC(Application Specific Intergrated Circuit)CHIP
MULTI-FUNCTIONAL PROTECTION : OVERCURRENT,
PHASE REVERSAL, PHASE LOSS, PHASE UNBALANCE,
LOCKED ROTOR.
1) The real current of 3 phases are displayed in sequence.
2) Possible setting with potentiometer.
(overcurrent, delay time, operating time, alert)
3) Selectable functions and CT ratios with DIP switches.
(phase reversal, phase loss, time-current, characteristic,
alert signal)
How to set up
1. CURRENT : Definite Time - Set the rated
motor current by
"CURRENT" potentiometer. For protection
of connected
machinery with motor, it is rrecommended to
set the
110~115% of running current after motor current
is
stabilized.
Inverse Time
- 100% of rated motor current or actual motor
current is recommended.
2. D-TIME : Set the expected run-up time of motor by
"D-TIME" potentiometer.
3. O-TIME : Definite-Time - Set the desired
trip delay time.
(from over the preset current to internal relay de-energize.)
Inverse Time - Set the
trip delay time according to
Time-Current characteristics
!!!!!Select the by characteristic by DIP switch #3.
4. ALERT : After motor run-up, slowly turn the "ALERT"
potentiometer CCW,until the "a" flashes
and number
displayes on the screen. Then the number indicates
the load
factor of the motor. refer to "FUNCTION AND
INDICATION OF ALERT"
Time-current characteristics
Time
Current(Multiples
of Setting)
!!! These
curves are applied to more then 110% of current setting.
Dip switch selection guide
