|
Overload Relay |   |
 +44 (0) 118 9700010 sales@icc-gb.com |
 
|
|
DIGITAL
MULTI-FUNCTIONAL PROTECTIVE RELAY
WITH GROUND FAULT PROTECTION
AND AMMETER
EOCR-3DZ
O.L
& Ground Fault protection,
Selectable
Charactenistic : 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 UNBALACE,
LOCKED ROTOR, GROUND FAULT.
1. The 3phase currents and earth leakage current are
displayed in sequence.
2. Possible setting with potentiometer.
(overcurrent, delay time, operating time, ground
fault current)
3. Selectable functions and CT ratios with DIP switches.
(Phase reversal, phase loss, time-current characteristic,
G,F trip time)
Dip switch selection guide
How to set up
1. CURRENT :
Definite Time(Function SW#3 OFF) - Set
the rated motor
current 110~115% of running current after motor
run-up
Inverse Time(Function SW#3 ON) - 100% of rated
motor
current or actual load 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.
Inverse Time - Set the trip delay time according to
Time-Current characteristics
4. GROUND:
Set desired ground fault trip current and set the
trip
time with DIP SW. #4.
Time-current characteristics
Time
Current(Multiples
of Setting)
These curves are applied to more then 110% of current setting.