EECL-EFOCPR is a self-powered Overcurrent (OC) and Earth Fault (EF) relay designed to support reliable
protection and improved network performance.
Key Features
OC and EF protection for practical grid
protection needs
Self-powered design for resilient operation
Engineered for durability and performance in
demanding environments
Supports modern monitoring and protection
strategies
Technology Performance Index
Working Conditions
Parameter
Specification
Working temperature
-30°C to 70°C
Storage temperature
-40°C to 85°C
Relative humidity
5% to 95%
Atmospheric pressure
70 KPa to 110 KPa
Altitude height
Not higher than 5000 m
Electrical
Technological Parameters
Parameter
Specification
Rated data
AC current:
1A
Frequency:
60Hz
Power: 24VDC
to 280VDC, 24VAC to 280VAC
Self-powered
by acquiring power from phase CT
Integrated CT
for sampling and acquiring power in device
Overload capability
Current circuit
long-term running: 10A
Power consumption
Power-supply
circuit: no larger than 5VA
Each AC input
circuit: no larger than 0.5VA
Starting
power consumption: no larger than 1VA
Measurement scope
Phase
current: 0.05A to 20A, with auxiliary power supply
Earth
current: 0.05A to 10A, with auxiliary power supply
Minimum
starting current for self-powered operation: single-phase electricity 0.160A, 3-phase
electricity 0.075A
Measurement accuracy
Phase
current: <= ±1% or not larger than 0.02A
External
sampling earth fault current: <= ±1% or not larger than 0.02A
Protection action time
Under 1.2 times the
fault current, action time is not more than 30ms when inrush current blocking is disabled, and not
more than 50ms when inrush current blocking is enabled.
Binary input circuit
Internal supplying
power, bearing current is 2mA
Output contact
Output contact can
continuously bear AC220V, 5A
Communication port
Front-panel
port: special communication port for debugging
Backboard
port: RS485 communication port for transmission
