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Technology of Electrical Automatic

PR600 Power Line Protection Relay

PR600 Power Line Protection Relay

PR600 Power Line Protection Relay is designed to protect and monitor low-voltage lines with a rated voltage below 690V and a rated current of up to 820A. This line protection device offers real-time monitoring of on-site signals and protects against faults such as overload, overcurrent, undervoltage, overvoltage, grounding, or leakage. It can perform various operation control functions, including measurement functions, self-diagnosis, maintenance management, and Fieldbus communication, among others.

The low-voltage line protector incorporates measurement functions, protection functions, opening and closing control functions, and remote communication functions. It features 10 channels of switching value monitoring that can be configured as per requirements and supports MODBUS-RTU communication bus for seamless integration into existing systems.

PR600 Power Line Protection Relay is designed to protect and monitor low-voltage lines with a rated voltage below 690V and a rated current of up to 820A. This line protection device offers real-time monitoring of on-site signals and protects against faults such as overload, overcurrent, undervoltage, overvoltage, grounding, or leakage. It can perform various operation control functions, including measurement functions, self-diagnosis, maintenance management, and Fieldbus communication, among others.

The low-voltage line protector incorporates measurement functions, protection functions, opening and closing control functions, and remote communication functions. It features 10 channels of switching value monitoring that can be configured as per requirements and supports MODBUS-RTU communication bus for seamless integration into existing systems.

Feature & Function

Feature of PR600 Power Line Protection Relay

  • Ultra-wide range working power supply AC85-265V.
  • Undervoltage, overvoltage, and frequency monitoring in 3(N)AC systems 0…690 V.
  • Digital measured value display via multi-functional LC display.
  • Save the latest 100 trip records.
  • Internal test/reset button, Integrated energy backup.
  • Asymmetry, phase failure, and phase sequence monitoring.
  • Adjustable start-up delay, response delay, and delay on release.
  • The protection functions are complete, and each protection function can realize protection shutdown, alarm, or trip.
  • Built-in 5-way relay, which can be set to protection mode and measurement and control mode.
  • Programmable analog output function, standard RS-485 communication interface.
  • 96*96mm, Modular design, small size, and flexible structure.
  • Measurement voltage, current, temperature, and frequency signals.

 

The function of the PR600 Line Protection Device
The standard configuration of PR600 has protection functions such as start-up timeout, overload, phase failure, ground/leakage protection, overcurrent stall, current unbalance protection, short circuit, underload, temperature, Undervoltage, overvoltage, frequency, under power factor, non-electricity, and other protection functions are optional.

Description Function configuration
Standard configuration Optional function
Protection Overcurrent protection section I (quick-break protection) yes No
Overcurrent protection stage II yes No
Overcurrent protection stage III yes No
Overload protection (inverse time overcurrent protection) yes No
Ground leakage protection yes yes
Overvoltage protection yes No
Under voltage protection yes No
Non-electrical protection (external fault) yes No
Anti-shock No yes
operating mode protected mode yes(can be set) No
Measurement and control mode
Communication function 1 RS-485 interface, communication protocol: MODBUS-RTU protocol yes 2way
Profibus-DP interface No yes
Switch input 10 DI inputs yes No
Relay output 5 channels of DO output yes No
Analog output 1-2 channels DC4~20mA output, corresponding parameters can be set No yes
Measurement Three-phase voltage, three-phase current, voltage, and current phase angle, ground/leakage current, three-phase current unbalance rate, heat capacity yes No
Thermal resistance, three-phase line voltage, frequency, power factor, active power, reactive power yes No
broken record Record 100 recent fault information with a resolution of 1s yes No
Fault recording Record 100 waveform information at the time of fault occurrence No yes
Statistics Record the total running time, total parking time, number of stops, and number of trips of the line yes No
Restart under voltage or loss of voltage Realize short-term Undervoltage and voltage loss restart function yes No