Overview
The PR240 intelligent motor protection relay provides comprehensive protective, monitoring, and control functions for low-voltage motor protection.
Feature of PR240 intelligent motor management relay
- This intelligent motor protection relay is suitable for the comprehensive protection of motors with voltage levels of 0.66KV and below, accommodating various current specifications.
- It provides comprehensive motor protection by monitoring the current, voltage, and other parameters of the motor’s three-phase circuit.
- Equipped with a wide-temperature LCD and bright indicator lights, it displays the operating status and data effectively.
- The intelligent motor management relay offers programmable settings, allowing easy on-site adjustment of parameters such as setting current and protection settings.
- It includes an optional 1-channel DC 4-20mA analog transmission output to interface with industrial computers.
- With 7 channels of switch input collection and 4 channels of relay output, it supports various start control methods.
- The power supply voltage ranges from AC/DC 85V-265V, making it universally compatible with both AC and DC power sources.
- The motor protector is designed for easy installation and disassembly using the 35mm standard guide rail installation method.
Function of PR240 intelligent motor management relay
| Protection Function | Start timeout, overload, overcurrent stall, phase failure, current unbalance, short circuit, underload, temperature, restart, overflow fault (fault current contactor breaking capacity) tripped circuit breaker |
| Optional protection function | Ground leakage, overvoltage, Undervoltage, frequency, underpower factor, TE protection, anti-shock |
| Connection method | Extentiontype |
| Programmable operating modes | Protection mode, direct start mode, two-way reversible start mode, two-relay mode, two-speed click start mode, circuit breaker direct start mode |
| Communication interface | 1 RS485 interface, communication protocol Modbus-RTU; optional 2 RS485 interfaces, optional Profibus-DP interface |
| Switch input | 10 DI |
| Relay output | 5-way DO |
| Optional Analog input | 1-2 channels DC 4-20mA analog output, programmable parameters |
| Measurement display | three-phase current, ground leakage current, three-phase current unbalance rate, heat capacity, thermal resistance, three-line voltage, frequency, power factor, active power, reactive power |
| Fault record | a maximum record of 99 words of recent fault information, resolution IS |
| Statistical information | record the total running time, total parking time, number of stops, and number of trips of the motor |
| Under-voltage and voltage-loss restart | realize short-term under-voltage and voltage-loss restart functions |
