| Customization: | Available |
|---|---|
| Theory: | Voltage Relay |
| Usage: | Motor Relay |
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| 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 | Extention type |
| 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 |
The working environment of PR 240 Intelligent Motor Management Relay
| Motor-rated voltage: | AC380V / AC660V |
| Motor rated current: | 0.5-820A |
| Working temperature: | -10C ~ +55C |
| Storage temperature: | -25C ~ +70C |
| Relative humidity: | < 93% RH |
| Elevation: | not more than 3000 m |
| Atmospheric conditions: | installation site does not allow the explosive medium, containing gas to corrode metal and damage the insulation and conductive medium. |
Measuring the accuracy of PR 240
| Current: | ± 0.5% @ 10% to 200% of Ie |
| Voltage: | ± 0.5% @ 10%~150%Ue |
| Frequency: | ± 0.1% @ 45 ~ 65Hz |
| Power factor: | ± 1.0% @ 0 ~ 1.000 |
| Active Power | ± 1.0% @ 0 ~ 500kW |
| Leakage current: | ± 1% @10% to 100% of Ir |
| Analog Output: | ± 1% @4 ~ 20mA |
Electrical parameters of PR 240 Motor Protector
| Auxiliary Power: | AC90-240Vac/dc |
| Power consumption: | <10 VA |
| Insulation resistance: | > 100MΩ |
| Relay: | Alarm relay @ 5A / 250VAC, 5A / 30VDC (NO node) |
Electrical test of PR 240 Motor Protection Relay:
| IEC 61000-4-2 | level III |
| IEC 61000-4-4 | level III |
| IEC 61000-4-5 | level III |
| IEC 61010-1 | AC2kV/1min Between power/input / output |
CT accessories for motor protection relay
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