PR 240 Intelligent Digital Motor Thermal Protector Relay Used for 3 phase Electric Motor
Inquire NowDescription
The PR 240 Intelligent Digital Motor Thermal Protector Relay is designed for three-phase electric motors, offering an advanced solution for telemetry applications that require precise monitoring, metering, and control of motor functions. Compact and cost-effective, this relay is ideal for power distribution systems, particularly for end-of-line monitoring and power metering. The PR 240 excels in providing low-voltage motor protection across various applications, including pumping, air-based systems, chillers, and bulk-material handling. Its versatility allows it to be configured for a full range of medium-voltage, three-phase induction, and synchronous motors.
This device features a user-friendly panel mounting HMI unit alongside a DIN-rail mounting control unit, ensuring adaptability in different setups. With capabilities such as real-time monitoring of three-phase current and voltage, power measurement, and a wide selection of alarm and trip modes, the PR 240 is an invaluable tool for effective motor management.
Specifications
| Attribute | Details |
|---|---|
| Auxiliary Power | 85-265Vac/dc |
| Power Consumption | <4 VA |
| Insulation Resistance | >100MΩ |
| Relays | 5A/250VAC, 5A/30VDC (NO contact) |
| Motor Rated Voltage | AC220V / AC380V / AC660V |
| Motor Rated Current | 0.5-200A use internal CT; 200A-820A use external ../5A CT |
| Leakage Current Sensor | 0-1A |
| Impulse Withstand Voltage | 4 kV |
| Measuring Accuracy – Current | ± 0.5% @ 10~120% Ie |
| Measuring Accuracy – Voltage | ± 0.5% @ 10~150% Ue |
| Measuring Accuracy – Frequency | ± 0.1% @ 45~65Hz |
| Measuring Accuracy – Power Factor | ± 1% @ 0.0~1.0 |
| Measuring Accuracy – Power | ± 1% @ 0~500 kW |
| Measuring Accuracy – Leakage Current | ± 1% @ 10~100% Ir |
| Measuring Accuracy – Temperature | ± 1% @ 0.1~30 K |
| Analog Output | ± 1% (4 ~ 20mA) |
| Comm Port | RS485 MODBUS-RTU; Optional Profibus-DP |
| Digital Input | Regular 7DI, max 11 DI |
| Digital Output | Regular 2DO, max 6DO |
| Working Temperature | -10°C ~ +55°C |
| Storage Temperature | -30°C ~ +70°C |
| Relative Humidity | < 93% RH |
| Elevation | Less than 3000 m |
| Standard Reference | IEC 60947-1, IEC 60947-4 |
| Electrostatic Discharge | Severity: level III |
| Surge | Severity: level III |
| Voltage Characteristics | Between two of the power/input/output: AC2kV/1min |
Additional Information
The PR 240 is particularly suited for applications in power distribution systems, where it effectively monitors, meters, and controls motors. Its robust design ensures reliable performance in various environments, making it an essential component for efficient motor management.
