Nanhong Electric NRT-532 Plant Transformer Protection and Control Device

Zhejiang Nanjing/Nanhong Electric NRT-532 Transformer Protection and Control Device

The NRT-532 Plant Transformer Protection and Control Device is suitable for plant transformers at voltage levels of 66kV and below, providing functions such as protection and control.

Two-phase three-stage current protection: instantaneous overcurrent protection, quick-break protection, overcurrent protection

Overload alarm

Zero-sequence overcurrent protection on high and low voltage sides

Zero-sequence overvoltage protection

Undervoltage protection

Overvoltage protection

Non-electrical quantity protection

PT disconnection self-check

CT disconnection self-check

Operation circuit self-check

Device fault self-check

Electrical measurement: voltage, current, active power, reactive power, power factor, grid frequency, etc.

Telemetry signals: The device has a total of 15 input channels, including 13 for external telemetry signals and 2 for circuit breaker position signals.

Remote control: Capable of performing local or remote opening and closing operations for one circuit breaker.

Operation box: Features trip self-holding, closing self-holding, and anti-jumping functions.

Fault recording function: Includes 8 groups of fault records that can be maintained during power loss.

Communication function: Connects to the host computer via CAN bus.

Ambient temperature: -10 to +55°C

Relative humidity: Not exceeding 95%, non-condensing

Atmospheric pressure: 80 to 110 kPa

Other conditions: The air around the device should not contain acidic, alkaline, or corrosive substances, and should have lightning, rain, and snow protection facilities.

Standard atmospheric conditions for testing:

Ambient temperature: +15 to +35°C

Relative humidity: 45% to 75%

Atmospheric pressure: 86 to 106 kPa

Storage and transportation: -25 to +70°C