NARI Group Corporation NSR631RF-D Transformer Protection and Control Device

1 Overview
1.1 Product Features
? The bay-level device adopts a high-performance hardware platform with a 32-bit RISC processor, offering powerful functionality.
? Utilizes high-reliability industrial-grade components as the main body, employing automatic monitoring and compensation technology to enhance the stability and reliability of the hardware circuit.
? Features a sealed, reinforced unit chassis with vibration resistance and multi-layer strong interference resistance design, suitable for extremely harsh environments. The 6U chassis can be distributed and installed on switchgear for operation.
? The analog circuit uses high-precision, wide-range components without amplitude or phase adjustment circuits. Amplitude and phase adjustments are handled by software functions, making the circuit simple, reliable, drift-free, and reducing debugging and maintenance workload.
? Equipped with a large-screen LCD display, an intuitive and user-friendly interface menu, and detailed, clear information for convenient operation and debugging.
? Modular design and structure with strong expandability.
? The device is configured with comprehensive protection sections and outputs, fully leveraging the advantages of microprocessor-based protection and greatly facilitating user operation.
? High-speed sampling and real-time parallel computing. All protection logic measurements and calculations, as well as real-time organization of fault reports and event records, are completed at each sampling point.
? Remote control of circuit breakers and soft壓板 (soft plates), with remote operation records and statistics.
? Comprehensive device self-test strategy.

1.2 Technical Parameters
1.2.1 Electrical Parameters
1. AC Input

? AC Current
Rated Frequency 50Hz
Phase Sequence ABC
Rated Current (In) 1A 5A
Linear Range 20A 100A
Continuous Overload Capability
10s Overload Capability
1s Overload Capability
Dynamic Withstand Current (Half-wave Value)
Power Consumption at Rated Current < 0.5 VA/Phase < 1 VA/Phase

? AC Voltage
Rated Voltage (Un) 100V/√3 100V
Linear Range 130V 130V
Continuous Overload Capability
10s Overload Capability

1s Overload Capability 250V 250V

Power Consumption at Rated Voltage < 0.5 VA/Phase < 0.5 VA/Phase

2. DC Power Supply
Rated Voltage 110V DC, 220V DC
Input Range 80%~120%
Ripple According to GB/T17626.17-2005 (IEC61000-4-17:2002), maximum 15% of DC voltage value
Static Power Consumption <15W
Power Consumption During Operation <25W