NSR689RF-D Voltage Measurement and Control Device

State Grid NARI NSR689RF-D Voltage Measurement and Control Device

1 Overview

1.1 Product Features

1.Bay-level devices adopt a high-performance hardware platform with a 32-bit RISC processor, offering powerful functionality.

2.Utilizes high-reliability industrial-grade components as the main body, employing automatic monitoring and compensation technologies to enhance hardware circuit stability and reliability.

3.Enclosed, reinforced unit chassis resists vibration, with multi-layer shielding for strong interference resistance, suitable for extremely harsh environments. The 6U chassis can be installed dispersedly on switchgear cabinets for operation.

4.Analog circuits use 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.

5.Large-screen LCD display, intuitive and user-friendly interface menu, detailed and clear information, convenient for operation and debugging.

6.Modular design and structure with strong expandability.

7.The device is equipped with comprehensive protection segments and outputs, fully leveraging the advantages of microprocessor-based protection and greatly facilitating user operation.

8.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.

9.Remote control of circuit breakers and soft panels, with remote operation records and statistics.

10.Comprehensive device self-test strategy.

1.2 Technical Parameters

1.2.1 Electrical Parameters

1. AC Input

„AC Current

Rated Frequency50Hz

Phase SequenceABC

Rated Current (In)1A 5A

Linear Range20A 100A

Continuous Overload Capacity10s Overload Capacity

1s Overload CapacityDynamic 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 Range130V 130V

Continuous Overload Capacity10s Overload Capacity50V/1.5Un

System Overview

1s Overload Capacity250V 250V

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