Monitoring accuracy

1) Voltage and current: 0.10%; Voltage fluctuation: 2%;

2) Power, power factor: 0.20%; Flicker: 2%;

3) Frequency deviation: 0.005HZ; Voltage deviation: 0.10%;

4) three-phase voltage unbalance: 0.15%; Three-phase current unbalance: 0.50%;

5) The harmonics meet the Class A requirements stipulated in QGDW 10650.2_2017;

6) Interharmonics meet the Class A requirements stipulated in QGDW 10650.2_2017;

Transient measurement

1) Duration: error <10ms or %1

2) Depth: error <0.2%

3) Recording time: 60S Max

Working power supply

1) Rating: AC/DC 110-220V

2) Allowable deviation: -20%--+%15

3) Power consumption: <15W

Ac current input

1) Input mode: current transformer

2) Rated In: 5A/1A

3) Measuring range: 0-2In

4) Power consumption: ≤0.5VA/ channel

5) Overload capacity: 2In continuous work; 40In allows 1S

Ac voltage input

1) Input mode: input of voltage transformer

2) Rated Un: 57.7V/100V or 220V

3) Measuring range: 0-1.2Un

4) Power consumption: ≤0.5VA/ channel

5) Overload capacity: 2Un continuous operation; 2.4Un allows 1S

Switching input

1) Working voltage: DC110V/DC220V/DC24V

2) Input mode: null contact or active contact

3) Isolation mode: photoelectric isolation, isolation voltage 2500V

Communication interface

1) RJ-45 interface: 10/100M adaptive; Support TCP/IP and FTP protocols, 100Base -T.

2) RS-485 interface: speed 9600; Supports Modbus-RTU.

3) Fiber Ethernet interface: 100M; LC multimode; Support IEC 61850-9-1 or -9-2 standards.