The AP910 Arc Flash Protection Device adopts advanced visual PLC logic programming design, with modularized software and hardware architecture. It integrates dual detection functions of arc flash detection and current detection, and can send relay tripping signals to cut off faulty circuits within an ultra-short time.

It is applicable to power grids below and including 110kV voltage level in industries such as electric power, petrochemical, coal, metallurgy, real estate, water conservancy, commercial buildings and municipal engineering.
Current accuracy: ≤±0.2%
Voltage accuracy: ≤±0.2%
Remote signal resolution: ＜1ms (DC24V)
B-code time synchronization: ＜1ms
Rated frequency: 50Hz
AC current measurement range: 0~20In, measurement error ≤±2.5%
Arc flash detection range: 8000lx~42000lx, detection error ≤±0.2%
Time element performance: Within 0~2s (inclusive), time error ≤±40ms; Within 2s~100s, time error ≤±2% of the setting value
Protection power supply circuit: Power consumption ≤20W under normal operation; Power consumption ≤40W during protection operation
AC current circuit burden: ≤1VA per phase at rated current In=5A; ≤0.5VA per phase at rated current In=1A
Rated operating voltage: DC220V/110V, allowable voltage deviation: +15%, -20%
Rated AC current: 5A or 1A
Thermal stability of AC current circuit: Continuous rated operation at 2In; 10s short-time withstand at 20In; 1s short-time withstand at 40In