PHK series Backup/Standby/Interactive is in standby status with batteries being charged in normal AC time. When the power supply
unexpectedly shuts down, the built in inverter will in no time convert the battery output into AC to keep stable power supply. The UPS
is generally considered high rate, low noise while running and cost effective, mostly used in comparably stable environment with a
small fluctuation of utility power and lower requirement of power supply quality.
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