... three phase SCR power regulator,thyristor power controller,SCR power regulator. single phase SCR power controller new version S9 ... ,22KW,28KW,33KW,39KW,44KW.Auxiliary power source: 220VACnput signal: 4~20mA,1~5VDC ... adjusting range 1~22 seconds.(Only for the phase control product).* Main power is one spec. ... immediately. Once the malfunction is eliminated and power is restored, the system will buffer the ...