Usha UPS not charging problem solved in ballari

Prob:-Usha ups 860 VA not charging when Ac is on and sound from ups .

Found charging section related components defective .replacing these components problem  solved,working fine.

   Components changed are:-
          Thyristor
          Opto-coupler
          Resistor
         

Servo Voltage stabilizer 5 KVA 3 phase problem - solved in Ballari

Problem: Servo voltage stabilizer 5 kva 3 phase  problem.... solved in ballari.