• Globe Rectifiers

LT Automatic Voltage Controller (Stabiliser)

Globe Rectifiers offers an LT Automatic Voltage Controller (Stabiliser). Voltage fluctuation is a common phenomenon in every part of the country. Automatic voltage controller (stabiliser) is an equipment to obtain constant voltage from fluctuating supply system. The industrial units running round the clock usually face the problem of low and high voltage. 90% of industrial load is of motors. Electric motors draw considerably high current at low and high voltage. This higher current affects the electric motors causing premature failure of winding; higher current also increases the loss in cables, switches, transformer and other associated equipment; higher current of electric motors requires 15-20% higher setting of overload relay to avoid frequent tripping of motor's starter. Higher setting of overload relays has very little safety margin against single phasing and overloading conditions; with the installation of a stabiliser and maintaining a voltage 390/400 V, the motor will operate smoothly drawing 15-20% lesser current and corresponding the relay setting can be reduced by 15-20%. In case single phasing occurs, the relay will trip in 40-50 second. The motor can withstand the high current for this period and will be safe. Also, the relays, contactors, switchgears, etc., incorporated with the motor will be safe. The regulator uses heavy section of electrolytic rectangular copper strip instead of copper wire to minimise the losses and increase the efficiency of equipment. The company also uses self-lubricating carbon roller assemblies instead of ordinary carbon brushes which offer more reliability and trouble free performance of the equipment. In the buck/boost transformer, it uses CRGO lamination to minimise iron losses and the coils of buck/boost transformer are wound with heavy section of multi strips electrolytic copper to minimise copper losses for getting better efficiency of the equipment. Globes automatic voltage controller consists of very simple electronic control circuit for monitoring and controlling voltage, repair and maintenance of which is very easy.