Indian transformers & electricals manufactures a wide range of servo voltage controllers in three-phase and single-phase air/oil cooled type as per is: 9815/1994 with the latest amendments. These are designed for balanced as well as unbalanced loads and input voltage supplies. The input voltage range varies from 210-470 v for three-phase and 120-270 v for single-phase, or as per the customer`s requirement. The fully automatic servo voltage controllers are designed to overcome and control voltage fluctuations due to diverse loading duties and line losses, arising in the transmission and distribution network. These carry the advantages like controlled and constant voltage, correction speed ranges from 8 to 32 v, reduced failure rate of electrical equipment, reduction in down time/ maintenance expenses, improvement in power factor and reduction in mdi, energy saver. Besides standard fittings as specified in the is optional fittings/protection/cutoffs such as under/over voltage, overload, low/high frequency, single phasing, reverse phasing, automatic time delay, audio/visual indicator at tripping conditions, rf filter and surge suppressor, provision for high temperature thermal cutoff and servo by pass arrangement are provided as per the customer`s requirement.
