Transformer: Double wound Buck and Boost type continuously rated, impregnated in Insulating varnish is used for Output voltage control. The transformer is made of (CRGO) Silicon Steel Lamination and electrolytic copper wire is used for winding.

Voltage Control: A Motorised step-lessly controlled autotransformer is used for controlling the output voltage.

Electronic Circuit: Control Circuit with I.C. is provided to continuously monitor the output voltage.
Output Voltage (Adjustable):

220-240 V ± 1% or 0.5%  (Single Phase)
380-415 V ± 1% or 0.5%  (Three Phase)
Input Voltage ranges:
Single phase 160-260 or 175-250 V or as per requirement
Three phase 260-440, 300-440, 340-440 or as per requirement

Capacity:
Up to 300KVA    (Single Phase)
Up to 1000KVA   (Three Phase)

Control:
(a) Potentiometer for output Voltage Setting
(b) Switch for manual and auto use
(c) Push button to increase or decrease voltage manually in case of manual position

Metering:
A Voltmeter is provided to indicate the output voltage

Protection:
The design of the unit is such that it can withstand 20 percent overloading for short durations without any damage

Optional:
Amper meters, On-Off/switches fuse, change over switch, under-over voltage protection & indication, with or without tripping, arrangement, and single-phase protection with or without contactor