Mehru Electrical & Mechanical Engineers (P) Ltd.

Tijara, Bhiwadi, Rajasthan

	Single phase, single pole voltage transformers, to connect between line & earth up to 300kV voltage class
	Both pole voltage transformers, to connect between line to line up to 36kV voltage class.
	Three phase voltage transformers star/star connected upto 36kV voltage class.
	Three phase residual voltage transformers star/ delta connected up to 36kV voltage class.

Potential transformers manufactures Indoor Resin Cast Current & Potential Transformers up to 36kV voltage class. The design of Instrument Transformers, are time tested designs over a period of several decades. All the Instrument Transformers have been type tested as per IECIS and ANSI standards.

	Coupling capacitors for power line carrier applications.
	Capacitor voltage divider (CVD) consists of one or two brown or grey glazed porcelain or silicon rubber insulator (on request).
	Capacitor elements consists of Aluminum foil insulated with paper and polypropylene film impregnated with mineral insulating oil (or synthetic oil on request) free from PCBs.
	EMU unit is filled with PCB free mineral insulating oil.
	Pressure release device is provided for each unit of CVD. On request, Stainless steel bellows can also be supplied.

Single phase, single pole voltage transformers, to connect between line & earth up to 300kV voltage class-Both pole voltage transformers, to connect between line to line up to 36kV voltage class.-Three phase voltage transformers starstar connected upto 36kV voltage class.-Three phase residual voltage transformers star delta connected up to 36kV voltage class.

Outdoor oil cooled instrument transformers are hermetically sealed type in construction. The whole CTPT unit is dried in an air heating oven under very high vacuum & strictly controlled conditions. Measurement of amount of moisture taken out from the CTsPTs is done at regular intervals during the vacuum drying process. After the process is over the CTPTs are filled with filtered, de-aerated EHV grade transformer oil under vacuum. The oil filtration plant, the processed oil storage tank & the vacuum drying chambers are all interfaced together to ensure that the CTsPTs are filled with oil untouched by human hand. To seal the CTPTs the space left for expansion on the top is filled with dry & pure -nitrogen gas through a non -returnable valve at pre determined pressure.