Power Transformer

SRI ® Make Power Transformers

Transformers with primary voltage of 33 kV and above are conventionally termed as Power Transformers. These transformers are generally used in the transmission as well as distribution sector. We at Shri Ram Group Of Industries have facility to manufacture Power transformer upto 10 mVA 33 kV class.
 

• Technical Specifications
• Salient Features
• Standard Fittings
• Optional Fittings

Technical Specifications
Rating	Upto 10 mVA
Duty Type	Outdoor/Indoor
Voltage Class	33, 66 kV or as per customer’s requirement
No Of  Phases	3 phase
Frequency	50/60 Hz
Vector Group	Dyn5 or Dyn11 or YNyn0 or as per customer’s requirement
Insulating Fluid	PCB FREE Mineral Oil, both inhibited & uninhibited, as per IS/IEC and customer requirement
Class Of Insulation	Class A
Tap Changer	Off Circuit or On Load
Tapping Range	+ 2.5% X 2 for OCTC or + 1.25% X 4 & -1.25% X 8 for OLTC or as per customer requirement
Winding Material	Copper with multi paper covering
Applicable Standards	IS 2006,IEC76,ANSI,IEEE
Painting	Enamel, Epoxy, Polyurethane or customer specific

Salient Features of SRI ® Make Power Transformers
Custom made to meet each and every requirement of customers conforming to National & international Standards.
Designed by experienced expert engineers using most modern software.
Highest dielectric insulation property to withstand Lightening Impulse.
Permali wood clamping rings for uniform compression of primary and secondary windings.
Step lap core design with multiple sheets per bag used in the core lamination jointing.
Designed using advanced software like AutoCAD &ProE to ensure adherence to the design parameters.
Pre composed Insulation material for minimal moisture absorption.
In House Fabrication with Laser and CNC machines
Facility to make 15-20 Transformers per month.

STANDARD FITTINGS
H.V. Bushing / L.V Bushing	Conservator oil filling hole	Bi- directional rollers
Earthing terminals pads	Drain cum bottom filter valve	Top filter valve with sampling plug
Plain Oil Level gauge	Rating diagram plate	Air release device
Thermometer Pocket	Lifting Lugs	Pressed Steel Radiators (Detachable)
Double Diaphragm Explosion Vent	Silica gel breather	Additional Neutral bushing
First filling of oil	Isolating valves for radiator	Jacking Pads
Dial type OTI with A/T contacts	Buchholz relay with A/T contacts	Marshalling box with control wiring

Optional Fittings
Dial type WTI with A/T contacts	Magnetic Oil Gauge with A/T contacts	On Load tap Changer
RTCC Panel with automatic voltage Regulator (AVR)	Pressure Release valve	DGPT Relay
Air cell bag	Scada Compatible OTI & WTI	Equaliser pipe between conservator & Explosion vent
Annunciators in RTCC panel	Force cooling arrangement with Fan Cubical

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