Oil Immersed Transformer

 

Total solution from design to delivery, installation & Commission.
 

We take pleasure in introducing ourselves as one of the leading manufacturer of TRANSFORMERS for over 42 years with experience in design, manufacturing, installation & commission of Power, Distribution, Cast Resin, Furnace, Earthing & Generator transformers. Mampower expert R&D team develops one of the most advanced designs to withstand short-circuit and impulse voltage tests.

It is our commitment to provide you customize transformer as per your requirement with world class quality & economical price.


Power & Distribution Transformer
Salient Features

 

  • Advanced design to withstand short circuit forces during fault.
  • Step-up and Step-down transformers manufactured
  • Low Loss and highly efficient
  • Pure copper conductor made in own plant to reduce load loss
  • Thermally upgraded insulation paper(Class A) results in Long life of transformer
  • Excellent process of shrinkage and vacuum drying of coils resulting in a sturdy construction
  • Manufactured with prime CRGO using step-lap design for low losses
  • Thermal treatment of core in own annealing plant to reduce core loss
  • Less temperature rise of core
  • Low Magnetizing Current to save no-load electricity bills & capacitors for Transformer.
  • Inherent overloading capacity due to Low Loss, High power factor and less no-load current.
  • Lower PD (partial discharge) value
  • Lower sound level
  • Transformer tank is filled with oil under vacuum process. 
  • PSR or corrugated radiator
  • Leak proof, pressure, and vacuum tested as per standard
  • Self-protected, standard protective devices as per IEC standard
  • Online monitoring facility (on request)
  • Various ratings type tested
  • Engineers
  • Design Engineers
  • Expert R&D team
  • Mangers
  • Logistics and Transportation Personnel
  • Quality Analysts
  • Experienced technicians
  • Experienced Fabricators



Power Transformer
 

Technical Parameter

Unit

 

Applied Standard

 

IEC - 60076

Type

 

Outdoor

Power Rating

MVA

Up to 20MVA

Number of Phases

 

3/ customer requirement

Rated Voltage, Phase to Phase

High Voltage Winding

kV

36/customer requirement

Low Voltage Winding

kV

12/customer requirement

Rated Frequency

Hz

50

Rated Insulation Level

Impulse Withstand, Full Wave

High Voltage Winding

kV

170

Low Voltage Winding

kV

75

Neutral Side

 

Fully insulated

AC Withstand Voltage

High Voltage Winding

kV

70

Low Voltage Winding

kV

28

Impedance Voltage at 75°C and at Nominal Ratio and 100% Rated Power

%

As per IEC 60076-5/ customer requirement

Vector Diagram (IEC 60076-4)

 

Dyn1/Dyn11/Ynd11/Ynd1/customer requirement

Type of Cooling

 

ONAN/ONAF

On load Tap- changer

Type

 

With oil/ vacuum switches

Rated Tap

kV

36

Tapping Range Capacity

%

(+5% to -15)% / customer requirement

Positions

9/17/ customer requirement

Temperature Rise at Rated Power
Maximum Ambient Temperature 40°C

Oil by Thermometer

deg. C

55

Winding by Resistance Measurement

deg. C

60

Transformer Looses

 

 

Core Loss and Rated Voltage at Rated Frequency at Nominal Tap

Watts

As per design/Customer requirement

Copper Loss at Full Load, at Rated Frequency

Watts

As per design/Customer requirement

 

 

 

Overall Dimension

mm

As per design

Overall Weight

kg

As per design

Transport Weight

kg

As per design


Distribution Transformer

 

 

Technical Specification for

Oil Filled Distribution Transformer up to36KV,5000KVA
 

Technical Parameter

Unit

 

Applied Standard

 

IEC - 60076

Type

 

Outdoor/Indoor

Power Rating

MVA

Up to 5000KVA

Number of Phases

 

3/ customer requirement

Rated Voltage, Phase to Phase

High Voltage Winding

kV

33/11/6.35/customer requirement

Low Voltage Winding

V

11/415/240 customer requirement

Rated Frequency

Hz

50

Rated Insulation Level

Impulse Withstand, Full Wave

High Voltage Winding

kV

170/75/60

Low Voltage Winding

kV

-

Neutral Side

 

Fully insulated

AC Withstand Voltage

High Voltage Winding

kV

70/28/20

Low Voltage Winding

kV

28/3

Impedance Voltage at 75°C and at Nominal Ratio and 100% Rated Power

%

As per IEC 60076-5/ customer requirement

Vector Diagram (IEC 60076-4)

 

Dyn1/Dyn11/Ynd11/Ynd11/customer requirement

Type of Cooling

 

ONAN/ONAF/customer requirement

Tap- changer

Off load Tap- changer

Rated voltage                                                                                                         

KV

12

Tapping Range

%

+2.5% to -7.5%/+5% to -5%/+10% to -10%/ customer requirement

 

position

5/7/ customer requirement

On load Tap- changer

 

 

Type

 

With oil/ vacuum switches

Rated voltage

kV

12

 

 

 

Tapping Range Capacity

%

(+5% to -15)% / customer requirement

Positions

9/17 or higher

Temperature Rise at Rated Power
Maximum Ambient Temperature 40°C

Oil by Thermometer

deg. C

55

Winding by Resistance Measurement

deg. C

60

Transformer Looses

 

 

Core Loss and Rated Voltage at Rated Frequency at Nominal Tap

Watts

As per design/Customer requirement

Copper Loss at Full Load, at Rated Frequency

Watts

As per design/Customer requirement

 

 

 

Overall Dimension

mm

As per design

Overall Weight

kg

As per design

Transport Weight

kg

As per design

 

 

Cast Resin Transformer (CRT):

 

Salient Features:

 

  • Self-extinguishing characteristics in case of fair
  • Compact and environment friendly
  • Easy installation
  • Maintenance free
  • Designed to withstand the highest short circuit stress that may occur during operation
  • High voltage coil windings are cast to prevent humidity
  • High resistance against overvoltage
  • Low decibel, high capacity and high performance
  • Low partial discharge

     
  • ENVIRONMENTALCLASS:E3

  • Transformers suitablefor heavy pollution areawith humidity above 95%

     

  • CLIMATICCLASS: C2

  • Transformers suitable for operation,transport and storage
    with ambient temperatures down to -25°c

     

  • FIRE BEHAVIORCLASS: F1

  • Transformers suitable for areaswith high risk of firebeing self-extinguishing
     

    Technical Specification for

    Cast Resin Transformer (CRT) up to 36KV, 30MVA KVA
     

     

 

Technical Parameter

Unit

 

Applied Standard

 

IEC - 60076

Type

 

Indoor

Power Rating

MVA

Up to 30MVA

Number of Phases

 

3

Rated Voltage, Phase to Phase

High Voltage Winding

kV

33/11/customer requirement

Low Voltage Winding

V

11/415/240 customer requirement

Rated Frequency

Hz

50

Rated Insulation Level

Impulse Withstand, Full Wave

High Voltage Winding

kV

As per IEC 60076-13

Low Voltage Winding

kV

Neutral Side

 

Fully insulated

AC Withstand Voltage

High Voltage Winding

kV

As per IEC 60076-13

Low Voltage Winding

kV

 

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