Oil Cooled Distribution
Transformers
Optional Features & Accessories
Overview
Prolec GE offers a complete line of oil cooled three-phase
distribution transformers that meet applicable IS / IEC®/
ANSI® / IEEE® standards. With high voltages up to 33kV
and ratings up to 3150 kVA, transformers are designed
for outdoors covering domestic, commercial and industrial
applications. High-grade materials, combined with
sophisticated engineering design systems and state of
the art test infrastructure are key elements of a transformer
that will deliver years of highly reliable service
• Design can meet any stringent specifications.
• Offering low losses as per request.
• Capacity to execute large volume orders.
• 55˚C 55/65˚C average winding rise.
• On load tap changer and RTCC with provision for
automatic tap changing
• High-fire point fluid
• Removable radiators.
• Galvanized steel removable radiators.
• Pressure relief device.
• Winding temperature device.
• Sudden pressure relay with or without seal in.
• HV & LV air terminal compartments.
• HV lightning arresters.
• Drain / filter valve with sampling device.
• Magnetic oil level gauge
• Bi-directional rollers
• Air cell type conservator
• Current transformers.
• Neutral grounding resistor.
• Special impedances.
• Low losses.
• Special paint for marine ambient.
• Special paint thickness.
• Special colours.
• Other special features upon request.
Tests
Each transformer receives all standard commercial tests
in accordance with IS/IEC (Latest revision), with test reports
available by serial number of the transformer.
Standard Features
• 50/60 Hertz operation.
• 55˚C average winding rise.
• Externally operated de-energized tap changer with (2)
2.5% full capacity taps above and below nominal.
• Side-mounted bushings.
• HV and LV flange connections.
• Insulating mineral oil.
• Top filter press valve provision.
• Liquid level gauge.
• Liquid temperature gauge.
• Silicagel breather
• Explosion vent
• Gas and oil relay (above 500 kVA)
• Grounding pad.
• Drain / filter valve.
• Tank lifting lugs suitable for lifting complete transformer
with oil.
• Corrosion resistant nameplate.
• Enamel paint finish, 80 microns thickness.
IS is a registered trademark of Bureau of Indian Standards
IEC is a registered trademark of International Electro technical Commission
IEEE is a registered trademark of the Institute of Electrical Electronics
Engineers, Inc.
ANSI is a registered trademark of American National Standards Institute,
Incorporated.
Conservator
Explosion vent
HV bushings
LV cable box
Air release plug
Thermometer
Lifting lugs
Filter valve
Radiator
Jacking pad
Single window
Marshalling box
Bi-directional roller
Earthing pad
Note: According to product specification the accessories may very.
Routine tests include
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Resistance tests of all windings.
Ratio tests on the rated voltage and all tap connections.
Polarity and phase relation tests at rated voltage.
No load loss at rated voltage.
Exciting current at rated voltage.
Impedance and load losses.
Applied voltage test.
Induced voltage test.
Full wave impulse test.
Type test & special tests as per national or international
standards (on request).
Standard kVA Ratings
100
200
315
500
630
750
1000
1500
1600
2000
2500
3150
5000
Standard Primary
Voltage Ratings
415
690
6600
7200
11000
22000
33000
For more information contact:
GE Energy, Building No 7A,4th Floor DLF Cyber City, DLF Phase III, Sector 25A ,+91-124-4808000
Indo Tech Transformers, DP36 SIDCO Industrial Estate, Thirumazhisai, Chennai, +91- 44 – 30289833
PGE-IN-OCDTTR-1210-01