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Oil-immersed Distribution Transformer
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Oil-immersed Distribution Transformer

Oil-immersed Distribution Transformer

Oil-immersed distribution transformers are important equipment in the distribution network and power supply and distribution systems of industrial & mining enterprise. It has the advantages of compact structure, beautiful appearance,small size,low noise,and strong overload capacity.

Transpower Electrical Equipment Co., Ltd. is one of the most reliable manufacturers and suppliers of oil-immersed distribution transformer in China. Welcome to buy high quality customized products at competitive price from our factory. Contact us for quotation.

 

Oil-Immersed Distribution Transformer

 

Oil-immersed Distribution Transformer Description

 

Oil-immersed distribution transformers are important equipment in the distribution network and power supply and distribution systems of industrial & mining enterprise. It has the advantages of compact structure, beautiful appearance,small size,low noise,and strong overload capacity.

Oi-immersed distribution transformer has hermetically sealed type and conservator type, the transformer is applicable to plant, mine,petrol chemical and other power distribution system of 10KV class for industy and agriculture. They are also popular in sites with oil contamination and chemical substances.

Single Phase Distribution Transformer:Ideal for lower capacity applications like residential complexes, commercial buildings etc. Common ratings are 10 kVA, 25 kVA, 63kVA.

Three-Phase Distribution Transformer:Used for higher capacities in industrial setups, large residential complexes etc. Some common ratings for three-phase distribution transformers are 25kVA, 40kVA, 63kVA, 100kVA, 160kVA, 200kVA, 315kVA, 500kVA etc.

 

Pad-mounted transformer

 

Power Rating

45kVA~6000kVA

Primary Voltage Ratings

up to 35kV

Secondary Voltage Ratings

up to 24.94kV

H.V. Tap Range

±2×2.5% or others

Connection Type

Delta/Wye

Winding Conductor

Copper or Aluminum

TYPE

Loop feed / Radial feed

Configuration

Live front / dead front

BIL

30-150kV

Standards

ANSI, IEEE, DOE, CSA, NEMA, UL

Application

Residential Areas, Hotels, Single Family Houses, Parks, Distribution Systems

Oil Type

Mineral Oil or Biodegradable Natural Vegetable Oil, Non PCB Fluid

Finish Color

Bell Green

Enclosure Rating

NEMA 3R Weatherproof Wiring Cabinet, Sealed Tank

 

Pole Mounted Transformer

 

Key attributes

Industry-specific attributes

Product

Single Phase Oil Filled Pole Mounted Transformer

Phase

Single

Coil Number

Autotransformer

Other attributes

Place of Origin

Zhejiang, China

Model Number

Single phase transformer

Rated capacity

From 10kva to 333kva

High Voltage

34.5kV and below

Low Voltage

120/240/277/480V

Frequency

50/60Hz

Standard

IEC, ANSI, IEEE, CSA

Vector group

Ii0, Ii6

Material

Aluminum/Copper

Application

Rural power grid, Remote mountainous areas, scattered villages, Agricultural production, lighting, Power consumption, Railway, Urban power grid

Type

Oil-immersed Transformer

Feature

Low Loss

 

The following table is the standard parameter of the conventional pole mounted transformer.

CAPACITY

(kVA)

η(%)

ε(%)

Io(%)

CORE LOSS

(W)

COPPER LOSS

(W)

DIMENSION(MM)

OIL (L)

TOTAL W.T

(kg)

W

D

H

10

97.2

3

1.9

45

180

440

520

940

30

100

15

97.3

3

1.8

58

215

450

530

970

30

130

25

97.5

2.8

1.7

82

295

500

580

980

40

180

37.5

97.7

2.6

1.6

110

400

520

600

1000

40

220

50

98.1

1.9

1.5

140

490

540

630

1060

45

280

75

98.2

1.8

1.4

200

700

590

670

1100

55

380

100

98.3

1.7

1.3

260

900

680

680

1120

60

450

167

98.4

1.6

1.2

450

1500

710

800

1190

80

580

250

98.5

1.5

1.1

650

2250

980

950

1350

215

980

333

98.6

1.4

1

800

3000

1040

960

1400

240

1100

 

Test Item

√ Winding Resistance Test

√ Insulation Resistance Test

√ Voltage Ratio Error Test

√ Short-circuit Impedance Test

√ No-load Loss (Wattage) Test

√ Load Loss (Wattage) Test

√ Induced Voltage Withstand Test

√ Separate Source Voltage Withstand Test

√ Pressure Integrity Test Test

product-1157-833

product-1082-777

 

Distribution Transformer Pictures

 

product-750-560
product-750-560
product-750-560
product-750-560
product-750-560
 

 

Distribution Transformer Packaging

 

product-750-560
product-750-558

 

Frequently Asked Questions (FAQ)

 

Q: What is the distribution transformer?

A: A distribution transformer or service transformer is a transformer that provides a final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customer.

Q: What is the difference between power transfer and distribution transformer?

A: While power transformers are designed to step up or down voltage levels for transmission purposes, distribution transformers are made specifically to provide stepped-down voltages to consumers. There are various distribution transformers available on the market, each with its advantages and disadvantages.

Q: What are the two main types of distribution transformer types?

A: Dry type: Uses air as cooling and insulation medium, commonly used for commercial or light industrial applications. Liquid-filled: Uses oil as cooling and insulation medium, commonly used for residential service, pole‐mounted for overhead feeders, pad‐mounted or underground for underground feeders.

 

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