Juchen Electrical Technology Co., Ltd.
Juchen Electrical Technology Co., Ltd.
Products
400KVA Cast Resin Transformer
  • 400KVA Cast Resin Transformer400KVA Cast Resin Transformer
  • 400KVA Cast Resin Transformer400KVA Cast Resin Transformer

400KVA Cast Resin Transformer

China JUCEG factory specializing in high-volume production with strict ISO quality control, offering OEM/ODM services.400KVA Cast Resin Transformer is a dry-type transformer with a rated capacity of 400KVA, which is manufactured using the epoxy resin casting process. It is widely used in places with high requirements for fire prevention, explosion protection, and moisture resistance.

Factory-direct 400KVA Cast Resin Transformer wholesale – 50% off bulk orders.The winding is completely encapsulated in epoxy resin using the epoxy resin casting process, forming a dense insulation layer with extremely high insulation strength. This can effectively prevent electrical breakdown and local discharge. The dielectric loss tangent value (tanδ) of the epoxy resin is extremely low, reducing energy loss and improving the efficiency of the transformer. The epoxy resin cast after pouring forms a high-strength fiberglass reinforced plastic structure, which can withstand short-circuit current impact, mechanical vibration, and collisions during transportation, protecting the winding from damage. 400KVA Cast Resin Transformer has good anti-cracking performance, and can maintain structural integrity even in environments with large temperature variations, preventing insulation layer cracking and resulting insulation failure. The casting process completely seals the winding in the epoxy resin, effectively preventing moisture, dust, and corrosive gases from entering, and prolonging the service life of the transformer. It is suitable for corrosive environments such as chemical and metallurgical industries, as well as coastal areas with high humidity or underground locations.

400KVA Cast Resin Transformer


Transformer Type

Resin Cast Dry Type

Model

SCB10-50/10

Number of Phase

Three Phase

Winding Type

Two Winding

Winding Material

Aluminum/Copper

Rated Capacity

50kVA

High Voltage

10/11kV

Low Voltage

0.4kV

Tapping Range

±2x2.5%

Impedance Voltage

4%

Load Loss (120°C)

1kW

No-load Loss

0.27kW

No-load Current

2%

Frequency

50/60Hz

Connection Group

Yyn0/Dyn11

Cooling Method

ANAF

Insulation Class

F

Thermal Class

F1

Protection Level

IP00/IP20/IP30

Climatic Class

C2

Environmental Class

E2

Temperature Rise

100K

Operation Altitude

≤1000m

Size

950x750x915mm

Weight

575kg

400KVA Cast Resin Transformer



1.H-Grade Insulation

SG10 Series power transformers use great material and new technology to achieve H-grade insulation, it is reliably used in ambient temperature up to 180ºCand the main part of the transformer can sustain up to 220ºC.

2.Safety

SG10 series power transformers use insulated materials which is flame retardant and moisture-proof, the combustible material is only 10% of the epoxy resin transformer. There's no poisonous fumes during long time burning at 800ºC.

3.Reliable

SG10 series power transformers use special coil design and technology to achieve moisture-proof, mould proof and fame proof. It can sustain high thermal shock without partial discharge.

4.Strong over-load ability

SG10 series power transformer can sustain 120% rated capacity. It can longtime running under IP23 without force air cooling.

400KVA Cast Resin Transformer


Technical Specification

Technical Data for 35KV Class Three Phase Epoxy-resin Dry-type Transformer

Rated Power

(KVA)

High Voltage

(KV)

Low Voltage

(KV)

Connection

Symbol

On-load Loss

(W)

No-Load Current

(%)

50

20

22

24

or others

0.4

Dyn11

YNyn0

1300

2.4

100

2100

2.2

160

2600

1.8

200

3100

1.8

250

3600

1.6

315

4300

1.6

400

5100

1.4

500

6100

1.4

630

7200

1.2

800

8700

1.2

1000

10300

1.0

1250

12150

0.9

1600

14600

0.9

2000

17250

0.8

2500

20400

0.8

5000

35800

0.7


Technical Data for 20KV Class Three Phase Epoxy-resin Dry-type Transformer

Rated Power

(KVA)

High Voltage

(KV)

Low Voltage

(KV)

Connection

Symbol

On-load Loss

(W)

No-Load Current

(%)

50

20

22

24

or others

0.4

Dyn11

YNyn0

1300

2.4

100

2100

2.2

160

2600

1.8

200

3100

1.8

250

3600

1.6

315

4300

1.6

400

5100

1.4

500

6100

1.4

630

7200

1.2

800

8700

1.2

1000

10300

1.0

1250

12150

0.9

1600

14600

0.9

2000

17250

0.8

2500

20400

0.8

5000

35800

0.7


Technical Data for 10KV Class Three Phase Epoxy-resin Dry-type Transformer

Rated Power 

(KVA)

High Voltage

(KV)

Low Voltage

(KV)

Connection

Symbol

On-load Loss

(W)

No-Load Current

(%)

50

6

6.3

6.6

10

10.5

11

13.2

or others

0.4

Dyn11

YNyn0

990

2

100

1570

1.8

160

2120

1.4

200

2520

1.4

250

2750

1.4

315

3460

1.2

400

3980

1.2

500

4880

1.2

630

5870

1

800

6950

1

1000

8120

0.8

1250

9690

0.8

1600

11730

0.8

2000

14450

0.6

2500

17170

0.6

5000

34600

0.5


Selection Considerations

1. Select the appropriate rated capacity based on the actual load conditions, taking into account the demand for future load growth. The rated capacity of 400KVA Cast Resin Transformer should be equal to or greater than the rated capacity of the load to handle current requirements and consider future expansion.

2. Confirm the altitude, environmental temperature, humidity and other conditions of the installation location of 400KVA Cast Resin Transformer. If necessary, select specially designed transformers.

For outdoor transformers, choose products with higher protection grades to cope with various complex weather conditions.

3. Based on the installation space and protection requirements, select the appropriate protection level and cooling method.

For locations with limited space, a transformer with a small size and light weight should be chosen to facilitate installation and maintenance.

4. Confirm the rated voltage and voltage fluctuation range of the system, and select the corresponding voltage levels for the high and low sides.

The rated voltage of the transformer should be equal to or greater than the rated voltage of the system to ensure stable power transmission.

5. Based on the system grounding method and load characteristics, select the appropriate connection group.

Common connection groups include Dyn11, Yyn0, etc. You can choose according to your actual needs.


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