35KV 4MVA Distribution Transformer , Low Noise Power Supply

35KV 4MVA Distribution Transformer , Low Noise Power Supply Transformer

Quick Detail:

1.Low loss, low noise

2.Low partial discharge

3.High quality, efficiency

4.Safe use

5.Power transformer

Description:

O The 35KV transformers are in accordance with IEC 60076 and National Standards GB1094 Power Transformers and GB/T6451 Technical Specifications and Requirements for Three Phase Oil-immersed Power Transformers. The voltage regulation range is 5±3×2.5% kV for 35 kV class. Voltage regulation is effected by adj- usting the on-load tap changer on the high voltage side. Adjustment can be made manually or motor-operated, the output voltage on the secondary side at a required stable level. Therefore they are widely used in places where requirement of voltage quality is emphasized, such as institutes, building, hotels, hospital and factories. These transformers are new products and have better economy in operation .

1. Low loss, and significantly energy-saving. The average no-load loss is 35% lower than prescribed by National Standard GB/T 6451-2008.

2. The core laminations are made up from high-quality cold-rolled grain-oriented silicon steel sheets with chamfered joints and without punched holes, and are stacked without the upper yoke sheets in place, so that they are effectively improved no-load upper together with lower frame.

3. Zigzag directed flow of oil are provided within the windings, so that all parts of the windings can be cooled more evenly.

4. The regulating winding is a separate winding which apart from the high voltage main winding.

5. The windings of one phase are assembled into an integral phase block before placing into the core.

6. The winding manufacture, winding assembly core and winding assembly work are all proceed in totally closed clean department.

7. Core frames in the form of a flat plate are used for clamping the core, and are joined together by side beams.

8. Transformer tanks are fabricated with steel plates wide enough so that there are no weld joints on each surface.

9. Diaphragm membrane is provided within the conservator, preventing direct contact of oil with air, protecting the oil from aging.

10. Reliably sealed, and fine machined for sealed surface. Used double gasket grooves in their jointing surface and kept tight with high quality gasket material.

11. High quality paint is applied as surface finish of the tank and exposed steel parts, after shot-blasting and pretreatment, thus ensuring a durable life and glossy surface.

12. Quality assurance rules are also observed for all insulating parts, from raw material to final assembly.

Technical Parameter Specifications:

Rated Voltage	35KV
Rated Capacity	4000KVA
Cooling Type	ONAN/ONAF
Winding Type	Double winding / Three winding / Toroidal
Phase	Three Phase / Single Phase
Type	Core Type / Shell Type
Winding Material	Copper
Frequency	50HZ / 60HZ

Type	Voltage (kV)	Connection Symbol	No-load Loss (KW)	Load Loss (KW)	No-load current	Short-circuit Impedance (%)	Weight (t)		(mm)
							Oil	Total	L	W	H
S9-3150/35	35/38.5	±5% L.V: 3.15 6.3 10.5	1.25	9.90	1.25	7.0	2150	8750	2800	2890	2730
S9-4000/35			1.49	12.15	1.49		2235	9630	2870	2990	2780
S9-5000/35			1.76	14.67	1.76		2900	11500	3170	3500	3000
S9-6300/35			2.13	17.55	2.13		3800	13900	3200	3550	3200

Applications:

Applied in residential buildings, business center, shopping center, small factories and so on.

A . Transformers application:

B . Production process:

C . Production Equipments:

D . Packing and Delivery Processing:

E . Quality Certificates:

F . Team Work:

G . FAQ About Transformers:

Q: 1. Are transformers apply with Internation Standrad?

A: Yes, all our product are strictly apply with IEC,IS,ANSI,GB or any other special requirements as customers.

Q: 2. What is the lead time?

A:Generally for one lot transformers within 60-90 days.

Q: 3. How do transformers been shipped?

A: Transformers always been deliveried by ship,train or truck for oversea.Which with main active body in bulk and accessories in wooden cases.

Q: 4. What kind of internation certificates do you have?

A: We have authoried KEMA,ISO and SGS.

Q: 5. What is your production ability for last year?

A: Last year our production ability reach 50 million KVA,and increased every year.

Q: 6. Do you offer guarantee for the products?

A: Yes, we offer at least one year guarantee for all of our transformers.

Q: 8. Do you accept FAT(Factory Acceptance Test)?

A: Yes, it’s available.Welcomed.We are responsible for each set transformer’s testing.

Q: 9. Do you assign engineer for after-sale service?

A: Yes,for our products,we all show after-sale guide installation and questions inquiry.