Product Description

Various Ratings Types and Styles Electrical Distribution Transformers for 33 kV Substation 

 1. Application

1). Our power transformers are especially suitable for installation in draw-out type or fixing type switchgears as well as for power plants, substation, self-consumption transformers, power distribution, transmitter system, earthing system, community power supply system, subway, or those places where small space, fire-control, moisture-proof, are needed. Those up to 10kV can be installed in 650 ~ 1200 mm wide switchgear, up to 20kV in a 1000mm wide switchgear and 35kV in 1400 ~ 1600 mm wide switchgear.

2).Our series reactors are suitable for a power system of 6~10kV.They are connected serially with high voltage parallel capacitor group to depress a wave deformation in the system.

2.Technical Parameters

1).Rated Primary Voltage: 6kV up to 35kV

2).Rated Secondary Voltage: 0.4kV

3).Rated Capacity: 3kVA up to 2500kVA

4).Rated Short-time P. F. Withstand Voltage (r.m.s.) (kV): 20, 25, 35, 50, 70

5).Rated Lightning Impulse Withstand Voltage (Peak) (kV): 60, 75, 125, 170

6).Phase No.: single phase or three phases

7).The Highest Temperature Rise of Windings: 100K

8).Insulation Class: F

9).Cooling Mode: AN or FN

10).Enclosure Protection: IP00, IP20 or custom specified

11).Connection Symbol: Yyn0, Dyn11or II0 or custom specified

12).HV Tapping Range (%): ±5 or ±2×2.5

3. Main Features

1).Low loss, low noise, high operation efficiency
2).High ability of protection against short circuit

3).High mechanical strength   
4).Pre-galvanized steel frame, flame-resistant, against corrosion

5).With outstanding fire-proof capability: the epoxy resin is difficult to flame and self-extinguished. So it won’t lead to the second disasters, such as an explosion.

6).Cast epoxy resin with high dielectric strength 18~22kV/mm in vacuum process

7).Superior in environmental performance: the epoxy resin is very stable, moisture-proof and dust-proof. It enables dry-type power transformers to run with high reliability under abominable environment.

8) With theimpeccable temperature control and indicating system, dry-type power transformers can be maintenance free. And this offers a great reduction of operation cost.

9).With small volume, light and convenient for installation and alignment

10).No need of a separated room

4. Materials

1).Insulation Material: epoxy resin

2).Winding Material: Aluminum wire or high quality enameled copper wire (foil winding is available for power transformer)

3).Core: core lamination, low loss, cold rolled grain oriented silicon steel

5 Technical Parameters for SC(9~11)-6~35(IV) power transformers see Table 1

Various Ratings Types and Styles Electrical Distribution Transformers for 33 kV Substation 

Table 1

The highest temperature rise of windings: 100K, insulation class: F, cooling mode: AN. * Clients also can appoint a connection symbol different from that mentioned in the table above and declare it when ordering.

Notes:

1 The technical data is one part of the whole because of shorting of place to present.

2 Detailed Technical data and outline drawing are provided upon request.

Packaging & Shipping

Various Ratings Types and Styles Electrical Distribution Transformers for 33 kV Substation 

All our goods are packed in wooden cases, with foam inside for protection. And we have a team who is in charge of packing. The team consists of our skilful carpenters and experienced packing designers. These enable our packing reasonable, safe and reliable.

Our Services

   Various Ratings Types and Styles Electrical Distribution Transformers for 33 kV Substation 

I. Before Sale

a. Contact with clients nearly to know their requirements exactly.

b. Express the requirements from the clients to relevant departments in quickness and exactitude.

II. During Sale

a. Ensure that the products delivered are certified (confirming to the standards of China and IEC).

b. Ensure that marks, handle, package, storage and protection are in accordance with the requirements of ISO 9001/ISO 14001 standards.

c.Transport the products to specified destination as per the contract.

III. After Sale

Our after- sales service is available anytime.

a. Three guarantees will be carried out on the products delivered (18 months quality guarantee). That is refund, replacement and repair.

b. Fittings supply shall be in time.

c. Response for the financial loss brought from the uncertified or services.

d. Product sample is available.

e. Product customization is welcome. We have professional team to meet your requirements.

FAQ

Various Ratings Types and Styles Electrical Distribution Transformers for 33 kV Substation 

 Payment terms: 30% deposit in advance and 70% balance paid before delivery or 100% L/C at sight

Minimum order: for high voltage products and power transformers: 1 piece;

             For medium voltage products: 3 pieces;

             For low voltage products and insulating articles: 10 pieces

Delivery time: 5~30 days after receive of order

Quotation Valid Date: 90 days

Transportation methods: By air or by sea, as requested

Various Ratings Types and Styles Electrical Distribution Transformers for 33 kV Substation