33KV 100KVA 200KVA 300KVA 400KVA 500KVA 550KV 800KVA 1000KVA 1500KVA масляный

1.Power Capacity: 100KVA                 (Our co.can make 30KVA Upto 20 MVA)

2.Voltage Level: 33/0.415 KV               (can be made as buyers requirements)

3.Type of Voltage Regulation: Off-circuit or On-Ioad

4.Tapping Range:  ±2x2.5 %              (can be made as buyers requirements)

5.Frequency: 50Hz or 60Hz

6.Phases: Three 

7.Connection Symbol: Dyn11 

8.Short- circuit Impedance:  Standard Impedance

9.Altiude is not exceeding 1000m,ambient temperature not exceeding 40OC. If it can't meet such conditions,we will modulate parameters in accordance with standard.

10.Copper windings, oil immersed type

11.cooling method: ONAN

1. Oxygen-free copper lines of lower resistivity, which will become smoother and burr-free after series of additional surface treatment, so the load loss of our transformer is lower and the electric performance is better.


2. High-quality silicon-steel plates which are of lower unit loss, and the no-load of the transformers is lower.


3. High-quality wooden laminating insulation pieces, which won’t split or move even under the influence of short circuit.


4. Thoroughly filtrated transformer oil containing less water, gas and impurities, which makes our transformers work better.


5. High-quality rubber sealing material, which can prevent the transformers form aging or leakage.

“BOERSTN ELECTRIC" is engaged in manufacturing,development,service ,solution,maintenance & marketing of H.V./L.V. power distribution equipments,switchgears,transformers,substations..etc .for all over the world. As a leading & professional manufacturer in China,we mainly manufacture below items and supply their electrical accessories:

·         H.V.& L.V.switchgears

·         Power Distribution Board (PDB)

·         M.V solid insulated switchgears (SIS)

·         compact substations /Package substation/kiosk substation

·         single phase & three phase pad mounted transformers(PMT)

·         Gas insulated switchgears(GIS)

·         Cable Brach box 

·         Ring main units (RMU)

·         Oil-immersed transformers and dry type transformers 

·         Vacuum circuit breakers (VCB),Air circuit breakers(ACB),vacuum switch and contactors.

1. Are you the manufacturer or trader?

Boerstn is a leading & professional manufacturer located in Zhejiang province of China.

2. What is your main markets?

Our main market is in home & a half in South-East Asia, Middle East,West-Africa, East-European countries & Some South America..etc

3. What is your delivery & after-sales serive?

The delivery is according to order qty, normally for containers order we need 1 month. Per each month 20 containers (20'ft or 40'ft)are no problem for us . We can answer user's question and solve their problem in 24 hrs per each day and give full technical support in time to all of our products.

4. What is your product warranty?

Firstly we have quality certificates like CCC, ISO9001..etc for our switchgears & power equipments ,have CE,Rohs,CB,TUV,Kema..for their electrical parts and accessories. Secondly we supply 1 year quality guarantee,during this period we supply free repair,maintenance and technical support.Certainly for some of switchgears and power equipments, their using life is over 20 years,no problem.

5.Do you accept OEM and ODM?

Yes.  Our R & D team owns latest technology ,can develop & produce products as customers' drawing & under their brand

6. What is your payment terms?

  a. 30% T/T in advance as deposit ,balanced against the shipping documents

  b. irrevocable L/C at sight for order which amount is over 100 thousand USD

  C. for old business partner,we can negociate together for other special terms

  d . For samples, we accept T/T,Western union, moneygram, paypal..etc

7. If i want to visit you ,how to do ?

 Our company is located in Yueqing city of Zhejiang province China,which is about 40 minutes by car to Wenzhou air port & 30 minutes from Yueqing train station. About 1 hrs by air from Shanghai international airport and 1 hrs from Ningbo by train. If you need invitation letter before come to China,we can give it to you.