S11-M-20/30~2500kVA Three Phase Double Winding 20kv Distribution Transformers Power Transformer

20kv three phase double winding distribution transformer with off load tap
changer

Introduction:

It adopts advanced electromagnetic design software,and meets IEC60076,GB1094,GB/T6451,GB/T25289-2010 standards,without such 

device like conservator,air breather…,so it ensures that the transformer oil is not in contact with air,improving the anti-oxidation capacity of 

the transformer oil and delaying its aging. the core is made of high quality cold-rolled grain-oriented silicon steel sheet,with laminated 

structure miter joint,so as to reduce the no-load losses and no-load current. the tank is a corrugated type,the corrugated fins can swell and

shrink with the change of transformer oil,so that the pressure can be maintained inside the tank,increase its reliablility and anti-corrosion 

capacity.the coil of distribution transformer,wound by high intensity enameled wrapped conductors with good ampere-turn balance and 

reasonable insulation structure. has a strong short-circuit withstand capacity.the distribution transformer adopts the free-untanking structure.

with sealing material parts made of high quality acrylic rubber,it can effectively prevent againest ligh-aging and heat-aging.

Technical parameters:

Capacity: 30~2500kva 

Voltage :20± 5% or ± 2×2.5%  LV:0.4KV 

Vender group:Yyn0 or Dyn11

Impedance:5.5%, 6%

the loss value also apply to high voltage double voltage 20(10) three phase transformers.

Our Best Service For You

1. Pre sale service

A. Make technical solution

B. Send quotation, technical data sheet and drawing

C. Prepare power transmission plan, testing plan,and shipment plan

2. In sale service

A. Supervise the manufacturing schedule totally in accordance with the plan

B. Send photos to customer during every manufacturing process(hold point)

C. Inform the customer one week before testinng.

3. After sale service

A. Installation and commissioning, training the workers

B. Quick response within 12 hours any time

C. Provide 12 months gurantee period normally.

Order Instructions

When you choose our company product, please offer following data:

Transformer model:                     

Rated capacity:                     kVA

Phase       :    Three-phase

• Single-phase

Frequency   :     50HZ

•  60HZ

Rated voltage ( H.V. / L.V. ):                

Tapping range: ±       ×       %

Insulation level: LI       AC       / LI       AC        kv

Veotor group:  Dyn11

             Yyno

             Other

Short-circuit Impedance:        %

Cooling method:  ONAN

                ONAF

Tapping method:  OLTC

                OCTC

                Other

Other requirement:                                            

Notes:

1. We also can design special products according to customer’s particular requirements.
2. The final dimension is subject to outline drawing.

Thanks for choosing VILLE as your reliable partner and please trust both

of us will create a brilliant future!
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