Longer Life Cycle 220 KV Power Transformer , Electric Oil Immersed Power Transformer

Basic Information
Place of Origin: China
Brand Name: Pearl Electric
Certification: IEC60076-11 ISO9001 ISO14001 KEMA CE
Model Number: SFSZ11-25 MVA 220 KV
Minimum Order Quantity: negotiation
Price: Negotiation
Packaging Details: Wooden Package, suitable for 20'/40' container
Delivery Time: 60-90days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 50-100 sets/ year
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Name: 220 KV Power Transformer Feature: Longer Life Cycle
Reference Standards: IEC60076 Cooling Method: ONAN/ONAF/OFAF
Key Word: 110-220 Power Transformer Other Name: Oil Immersed Power Transformer
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Longer Life Cycle 220 KV Power Transformer , Electric Oil Immersed Power Transformer


220 KV Power Transformer Application


The 220 KV Power Transformer has been widely applied in new and reconstruction projects of urban and rural power grids. Mass deployment of the products may achieve good energy-saving effects and reduce the atmospheric pollution. The product is especially suitable for the areas where the electric energy is insufficient, the load fluctuation is big and the daily maintenance is difficult. As the transformer adopts fully sealed structure and avoids contact with the air, it may run in the humid environment and is the ideal power distribution equipment for urban and rural power distribution network.


220 KV Power Transformer Characteristics

  1. To produce correct and complete engineering documentation.by three dimension design software
  2. To increase winding short circuit strength by hydrant pressing technology
  3. To reduce noise level by core hydrant pressing technology
  4. Adopting High quality seals and special design to prevent oil leakage
  5. Performing lightening impulse test before delivering.

Technical Specification


Type Rated Capcity Rated Voltage Connection Symbol No-load loss load loss no-load current Impedance voltage
KVA H.V(KV) L.V (KV) KW KW (%) (%)
s11-6300/110 6300 110+/-2*2.5%

YNd11 7.4 34 0.5 10
s11-8000/110 8000 8.9 42 0.5
s11-10000/110 10000 10.5 50 0.5
s11-12500/110 12500 12.4 60 0.4
s11-16000/110 16000 15 74 0.35
s11-20000/110 20000 17.6 88 0.35
s11-25000/110 25000 20.8 105 0.3
s11-31500/110 31500 24.6 126 0.3
s11-40000/110 40000 29.4 148 0.3
s11-50000/110 50000 35.2 184 0.3
s11-63000/110 63000 41.6 222 0.3
s11-75000/110 75000 13.8
47.2 264 0.3 12-14
s11-90000/110 90000 54.4 304 0.3

Oil sampling and testing (also refer ESKASAAF1)


a) Units with a highest voltage of 40 kV and above


One sample is required in each of the following cases:


1) during testing in the factory:


a particle test shall be performed before and after each filling of the transformer for factory testing. The particle count in oil shall be less that 1000/10ml for particles less than 2μm.


2) at time of take over:


all units delivered to site without oil, at least 7 days after in-situ oil processing has been completed, to test for dielectric strength, dissolved gas analysis (DGA), and acidity (A), but with the main emphasis on water content. Samples taken sooner will not necessarily reflect the correct water content (WC). Sample to be taken according to ESKASAAF1;


3) 2 days after energizing, to test for DS, WC, and DGA (Eskom responsibility);


4) after the 1st, 3rd and 6th month from date of energizing for DS, WC and DGA (Eskom responsibility);


5) thereafter, routinely for DS, WC, DGA and A as follows (Eskom responsibility):40KV-132KV

— power transformers of between 40 kV and 132 kV: - annually.


b) Units with highest voltages below 40 kV


Routine oil sampling and DGA of transformers in this group is normally not required, but this will be done at the discretion of the user (i.e. sampled on a “need only” basis). However, one sample to test for DS and WC, is required for acceptance purposes; before despatch from the manufacturer, or before commissioning on site. Records of the oil sample results shall be kept for future reference purposes.


c) On-load tap-changer diverter switches (all voltage categories)

Contact Details

Phone Number : 86-020-22626603

WhatsApp : +008618826241798