1. 0.4 to 10 KV Step Up three phase oil immersed electric power industrial transformer
0.4 to10kv step up three phase oil immersed Power transformer is rated voltage during 6-35kV, oil immersed transformer are most used in power plant,power grid transmission and distribution station,industry& commerce electrical substation as the electrical equipment of power transmission,
(1),Natural cooling or force air or oil cooling,
(2),Two windings or three windings
(3),On-load or no-load voltage tapping changer
(4),capacity range 10-5000kVA
2. Parameter list
Yyn0 or Dyn11
Rated voltage H. V
11, 10.5, 10, 6.3, 6KV (or customized)
Rated voltage L.V
0.4, 0.69KV (or customized)
+/- 5% or +/- 2 * 2.5% (or customized)
Temperature rise limits
Winding ≤ 65K, Top oil ≤ 60K
Highest ambient temperature
IEC60076 & GB1094 and GB/T6451
3. Product standard
ISO 1461: Hot dip galvanized coatings on fabricated iron and steel articles – Specifications and test methods.
IEC 60076: Power transformers.
IEC 60044: Instrument transformers.
IEC 60296: Specification for unused mineral insulating oil for transformers and switchgear.
IEC 60354: Loading guide for oil – immersed power transformers.
IEC 60214: Tap-changers - Part 1: Performance requirements and test methods, Part 2: Application guide.
IEC 60512: Connectors for electronic equipment.
4. Routine test
ROUTINE TEST to IEC 60076 (to be done during acceptance testing at factory)
• Measurement of winding resistance
• Ratio test
• Vector group
• Separate source voltage withstand test
• Induced over-voltage
• Insulation resistance
• Oil leakage test on fully assembled transformer for 12 hours
• Measurement of impedance voltage
• Magnetic balance
• Measurement of no-load loss and current
• Measurement of load loss (at normal & extreme taps)
• Tests on on-load tap-changer
• Tests on on-load tap-changer remote control panel
• Efficiency at 50%, 75%, 100% loading at unity p.f and rated terminal voltage (Corrected to 75C)
• Lightning impulse withstand test
Type Tests to IEC 60076 (to be done during acceptance testing at factory)
• Temperature rise test – To be performed on one unit during acceptance testing.
• Lightning Impulse Withstand Test is already listed under Routine Tests as per IEC 60076.
5. Factory show
A: Send the inquiry with your technical data or tell me your application. We can make recommendation.
(2). What is lead time and shipment?
A: Shipment term is FOB, CIF,DDU, DDP, CIP. Lead time of products is 3-10 days, if special need, L/T is discussed case by case.
(3).How to pay?
A: By T/T, L/C, cash, PayPal, western union, D/P, D/A and others available
(4).What is Warranty?
A: At least two years promise, some products can extend longer.
7. Contact us
XIGAO Electricenergy Group Co.,LTD.
Add.: No. 6, Weibei Industrial Park, Xi'an City, Shaanxi Pro., CN. 710600
Phone: 0086 13319220197