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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: JSM
  • Model Number: S9-33/11KV-3150KVA
  • Usage: Power
  • Phase: Three
  • Coil Structure: Toroidal
  • Coil Number: three phase duplex winding
  • Frequency:: 50HZ /60HZ
  • Standard:: IEC60076
  • Connection group:: Dyn11, Yyn0, Ynd11, or others
  • Cooling:: ONAN/ ONAF/ OFAF

Packaging & Delivery

Packaging Details 1. Conventional packaging
a. Wooden box
b. Iron shelf
2. Special packaging: According to customer's requirement
Delivery Time 3~ 20 days


 About Our Transformer:




1. Rated voltage:   6.3kV,10kV,11kV,13.2kV,13.8kV,15kV, 20KV, 22KV, 33KV,35KV


2. Rated power:  5kva ~ 25000kva


3. Stardard:       IEC60076,GB1094-1996 


4. Frequency:      50HZ /60HZ


5. Vector group:    Dyn11, Yyn0, Ynd11, or others


6. Cooling:        ONAN/ ONAF/ OFAF


7. Tap changer:    3 levels; 5 levels; 7 levels; 13 levels; 17 levels


8. Rating plate::  Yes (JSM brand or Customer brand)


9. Corrugated refrigeration panels: Yes ( Four sides of the transformer shell)


10. Parts:         1)Oil draining valve 2)Oil level indicator 3)Thermometer 






About Our Company:




1.  25 years' manufacturing experience with three subsidiaries


2.  Won tenders aboard


3.  IEC 60076 & ISO certificate


4.  OEM / ODM


5.  Competitive price with 100% Cu winding


6.  Production capacity: 10,000,000 kVA per year






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.
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.


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China (Mainland) | Manufacturer, Trading Company
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