KS9 Oil Immersed miningTransformer

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

REFERENCES

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.