Payment & Shipping Terms:
|Core:||Amorphors Alloy Steel Core||Cooling:||AN Or ANAF|
|Capacity:||10~2500KVA Or Customized||Rated H. V.:||20Kv Or Customized|
|Rated L. V.:||0.4kv Or Customized||Impedance:||4~8% Or Customized|
20kV - Class Cast Resin , Amorphors Alloy Transformer , Amorphors Alloy Core , Power Distribution
The following standards contain provisions which, though referenced in this text constitute
provisions of this specification. Unless otherwise stated, the latest editions (including
ISO 1461: Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and
IEC 60076-11: Dry-type transformers.
IEC 60076-12: Loading guide for dry-type power transformers.
IEC 60376:2005: Specification of technical grade sulfur hexafluoride (SF6) for use in electrical
IEC 60076: Power transformers, all parts
lEe 60296: Specification for unused mineral insulating oil for transformers and switchgear.
IEC 60214: Tap-changers - Part 1: Performance requirements and test methods, Part 2:
IEC 60512: Connectors for electronic equipment
BS 381C: Specification for colours for identification coding and special purposes
IEC 60529: Classification of Degrees of Protection provided by Enclosures
DIN 42500: Three-phase Oil immersed 50Hz distribution transformers from 50 to 2500kV A, Urn=24kV
INSPECTION AND TESTING
A representative appointed by the Purchaser may inspect the manufacture's plant.
Tests shall be performed in accordance with the relevant mc standards supplemented by the
specific requirements indicated below. In the absence of mc recommendations the tests must be
equivalent at least to the conditions, provisions and definitions of the above-mentioned standards.
Distribution transformer tests will be divided into the following categories:
(I) Routine Tests
Each transformer shall have the following tests performed on it.
• Measurement of winding resistance
• Measurement of voltage ratio and check of voltage vector relationship
• Measurement of impedance voltage, short-circuit impedance and load loss
• Measurement of no-load loss and current
• Dielectric tests
• Insulation oil test
(II) Type Tests and Special Tests
•Impulse voltage test
•Temperature rise test
• Acoustic sound level measurements
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