IEC/EN 62271-211 — Direct connection between power transformers and GIS
Direct transformer–GIS connections. Critical for compact HV substation layouts.
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Products — switchgear & transformers
IEC/IEEE 62271, 60076, 61439, 60947, C37, C57, DER/BESS product and listing standards.
IEEE C37.20.2 — Metal-clad switchgear (US)
US metal-clad switchgear construction standard. North American MV gear procurement baseline.
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IEEE C37.20.3 — Metal-enclosed interrupter switchgear
US metal-enclosed interrupter switchgear standard for load-interrupter designs.
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IEEE C37.04 / C37.06 / C37.09 — HV circuit breaker ratings & tests set
North American HV circuit-breaker ratings, preferred ratings and test procedures set.
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IEC/EN 60076-1 — Power transformers — General
General requirements for power transformers. Global transformer specification starting point.
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IEC/EN 60076-2 — Temperature rise for liquid-immersed transformers
Temperature-rise requirements for liquid-immersed transformers. Cooling classes and thermal performance.
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IEC/EN 60076-3 — Insulation levels, dielectric tests
Insulation levels and dielectric tests for power transformers. BIL/AC withstand specification.
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IEC/EN 60076-5 — Ability to withstand short circuit
Short-circuit withstand capability of transformers. Mechanical/thermal short-circuit design verification.
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IEC/EN 60076-7 — Loading guide for mineral-oil-immersed transformers
Loading guide for mineral-oil-immersed power transformers. Operational overload capability.
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IEC/EN 60076-11 — Dry-type transformers
Dry-type power transformers. Indoor substations, commercial buildings and industrial plants.
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