IEEE Std C37.06 — Preferred ratings for AC HV circuit breakers
Preferred ratings tables for HV AC circuit breakers. Spec writing baseline for US utility practice.
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Regulatory documentation
BS 7671, NEC, CEC, IEEE substation guides, IEC/EN 61936/50522, Grid/Distribution Codes practice.
IEEE Std C37.20.2 — Metal-clad switchgear
US standard for metal-clad switchgear. Construction, ratings, tests. Directly maps to MV switchgear procurement.
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IEEE Std C37.20.7 — Arc-resistant switchgear testing guide
Guide for testing metal-enclosed switchgear for internal arcing faults. Key for arc-resistant MV gear specifications.
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IEEE Std C57.12.00 — General requirements for liquid-immersed distribution, power transformers
General requirements for liquid-immersed transformers. Base standard for utility and industrial power transformers in North America.
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IEEE Std C57.12.01 — General requirements for dry-type transformers
General requirements for dry-type distribution and power transformers. Common for indoor installations.
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IEEE Std C57.91 — Loading guide for mineral-oil-immersed transformers
Loading guide for oil-immersed transformers. Hot-spot, ageing, emergency loading. Essential for operational planning.
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IEEE Std C57.104 — Dissolved gas analysis (DGA) interpretation
Guide for interpretation of gases dissolved in insulating oil. Most used transformer condition-monitoring standard.
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IEEE Std 519 — Harmonic Control in Electric Power Systems
Recommended practice for harmonic control. Current/voltage distortion limits. Extremely high demand for VFD, data centre and EV projects.
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CSA C22.1 — Canadian Electrical Code, Part I (latest edition)
Canadian Electrical Code Part I. Primary installation rules for Canada. Equivalent role to NEC/BS 7671 in Canadian practice.
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CSA C22.3 No. 1 — Overhead systems
Canadian standard for overhead electrical systems. Utility line design practice.
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