6. Protections for high-power induction motors
6.1 Review of motor power supply principles
6.1.1 Principle of power supply from distribution boards
-
Whether used in a power generation plant or in industry, motors are generally supplied by electrical switchboards. The most powerful motors, typically those with a rated power of a few hundred kW or more, are supplied by switchboards with a rated voltage generally in the HTA (High Voltage A) range, from 3 kV to 10 kV, and exceptionally even higher. A typical example is the 6.6 kV voltage...
The Ultimate Scientific and Technical Reference
This article is included in
Conversion of electrical energy
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Protections for high-power induction motors
Protection for synchronous motors and small motors
Bibliography
Standards and norms
International Electrotechnical Commission (IEC) standards
- Rotating electrical machines – Part 1: Rated characteristics and operating characteristics. - IEC 60034-1 - 2022
- Isolation coordination – Part 1: definitions, principles and rules. - NF EN IEC 60071-1 - 2019
- Relais de mesure et dispositifs de protection (plusieurs dates d'édition selon les parties). - IEC 60255 -
- Analyse des modes...
Regulations
European Commission Regulation 2016/631 of April 14, 2016 establishing a network code on requirements for the connection of electricity generating installations to the grid.
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
You can refer to the websites of the manufacturers of protection systems, for example :
ABB – GENERAL ELECTRIC – ICE Protection & Control – MICROENER – MITSUBISHI – SCHNEIDER ELECTRIC – SIEMENS – TOSHIBA
The Ultimate Scientific and Technical Reference
