What is BS EN 62520 - Short-primary type linear induction motors (LIM) about?
BS EN 62520 is a European standard that discusses electric traction for railways. BS EN 62520 discusses short-primary type linear induction motors (LIM) for propelling rail and road vehicles.
BS EN 62520 provides a specific configuration of LIM that has the primary mounted on either the vehicle body or trucks and a secondary that is fixed to the track and that is connected only by a magnetic field with the primary.
The object of BS EN 62520 is to allow the performance of a LIM to be confirmed by tests and to provide a basis for assessment of its suitability for a specified duty.
The electrical input to LIMs covered by BS EN 62520 should come from an electronic converter.
Note: At the time of drafting, only the LIMs fed by voltage source converters had been used for traction applications, but it may also apply to other combinations which may be used in the future.
Who is BS EN 62520 - Short-primary type linear induction motors (LIM) for?
BS EN 62520 on short-primary type linear induction motors (LIM) is useful for:
- Manufacturers of linear induction motors (LIM)
- Test centres
- Regulatory authorities
Why should you use BS EN 62520 - Short-primary type linear induction motors (LIM)?
The linear induction motors (LIM) have a power factor and an electric efficiency substantially lower than those of rotary motors because their magnetic gap length is several times that of the rotary motors. As such, the assumption made for the rotary induction motor that the primary leakage reactance is significantly less than the mutual reactance is no longer valid.
BS EN 62520 guideline assists you with environmental conditions, characteristics, marking, test categories, type tests, temperature-rise tests, characteristic tests, tolerances, routine tests, and investigation tests for short-primary type linear induction motors (LIM) fed by power converters.
With obedience and compliance to BS EN 62520, you can improve the performance of short-primary type linear induction motors (LIM) and assist in testing linear induction motors (LIM) properly to produce reliable results.
