21.180 - Housings, enclosures, other machine parts

This part of IEC 61400 defines standard electrical simulation models for wind turbines and wind
power plants. The specified models are time domain positive sequence simulation models,
intended to be used in power system and grid stability analyses. The models are applicable for
dynamic simulations of short term stability in power systems.
This document defines the generic terms and parameters for the electrical simulation models.
This document specifies electrical simulation models for the ...view more

IEC 61400-27-1:2020 defines standard electrical simulation models for wind turbines and wind power plants. The specified models are time domain positive sequence simulation models, intended to be used in power system and grid stability analyses. The models are applicable for dynamic simulations of short term stability in power systems. This document defines the generic terms and parameters for the electrical simulation models. This document specifies electrical simulation models for the generic ...view more

This European Standard specifies the technical requirements, the appropriate dimensions and the requirements for testing. This European Standard applies to castors and wheels which may include braking and/or locking devices, specifically for manually propelled use in an institutional environment. This includes for example, shops, restaurants, hotels, educational buildings and hospitals. Castors for specialised applications may also have to conform to other specialised standards.

This European Standard defines terms and symbols relating to castors and wheels.   NOTE 1: Castors and wheels is the English expression; in other languages the expression may be reversed e.g. in French "Roues et roulettes" and in German "Räder und Rollen".

This standard specifies the test methods and apparatus to be used to check the performance of the castors and wheels. The test to be used and the acceptance criteria, values and applicability relevant to each type of castor and wheel are covered by the specific standards.

This European standard specifies the technical requirements, the appropriate dimensions and the requirements for testing. This European standard applies to castors and wheels (which may include accessories) specifically for manually propelled or power towed industrial applications at speeds over 1,1 m/s (4 km/h) and up to 4,4 m/s (16 km/h). Pneumatic wheels and drive wheels are excluded from this standard.

This European Standard specifies the technical requirements, the appropriate dimensions and the requirements for testing.  This European Standard applies to castors and wheels (which may include accessories) for manually propelled or power towed industrial applications up to 1,1 m/s (4 km/h). This European Standard does not apply to castors and wheels for furniture, swivel chairs, institutional, hospital beds and driven applications. Castors for specialised applications may also have to conform ...view more

This European standard specifies the technical requirements, the appropriate dimensions and the requirements for testing. This European standard applies to castors and wheels (which may include accessories) specifically for manually propelled or power towed industrial applications at speeds over 1,1 m/s (4 km/h) and up to 4,4 m/s (16 km/h). Pneumatic wheels and drive wheels are excluded from this standard.

This European Standard specifies the technical requirements, the appropriate dimensions and the requirements for testing.  This European Standard applies to castors and wheels (which may include accessories) for manually propelled or power towed industrial applications up to 1,1 m/s (4 km/h). This European Standard does not apply to castors and wheels for furniture, swivel chairs, institutional, hospital beds and driven applications. Castors for specialised applications may also have to conform ...view more

This European Standard defines terms and symbols relating to castors and wheels.   NOTE 1: Castors and wheels is the English expression; in other languages the expression may be reversed e.g. in French "Roues et roulettes" and in German "Räder und Rollen".

This standard specifies the test methods and apparatus to be used to check the performance of the castors and wheels. The test to be used and the acceptance criteria, values and applicability relevant to each type of castor and wheel are covered by the specific standards.

This European Standard specifies the technical requirements, the appropriate dimensions and the requirements for testing. This European Standard applies to castors and wheels which may include braking and/or locking devices, specifically for manually propelled use in an institutional environment. This includes for example, shops, restaurants, hotels, educational buildings and hospitals. Castors for specialised applications may also have to conform to other specialised standards.