GB/T 21707-2008 Replaced National standards

GB/T 21707-2008 Insulation specification for variable frequency adjustable speed definite purpose converter-fed three-phase induction motors

GB/T 21707-2008 Insulation specification for variable frequency adjustable speed definite purpose converter-fed three-phase induction motors

Publish Date: 2008-04-24 Implement Date: 2008-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 21707-2008

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: Asynchronous motor

ICS Name: Electric motor

Publish Date: 2008-04-24

Implement Date: 2008-12-01

Pages: 8 pages

Scope

This standard specifies the insulation structure specifications for three-phase asynchronous motors powered by frequency converter power supplies. This standard applies to dedicated three-phase asynchronous motors with dispersed windings and a voltage rating of 1,140 V or lower, which are used for frequency-controlled speed regulation.

Development Information

Word Count: 12 Thousand words Pages: 8 pages

Superseded by the following standards

GB/T 21707-2018 Insulation specification for variable frequency adjustable speed definite purpose converter-fed three-phase induction motors

Referenced Standards

GB/T 4074.5-1999 Test methods for winding wires—Part 5:Electrical properties GB/T 6109.11-1990 Enamelled round winding wires Part 11:Polyester(imide) enamelled round copper wires overcoated with polyamide-imide, class 200 GB/T 11026.4-1999 Guide for the determination of thermal endurance properties of electrical insulating materials—Part 4:Ageing ovens—Single-chamber ovens GB/T 17948.1-2000 Rotating electrical machines—Functional evaluation of insulation systems—Test procedures for wire-wound windings—Thermal evaluation and classification JB/T 4061.1-1995 IEC 60034-18-41:2006 IEC 60034-25:2004 IEC 62068-1:2003 JB/T 8151.1-1999 Insulating hose specification - Specification requirements for various types of hoses - Silicone rubber fiberglass hose JB/T 10508-2005 Technical specification for slot wedges used in small and medium-sized motors JB/T 5658-1991 Electrical pressure-sensitive adhesive tape with polyester film hot-melt adhesive tape JB/T 5659-1991 Electrical pressure-sensitive adhesive tape with polyimide film thermal-set adhesive tape JB/T 8151.3-1999 Acrylic ester glass fiber soft tube

Related Standards

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