GB/T 21707-2008
Insulation specification for variable frequency adjustable speed definite purpose converter-fed three-phase induction motors (English Version)
- Standard No.
- GB/T 21707-2008
- Language
- Chinese, Available in English version
- Release Date
- 2008
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2019-01
- Replace By
- GB/T 21707-2018
- Latest
- GB/T 21707-2018
- Scope
- This standard specifies the insulation structure specifications for three-phase asynchronous motors powered by variable frequency power supplies. This standard is applicable to three-phase asynchronous motors with frequency conversion and speed regulation dedicated to frequency conversion and speed regulation with loose windings at a voltage level of 1140V and below.
GB/T 21707-2008 Referenced Document
- 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
- 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
- IEC 62068-1:2003 Electrical insulation systems - Electrical stresses produced by repetitive impulses - Part 1: General method of evaluation of electrical endurance
- JB/T 10508-2005 Specifications for slot wedges used in small and middle size electric machines
- JB/T 4061.1-1995 Soft composite materials Polyester film aromatic polyamide fiber paper soft composite materials
- JB/T 5658-1991 Pressure-sensitive adhesive tape for electrical purposes. Polyester film thermosetting adhesive tape
- JB/T 5659-1991 Pressure-sensitive adhesive tape for electrical purposes. Polyimide film thermosetting adhesive tape
- JB/T 8151.1-1999 Specification for flexible insulating sleeving-specification requirements for individual types of sleeving-glass textile sleeving with silicone elastomer coating
- JB/T 8151.3-1999 Glass textile sleeving withacrylic based coating
GB/T 21707-2008 history
- 2018 GB/T 21707-2018 Insulation specification for variable frequency adjustable speed definite purpose converter-fed three-phase induction motors
- 2008 GB/T 21707-2008 Insulation specification for variable frequency adjustable speed definite purpose converter-fed three-phase induction motors
