심해 방폭
안전성이 강화된 전기 장비, 방폭 모터 등, 변압기, 전자기 전선, 및 형광등용 안정기, 일부에는 내부 권선이 포함되어 있습니다.. 이 권선에 대한 요구 사항, 기계적으로나 전기적으로나, 표준 권선보다 높습니다..
일반적으로, 이 코일을 감는 데 사용되는 절연 전선은 이중 절연되어야 합니다., and the coil’s rated diameter must not be less than 0.25mm.
For the enameled wire used in winding these coils, it is recommended to use GB/T6109.2-2008 “Polyester Enameled Round Copper Wire, Class 155,” GB/T 6109.5-2008 “Polyester-imide Enameled Round Copper Wire, Class 180,” GB/T 6109.6-2008 “Polyimide Enameled Round Copper Wire, Class 220,” or GB/T6109.20-2008 “Polyamide-imide Composite Polyester or Polyester-imide Enameled Round Copper Wire, Class 220.”
추가적으로, 등급 1 enameled round copper wire as specified in these standards can be used, provided it passes the relevant tests outlined in the standards.
After winding, an appropriate impregnating agent should be used to enhance the insulation properties of the windings.
The impregnation process should follow the manufacturer’s specified method, using techniques like dipping, trickling, or vacuum pressure impregnation (VPI) to fill the gaps between winding wires and ensure strong adhesion. If the impregnating agent contains solvents, the impregnation and drying should be performed twice to allow solvent evaporation.
일반적으로, methods like spraying or coating for insulating windings are considered unreliable for 폭발 방지 전기 장비. Adequate attention should be given to this in engineering practice.
게다가, for high-voltage windings, the impregnated windings should be treated with anti-corona paint to prevent additional hazards caused by corona discharges.
In enhanced-safety electrical devices, whether motors, electromagnetic coils, or other equipment’s coils, they should generally be equipped with 온도 protection devices to prevent exceeding limit temperatures under normal operation or recognized abnormal conditions.
If a winding does not exceed the limit temperature under continuous overload (such as a motor rotor lock), or if a winding is not subject to overload (like a ballast for fluorescent lamps), then it does not require a temperature protection device.
When enhanced-safety electrical equipment is equipped with temperature protection devices, these can be installed either internally or externally. Regardless, the protection device should have the appropriate 방폭형 and should be assessed in conjunction with the protected equipment.