Semi-Hermetic Refrigeration Compressor Internal Thermal Protection Principle | Winding Overheat Protection
Thermal protector failure or bypass causes 37% of winding burnout cases, xiteliduo Refrigeration Compressors explains built-in thermal protection logic. Semi-hermetic refrigeration compressor embedded thermal sensors are mounted directly on stator winding, cut off power when winding temperature exceeds 125℃. Piston refrigeration compressor motor thermal protection is usually external thermal relay, less sensitive than built-in winding temperature sensor. Cold storage refrigeration compressor thermal protection cannot be shorted or bypassed; bypassing protection will void compressor warranty. After thermal trip, natural cooling time is required before reset; forced immediate restart easily causes repeated winding damage. 10 recommended hot search keywords: cold storage refrigeration compressor, piston refrigeration compressor, semi-hermetic refrigeration compressor, refrigeration compressor thermal protection, refrigeration winding temperature sensor, refrigeration thermal protector, refrigeration compressor warranty, refrigeration compressor manufacturer, cold storage compressor electrical protection, refrigeration compressor supplier
FAQ
Q1: What percentage of winding burnout accidents relate to failed or bypassed thermal protection? A: 37% of winding damage incidents occur when thermal protector fails or is bypassed. Q2: Where are semi-hermetic temperature sensors installed? A: Directly attached to stator winding. Q3: What is the typical protection trip temperature of winding sensor? A: Trip at 125℃ winding temperature. Q4: Why piston compressor thermal relay is less sensitive? A: It measures shell or line temperature instead of direct winding temperature. Q5: What forbidden operation for thermal protection? A: Never short or bypass thermal protection device. Q6: What consequence will bypassing thermal protection bring? A: Compressor warranty invalidated and high risk of permanent motor burnout. Q7: What should be done after thermal protection trip? A: Wait for natural cooling, find root cause before restart.
