上述溫升是美國UL987 內的標準
Table 50.1
Maximum acceptable temperature rises
Materials and Components °C °F
A. Class A insulation systems
1. In an open motor and on a vibrator coil:
Thermocouple or resistance method 75°C 135°F
2. In a totally enclosed motor:
Thermocouple or resistance method 80°C 144°F
B. Class B insulation systems
1. In an open motor and on a vibrator coil: 95°C 171°F
Thermocouple or resistance method
2. In a totally enclosed motor: 100 °C 180°F
Thermocouple or resistance method