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Temperature of 7 insulation levels for motors
The motor has 7 insulation levels: Y-level maximum allowable temperature: 90 ℃, A-level maximum allowable temperature: 105 ℃, E-level maximum allowable temperature: 120 ℃, B-level maximum allowable temperature: 130 ℃, F-level maximum allowable temperature: 155 ℃, H-level maximum allowable temperature: 180 ℃, C-level maximum allowable temperature: above 200 ℃.
Temperature of 7 insulation levels for motors
The insulation level is a standard for measuring the heat resistance of insulation materials, which is divided into 7 levels based on heat resistance, as follows:
Y level
Maximum allowable temperature: 90 ℃
Applicable scenarios: Low temperature environments, such as low-voltage motors.
A-level
Maximum allowable temperature: 105 ℃
Applicable scenario: Medium temperature environment, commonly used in ordinary electric motors.
class e
Maximum allowable temperature: 120 ℃
Applicable scenarios: Medium temperature environments, such as some industrial equipment.
Grade B
Maximum allowable temperature: 130 ℃
Applicable scenarios: High temperature environments, such as high-temperature motors or special industrial equipment.
Grade F
Maximum allowable temperature: 155 ℃
Applicable scenarios: High temperature environments, such as high-temperature resistant motors or special electrical equipment.
class h
Maximum allowable temperature: 180 ℃
Applicable scenarios: extremely high temperature environments, such as high-temperature industrial equipment or special scenarios.
Grade C
Maximum allowable temperature: above 200 ℃
Applicable scenarios: Extreme high temperature environments, such as special chemical equipment or high-temperature process flows.
Supplementary explanation
The insulation level also involves the winding temperature rise limit (K value), such as 60K for Class A and 80K for Class B- Different devices (such as generators and motors) may have different requirements for insulation levels, and the appropriate level should be selected based on actual operating conditions- In practical applications, attention should be paid to the impact of environmental temperature on the lifespan of insulation materials to avoid exceeding the allowable temperature rise limit.
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