In comparison, the interruption performance of the circuit breaker universal motor is excellent, and the reliable mechanical design is added, so the excellent performance of the capacitor is guaranteed. In practical applications, however, users should provide them with a good working environment. At the same time, in the process of designing the circuit breaker universal motor, it is necessary to ensure that the normal work can be maintained under the corresponding conditions.
Usually, the circuit breaker universal motor should not only meet the requirements of performance, but also can maintain normal working status under such conditions. We often say that the general environmental conditions refers to the elevation not more than 1000 meters, the ambient air temperature with the operation of the host stable changes in the corresponding changes. However, the maximum temperature should not exceed 40 degrees and the ambient minimum temperature should not be less than 0 degrees. Attention should also be paid to environmental humidity.
In other words, if in practice, the circuit breaker universal motor has to work for a long time in the environment below zero, then it needs to be specially designed. Usually, the working time of the product is relatively short, so the power and power factors of the engine do not make basic provisions.
However, when the circuit breaker universal motor is running in hot stable state, the tolerance of its speed guarantee value should not exceed ±20 %. When working under rated voltage conditions, the grade of the commutator spark should meet the corresponding requirements. In addition, the requirements of the insulation face should be met. For example, the connection requirements of the motor winding for the casing should not be less than 50 ohms under normal conditions. In the hot state, the resistance should not be less than 5 ohms.
In order to ensure the normal use of the circuit breaker universal motor, the insulation performance must be ensured. For example, at 1.06 times voltage and standard test conditions, the leakage current between any level of the winding of the motor winding and the metal piece that is easy to contact should not exceed 0.25A when the circuit breaker universal motor is operating to the heating stability.