Description: Part of the total active maintenance time required to perform preventive maintenance; Name: active period of preventive maintenance
Description: part of the active maintenance time taken to perform a preventive maintenance; Name: active preventive maintenance time
Description: norm/stipulation describing the explosion protection. The explosion protection type, the device category, the temperature class as well as the device / explosion group are taken from this norm. The type and number of the norm/stipulation with issue year and issue month must be given; Name: Reference norm of the explosion protection of the electric motor