Z4 DC motor (Center height 100-355mm) can be widely applied in metallurgical industry rolling mill, metal cutting machine, paper-making, textile, printing, cement, plastic extruder and other industry. It is suitable for situations that need wide speed control scope, electric dragging which overload abrity not exceed 1.6 times, Constant power of weak magnetic upward speed control scope can be 1~3 times of rated speed for different specifications. Constant torque reduced and the armature voltage downward the speed control can be 20 r/min. see page 26 for overload capacity.
Z4 DC motor has more advantages than Z2 and Z3 series. It can not only supplied by direct current power, but also suitable to be supplied by static rectifying power. And the small inertia is smaller, dynamic performance is better. Z4 motor can suffer a higher rating of load, especially suitable for smooth speed control, high efficiency, automatic steady speed, sensitive control system. It has reached the international advanced level.
The duty of Z4 motor is S1, in area which the altitude not exceed 1000 meters and the ambient temperature not over 40 °C, the performance of the motor will be same as the rating data in the data sheet. The insulation grade is F class.
If the rated voltage is 160 and supplied by single phase bridge commutator, the motor is supposed to be operated with an electric reactor. The external electric reactor's inductance value should be showed on motor nameplate. If the rated voltage is 440v, the reactor is not needed.
This motor is not only accord with national standard GB/T755 « rotating electric motor technical conditions out also meet the requirements of Germany VDE0530 standard.