Series Z4 dc motors are newly developed products of our works. The products are found wide use for prime mover in various, such as mill auxiliary in metallurgical industry, metal cutting machine-tool, paper making, print, textile, printing and dyeing, cement-making, plastic extruding machine, etc.
Outline and mounting dimensions of the motors comply with IEC72 Standard, except for the axial distance between the mounting holes (dimension B).
2.Standard rated voltage: 160V or 440V, Values for 220V, 400V, and 660V or other voltage may be derived on request.
3.Rated speed: 3000, 1500, 1000, 750, 600, 500, 400, 300 and 200 r/min, totally nine grades. Decrease armature voltage to make speed regulating under constant torque, lowering down field voltage to make speed regulating at constant output. Speed regulating range: See technical date. The torque can be remained constant by reducing speed via armature voltage weakening below raced value. It is stipulated that armature speed range can be down to the lowest 20 r/min at constant torque and stable running.
4.Separate excitation is the basic excitation type of the motors. Nominal field voltage: 180V.
Other excitation voltages are also acceptable on request. Forced excitation is allowed with the voltage of less than 500V.
5. Data listed in the technical data sheet should be employed under the following conditions;
A. Altitude above sea level maximal 1, 000m;
B. Cooling air temperature maximal 40;
C. Ambient conditions for motors should be free from acidic, alkali fumes or other aggressive gases which corrode insulation.
D. Duty: Continuous (SI);
E. Armature and field circuits for motors may be either operated on static thyrisier controlled supplies, or from d-c generator;
F. Performances of motors all comply with State Standard GB755. Fundamental technical rules for electrical machinery.
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