1. The motor should be capable of rated work under the following conditions of use:
1.1. The altitude does not exceed 1000m.
1.2. The temperature of the cooling medium entering the motor should not exceed 40°C.
1.3. The motor is continuous duty (S1).
1.4. The armature circuit and excitation of the motor are powered by a static whole power supply, and can also be powered by a DC generator set.
1.5. For motors cooled by duct ventilation, the air volume and pressure should meet the requirements in the table below, and the air inlet is on the end cover of the motor's non-commutator side.
     Frame size Air volume (m3/h) Static pressure (Pa)
     ZSN4-225      2880         1400
     ZSN4-250      3000         1400
     ZSN4-280      4000         1600
     ZSN4-315      4680         1600
     ZSN4-355      5200         1600
     
2. The motor insulation class is F class.
3. The rated voltage of the armature of the motor is 440V, and 400V, 220V or other voltages can also be derived according to user requirements: the low armature voltage is constant torque speed regulation, and the minimum speed of the motor can reach 20r/min under the condition of continuous armature current mm, the rated torque can still be maintained at this time, and the speed is stable.
4. The rated excitation voltage of the motor is 180V, and other excitation voltages can also be derived. In order to ensure reliable insulation of the excitation system, when the excitation circuit is disconnected, a release resistor needs to be connected in parallel at both ends of the excitation winding to prevent self-inductance potential. When the excitation voltage is 180-220V, its value is about 7 times the cold-state resistance value of the excitation winding. If the excitation voltage is 320-370V, its value is about 5 times.
5. The efficiency value in the technical data sheet is the efficiency at rated power, rated voltage and rated speed, which includes excitation loss, but does not include the power required by the ventilation device.
6. ZSN4-225 motor does not have compensation winding, but has series winding.
7. The motor provides a terminal with a grounding mark.
8. The performance of this series of motors is in line with the national standard GB755-87 "Basic Technical Essentials of Rotating Electric Machines" and the ministerial standard JB6316-92 "Technical Conditions of Z4 Series DC Motors", and can also be assessed according to the requirements of the International Electrotechnical Commission standard IEC34-l .
4. Structure introduction:
1. The cooling method and enclosure protection level of the motor are shown in the table below:
Cooling method Single pipe inlet (IC17) Double pipe inlet and outlet (IC37)
Degree of protection IP23S IP44
2. Motor installation form: horizontal foot installation (1MB3). The motor can be manufactured as a single-shaft extension or a double-shaft extension. The single-shaft extension motor can be equipped with a tachometer generator or other speed measurement devices on the non-drive side.
3. If the user needs, the thermistor or other overheating protection components can be embedded in the stator winding of the motor.
4. The position of the outlet box is on the right side of the machine base from the transmission side, and it can also be on the left side or above the machine base if the user needs it