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dc gear motor, 1. high utilization of stator room, 2. tight inner structer, 3. small rotating inertia, 4. light weight. - details see: https://www.machineto.com/zfqz-series-start-stop-share-d-c-motor-10130019

dc gear motor

StructureFeature

1.The motor baseplate is of octagon laminated thin steel plate structure. Therefore, it has many advantage such as high utilization of stator room, tight inner structer,small rotating inertia, light weight and suitbale for supplying electricity by controllable silicon.

2.All the motors have ompensating winding, which makes motors have a good ability of commutation and overload function.

3.The insulating level of motors is Level F. The insulation of motors is handed by Vacuum Impregnation(VPI). The winding has a good insulation and mechanical intensity.

4.The commutator segment is of vertical plate and integral structure. The connection with the vertical plate and armature coil adopts Tungsten insert gas shielded arc welding (TIG).

5.The armature core is of skewed slot structure, which is able to decrease vibration and noise effectively.

6.The motors structure is of rolling bearing and oil-filling without stopping.

Product Specification

1.There are 2 kinds of rated voltage of motors: 220V, 440V. As required, the motors with other voltage level can be produced.

2.The mode excitation of motors is shunt type. The voltage of excitation is 180V or 310V. As required, the motors with other voltage level can be produced.

3.The motors coulel be operated for 60s under Max. Torgue listed the Techanical Data Table.

4.For the motors of rated voltage 220V, the rotating speed can reach as 2 times as the rated rotating speed through increasing the applied voltage. At this time, the allowable max. rotating moment is as 1.8 times as the rated rotating moment. It will last 15s.

5.For the motors of rated voltage 220V, the max. totating moment is as 0.6times as the rated rotatng moment when the motors are running with field rotation regulated in the Technical Data Table. It will last 15s.

6.The electric current changing rate (di/dt) of the motors can reach as 200-250 times as the rated electric current changing rate, It can be discussed if di/dt>250 is required.

7.The standard position of wire outlet box of the motors is on the right of the machine baseplate seen from the drive end. If required, it can be mounted on the left of the machine baseplate. If so, this requirement should be stated in the order.

General

Series ZFQZ DC motors are developed on the basis of Z4 Series and ZZJ-800 Series DC motors. The rotating inertia of the motors is 45% and 65% of the motors of Series ZZJ-800 and ZZJ-900 respectively. The mtors are suitable for direct and reversal rotation and start and stop in high frequency in a bad working circumstance. The motors are good-overloading. The max. rotating moment and the starting moment are 112% and 117% of the moments of Series ZZJ-880 and Series ZZJ-900 motors respectively. The weight of the motors is just 65% of the Series ZZJ-800 motors. The class of the motor power is in accordance with the international standard IEC34-13" Technical Criterions of Auxiliary Machine and Hoisting and Metallurgy. Outline mounting dimensions of the motors compil with IEC 72 Standard, expect for the axial distance between the mounting holes (dimension B). The mounting dimension of the motors with bottom plates is able to be in compliance with the dimension of Series ZZJ-800 and Series ZZJ-900 motors. Also, the shaft extension dimension of the motors can be customized into the corresponding dimension of Series ZZJ-800 and Series ZZJ-900 motors after discussion with customers. Therefore, Series ZFQZ DC motors can substitute for Series ZZJ-800 and SeriesZZJ-900 motors.

Requirements for Use

1.The allowable ambient temperature for the operation of the motors is -30°c ~ +40°c, and the allowable sea level is not higher than 1000m.

2.The suoolying electric source of the motors adopts rectified elecric source or DC generator electric source. When adopting 3-phase, fully controllable bridge rectified electric source, the motors can work for a long period without outer smoothing reactor.

Working system, Protection Level, Cooling Mode and Mounting Type

The motors adopt continuous working system. Other working system can convert the data in theTechanical Data Table according to the Table 1.

Table 1

working system	overload increasing
S2-3Omin	107%
S2-6Omin	100%
S3-40%	120%
S3-60%	110%

All the cooling modes of the motors are of seperately-cooling and forced wentilation type. It means the motors are equipped with radial ride type air blower, duct ventilation cooler or air/water cooler. The corresponding relations between the protection level and the cooling mode are shown in Table 2. The ventilation quantity, ventilation pressure and the air blower power of the cooler are shown in Table 3. The recycling air bower power and cooling water of the air/water cooler shown in Table 4.

Table 2

	Protection Level	Cooling Mode
Radial Ride Type Air Blower Cooling	IP21S	IC06
Single-duct Ventilation	IP23S	IC17
Double-duct Ventilation	IP44	IC37
With Air/Water Cooler	IP44	ICW86

Table 3

Model	Air Volumn(m3/hr)	Static Pressure(Pa)	Blower Motor Power(kw)	Weight(kg)
ZFQZ-250	3000	1400	3	70
ZFQZ-280	4000	1600	4	80
ZFQZ-315	4860	1600	5.5	90
ZFQZ-355	5200	1600	5.5	120
ZFQZ-400	7200	1800	5.5	180
ZFQZ-450	9000	1800	7.5	250

Note: The motors of air blower adopt 3-phase, 2-electrode and 380V.

Table4

Cooler Type	Blower Motor	Cooling Water Discharge(m3/hr)	Weight(kg)
KSL-250	4.0kw	11	400
KSL-280	5.5kw	12	500
KSL-315	5.5kw	13	600
KSL-355	7.5kw	15	750
KSL-400	7.5kw	18	850
KSL-450	11kw	19.5	950

Note: The motors of air blower adopt 3-phase, 2-electrod and 380V.

If other working system, protection level, cooling mode and mounting type are requires, it should be discussed separately.

Attachments

As required, this series of motors can be equipped with tacho-components, over-speed protection device heater and temperature-measurement, temperature-limit components.