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ZZJ-808 37.3KW 525RPM series excitation ZZJ800 Series Tong crane DC Motor

ZZJ series dc motor

Rated power: 3.75KW-243KW

Rated voltage: 220V/440V

Duty: S1/S2/S3

Excitation method: series excitation/shunt excitation/compound excitation/seprarate excitation

Application: Tong crane machine

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Model:
ZZJ-800 series dc motor
Brand:
WPDJ

Frame	External ventilation continuous rating or fully enclosed short-time working system (S2) 1h rating						Totally Enclosed Series-Wound Short-Time Duty (S2) 30-Minute Rating		Totally Enclosed Intermittent Periodic Duty (S3) Duty Cycle (FC) = 30%						Airflow for External Ventilation at Continuous Rating (m³/s)	Maximum Starting Torque N.m			Maximum Operating Torque N.m			Rotor Moment of Inertia (GD²kgf.m²)	Maximum Safe Operating Speed (r/min)	Weight kg
	Power (kw)	Speed at Rated Voltage (r/min)														Maximum Starting Torque N.m			Maximum Operating Torque N.m
		Series Excitation	Compound Excitation	Shunt Excitation Separate Excitation	Shunt Excitation Separate Excitation				Series Excitation		Compound Excitation		Shunt Excitation			Series Excitation	Compound Excitation	Shunt Excitation	Series Excitation	Compound Excitation	Shunt Excitation
					Speed Control		Powerkw	Speed at Rated Voltage (r/min)	Power (kw)	Speed (r/min)	Power (kw)	Speed (r/min)	Pwoer (kw)	Speed (r/min)
					220V	440V
					220V	440V
802A	3.75	900	1025	1025	1025/2025	1025/2025	5.0	750	4.1	840	3.75	1080	3.75	1130	0.052	198	157	126	158	123	102	0.5	3600	240
802B	5.6	800	900	900	900/1800	900/1800	7.5	675	6.0	780	5.6	950	5.6	1000	0.052	330	270	216	268	210	177	0.75	3600	270
802C	7.5	800	900	900	900/1800	900/1800	10.0	675	7.5	800	7.1	940	6.7	1000	0.076	450	360	237	360	280	220	0.75	3600	270
803	11.2	725	800	800	800/2000	800/1600	14.1	620	11.2	725	10.8	840	10.5	880	0.094	740	610	400	600	470	360	1.8	3300	390
804	15.0	650	725	725	725/1800	725/1450	19.5	580	15.0	650	13.8	775	12.7	800	0.12	1100	880	590	880	685	530	3.0	3000	550
806	22.4	575	650	650	650/1950	650/1300	29.0	500	22.4	575	21.2	690	18.6	715	0.16	1870	1500	980	1490	1170	880	5.6	2600	870
808	37.3	525	575	575	575/1725	575/1150	48.5	450	30.0	570	28	625	26.0	630	0.20	3400	2800	1860	2700	2150	1650	11.5	2300	1030
810	52	500	550	550	550/1650	550/1100	67	440	45.0	550	39	615	33.5	600	0.25	5000	4000	2700	4000	3100	2450	17.5	2200	1250
812	75	475	515	515	515/1300	515/1050	100	420	63.5	525	56	580	45.0	565	0.35	7450	6250	4150	6000	4900	3750	28	1900	1550
814	112	460	500	500	500/1250	500/1000	149	400	86	515	82	565	63.5	560	0.42	11600	9600	6400	9300	7500	5800	48	1700	2400
816	150	450	480	480	480/1200	480/960	200	400	112	500	104	540	82	535	0.57	16000	13300	8900	12600	10400	8000	75	1600	2400
818	186	410	435	435	435/1100	435/870	243	360	138	485	123	490	97	470	0.75	21700	18400	12300	17400	14400	11000	110	1500	4300

Note: ① There are three specifications for the 802 motor frame, with the same motor installation dimensions but different electromagnetic designs. (② To obtain the adjustment range of the variable speed motor, a small amount of stable excitation winding is allowed.

③ The intermittent duty cycle (S3) has a period of 5 minutes per cycle, with continuous excitation of the excitation field. ④ The maximum starting torque and maximum running torque can reach the maximum values considering other performance requirements.

⑤ The tolerance of the armature inertia torque GD is taken as a positive value.

Product Introduction:

The ZZJ-800 series auxiliary drive motors for rolling mills are one of our company's main products. These motors are manufactured in accordance with the IEC-34-13 "Motors for Auxiliary Drives of Rolling Mills" standard set by the International Electrotechnical Commission. They are crucial power equipment in the steel industry, capable of withstanding harsh working conditions. They can endure frequent starts, stops, reversals, and repeated high overload torques. These motors are primarily used in equipment such as work roll tables, pressing devices, looper tension rolls, shears, and crane hoists. They serve as updated replacements for the ZZ/ZZK, ZZY, ZZJO, and ZZJ2 series motors.

This series of motors features a cylindrical structure with good heat dissipation, suitable for rectifier power supply. They can withstand pulsed currents and abrupt changes in current (load variations) while maintaining good commutation.

These motors maintain the installation dimensions of the 600 series, but with one power level higher than the 600 series, reaching the international advanced level.

The motors have F-class insulation, employing a reliable insulation structure and impregnation process to ensure stable insulation performance and good heat dissipation. The motors are suitable for power supply from DC generator sets as well as static rectifier power supplies. When the rectifier power supply is connected in a three-phase full-controlled bridge circuit, no filter reactor is required for long-term stable operation.

Motor Performance:

3.1 The data in the technical parameter table should work under the following conditions:

a. Altitude not exceeding 1000 meters.

b. Ambient air temperature between -30℃ and +40℃.

c. The working environment should not contain acidic, alkaline, or other gases that corrode insulation.

d. The motor duty cycles include:

Ventilated continuous duty (S1),
Fully enclosed short-time duty (S2),
Fully enclosed intermittent periodic duty (S3) with a duty cycle (FC) of 30%.

e. The motor armature circuit and excitation circuit can be powered by a static rectifier power supply or a DC generator.

f. The performance of this series of motors complies with the requirements of the GB5227-85 standard "Auxiliary Drive DC Motors for Rolling Mills".

3.2 The standard rated voltages of the motor are 220V and 440V. Other voltage levels can be negotiated with our company.

3.3 The rated speed of the motor should conform to the provisions in the technical data table according to the characteristics of the motor. Motors with a rated voltage of 220V should be capable of voltage regulation for speed control.

3.4 When the motor is powered by a DC power source with no significant pulsation (i.e., using a rotary generator as the power source), operates at rated output power and the specified duty cycle, and the ambient air temperature does not exceed 40℃, the temperature rise of various windings measured by the thermometer method should not exceed 75K or 110K when measured by the resistance method. The temperature rise of the commutator measured by the thermometer method should not exceed 85℃.

3.5 For compound-wound DC motors with ventilated continuous duty (S1) or fully enclosed short-time duty (S2) with a 1-hour time limit, the excitation ampere-turn ratio is approximately 50% shunt and 50% series excitation.

3.6 For DC motors with ventilated continuous duty (S1) or fully enclosed short-time duty (S2) with a 1-hour time limit, the maximum speed regulation rate should not exceed the following regulations.

Motor Performance:

3.1 The data in the technical parameter table should work under the following conditions:

a. Altitude not exceeding 1000 meters.

b. Ambient air temperature between -30℃ and +40℃.

c. The working environment should not contain acidic, alkaline, or other gases that corrode insulation.

d. The motor duty cycles include:

Ventilated continuous duty (S1),
Fully enclosed short-time duty (S2),
Fully enclosed intermittent periodic duty (S3) with a duty cycle (FC) of 30%.

e. The motor armature circuit and excitation circuit can be powered by a static rectifier power supply or a DC generator.

f. The performance of this series of motors complies with the requirements of the GB5227-85 standard "Auxiliary Drive DC Motors for Rolling Mills".

3.2 The standard rated voltages of the motor are 220V and 440V. Other voltage levels can be negotiated with our company.

3.3 The rated speed of the motor should conform to the provisions in the technical data table according to the characteristics of the motor. Motors with a rated voltage of 220V should be capable of voltage regulation for speed control.

3.4 When the motor is powered by a DC power source with no significant pulsation (i.e., using a rotary generator as the power source), operates at rated output power and the specified duty cycle, and the ambient air temperature does not exceed 40℃, the temperature rise of various windings measured by the thermometer method should not exceed 75K or 110K when measured by the resistance method. The temperature rise of the commutator measured by the thermometer method should not exceed 85℃.

3.5 For compound-wound DC motors with ventilated continuous duty (S1) or fully enclosed short-time duty (S2) with a 1-hour time limit, the excitation ampere-turn ratio is approximately 50% shunt and 50% series excitation.

3.6 For DC motors with ventilated continuous duty (S1) or fully enclosed short-time duty (S2) with a 1-hour time limit, the maximum speed regulation rate should not exceed the following regulations.

The ratio of the base speed to the rated speed (%)	Maximum speed regulation rate (%)
100	15
200	20
300	25

3.7 During the specified operating period, the speed variation of the motor at full load in a cold state should not exceed 15% of the rated speed for ventilated DC motors and 20% of the rated speed for fully enclosed DC motors.

At normal operating temperature, rated load, rated voltage, and rated current, the speed tolerance of the motor should not exceed ±7.5% of the rated speed.

3.8 All motors from model ZZJ-810 and above are equipped with compensating windings.

3.9 The motor is provided with terminal posts marked for grounding.

Motor Structure Overview:

4.1 Protection and Installation Structure:

a. Protection Types for the Entire Series:- Fully enclosed: IP44 - Ventilated: IP23

b. Installation Method:Complies with the national standard GB997-81, classified as IMB3. Other installation methods can be negotiated with our company.

4.2 Cooling Methods:

Fully Enclosed Motors:

IC0040: Natural cooling on the surface of the enclosure.
IC0041: Air cooling driven by an internal fan connected to the motor itself.

Ventilated Motors:

IC17: Air intake through a duct, natural air exhaust.
IC37: Air intake and exhaust through ducts.
IC16: Equipped with an independent blower.

The required cooling air volume for each frame number is as follows (see table):

Frame	Air flow rate for ventilated continuous duty motors (m³/s)
802A	0.052
802B	0.052
802C	0.076
803	0.094
804	0.12
806	0.16
808	0.20
810	0.25
812	0.35
814	0.42
816	0.57
818	0.75

4.3 The position of the terminal box, viewed from the main drive end, is on the right side of the frame. If the left side or the top is required, it can be negotiated with our company.

4.4 The motor can be equipped with a tachogenerator and accessories on the auxiliary drive end.

4.5 The motor has a double taper shaft extension, with a standard taper of 1:10. If a shaft taper of 1:9 or a change in the overall length of the motor is required, it can be negotiated with our company.

4.6 The motor's drive is connected via an elastic coupling, and care must be taken to align the unit properly.

Ordering Instructions:

5.1 Before placing an order, please refer to the product catalog to clarify the model specifications and other data. If the required variety, specifications, etc., differ from those in the catalog, please contact our company promptly. If there are specific requirements, please submit clear and specific requests in advance. These will be discussed with the relevant departments of our company, and upon agreement, a contract or trial production agreement will be signed.

5.2 When placing an order, please specify the motor model, power rating, voltage, speed, duty cycle, structural type, cooling method, excitation method, excitation voltage, shaft type, terminal box position, as well as the names of accessories, spare parts, etc.

5.3 If the motor is intended for use in special environments requiring resistance to humidity and heat, please indicate "TH" after the original model number.

37.3KW 525RPM ZZJ800 Series DC Motor Tong Crane DC motor dc motor DC motor for metallurgy Hoisting DC motor Steel rolling machine motor Elevator DC motor Electric excavator motor IP23/IP44 protection IC01/IC06/IC17/IC37 cooling methods

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