Steel Rolling Mill DC Motors

Features and application

Z ZFQZ ZZJ Series Steel Rolling DC Motor is 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).
Performance and technical requirements of the motors can be checked in accordance with IEC34-1 Standard of the International Electro technical Commission, or DIN57530 Norm of the Deutsche Industries-Norm.
The motors are class F insulated, with reliable insulating construction and impregnating process, ensuring stable dielectric performance and excellent heat dissipation.
The motors possess the features of small size, good performance, light weight, large output, high efficiency and reliability, being able to match the current international advanced level.
The motors can be lastingly operated form fully controlled three-phase bridge without a smoothing reactor. Motors for 160V may be operated on single-phase bridge thyristor. In that case, a smoothing reactor, whose inductance is specified in the relevant technical date, should be inserted in the armature circuit to suppress ripple current.

Performance

1. 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 machines.
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. When a motor is normally running, its excitation current must not be higher than rated excitation current. To assure the reliability of insulation of excitation system, the motor must be protected against self induced voltages by a release resistor connected in parallel with the excitation circuit of the motor is  interrupted. At rated field voltage the value of shunt resistor is about seven times filed winding resistance (cold state). While the field voltage is higher than nominal voltage, the value of shunt resistance may be lower than seven times field resistance, otherwise higher than seven times.
5. For frame size Z4-315, Z4-355, Z4-400 and Z4-450, compensating windings are provided. For frame size Z4-250 and Z4-280 the motors are feasible with a compensating winding too.
6. A marked earthing terminal is provided forth motors.
7. The efficiencies listed in the date sheet are for rated output, voltage and speed, and include excitation lose, excluding that of separate ventilating fans.


Technical parameter of Z4 series motor.

Model	Rated power	Rated speed			Speed with field weaking	Field power	Eff.	Moment of    Inertia
		160V	400V	440V				GD2
	kW	r/min			r/min	W	%	kg   m2
Z4-100-1	2.2	1490			3000	315	67.8	0.044
	1.5	955			2000		58.5
	4		2630		4000		78.9
	4			2960	4000		80.1
	2		1310		3000		68.4
	2.2			1480	3000		70.6
	1.4		860		2000		60.3
	1.5			990	2000		63.2
Z4-112/2-1	3	1540			3000	320	69.1	0.072
	2.2	975			2000		62.1
	5.5		2630		4000		79.9
	5.5			2940	4000		81.1
	2.8		1340		3000		71.2
	3			1500	3000		72.8
	1.9		855		2000		61.1
	2.2			965	2000		63.5
Z4-112/2-2	4	1450			3000	350	72.6	0.088
	3	1070			2000		66.8
	7		2660		4000		82.4
	7.5			2980	4000		83.5
	3.7		1320		3000		74.1
	4			1500	3000		76
	2.6		895		2000		65.1
	3			1010	2000		67.3
Z4-112/4-1	5.5	1520			3000	500	73	0.128
	4	990			2000		64.9
	10		2680		3500		82.7
	11			2950	3500		83.3
	5		1340		1800		74.3
	5.5			1480	1800		75.7
	3.7		855		1100		65.2
	4			980	1100		68.7
Z4-112/4-2	5.5	1090			2000	570	69.5	0.156
	13		2740		3600		84.4
	15			3035	36		85.4
	6.7		1330		1800		76.8
	7.5			1480	1800		78.4
	5		955		1200		71.1
	5.5			1025	1200		71.9
Z4-132-1	18.5		2610		4000	650	85	0.32
	18.5			2850	4000		85.9
	10		1330		2100		79.4
	11			1480	2200		80.9
	7		865		1600		71.9
	7.5			975	1600		74.5
Z4-132-2	20		2800		3600	730	87.8	0.4
	22			3090	3600		88.3
	15		1360		2500		81.2
	15			1510	2500		83.4
	10		905		1400		75.6
	11			995	1400		77.7
Z4-132-3	27		2720		3600	800	88.2	0.48
	30			3000	3600		88.6
	18.5		1390		2100		83.6
	18.5			1540	2200		84.7
	13.5		945		1600		79.4
	15			1050	1600		80.5
Z4-160-11	33		2710		3500	820	87.4	0.64
	37			3000			88.5
	19.5		1350		3000		80.4
	22			1500			82.6
Z4-160-22	40.5		2710		3500	920	88.2	0.76
	45			3000			89.1
Z4-160-21	16.5		900		2000		77.9
	18.5			1000			79.4
Z4-160-32	49.5		2710		3500	1050	89.1	0.88
	55			3010			90.2
Z4-160-31	27		1350		3000		84.7
	30			1500			85.7
	19.5		900		2000		79.1
	22			1000			81.7
Z4-180-11	33		1350		3000	1200	84.7	1.52
	37			1500			86.5
	16.5		670		1900		75.5
	18.5			750			78.1
	13		540		1400		73
	15			600			74.1
Z4-180-22	67		2710		3400	1400	89.5	1.72
	75			3000			90.7
Z4-180-21	40.5		1350		2800		85.8
	45			1500			87
	27		900		2000		82.2
	30			1000			83.7
	19.5		670		1400		77.3
	22			750			79.7
	16.5		540		1600		73.8
	18.5			600			76.8
Z4-180-31	33		900		2000	1500	82.8	1.92
	37			1000			83.6
	19.5		540		1250		74.8
	22			600			76.6
Z4-180-42	81		2710		3200	1700	91	2.2
	90			3000			91.3
Z4-180-41	50		1350		3000		87.5
	55			1500			87.7
	27		670		2000		80.4
	30			750			81.1
Z4-200-12	99		2710		3000	1400	90.2	3.68
	110			3000			91.6
Z4-200-11	40.5		900		2000		83.4
	45			1000			85.5
	33		670		1600		80.2
	37			750			82.9
	19.5		450		1000		72.2
	22			500			77.4
Z4-200-21	67		1350		3000	1500	88.7	4.2
	75			1500			89.6
	27		540		1000		78.8
	30			600			80.4
Z4-200-32	119		2710		3200	1750	91.7	4.8
	132			3000			92.4
Z4-200-31	81		1350		2800		88.7
	90			1500			90
	49.5		900		2000		85.6
	55			1000			87.1
	40.5		670		1400		82.5
	45			750			84.1
	33		540		1200		79.6
	37			600			82
	27		450		750		77.5
	30			500			79.5
Z4-225-11	99		1360		3000	2300	87.9	5
	110			1500			89.4
	67		900		2000		84.4
	75			1000			86.5
	49		680		1300		81.2
	55			750			84
	40		540		1200		78.2
	45			600			80.8
	33		450		1000		76.5
	37			500			78.8
Z4-225-21	49		540		1000	2470	79.3	5.6
	55			600			82.4
	40		450		1000		76.6
	45			500			78.9
Z4-225-31	119		1360		2400	2580	89.3	6.2
	132			1500			90.5
	81		900		2000		86.9
	90			1000			88
	67		680		2250		82.5
	75			750			85.1
Z4-250-12	144		1360		2100	2500	88.8	8.8
	160			1500			89.9
Z4-250-11	99		900		2000		86.2
	110			1000			88.1
Z4-250-21	167		1360		2200	2750	89.8	10
	185			1500			90.5
	81		680		2250		83.2
	90			750			85.2
Z4-250-31	180		1360		2400	2850	90.4	11.2
	200			1500			91.5
	119		900		2000		87.4
	132			1000			89.1
	67		540		2000		80.8
	75			600			84.6
	49		450		1500		78.5
	55			500			82.4
Z4-250-41	198		1360		2400	3000	91	12.8
	220			1500			91.7
Z4-250-42	144		900		2000		88
	160			1000			89.2
Z4-250-41	99		680		1900		85.8
	110			750			87.4
	81		540		1600		83.4
	90			600			85
	67		450		1500		80
	75			500			83.4
Z4-280-11	226		1355		2000	3100	90.9	16.4
	250			1500			91.6
Z4-280-22	253		1355		1800	3500	91.5	18.4
	280			1500			92.1
Z4-280-21	180		900		2000		89.1
	200			1000			90.1
	119		675		1600		87.1
	132			750			88.6
	99		540		1500		84.7
	110			600			86
Z4-280-32	284		1360		1800	3600	91.7	21.2
	315			1500			92.6
Z4-280-31	198		900		2000		89.7
	220			1000			90.6
Z4-280-32	144		675		1700		87.8
	160			750			89.1
Z4-280-31	118		540		1000		85.4
	132			600			86.8
	80		450		1400		84.1
	90			500			85.4
Z4-280-42	225		900		1800	4000	90.2	24
	250			1000			91.1
Z4-280-41	166		675		1900		88.1
	185			750			89.4
	98		450		1000		85.1
	110			500			86.9
Z4-315-12	321		1360		1800	3850	92.2	212
	355			1500			92.8
	253		900		1600		90.4
	280			1000			91.6
	180		680		1900		88.4
	200			750			89.4
Z4-315-11	144		540		1900		86.4
	160			600			87.4
	118		450		1600		84.4
	132			500			86.3
	98		360		1200		81.7
	110			400			84.3
Z4-315-22	284		900		1600	4350	91	24
	315			1000			91.5
	225		680		1600		88.7
	250			750			89.6
Z4-315-21	166		540		1600		87.2
	185			600			88.5
	143		450		1500		84.7
	160			500			86
Z4-315-32	320		900		1600	4650	91	27.2
	355			1000			92
	252		680		1600		89.1
	280			750			89.8
	180		540		1500		88.2
	200			600			89.4
Z4-315-31	118		360		1200		83.2
	132			400			85.3
Z4-315-42	361		900		1400	5200	92.1	30.8
	400			1000			92.7
	284		680		1600		90
	315			750			90.7
	225		540		1600		88.3
	250			600			89
Z4-315-41	166		450		1500		87.3
	185			500			88.3
	143		360		1200		84
	160			400			85.3
Z4-355-12	406		900		1500	4700	91.8	42
	450			1000			92.8
	321		680		1500		90.4
	355			750			91.2
Z4-355-11	253		540		1500		89.2
	280			600			90.2
	180		450		1500		87.6
	200			500			88.9
	166		360		1200		84.9
	185			400			85.9
Z4-355-22	361		680		1600	5600	90.8	46
	400			750			91.7
	284		540		1500		89.5
	315			600			90.5
	225		450		1600		88.4
	250			500			89.5
Z4-355-21	180		360		1200		86.3
	200			400			87.5
Z4-355-32	406		680		1100	6000	91.3	52
	450			750			92.1
	320		540		1600		89.9
	355			600			91
	284		450		1500		88.3
	315			500			89.5
Z4-355-31	197		360		1200		86.6
	220			400			88.4
Z4-355-42	361		540		1300	6500	90.5	60
	400			600			91.2
	320		450		1200		88.9
	355			500			89.2
	225		360		1200		87.5
	250			400			88.8
Z4-400-22	435		680		1400	5700	90.8	74
	480			750			92
Z4-400-21	235		360		1200		84.8
	260			400			86.3
	180		270		900		81.8
	200			300			83.1
Z4-400-32	500		680		1400	6400	91.2	84
	550			750			92.5
	400		540		1300		89.9
	440			600			91.1
	344		450		1300		88.1
	380			500			89.5
Z4-400-31	270		360		1200		86
	300			400			87.5
	208		270		900		82.8
	230			300			84
Z4-400-42	435		540		1300	7100	90.8	94
	480			600			92
	390		450		1400		88.6
	430			500			90
Z4-400-41	316		360		1200		87.7
	350			400			89
	235		270		900		84
	260			300			85.4
Z4-450-22	472		540		1200	6500	90.8	138
	520			600			92.1
	408		450		1400		90
	450			500			91.3
	362		360		1200		88.1
	400			400			89.4
Z4-450-21	253		270		900		85.8
	280			300			87.1
Z4-450-32	500		540		1200	7100	90.8	156
	550			600			92
	453		450		1300		90
	500			500			91.4
	408		360		1200		88.5
	450			400			89.7
	309		270		900		85.9
	340			300			87.1
Z4-450-31	200		180		600		81.3
	220			200			82.6
Z4-450-42	545		540		1100	7800	90.3	174
	600			600			91.5
	500		450		1100		90
	550			500			91.4
	453		360		1200		88.9
	500			400			90
	345		270		900		86.8
	380			300			88.1
Z4-450-41	235		180		600		81.7
	260			200			83