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◆   brief introduction
this series is suitable to operate in such an indoor environment with an altitude not more than 1,000m and a coolant temperature not more than 40℃, with less dust, and without vapour, acid, alkali or corrosive/explosive gas. the rated voltage is 6000v for this series, and we can design with 3000v and 10000vaccording to the requirements from the customers. its allowable voltage deviation range is 5%, rated supply frequency 50hz and rated power factor 0.9 (lead).
the motor has a cylindrical shaft extension, whose rotation direction shall be consistent with that on the nameplate, ordinarily anticlockwise when seen from the end of collecting ring, and also, we can produce the ones with a clockwise rotation. when a coupling is used to connect the motor and a mill, the motor’s shaft extension shall not bear extra radial or axial force.
the series adopts a stationary controllable silicon exciter.
it is allowed to be directly started at full voltage, when such starting mode is not allowed due to the capacity of the power grid of one user, it can be started at reduced voltage, at this time, the decrease of its starting current is in direct proportion to its terminal voltage while the decrease of starting torque is in direction to the square of its terminal voltage.
stator leads: 6 leads, respectively u1, v1, w1, u2, v2 & w2, all of which are led out by a high-voltage cabtyre cable from the terminal clamp at the bottom of the frame, and can be led out by a junction box customized according to customer requirements.
pedestal bearing: ring-oiled or combined bearings adopted, installed between baseboards and underlaid with insulating padding plates to prevent shaft current.

◆   structure
the ventilation pattern for the series can be an open-type natural ventilation one or a totally closed duct ventilation one.
frame: welded by steel plates, leading-out terminal at the bottom.
stator: its iron core is made of piled fanning strips stamped with 0.5mm low-loss silicon steel plate, and is separated by radial duct spacer; stator windings adopt formed double-layer short-pitched coils with an insulation class of b or f (temperature rise assessed according to class b), that are helpful to prolong service life; and because winding terminals have been fixed and strapped reliably and processed with solvent-free vpi (vacuum pressure impregnation) and have gone through many times of tests for turn-to-turn impulse withstand voltage and withstand voltage to ground, the motor has excellent and reliable insulation performance, high mechanical strength and strong moisture proofing.
rotor: its magnetic poles made of stamped steel plates which are installed at rotor field yoke together with pole coils with an insulation class of b or f. when a customer wants to adopt a pneumatic clutch, we can design a revolving shaft or a shaft with punched holes according to customer requirements.

◆   purpose
the series is a kind of large-sized 3-phase ac synchronous motor mainly used to drive mills in mines, including grate ball mill, rod mill and coal mill.

large-sized 3-phase synchronous motor series tm (tdmk) special for mills in mines

型号 model	额定功率 rated power kw	额定电压 rate voltage kv	额定电流 rated current a	额定转速 rated speed r/min	功率因数（超前） power factor (lead)	堵转转矩额定电流 locked torque/ rated torque	牵入转矩额定转矩 pull-in torque/ rated torque	先步转矩额定转矩 pull-out torque/ rated torque	重量 weight t	备注 remarks
tdmk350-32	350	6	41	187.5	0.9	6.72	1.1	3.56	10.7
tdmk400-32	400	6	47	187.5	0.9	6.54	1.132	4.06	11.3	轴打孔 shaft with punched holes
tdmk400-32	400	10	28	187.5	0.9	6.67	1.09	3.21	12.2
tdmk500-32	500	10	35	187.5	0.9	6.24	1.03	3.5	13.7
tdmk500-36	500	6	58	167	0.9	6.27	1.04	3.0	12.7
tdmk630-36	630	6	74	167	0.9	6.13	1.02	2.9	13.5
tdmk800-36	800	6	93	167	0.9	5.9	1.0	2.7	16.0
tdmk800-36	800	10	55.8	167	0.9	6.67	1.08	3.47	16.8
tdmk1000-36	1000	6	115	167	0.9	6.1	1.0	3.0	16.0
tdmk1000-36	1000	10	69	167	0.9	5.0	1.0	2.6	17.7
tdmk1600-36	1600	6	181	167	0.9	6.7	1.19	2.98	31.0
tdmk1250-40	1250	6	143	150	0.9	6.17	1.0	3.36	17.7

outside view and mounting dimension of large-sized 3-phase synchromoter for tm (tdmk) series mine mill

型号model	a	ab	b	b	d	d1	e	h	h	l	l1	l2	l3	t
tdmk350-32	2750	3040	1810	45	200	2700	350	630	350	2250	590	650	800	210
tdmk400-32	2750	3040	1810	45	200	2700	350	630	350	2250	590	650	800	210
tdmk400-32	2750	3040	2010	45	200	2700	350	630	350	2450	590	750	900	210
tdmk500-32	2750	3040	2170	50	220	2700	350	630	350	2650	590	800	950	231
tdmk500-36	3200	3590	1920	50	220	3200	350	630	350	2360	620	700	800	231
tdmk630-36	3200	3590	1920	50	220	3200	350	630	350	2360	620	700	800	231
tdmk800-36	3200	3590	2020	56	250	3200	400	630	350	2500	660	750	850	262
tdmk800-36	3200	3590	2220	56	250	3200	400	630	350	2740	660	850	950	262
tdmk1000-36	3200	3590	2020	56	250	3200	400	630	350	2500	660	750	850	262
tdmk1000-36	3200	3590	2440	56	250	3200	400	630	350	2980	660	900	1050	262
tdmk1600-36	4230	4590	2540	70	320	4000	470	630	350	3100	770	950	1100	334
tdmk1250-40	4230	4590	2840	63	280	4000	500	630	350	3450	820	1150	1200	292

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large-sized 3-phase synchronous motor series tm special for mills in mines

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