Electric Motor Factory

• Application: Industrial
• Speed: Low Speed
• Number of Stator: Three-Phase
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: YRKS630-4
• Function: Control
• Casing Protection: Closed Type
• Number of Poles: 4
• Starting Mode: Direct on-line Starting
• Brand: Semc
• Name: Electric Motor Factory
• Brand of The Machine: Semc
• System: Electric Motor
• Quality: Best
• Transport Package: Pllywood
• Specification: rated frequency 50 HZ, power 250 KW
• Trademark: SEMC
• Origin: China
• HS Code: 85011020
• Production Capacity: 10, 000
• Package Size: 500.00cm * 700.00cm * 600.00cm
• Package Gross Weight: 5000.000kg

Product Description

Working Principle of an Induction Motor

The motor which works on the principle of electromagnetic induction is known as the induction motor. The electromagnetic induction is the phenomenon in which the electromotive force induces across the electrical conductor when it is placed in a rotating magnetic field.
 

The stator and rotor are two essential parts of the motor. The stator is the stationary part, and it carries the overlapping windings while the rotor carries the main or field winding. The windings of the stator are equally displaced from each other by an angle of 120°.

The induction motor is the single excited motor, I.e., the supply is applied only to the one part, I.e., stator. The term excitation means the process of inducing the magnetic field on the parts of the motor.

When the three phase supply is given to the stator, the rotating magnetic field produced on it. The figure below shows the rotating magnetic field set up in the stator.

Consider that the rotating magnetic field induces in the anticlockwise direction. The rotating magnetic field has the moving polarities. The polarities of the magnetic field vary by concerning the positive and negative half cycle of the supply. The change in polarities makes the magnetic field rotates.

The conductors of the rotor are stationary. This stationary conductor cut the rotating magnetic field of the stator, and because of the electromagnetic induction, the EMF induces in the rotor. This EMF is known as the rotor induced EMF, and it is because of the electromagnetic induction phenomenon.

The conductors of the rotor are short-circuited either by the end rings or by the help of the external resistance. The relative motion between the rotating magnetic field and the rotor conductor induces the current in the rotor conductors. As the current flows through the conductor, the flux induces on it. The direction of rotor flux is same as that of the rotor current.

Now we have two fluxes one because of the rotor and another because of the stator. These fluxes interact each other. On one end of the conductor the fluxes cancel each other, and on the other end, the density of the flux is very high. Thus, the high-density flux tries to push the conductor of rotor towards the low-density flux region. This phenomenon induces the torque on the conductor, and this torque is known as the electromagnetic torque.

The direction of electromagnetic torque and rotating magnetic field is same. Thus, the rotor starts rotating in the same direction as that of the rotating magnetic field.

The speed of the rotor is always less than the rotating magnetic field or synchronous speed. The rotor tries to the run at the speed of the rotor, but it always slips away. Thus, the motor never runs at the speed of the rotating magnetic field, and this is the reason because of which the induction motor is also known as the asynchronous motor.

 

 

NO.	Electric  Furnace  Type	Input  power (KW)	input  voltage (V)	Input  current (A)	Rated  power (KW)	DC  current (A)	DC  voltage (V)	Melting  rate (T/H)	working  frequency (Hz)	working  voltage (V)	cooling water  pressure(MPa)		Rated  capacity (T)	Power  consumption (KWH/T)
											Power  Supply	Furnace  body
1	GW-0.25-160/1JJ	180	380 (6 Pulse)	256	160	320	500	0.24	1000	750	0.1~0.15	0.25~0.3	0.25	790
2	GW-0.5-250/1JJ	280	380 (6 Pulse)	400	250	500	500	0.4	1000	1500	0.1~0.15	0.25~0.3	0.5	770
3	GW-0.5-250/1J	280	380 (6 Pulse)	400	250	500	500	0.4	1000	1500	0.1~0.15	0.25~0.3	0.5	770
4	GW-0.75-400/1JJ	400	380 (6 Pulse)	650	400	800	500	0.6	1000	1500	0.1~0.15	0.25~0.3	0.75	770
5	GW-0.75-400/1J	400	380 (6 Pulse)	650	400	800	500	0.6	1000	1500	0.1~0.15	0.25~0.3	0.75	770
6	GW-1-500/1JJ	550	380 (6 Pulse)	800	500	1000	500	0.8	1000	1500	0.1~0.15	0.25~0.3	1	750
7	GW-1-750/1JJ	800	380/690 (6 Pulse)	1200/ 700	750	1500/ 850	500/ 880	0.9	1000/ 500	1500/ 2600	0.1~0.15	0.25~0.3	1	720/660
8	GW-1-750/1J	800	380/690 (6 Pulse)	1200/ 700	750	1500/ 850	500/ 880	0.9	1000/ 500	1500/ 2600	0.1~0.15	0.25~0.3	1	720/660
9	GW-1.5-1000/0.5JJ	1100	690 (6 Pulse)	912	1000	1140	880	1.2	500	2600	0.1~0.15	0.25~0.3	1.5	700
10	GW-1.5-1000/0.5J	1100	690 (6 Pulse)	912	1000	1140	880	1.2	500	2600	0.1~0.15	0.25~0.3	1.5	700
11	GW-2-1500/0.5JJ	1650	690 (6 Pulse)	1360	1500	1700	880	1.7	500	2600	0.1~0.15	0.25~0.3	2	675
12	GW-2-1500/0.5J	1650	690 (6 Pulse)	1360	1500	1700	880	1.7	500	2600	0.1~0.15	0.25~0.3	2	675
13	GW-2-2000/0.5JJ	2200	690 (6 Pulse)	1400	2000	2275	880	1.9	500	2600	0.1~0.15	0.25~0.3	2	650
14	GW-3-2500/0.5JJ	2750	690/950 (6 Pulse)	2275/ 1700	2500	2840/ 2080	880/ 1250	2.56	500	2600/3200	0.1~0.15	0.25~0.3	3	610/560
15	GW-3-2500/0.5J	2750	690/950 (6 Pulse)	2275/ 1700	2500	2840/ 2080	880/ 1250	2.56	500	2600/3200	0.1~0.15	0.25~0.3	3	610/560
16	GW-4-3000/0.5J	3300	690/950 (6 Pulse)	2730/ 2040	3000	3410/ 2500	880/ 1250	3.2	500	2600/3200	0.1~0.15	0.25~0.3	4	610/560
17	GW-5-4000/0.5J	4400	950 (6 Pulse)	2300	4000	3330	1250	5	500	3400	0.1~0.15	0.25~0.3	5	600/550
18	GW-6-4000/0.5J	4400	950 (12 Pulse)	2300	4000	3330	1250	5	500	3400	0.1~0.15	0.25~0.3	6	600/550
19	GW-8-5000/0.5J	5000	950 (12 Pulse)	3400	5000	4200	1250	7~8	500	3400	0.1~0.15	0.25~0.3	8	600/550
20	GW-10-6000/0.5J	6300	950 (12 Pulse)	3750	6000	4600	1250	8.5~9	500	3400	0.1~0.15	0.25~0.3	10	600/550
21	GW-12-8000/0.25J	8000	950 (12 Pulse)	4900	8000	6000	1250	9~10.5	250	3400	0.1~0.15	0.25~0.3	12	600-550
22	GW-15-8000/0.25J	8000	950 (12 Pulse)	4900	8000	6000	1250	9~10.5	250	3400	0.1~0.15	0.25~0.3	15	600-550
23	GW-15-10000/0.25J	10000	950 (24 Pulse)	6500	10000	8000	1250	13~15	250	3400	0.1~0.15	0.25~0.3	15	600-550
24	GW-18-12000/0.25J	12000	950 (24 Pulse)	8160	12000	10000	1200	15~17	250	3400	0.1~0.15	0.25~0.3	18	600-550
25	GW-20-12000/0.25J	12000	950 (24 Pulse)	8160	12000	10000	1200	17~19	250	3400	0.1~0.15	0.25~0.3	20	600-550
26	GW-25-14000/0.25J	14000	950 (24 Pulse)	9460	14000	11600	1200	19~21	150~200	3400	0.1~0.15	0.25~0.3	25	600-550
27	GW-30-16000/0.2J	16000	950 (24 Pulse)	10850	16000	13300	1200	21~23	150~200	3400	0.1~0.15	0.25~0.3	30	600-550
28	GW-40-20000/0.2J	20000	950 (24 Pulse)	13545	20000	16600	1200	25~27	150~200	3400	0.1~0.15	0.25~0.3	40	600-550
29	GW-50-22000/0.2J	22000	950 (24 Pulse)	14932	22000	18300	1200	25~28	150~200	3400	0.1~0.15	0.25~0.3	50	600-550

Note:
(1) GW - means medium frequency induction furnace, - 1 - means induction furnace capacity of 1 ton, - 500 - means furnace rated power of 500 KW, / 1 - means furnace operating frequency of 1000 Hz, / 0.5 - means melting furnace frequency of 500 Hz, - J - means hydraulic tilting furnace (furnace shell is steel shell), - JJ - means mechanical tilting furnace. (the shell of the furnace is aluminum alloy).

(2) The above quoted price is for routine configuration. Other configurations can be added, such as leak alarm, water temperature alarm, furnace switch, cover mechanism, lining ejector and transformer, cooling device (open and close cooling tower, closed cooling tower, plate heat exchanger)

3) If necessary, send technicians to carry out the commissioning: the domestic section is free; the overseas section travel expenses, accommodation and food are borne by the user and each person is subsidized 150 US dollars per day.

4) I quote EX-W at a price including simple packing, including shipping charges to Shanghai port area and all inland charges in China.

V) The above electric furnace voltage levels are 380V, 690V and 950/1000V, and the frequency is 50Hz. If the user equipment requirements are different from the above voltage levels and frequencies, each item needs to be increased by 15000USD.