Explosion Proof Three-phase Induction Motor, YB2 Series Manufacturer

Explosion Proof Three-phase Induction Motor, YB2 Series

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Introduction

The YB2 series of explosion-proof three-phase induction motors are flame-proof motors that meet advanced international standards. These explosion-proof motors feature high efficiency, high locked-rotor torque, low noise and vibration, and reliable operation. The motor output and mounting comply with IEC standards and GB3836.2 standards for electrical apparatus in explosive situations. the flame-proof feature makes these induction motors ideal for coal mines where methane and coal dust may be present or in factory spaces where flammable gases may be present.

Features:
1. IP55 protection rating.
2. Vertical and horizontal cooling ribs on frame.
3. Ball bearings, small diameter fans, and slot-skewing slopes for low vibration.
4. F class insulation. Above sea level and with standard ambient temperatures, the temperature rise limit of the stator windings is 80K (resistance method). For a frame size of 315L2 and for 4-pole motors with a frame size of 355, the temperature rise limit is 105K.
5. The terminal box has three terminals (for single voltage) or six terminals (for double voltages) and is located on the top of the motor. Armoured cable can also be used.
6. The direction of rotation of the motor for frame sizes H63 to 280 and H315 to 355 motors (4 to 10-poles) may be clockwise and anticlockwise. For frame sizes 315 to 355 2-pole motors, the direction of rotation is clockwise as viewed from the shaft extension. If the motor is required to rotate anticlockwise, please specify when ordering.

Ambient Conditions

Ambient Conditions
Ambient air temperature changes with season, but does not exceed 35℃ (underground coal mine) or 40℃ (factory space), and is not lower than -15℃.
Altitude above sea level: up to 1000m.
Note: when ambient air temperature and altitude are different from the above, refer to GB755.
In the wettest month, the monthly-average maximums relative humidity is 90%, and the minimum temperature should not exceed 25℃ in this month (in factory spaces). In the underground coal mine, the highest relative humidity does not exceed 95%.
In underground coal mines (non-excavating conditions) or factories with easy-ignition and explosive gas or steam, the temperature class is T1~T4.
Rated frequency: 50Hz.
Rated voltage: 380V, 660V and 380/660V.
Note: If you have special requirements for frequency, voltage, ambient air temperature and altitude, etc. please specify them when ordering.

Mounting Arrangement
There are 4 basic mounting arrangements and 10 variant mounting arrangements as shown in the following table:

Main Technical Data

Technical Data
The B14 motor arrangement features a frame with feet and end-shield with flange (with threaded holes).

Frame size	Mounting and overall dimensions
Frame size	A	B	C	D	E	F	G	H	K	M	N	P	S	T	n	Pipe thread for cable entry	AB	AC	AD	HD	L
63M	100	80	40	11	23	4	8.5	63	7	75	60	90	M5	2.5	4	M24 × 1.5	130	150	165	230	270
71M	112	90	45	14	30	5	11	71	7	85	70	105	M5	2.5		M24 × 1.5	140	155	165	250	300
80M	125	100	50	19	40	6	15.5	80	10	100	80	120	M6	3		M30 × 2	165	165	180	230	330
90S	140	100	56	24	50	8	20	90		115	95	140					180	180		350	360
90L	140	125	56	24	50		20	90		115	95	140					180	180		350	385
100L	160	140	63	28	60		24	100	12	130	110	160	M8	3.5			200	205		400	440
112M	190	140	70	28	60		24	112	12	130	110	160	M8	3.5			245	230	200	420	460
Note: The numerators of fractions in the table give the data for 2-pole motors and the denominators of fractions give the data for motors with more than 2 poles.

B3 mounting arrangement features a frame with feet and end-shield without flange.

Frame size	Mounting and overall dimensions
	A	B	C	D	E	F	G	H	K	Pipe thread for cable entry	AB	AC	AD	HD	L
63M	100	80	40	11	23	4	8.5	63	7	M24 × 1.5	130	150	165	230	270
71M	112	90	45	14	30	5	11	71			140	155		250	300
80M	125	100	50	19	40	6	15.5	80	10	M30 × 2	165	165	180	230	330
90S	140		56	24	50	8	20	90			180	180		350	360
90L		125													385
100L	160	140	63	28	60		24	100	12		200	205		400	440
112M	190		70					112			245	230	200	420	460
132S	216		89	38	80	10	33	132			280	270		450	510
132M		178													550
160M	254	210	108	42	110	12	37	160	15	M36 × 2	330	325	220	520	670
160L		254													710
180M	279	241	121	48		14	42.5	180			355	360		550	730
180L		279													750
200L	318	305	133	55		16	49	200	19	M48 × 2	390	400	250	645	805
225S	356	286	149	55/60	110/140	16/18	49/53	225			435	450		690	865
225M		311													860/890
250M	406	349	168	60/65	140	18	53/58	250	24	M64 × 2	490	500	300	730	945
280S	457	368	190	65/75		18/20	58/67.5	280			545	560		810	1010
280M		419													1060
315S	508	406	216	65/80	140/170	18/22	58/71	315	28		640	630	400	1020	1320/1350
315M		457													1350/1380

315L		508													1490/1520

355S	610	500	254	75/95		20/25	67.5/86	355	28	M72 × 2	740	750	500	1080	1570
355M		560													1650
355L		630													1750
Note: The numerators of fractions in the table give the data for 2-pole motors and the denominators of fractions give the data for motors with more than 2 poles.

B35 mounting arrangement features a frame with feet and end-shield with flange (with through holes).

Frame size	Mounting and overall dimensions
	A	B	C	D	E	F	G	H	K	M	N	P	S	T	n	Pipe thread for cable entry	AB	AC	AD	HD	L
80	125	100	50	19	40	6	15.5	80	10	165	130	200	12	3.5	4	M30 × 2	165	165	180	320	330
90S	140		56	24	50	8	20	90									180	180		350	360
90L		125																			385
100L	160	140	63	28	60		24	100	12	215	180	250	15	4			205	205		400	440
112M	190		70					112									245	230	200	420	460
132S	216		89	38	80	10	33	132		265	230	300					280	270		450	510
132M		178																			550
160M	254	210	108	42	110	12	37	160	15	300	250	350	19	5		M36 × 2	330	325	220	520	670
160L		254																			710
180M	279	241	121	48		14	42.5	180									355	360		550	730
180L		279																			750
200L	318	305	133	55		16	49	200	19	350	300	400				M48 × 2	390	400	250	645	805
225S	356	286	149	55/60	110/140	16/18	49/53	225		400	350	450			8		435	450		690	865
225M		311																			860/890
250M	406	349	168	60/65	140	18	53/58	250	24	500	450	550				M64 × 2	490	500	300	730	945
280S	457	368	190	65/75		18/20	58/67.5	280									545	565		810	1010
280M		419																			1060
315S	508	406	216	65/80	140/170	18/22	58/71	315	28	600	550	660	24	6			640	630	400	1020	1320/1350
315M		457																			1350/1380
315L		508																			1490/1520
355S	610	500	254	75/95		20/25	67.5/86	355		740	680	800				M72 × 2	740	750	500	1080	1570
355M		560																			165
355L		630																			1750
Note: The numerators of fractions in the table give the data for 2-pole motors and the denominators of fractions give the data for motors with more than 2 poles.																						1650

Mounting arrangements B5 or V1 feature a frame without feet and end-shield with flange (with through holes).

Frame size	Mounting and overall dimensions
	D	E	F	G	M	N	P	S	T	n	Pipe thread for cable entry	AC	AD	L
														B5	V1
63	11	23	4	8.5	115	95	140	10	3	4	M24 × 1.5	130	170	270	310
71	14	30	5	11	130	110	160					145		300	340
80	19	40	6	15.5	165	130	200	12	3.5		M30 × 2	165	240	330	375
90S	24	50	8	20								180	260	360	405
90L														385	430
100L	28	60		24	215	180	250	15	4			205	300	440	485
112M											M36 × 2	230	310	460	520
132S	38	80	10	33	265	230	300					270	320	510	590
132M														550	630
160M	42	110	12	37	300	250	350	19	5			325	360	670	730
160L											M48 × 2			710	770
180M	48		14	42.5								360	370	730	800
180L														750	820
200L	55		16	49	350	300	400					400	445	805	875
225S	55/60	110/140	16/18	49/53	400	350	450			8	M64 × 2	450	465	865	935
225M														860/890	930/960
250M	60/65	140	18	53/58	500	450	550					500	500	945	1035
280S	65/75		18/20	58/67.5								560	550	1010	1100
280M														1060	1150
315S	65/80	140/170	18/22	58/71	600	550	660	24	6			630	705	_-	1340/1370
315M															1420/1450
315L															1510/1540
355S	75/95		20/25	67.5/86	740	680	800				M72 × 2	750	725		1600
355M
355L															1780

Note: Motors can be customized for noise, degree of protection, and greasing and draining oil devices. This data is for reference only. Specifications are subject to change from order to order.