IE4 Explosion Proof Motor YBX4

YBX4-280S-2/4/6/8 IE4 Explosion Proof Motor

YBX4-280S-2/4/6/8 IE4 Explosion Proof Motor

Frame size	H280mm	No. of poles	2P, 4P, 6P, 8P
Rated power	37KW~75KW	Protection Grade	IP55
Rated voltage	380V/660V	Rated Frequency	50HZ/60HZ
Mark of Explosion-proof	Exd I Mb, Exd II BT4Gb, Exd II CT4 Gb
Insulation	155(F)/180(H) Grade	Mounting type	IM B3
Cooling type	IC411	Connection	△/Y
Duty	S1	Energy efficiency	IE4
Vibration	≤1.8mm/s	Ambient temperature	-15℃ ～ +40℃
Altitude	≤1000m	Brand name	SIMO MOTOR
Humidity	Average monthly peak relative humidity is 90%

*Note: Motors can be customized according to customer’s requirements.

Motor Description

YBX4 series of high efficiency and energy saving flame proof three-phase asynchronous electric motor is independently developed by our company. This series of Flame-proof motor accords with GB/T 755 Rotation Electric Motor: Rating And Performance GB/T 3836.1-2021 Explosive Environment Part 1: General Requirements, GB/T 3836.2-2021 Explosive Environment Part 2:Equipments Protected by Explosion Proof Housing “d” and MT451-2011 Coal Mine Explosion Proof Low Voltage Three Phase Asynchronous Motor Safety Performance General Technical Regulations. The Flame-proof marks are:

Ex db l Mb、 Ex db ll A T4 Gb、 Ex db ll B T4 Gb、 Ex db l C T4 Gb.
Ex db l Mb is suitable for electric equipment used in gas environment and underground areas of coal mine with Mb equipment protection grade.
Ex db ll A T4 Gb is suitable for factory used equipment of category ll class A, temperature class: T1, T2, T3T4 explosive gas mixed places with Gb equipment protection grade
Ex db ll B T4 Gb is suitable for factory used equipment of category ll class B, temperature class: T1, T2, T3T4 explosive gas mixed places with Gb equipment protection grade, which can replace equipment of category Ⅱclass A.
Ex db ll C T4 Gb is suitable for factory used equipment of category Ⅱclass C temperature class: T1, T2, T3, T4 explosive gas mixed places, with Gb equipment protection degree.

The housing of this series of motor adopts high strengthened gray casting steel and high quality anti-corrosion painting progress, so that it can bear the explosive mixture which getting into the housing through any contacting face or structure clearance from exploding inside without any housing damage. Also it will avoid the ignition of explosive gas environment which caused by one or multiple kinds of gas or stream so as to ensure the safety of environment. This series of motor has advantages such as excellent flame-proof performance, high reliability, compact structure, high efficiency, energy-saving, safe, environment protection, low vibration, low noise, easy to install and maintain, etc.

This series of motor can be applied to drive different kinds of general machines, such as ideal transportation machineries of compressor, pump, crusher, windlass, centrifuge, cutting machine and so on.

Outline Dimensions

Motor Parameters

Type	Rated Power	Rated Current	Speed	Sync. Speed	Eff.	Power Factor	Locked Torque	Locked Current	Max. Torque	Rated torque	No-load Noise	Weight
	kw	A	r/min	r/min	%	Cosφ	Rated Torque	Rated Current	Rated Torque	N•m	dB（A）	Kg
YBX4-280S-2	75	133.9	2980	3000	95.6	0.89	1.8	8.5	2.3	239	91	642
YBX4-280S-4	75	136.4	1490	1500	96	0.87	2	8.5	2.3	478	80	680
YBX4-280S-6	45	86.9	990	1000	94.8	0.83	2	8.5	2	430	78	605
YBX4-280S-8	37	77.4	740	750	93.1	0.78	1.8	7.9	2	471	76	575