【YBX-315S-10 - YBX3-355L2-10】 【45-185Kw】【61.2-251.7 HP】 FLAMEPROOF THREE-PHASE ASYNCHRONOUS MOTOR

YBX3 series high efficiency flameproof of three-phase asynchronous motor is our upgraded explosion-proof motor basic series from YB2 series,the series motor has the advantages of small volume, light weight, beautiful appearance, reliable operation, long service life, excellent performance as well as convenient installation, operation and maintenance.

The series motor's power level, installation dimensions comply with IEC stand are, with coincident corresponding relation ship with German standard DiN42673.it is conducive for the export equipment matching and introduction of spare parts for equipments.

The series motor's flameproof performance is in accordance withGB3836.1-2010 Explosive atmospheres-part 1:Equipment. General requirements & GB3836.2-2010 Explosive atmosphere-Part 2: equipment with flameproof enclosure "d "protection, it was also made into flameproof type in accordance with 60079-1,BS4683 & EN50018 provision. The flameproof mark is Ex d | Md, Ex d |A T4 GB, Ex d IIB T4 GB, which is applicable for explosive atmosphere.

For Ex d I Md, equipment installed at coal mine methane explosive environment, has " high " protection level. This level has sufficient safe performance,it cause impossibility to be the ignition source during equipment normal running, or under expected failure conditions for the period between gas suddenly appeared and equipment power off, it is applicable for electrical equipment for non excavation working face.

Ex d |A T4 GB, Ex d IIB T4 GB are applicable for equipments with explosive gas environment except coal mine, with " high " protection level, it is not a source of ignition during normal running or under expected fault conditions.

Based on YBX3 basic series motor, it can also be made into YBX3-Woutdoor type, YBX3-TH indoor humid tropics type, YBX3-WTH outdoor humid tropics type, YBX3-TA indoor dry tropics type, YBX3-WTA outdoor dry tropics type, YBX3-T indoor tropics type, YBX3-WT outdoor tropics type 8YBX3-WF1 outdoor medium corrosion type etc. climate conditions.

The series motor efficiency index reaches grade 3 efficiency rating specified in The minimum allowable values of energy efficiency and the energy efficiency grades for small and medium three-phase asynchronous motors, GB 19613-2020 standard, which is equivalent to the lE3 of IEC60034-30.

Construction features

1. The flameproof construction for Ex d I Md, Ex d IA T4 Gb, Ex d IIB T4 Gb are available.1)Ex d I Md is applicable for non-excavation area environment under coal mine well with methane or coal dust explosive mixture.2)Ex d |A T4 Gb, Ex d IIB T4 Gb is suitable for category ll , Class A & Category ll , Class B temperature category T1,T2T3,T4 AT environment with explosive mixture existence.
2. The degree of protection is lP55, lP56, lP66 for motor main enclosures.
3. The cooling form is IC411.
4. The stator widings are of Class F insulation and ensiures a large margin of safety in temperature rise and long service life.
5. A cylindrical shaft extension is equipped on motors, which is driven by coupling spur gearing.
6. The stator windings are wound with pilyester enamel round wire of high strength and then treated with the progerss of vacuum-pressure impregnation (VIP), to make them become a solid integral. Therefore the winding insulation is excellent in electrical and mechanical properties,moisture resistance and thermal stability.
7. The rotors are of cast-aluminum, and dynamically balanced t make the motor operate smoothly with small vibration and low noise.
8. The stator and rotor cores are laminated with high-class electrical steel sheet with high permeability and low loss, thus makes the motors possess low toss and high efficiency.
9. The motors are fitted with low vibration and low noise bearings special for motors, For the motors of frame size 132 and below, bilaterally shielded ball bearings are used and corrugated spring washers at the driving ends pressed on bearings with proper pressure to restrain effectively the vibration and noise rpoduced during motor's operation. For the motors of frame size 160 and above, the bearings with inner and outer covers are used and retaining rings at bearing position are equipped on shafts to prevent the rotor efficiently from moving axially. In order to operate safely and reliably, the bearings of the motors frame size 160 and above are provided with greasing attachments, which are of the use to drain or replenish the lubricating grease without stopping the motors. For the frame size 250 and above, the positions for mounting bearing temperature monitoring censers are preliminary left.
10. Motor fan, air hood: the series motor adopts anti static plastic fan,with small rotational inertia and low loss. The series fan is connected with shaft by key with reliable operation. Air hood is of steel plate structure. Lt achieves largest ventilation area under the premise of preventing certain size of foreign matter from invasion, which obtains smooth air path.

Service conditions

Electrical conditions

1. Rated voltage:380、660、1140、380/660、660/1140V
2. Rated frequency: 50Hz
3. Duty type: S1 Continuous running duty-type S1

Circumstance conditions

The altitude is up to 1000m above seal level. The ambient temperature, which is subject to seasonal variation, belong to indoor circumstance of -20℃~+40℃.

YBX3 is the basic type, suitable for indoor circumstance

YBX3-W for outdoor circumstance

YBX3-TH for indoor tropical humidity circumstance

YBX3-WTH for outdoor tropical humidity circumstance

YBX3-TA for indoor tropical arid circumstance

YBX3-WTA for outdoor tropical arid circumstance

YBX3-T for indoor tropical arid circumstance

YBX3-WT for outdoor tropical circumstance

YBX3-WF1 for outdoor middle-class-chemical corrosion circumstance

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