YBK3 serles explosion-proof three-phase asynchronous motor for underground mine
Category:
Explosion-proof Motors For Coal Mines
Keywords:
YBK3 serles explosion-proof three-phase asynchronous motor for un
Details
Overview
YBK3 Series (Frame Size 80–355) Flameproof Three-Phase Asynchronous Motors for Underground Coal Mines (hereinafter referred to as: Motors) are suitable for use as general-purpose power equipment in electrical installations within coal mines containing methane or coal dust. The explosion-proof performance of the motors complies with GB3836.1-2021 “Explosive Atmospheres - Part 1: Equipment - General Requirements,” GB3836.2-2021 “Explosive Atmospheres - Part 2: Equipment Protected by Flameproof Enclosures ‘d’,” and MT451-2011 “General Technical Specifications for Safety Performance of Flameproof Low-Voltage Three-Phase Asynchronous Motors for Coal Mines.” The explosion-proof marking is II 2G Exdb I Mb, suitable for locations in coal mine underground mining faces where methane combustible gas or coal dust mixed with air forms an explosive gas atmosphere.
Basic Parameters
Rated Voltage: 208V, 220V, 230V, 240V, 345V, 380V, 400V, 415V, 440V, 460V, 480V, 525V, 550V, 660V, 690V, 750V, 1140V, 208/240V, 220/440V, 220/380V, 230/400V, 240/415V, 380/460V, 400/690V, 415/720V, 380/660V, 660/1140V, 220/440/380V
Rated Frequency: 50Hz, 60Hz, 70Hz
Power Range: 5.5-315kW
Insulation Class: F
Protection Rating: IP55
Cooling Method: IC411
Explosion-Proof Rating: II 2G Ex db I Mb
Scope of Application and Operating Conditions
1 Motor Operating Environment Conditions
1.1 Ambient air temperature varies seasonally, generally not exceeding -15 to +40°C;
1.2 Ambient atmospheric pressure: 80 to 110 kPa;
1.3 Altitude not exceeding 1000 m;
1.4 Maximum relative humidity of ambient air not exceeding 95% (at +25°C);
1.5 Underground mining workings in coal mines where explosive hazards exist due to combustible gases, vapors, mists, dust, or fibers mixed with air within the upper and lower explosive limits.
2 Electrical Conditions for Motor Operation
2.1 The motor is rated for continuous operation (S1 duty cycle).
2.2 The motor stator windings employ an F-class insulation system. When operating at minimum airflow within specified conditions, the bearing temperature (measured thermometer method) shall not exceed 95°C, the maximum surface temperature of the enclosure (measured thermometer method) shall not exceed 150°C, and the stator winding temperature rise (measured resistance method) shall be evaluated at 85K.
Special environmental conditions
W Outdoor type,
TH Humid tropical type,
THW Outdoor humid tropical type,
TA Dry tropical type,
TAW Outdoor dry tropical type,
T Tropical type,
TW Outdoor tropical type, and
WF1 Outdoor moderate corrosion-resistant type, among other climatic conditions.
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Nanyang Explosion-Proof is a specialized manufacturer of explosion-proof motors and high-efficiency motors integrating design, production, sales, and service.
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Address: Intersection of Weiwu Road and Yangcheng Road, Industrial Park, Shangshui County, Zhoukou City, Henan Province, China