The explosion-proof performance of the WOLONG Ac motor is in accordance with GB3836.1-2010 “Explosive Atmosphere Part 1: General Requirements for Equipment” and GB3836.2-2010 Explosive Atmosphere Part 2: Equipment Protected by Flameproof Enclosure “d”. Its explosion-proof mark is “Ex d I Mb” (“Exd I”-before 2010). It is suitable for the place where the explosive gas mixture of methane or coal dust exists.
Y B S S - 250 - 4G
Y B - Asynchronous motor, flameproof type
S- Conveyor
S- Water cooling
250 - Power(kW)
4- Poles
G- Plateau
Ex dⅠMb
Ex--Explosion Protection Mark
d--Type of Explosion Protection(Explosion-proof Type)
Ⅰ -- Electrical Apparatus Class(ClassⅠ)
Mb -- Equipment Protection Degree
Basic parameters:
Rated voltage: 660/1140V, 1140V, 3300V
Rated frequency: 50Hz
Rated power: 160~1600kW, 110/55~1000/500kW
Number of poles: 4, 4/8
Thermal classification: 180(H)
Temperature rise limit: 135K
Installation method: IMB10, IMB5, IMB3, IMB35
Protection level: IP55
Cooling method: IC3W7
Ambient air temperature: 0~+40℃
Operation mode: S1
Altitude: ≤1000mm
Indoor (standard configuration)
Explosion-proof mark (standard configuration): Exd I Mb