YBD2 seres change-pole multi-speed flameproof three phase asynchronous motors

YBD2 series change-pole multi-speed

flameproof three phase asynchronous motor is

designed on the basis of YB2 series flameproof

motors. It uses the simplex winding polarity reversal

method to realize the speed transformation.

Different poles offer relative speed.

YBD2 series motor are suitable for mechanical

equipments which required speed regulation,

mainly used in coal, oil and natural gas,

petrochemical and chemical industries, usually

used to drive pumps, fans, compressors and other

transmission machinery.

YBD2 series motor could marked as Exd I、

ExdIAT4or ExdIBT4. Exd I is applied in the non-

excavation working condition and coal mine with

methane or coal dust, Exd IAT4 and ExdIBT4 are

applied in the condition of explosion- proof gas

compound with Factory II type, Grade A & B,

temperature T1, T2, T3 and T4.