YBDF2 series valve electric device with three-phase asynchronous motorDetailed product description：

The explosion-proof performance of YBDF2 motor and valve electric device assembly, as well as the explosion-proof performance of its derivative series, comply with the provisions of GB3836.1-2010 "Part 1: General Requirements for Equipment for Explosive Environments" and GB3836.2-2010 "Part 2: Equipment Protected by Explosion proof Enclosures", and also comply with the provisions of IEC79-1. It is made into an explosion-proof type with the explosion-proof mark ExdIIBT4Gb, suitable for factory Class II A and B, temperature groups T1~T4, and explosive mixtures of flammable gases or vapors with air (according to ordering requirements, the explosion-proof mark can also be made as ExdIMb, suitable for explosive mixtures containing methane or coal dust). The underground location of the coal mine.

Usage conditions for three-phase asynchronous motors used in YBDF2 series valve electric devices
2.1 The ambient air temperature is -20~+40 ℃;
2.2 Altitude not exceeding 1000m;
2.3 The rated voltage is 380V;
2.4 Rated frequency 50Hz;
2.5 Synchronous speed 1500r/rain;
2.6 The motor rating is based on the short-term working system (S2), with a time limit of 10 minutes, and can be started directly at full voltage;
2.7 The motor adopts Class F insulation. When the ambient air temperature and altitude meet the requirements of Articles 2.1 and 2.2, the temperature rise limit of the stator winding (resistance method) shall not exceed 90K.

Introduction to the Structure of Three phase Asynchronous Motors for YBDF2 Series Valve Electric Devices
3.1 The protection level of the casing after assembly of the electric motor and valve electric device is IP55, and it can also be manufactured into other protection levels;
3.2 Material of motor casing: Non explosion proof type shall be made of gray cast iron not lower than HT150, explosion-proof type II shall be made of gray cast iron not lower than HT200, and explosion-proof type I shall be made of gray cast iron not lower than HT250. The surface of the machine base has no heat dissipation fins, and its smoothness can reduce the accumulation of rainwater, dust, and corrosive media on the surface of the motor, which is beneficial for the corrosion prevention, heat dissipation, and cleaning of the motor;
3.3 The structure and installation type of the motor is IMB5, with a horizontal installation base without feet and an end cap with a flange. Other structures and installation types can also be derived;
3.4 The electric motor has a cylindrical shaft extension, which is driven by a spur gear and can also derive a dual axis extension structure;
The stator winding of the 3.5 motor is made of high-strength polyester enameled round copper coins, and the rotor is a cast aluminum squirrel cage rotor. The cooling method is IC0041;
3.6 The stator winding lead wire of the motor is led out through the flange end face, and can also be derived from other parts or with a junction box;
3.7 The motor is equipped with a skeleton type oil seal at the shaft penetration point, which can prevent lubricating oil in the gearbox from seeping into the interior of the motor.