The YGMD sealed water-cooled dual speed three-phase asynchronous motor is suitable for bell jar bright annealing furnaces and is suitable for gloss annealing equipment for copper and steel materials under inert gas protection. It is an improved version of the YGKT series, integrating water cooling and sealing. It can remove the hood furnace and external water tank. The end cover and base of the motor are water-cooled, and the structure of the motor is sealed, forming a sealed whole with the bright annealing furnace.

Electric motors have the advantages of small size, light weight, reasonable performance, high reliability, and easy use and maintenance. Its comprehensive technical and economic indicators have reached the advanced level in China. The YGMD series hood annealing furnace uses sealed water-cooled electric motors as variable pole variable speed motors. YGMDI180-250-8/4-pole is a single winding dual speed motor, 4-pole is a 2Y connection, 8-pole is a Y connection, YGMD250-8/6-pole is a dual winding dual speed motor, and 6-pole and 8-pole are respectively Y connections. The electric motor starts at low speed and switches poles to run at high speed when the furnace temperature reaches 200 degrees Celsius or above.
The rated voltage of the motor is 380V and the rated frequency is 50Hz.
The insulation level of electric motors is divided into F and H levels: the working system of electric motors is continuous working system S1; the protection level of electric motors is IP65; The installation type of the electric motor is V3.

The sealed water-cooled motor used in YGMD bell type annealing furnace is cooled by circulating water at the bearing chamber where the machine base shell and flange end cover are installed, adapting to the high temperature environment of the bell type annealing furnace. The water jacket of the machine base and end cover can withstand a pressure of 3Mpa, and the pressure of water in the water jacket is 1-1.5Mpa. The upper and lower inlet pipes and junction box are on the same side, and the upper and lower outlet pipes are on the same side.
The working environment of the electric motor contains inert gas. The structure of the electric motor is sealed and can withstand a pressure of -0.1-0.13 Pa, ensuring that the gas inside the motor cannot leak out.
The bearing structure of the electric motor has an oil injection device, which should be refilled once every six months of operation. The electric motor is equipped with inlet bearings and high-temperature resistant lubricating grease.

Technical parameters of sealed water-cooled dual speed motor for YGMD hood annealing furnace:

Overall dimensions:






Sealed water-cooled dual speed motor for YGMD hood annealing furnace