The protection degree is weather-protected type 1 (drip-proof) and the rated voltage
is 460V, 60Hz. We can also provide rated 380/660V, 50HZ on request. Adopting
internationally advanced structure of anti-reverse, the motors are exact and reliable
for preventing the reversal. The motors are employed with the oil-immersed bearing
lubricating construction, which makes the bearings running in a condition of satisfactory cooling and lubrication so as to ensure longer operating duration of
the bearings. The motors are characterized by high efficiency, large starting torque,
low temperature rise, leakage free, quiet running, and low vibration. Through
our innovative research and development, series OHS deep-well pump motors transcend the traditional mode of motor construction, that leads to a stable and
increased efficiency of the motors.

Series OHS motors vertical hollow-shaft three-phase motors squirrel cage induction
motors specially for driving vertical deep-well turbine pumps.

As a domestically initiative product, the motors reach the international advanced
level of the latest NEMA Standard. After being fitted with long-shaft typed pumps,
the motors are widely used in pumping underground water in mine, city, farm,
and factory.