Shell:Light
aluminum alloy shell shall be adopted which is light but hard and
fit for the use in the terrible work environment with a high heat
dissipation rate and all tightness design. Inverse phase sequence protecting
device:It is the
special electrical installation which control the circuit not to
work in case of wiring error in the power supply. Limit
switch:The
limit switch device is installed where the weight is lifted on and
off to make the motor to stop automatically so as to prohibit the
chains from exceeding for safety. *4V/*6V
device:It is used
to prohibit the emergencies from occurring in case of the leakage
in the switch.
