Stage electric hoist brake is set upside down

Stage electric hoist can be used while being hung upside down can also be applied, in order to ensure proper use of brakes should meet certain safety rules, the following stage to introduce you to lift hoist  brake is set upside down common sense, for your reference.
Stage electric hoist power-driven hoisting mechanism and operating agencies should set the brake. After an accident may result in significant risk to or loss of electric hoist lifting mechanism, the system must be set each drive two separate working brake.
Stage electric hoist used as a lifting mechanism lifting the molten metal, its brake setting shall meet the following requirements:

a. When the nominal weight greater than 5t,chainb lock the stage hoist addition to setting a working brake, it must also set up a safety brake, safety brake is set in the electric hoist low level, when the working brake failure or transmission parts broken off, can be reliably amount of support to live

Constant load;
b. When the nominal weight is less than or equal to 5t, the stage setup work except electric hoist brake, but also should be in the low-level safety brake is set, otherwise the stage  rope hoist  shall be 1.5 times the nominal weight by design, or use of selected units of the crane lifting capacity

Is the maximum weight of 1.5 times, and with clear signs from the weight of the maximum weight allowed.