When the reducer is running, there shall be no dust, water stains and other debris at least 3 meters around the air inlet to prevent the reducer from being pulled out, short circuit medium or damaging the wire insulation layer, causing inter turn short circuit, increasing current, rising temperature and burning the reducer. Therefore, in order to ensure that the reducer has enough insulation resistance and good ventilation and cooling environment, the reducer can maintain a safe and stable working state during long-term operation.

2. Check and ensure the planetary reducer starting equipment works normally

Always check whether the contactor contact, coil core and wiring screw are reliable, and whether the mechanical parts are flexible, so as to keep them in good technical condition, so as to ensure that the reducer will not be burnt when starting.

The technical status of the reducer starting device plays a decisive role in the normal starting of the reducer. Practice has proved that most of the burned reducers are caused by improper operation of starting equipment. If the starter has open phase start, the contactor contact will be triggered by arcing.

The maintenance of starting equipment is mainly cleaning and fastening. If the contactor contact is not clean, the contact resistance will increase, resulting in heat burn contact, resulting in phase loss and burning down the reducer; The core of the contactor suction coil is rusty and dusty, which will cause the coil to be loosely sucked in and damaged. Noise, increase coil current, burn coil and cause failure.

3. Check the transmission and rotating parts of the planetary reducer

4. Planetary reducer current detection

When the planetary reducer runs beyond the rated current, the coil temperature will rise, resulting in insulation deterioration Therefore, the load should be reduced to make it lower than the rated current. In addition, when the voltage between the phases of the three-phase reducer is unbalanced, the unbalanced current will be generated, and the temperature rise will be unbalanced, resulting in local overheating. Therefore, the current value of each phase should be measured and recorded regularly. For three-phase asynchronous reducer, the difference between the current of any phase of three-phase current and the average current of other two phases shall not exceed 10% to ensure the safe operation of reducer. If it exceeds, it means that the reducer has a fault and needs to find out the cause in time and eliminate it.

Check whether the transmission is flexible It is reliable; The concentricity of coupling is standard; The flexibility of gear transmission. If any jam is found, stop immediately to find the cause and run.

If the reducer is overloaded, the main reason is that the towing load is too large, the voltage is too low or the mechanical blockage caused by the driver. If the overload time is too long, the deceleration opportunity will absorb a large amount of active power from the grid, the current will increase sharply, and the temperature will rise accordingly. At high temperature, the insulation of the reducer will age and burn out. Therefore, please keep the reducer running at rated current at all times.