The requirement of electric hoist power supply use 3P +PE power supply system (3P is Power supply wire, PE is ground wire), stressed to provide the ground wire, the track will not be used as a ground protection circuit. Under normal operating conditions, the voltage fluctuation at the access point of the lifting machinery shall not exceed 5% of the rated value.
In the power system of the world, there are two kinds of power frequency, one is 50 Hz, and the one is 60 Hz. Industrial voltage is different in each country, for example it is 3 phases, 380 V, 50 HZ in China, but in Philippines it 3 phases, 220 V ,60 HZ. Although both are located in Asia, and the distance is very close, but there is a great difference between the voltage and frequency. The maximum safe voltage for human is 50 V. So the control voltage must be less than 50 V.
The civilian voltage is single phase and the frequency is the same with industrial frequency. Usually the industrial voltage is 1.73 times the civilian voltage.
|Country||Industrial voltage||Civilian voltage|
|China||380 V-50 HZ/td>||220 V-50 HZ|
|UK||400 V-50 HZ||230 V-50 HZ|
|Malaysia||415 V-50 HZ||240 V-50 HZ|
|Singapore||400 V-50 HZ||230 V-50 HZ|
|Saudi Arabia||380 V-60 HZ||220 V-60 HZ|
|United Arab Emirates||380 V-50 HZ||220 V-50 HZ|
|Mexico||460 V-60 HZ||220 V-60 HZ|
|Chile||380 V-50 HZ||220 V-50 HZ|
|Egypt||380 V-50 HZ||220 V-50 HZ|
|New Zealand||415 V-50 HZ||240 V-50 HZ|
|Brazil||380 V-60 HZ||220 V-60 HZ|
|Algeria||400 V-50 HZ||230 V-50 HZ|
In use process, electric hoist is hard to avoid failure. In order to do well to the safe operation of electric hoist, timely and accurately process all kinds of faults has become an important part of construction production.
|Fault||Main cause||Elimination methods|
|Press the button, the motor doesn’t work||1. Not connect to the power supply
2. Lack of phase
3. The power supply voltage is too low
|1. Connect to the power
2. Check main loop and control loop
3. Adjust the power supply voltage
|When Press the button, the motor start reluctantly and large noise, and it can't afford to load||The power supply voltage is too low||Adjust the power supply voltage|
|The hoist shell is charged or traveling motor has grunts||1. I steel off ground
2. The electrical box shell off ground
3. Motor or electrical devices have insulation damage
|1. I steel grounding
2. Check whether the beams tread has poor electrical conductivity things, should be cleared
3. Check and repair the insulation damage location
When the motor voltage and frequency don’t match with power network voltage and frequency, the motor will be easy to burn. So if you want to buy a hoist, please tell us the correct voltage and frequency. Please also check our electric hoist products for different voltage.
|Item||Wire rope electric hoist||Electric chain hoist||Mini electric hoist|
|Phase||Three phases||Three phases or single phase||Single phase|
|Voltage||As your request||As your request||220 v/230 v|
|Control voltage||24 V/36 V/48 V|
|Frequency||50 HZ or 60 HZ|
|Electric brand||Chint (China)/ Schneider(France)/ Siemens(Germany)|