VTB Non-contact Backup Battery Equipment
Non-contact control technology for DC electromagnet has been patented (patent authorization No.02224064. 0), featuring no electric arc or spark, no noises, no mechanical contacts, quick action, long service life, few maintenance and energysaving owing to a feed back of the electromagnet remanence to the power net; the constant current source can guarantee the attraction power constant without distinct descending caused by the ascending of electromagnet temperature; with short demagnetization time and quick material discharge, it is more suitable for extremely frequent operation, and realizes non-gap operation. It adopts programmable control technology to guarantee the control precise, flexible and reliable, simplifies the outside connection and reduces the failure points. It adopts thyristor to control obverse and inverse excitation, saving the traditional DC contactor and greatly reducing the facility bulk; the equipment service life has been prolonged because of adopting static switch mode instead of dynamic switch mode. Except for greatly reduce maintenance cost and service workload, another big advantage is that the control mode can be improved to strong excitation mode or magnetism adjustable mode according to the user’s need without exchanging old control system or adding other hardwares, just by modifying the program; featuring high general-use and extensibility, it is very convenient for users to choose and use.
Note for Model Selection
1.The rated voltage of the electromagnet is the same as that of he control unit; the total amount of cold-state current
(consumption power) of the electromagnet should be less than or equal to the output current (power) of the control unit.
2. The matched windlass for the cabinet is usually a DC brake, otherwise a mateched inverter power supply is needed for AC brake.
3. Unstated sustaining time will be produced as our general products.
4. If the working temperature is above 40°C, or there are special requirements for modification, capacity enlarge and etc, pleasestate when place any order.
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Performance contrast list for with-contact and non-contact
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