Electromagnetic noise is generated by any electrical equipment. Both the elevator feedback and the elevator itself generate electromagnetic noise during operation.
In the feedback device, it is necessary to convert DC power into AC power at exactly the same frequency and phase as the power supply grid. A large amount of electromagnetic noise (interference) will be generated during the conversion process.
Electromagnetic interference increases the additional losses of the sending, transmitting, supplying and consuming equipment, causing the equipment to overheat, reducing the efficiency and utilization of the equipment. These interferences affect the operation of the elevator. Therefore, any electrical equipment connected to the elevator equipment must in principle meet the "electromagnetic compatibility standard". When meeting the electromagnetic compatibility standard, the interference of the feedback device to the elevator is controlled within the permissible range.
Shenzhen Hexing Gang's elevator feedback has passed three high-grade electromagnetic compatibility standards:
EN12015, EN12016, EN6100-3-2, EN6100-3-3, EN50178, EN55022 Class A, (American electromagnetic compatibility standards, European elevator-specific electromagnetic compatibility standards, European elevator equipment safety standards).
Therefore, the elevator feedback of Shenzhen Hexinggan can meet the world standards and will not affect the safe operation of the elevator.
Note: According to strict standards, the equipment that must meet these standards in the elevator control system are: frequency converter, AC contactor, elevator controller, elevator air conditioning, elevator motor, television used in the elevator, camera, etc. Elevator emergency power supply, IC card access control system.