Elevator energy-saving equipment suppliers remind you that those who frequently ride elevators know that elevators require regular maintenance and upkeep in order to maintain their normal and safe operation. Elevator maintenance mainly maintains its normal operation. In case of emergency situations such as power outages, fires, etc. An elevator emergency device is needed to handle it.
In addition, with the development of technology and the increasing awareness of environmental protection, green and energy-saving elevators have gradually entered people's sight. The elevator feedback emergency device organically combines the elevator feedback function with the elevator emergency power supply function into one system. From the perspective of safety and energy conservation, emergency power supply for elevators can be achieved; It can also achieve elevator feedback, effectively converting the regenerated electrical energy stored in the elevator inverter capacitor into AC power and returning it to the grid, turning the elevator into a green "power plant" to supply power to other equipment. So what is the main function of the elevator feedback emergency device?
1. Effectively activate emergency devices
The initiation of power grid faults is the main purpose of elevator feedback emergency devices, and the initiation of the external power grid during normal elevator faults is actually useless. Some manufacturers only deceive consumers by introducing the concept of "fault rescue emergency devices". How can a simple inspection of the elevator's safety circuit and door lock circuit be used to activate the "emergency" device to complete rescue work for a malfunction that occurs when the elevator suddenly stops running due to a height level fault?
The main function of elevator emergency rescue devices is to effectively detect power failures and reliably engage in emergency rescue. However, due to many problems in the practical use of phase loss detection circuits, some manufacturers' products cannot effectively detect phase loss and cannot be started. Installing emergency devices is also ineffective.
2. Reliable completion of emergency rescue
Reliable completion of emergency rescue is a luxury for some products in the market. During emergency situations, the speed of elevator movement should be monitored to ensure safety, which is a condition for emergency equipment. Some emergency devices only consider the product qualified when the elevator can move to the door area during user acceptance, without conducting qualified testing and judgment on the number of elevator passengers and battery capacity. When passengers reach full load or the capacity of the battery decreases, elevator loss of control may occur, which can lead to danger due to ineffective control.
3. Significant energy-saving effect
The elevator feedback emergency device adopts advanced algorithms to achieve complete sine wave energy feedback and sine wave three-phase emergency power output. Transforming the regenerated DC electrical energy during elevator operation into AC electrical energy synchronized with the power grid and sending it back to the grid, the regenerative energy recovery efficiency is as high as 97.5%, with significant energy-saving effects and a comprehensive energy-saving efficiency of 20-50%; The device has a reactor and a noise filter, which can be directly connected to the power grid without causing interference to the power grid and surrounding electrical equipment; Simultaneously adopting electromagnetic isolation technology to isolate the battery from three-phase electricity, ensuring the safety of both the battery and the frequency converter.
Providing elevator safety emergency rescue, closed-loop control, detecting emergency operating speed, and preventing overspeed during emergency rescue are the most basic requirements. In addition, providing "safe, stable, and reliable" products is also the most basic condition for ensuring elevator safety. The use of elevator feedback emergency devices not only ensures safety in emergency situations, but also has significant energy-saving effects in daily elevator use. At the same time, it can reduce the investment or use of cooling equipment, lower elevator failures, reduce elevator maintenance costs, and extend the service life of other components in the machine room, saving maintenance costs.