GB/T 37319-2019 in English

1. Background and significance of standard formulation

With the development of high-rise and intelligent buildings, elevators, as important vertical transportation tools, have increasingly higher technical requirements for energy conservation and emission reduction. The formulation of the national standard GB/T 37319-2019 "Elevator Energy-Saving Inverter Power Supply Device" aims to standardize the technical requirements, test methods and inspection rules of elevator energy-saving inverter power supply devices and promote the green and sustainable development of the elevator industry.

2. Comparison of standard frameworks

3. Interpretation of the main contents of the standard

3.1 Model specifications and basic parameters

The model specifications of the elevator energy-saving inverter power supply device are composed of letters and numbers. The basic parameters include AC input, output voltage and frequency, energy storage inverter operation time, etc. Table 1 lists the technical requirements of various parameters in detail to ensure the stable performance of the equipment under different operating modes.

3.2 Technical requirements

The standard puts forward clear requirements on the environmental adaptability, input and output characteristics, protection functions, etc. of the power supply device. For example:

• Environmental conditions:Specify the temperature, humidity and altitude range for normal use, storage and transportation.
• Protection functions:Including short circuit protection, overload protection, phase loss protection, etc., to ensure the safe operation of the equipment.
• Display function:It is required to have the display function of the AC input voltage, output voltage and current, and support the communication interface.

3.3 Test method

The standard specifies the specific conditions and operating steps of each test, for example:

• Energy storage inverter operation time test:Under normal AC input, the power supply device should be able to support the elevator to run continuously for at least 30 minutes.
• Emergency inverter operation test:When the AC power is interrupted, the power supply device should be able to continuously supply power to the elevator to ensure that the car runs safely to the designated floor station.

4. Implementation suggestions

4.1 Design and selection stage

When designing and selecting equipment, a power supply device that meets the technical parameters should be selected in strict accordance with the standard requirements, and it should be ensured that it has sufficient energy storage capacity and protection functions.

4.2 Installation and commissioning phase

During the installation process, attention should be paid to the control of environmental conditions to avoid the impact of high temperature, high humidity or corrosive gases on the equipment. During commissioning, the reliability of the automatic switching function and the protection function should be checked.

4.3 Maintenance and testing phase

Periodically maintain and test the power supply device, including insulation resistance, withstand voltage test and other items, to ensure the long-term stable operation of the equipment.