Protection of frequency converter of hydraulic universal testing machine
Protection of frequency converter of hydraulic universal testing machine
The frequency converter is a power control equipment that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. The application of frequency converters in hydraulic universal testing machines is very critical. Therefore, it must be The protection work of the inverter is in place. 1. First, before the daily maintenance of the hydraulic universal testing machine inverter, it must be ensured that the total power supply of the equipment is completely cut off; 3-30 minutes after the inverter display completely disappears (according to the power of the inverter) 2. Pay attention to check the grid voltage, improve the surrounding environment of the inverter, motor and circuit, regularly remove the internal dust of the inverter, and reduce the failure rate of the inverter as much as possible by strengthening the equipment management. 3, in order to solve the hydraulic universal testing machine For the related environmental issues of the inverter, an air conditioning system can be installed, and positive pressure fresh air can be used to improve the environmental conditions. 4. In order to reduce the corrosion of corrosive gases to the components on the circuit board, the production of hydraulic universal testing machine inverters can also be required. Manufacturers carry out anti-corrosion processing on circuit boards, and spray anti-corrosion agents after repairs, which effectively reduces the failure rate and improves the efficiency of use. 5. While maintaining the hydraulic universal testing machine, carefully check the frequency converter and regularly send power. Working with motor at 2hz low frequency for about 10 minutes to ensure that the inverter works normally.
Hydraulic universal testing machines have very high accuracy requirements.
The hydraulic system is the power drive mechanism of the tensile testing machine.
The specific application of the electronic universal testing machine in the automobile manufacturing process: The electronic universal testing machine needs to be used for automobile parts.
Wave soldering refers to the molten solder (lead-tin alloy), sprayed by electric pump or electromagnetic pump into the solder wave required by the design, can also be formed by injecting nitrogen into the solder pool, so that it is pre-loaded The printed board of the component realizes the soft soldering of the mechanical and electrical connection between the solder end or the pin of the component and the pad of the printed board through the solder wave.
Electronic universal testing machine is a necessary equipment to control the quality of products.
The calibration operation of the electronic universal testing machine is still relatively unfamiliar to friends who use it for the first time.
Selective wave soldering defects and their prevention.
Testing machine, broadly speaking, is an instrument that verifies the quality or performance of a product or material according to the design requirements before it is put into use.
The tensile force is not an accurate value after being measured by the testing machine, and subsequent calculations are required to get the desired value.
In order to prevent accidents, safety protection devices are installed in the design of the testing machine.
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