The power level of the three-phase offset paper determines the working current, and is tested with a 0.8 kW tap water-pressed offset paper using a current transformer. In order to ensure safety, one output of the secondary side of the transformer is grounded. Adjust RD4 to make the inverting input terminal 4 V. Counterclockwise adjust RD1, RD2, RD3 to the lowest end. Turn on the offset paper power supply. After the offset paper is running normally, Then adjust RD1, RD2, RD3 separately so that the voltage of the non-inverting input terminal of each comparison amplifier is about 3 V (this value can be set according to the maximum value of the normal working current of the offset paper). At this time, the offset paper should start and run normally. . Artificially disconnect the offset power supply from the offset paper to make the offset paper run out of phase. After 3 s, the time relay should be able to pick up the alarm and cut off the offset paper supply circuit to protect it. Next, let's take a closer look at the difference between light paper and offset paper.
The performance characteristics of offset paper: dry steam heating method, the main principle is that when adding steam to the air, it will not affect the air temperature, but if the humidification amount in the air is very high, and the machined workshop personnel and indoor environment In the case of self-heating, the temperature will rise slightly. The area of ​​the machine shop for machining is large, and the amount of humidification of the air offset paper is large, resulting in a temperature increase of 1-2 °C. At this time, it is necessary to cool down the treatment, which in turn will increase the energy consumption of the mechanical equipment.
Especially when the two seasons transition or the outdoor temperature is not uniform, the method of increasing the fresh air ratio can be used to reduce the indoor air temperature. However, if the outdoor air is dry in this season, if the wind is excessive, the burden of the offset paper will be obviously increased. As a result, the temperature in the machine shop is greatly increased, and the humidity is difficult to guarantee. On the one side, it is necessary to humidify with dry steam, and on the other side, the treatment method of turning off the refrigerant to cool down will cause great energy consumption of mechanical equipment.
By comparing the humidification methods of various offset papers, the use of gas-water mixing cold fog humidification is the best way to control the temperature and humidity with high precision machining in the mechanical manufacturing workshop. Because: the effect of spray and humidification of offset paper is not obvious, the water consumption of mechanical equipment is huge; the control of wet film humidification is not accurate enough (for hysteresis control), and the wet film itself uses hydrophilic material to filter air, dust More, long-term operation of mechanical equipment is prone to bacteria, easy to cause respiratory problems in mechanical designers; high-pressure micro-fog humidification requires a large amount of work, high failure rate and not stable enough. The gas-water mixing cold mist humidification method has the characteristics of sensitive sensitivity, strong ability to generate fine mist, and linear adjustment of spray volume. It can fully guarantee the temperature and humidity control requirements of the mechanical manufacturing workshop, and can completely replace the dry steam offset paper in spring and autumn. With significant energy savings.
Over-voltage offset paper can effectively limit the atmospheric over-voltage and the operating over-voltage caused by various vacuum circuit breakers, and can reliably limit the interphase and relative over-voltage, and it has a small outline structure, insulation and high voltage resistance. Features, greatly utilizing and reducing the space used, so it is widely used in the protection of electrical equipment in the fields of electric power, metallurgy, petrochemical, mining, construction and environmental protection.
Article source address: http://
A pet Strap Dog Harnessis is equipment consisting of straps of webbing that loop nearly around-that fasten together using side release buckles-the torso of an animal.
These strap dog harnesses generally are made to have both a strap on the chest in front of the forelimbs, and a strap around the torso behind the forelimbs, with straps in between connecting these two. Having a D-ring suitable for (pet tags and) a leash to clip to, they are most often used to restrain an animal, but dogs also particularly wear them to assist a person with a disability or haul people and items. There is also the lifting harness for dogs with disabilities, covered in this article.
Some come in different sizes, although many are size-adjustable with tri-glide slides to loosen or shorten the straps` length. The straps may come in a range of different colors, and some have reflective coating.
Strap Harness,Reflective Dog Harness,Premium Dog Harness,Top Product Dog Harness
Yangzhou Pet's Products CO.,LTD , https://www.yzpqpets.com