Brand introduction of power arrester
Power arrester is a device to prevent lightning and other internal overvoltage from invading equipment and protect the equipment on the circuit. The brands of power arresters are Elton, Anpuxun, corbett, Rekexing, Zhongguang, Yilong, Gersheng, Zhongpu, Tongwei, Top, Dean, Aobo, Phoenix, Suo Le, ABB, Schneider and LEUTRON.
Brand and price introduction of power arrester (price source network, for reference only)
The price of power arrester is mostly around several hundred yuan, and the main influencing factor is the brand and model of power arrester. In addition, the number of batches will also affect the price of some power arresters, that is, the more you buy, the cheaper the price will be. Below, the brand and price of power arrester are introduced as follows: (unit: yuan)
Victor? DW 1- 100/4P power arrester
185.00
(2) Teng Tai? CHT 1-A25 power arrester
220.00
(3) corbett? KBT-D220/2/60 Power Arrester
360.00 (batch number 1-49? answer
340.00 (starting batch 50-99? Answer? )
320.00 (initial quantity ≥ 100? answer
(4) Wepson? WPX-BSPC20-275/ 10 power arrester
62 1.00 (batch 6- 19? answer
5 18.00 (batch 20-99? answer
485.00 (initial quantity ≥ 100? answer
(5) Phoenix/Phoenix? 2839347? PT？ 2-PE/S-230AC-ST power arrester
550.00 (batch number 1- 1? answer
530.00 (initial quantity ≥2? answer
(6) Opel/Aobo? V20-C/2-75V power arrester
780.00
(7)ABB？ OVR？ T2？ 1N- 15-275？ Power arrester
888.00
(8) Sun Anxun? AM40A？ Power arrester
999.00
(9)OBO？ MC-50( 10/350) Power Arrester
3500.00
Several points of selecting power arrester
1, the selection principle of power arrester: (1), according to the lightning surge intensity in the lightning activity area where the protected equipment is located; (2) According to the lightning impact degree of the protected equipment; (3), according to the importance and value of the protected equipment
2. Precautions for the selection of power arrester: The geographical location of China and the United States is very similar. Because of their vast territory, both of them have great differences in lightning intensity in the world, especially in the southern region, where the lightning intensity is high and the subsequent lightning is serious. Therefore, the design of lightning arrester in jocelyn, USA, completely adopts the unique patented technology-matrix structure, which can withstand repeated lightning strikes and has obvious advantages. Europe is located in the north, the degree of lightning disaster is quite low, and the product design is mostly integral structure. When installed in a thunderstorm area, once the product is struck by lightning, it will not be able to protect the equipment from lightning damage when it is subsequently struck by lightning.
Introduction of installation method and matters needing attention of power arrester
Introduction of installation method of power arrester
1. Install the power arrester in parallel. The charcoal machine is installed at the back end of the switchboard or knife switch (circuit breaker) in the classroom of the satellite teaching observation point, and fixed on the wall with four sets of M8 plastic expansion and self-tapping screws.
2. The installation size (70× 180) should match the corresponding installation holes on the lightning arrester.
3. Connect the power supply. The live wire of the power arrester is red, the neutral wire is blue, and the cross-sectional area is BVR6mm2. Multi-stranded copper conductor, carbon machine ground wire is yellow-green, and the cross-sectional area is BVRlOm? M2. Multi-stranded copper conductor with connection length ≦500mm. If the standard of ≤500mm or less cannot be met due to conditions, it can be extended appropriately, but the principle of shortest connection should be followed, and the rotation angle should be greater than 90 degrees (arc angle instead of right angle).
4. The power supply is connected with the lightning rod. One end of the connecting wire of the power discharger is directly and firmly crimped to the terminal of the power discharger. The grounding wire is connected to the independent grounding network or the three-phase power grounding wire provided by the school.
Precautions for installation
1. The power arrester must be installed through the 35mm guide rail.
2. Connect the phase line of the power cord to the "L" wiring hole of the power lightning protection device, then connect the zero line of the power cord to the "N" wiring hole of the power lightning protection device, and finally lead out the grounding wire from the "PE" wiring hole of the power lightning protection device and connect it to the lightning protection grounding bus or the lightning protection grounding bar. ? 3. The minimum cross-sectional area of the lightning arrester connecting wire shall comply with the relevant provisions of the national lightning protection project.
4. When installing the power arrester, be sure to disconnect the power supply before installation, so as to avoid accidents!
5. The power arrester can provide remote communication interface according to the needs of the project, in which "COM" is the neutral point, "NC" is the normally closed point and "NO" is the normally open point.
6. When the fault indication window of the power arrester shows red, it means that the existing components in the power arrester are damaged, which will lead to the poor lightning protection effect of the power arrester and must be replaced immediately.
7. When the line length between the switching arrester and the voltage-limiting arrester is less than 10m, and the line length between the voltage-limiting arrester is less than 5m, a decoupling device should be installed between the two arresters.
8. The connecting wire of the power arrester should be straight, and the sum of the connecting length of the power arrester to the power line and the connecting length of the power arrester to the equipotential connection device should be less than 0.5m.
9. If the requirement of 0.5m cannot be met, Kevin wiring method can be adopted.
The above is the description of the brand and product price of power arrester in this paper, which is for reference only. For the lightning protection price device of power supply, Bian Xiao suggested that if you are interested, you should first know its latest market price and specific parameters.