I do not buy the wrong time, the two do not buy your fault. Ji 宁浩博 Mining Machinery Co., Ltd. in the "strong quality of the image outside," and "quality first, credit first" business purpose of implementing the principle of "relying on quality of survival, relying on the credibility of development" for our customers providing quality products and services, sincerely welcome new and old customers to visit the plant, business negotiations. You have any questions about the company and products need advice, please feel free to contact me. Let me take you to understand this product: JHH intrinsically safe circuit connection box circuit connection box JHH mine intrinsically safe circuit connection box is provided by the Franciscan 宁浩博 Mining Machinery Co., Ltd., if you type this on JHH An electrical connections box intention JHH or want to know more information about intrinsically safe circuit connection boxes such as: price, model, pictures, please call us, negotiate! 13165376735 Liu JHH intrinsically safe circuit junction box description: JHH series mining intrinsically safe junction box is mainly used for containing gas or coal dust explosion hazard of coal mine, a coal mine intrinsically safe wiring devices for coal mine monitoring system two-way to four-way junction intrinsically safe two-wire line and four-core cable, sub-line use. JHH (original model KLH12) mine intrinsically safe circuit with a junction box is used to connect intrinsically safe signal transmission cable. JHH intrinsically safe circuit junction box applications: JHH series mining intrinsically safe junction box is mainly used for containing gas or coal dust explosion hazard of coal mine, coal mine is intrinsically safe wiring devices for intrinsically safe wiring mine monitoring system two-core and four-core cable through to two-way connection, sub-line use. The junction box cable import and export management, wide coverage and other characteristics of the product have five rows of terminals. Junction boxes have inlet and outlet bell 13 different sizes, suitable for HUYV series mine communications cables and wiring PUYV series mining division of signal cables can only be used in explosion-proof Certificate of Conformity with the intrinsically safe communication system extend to the intrinsically safe circuits or shorten the cable or line. JHH intrinsically safe circuit junction box technology parameters, the contact resistance: <0.5Ω plastic (ABS) in fill plus retardant, antistatic agents, surface insulation resistance of less than 1 × 106Ω, explosion-proof type: Exib I φmmφ7 maximum outside diameter -φ15 Dimensions mm81 * 81 * 41/111 * 111 * 41/111 * 111 * 41 plus JHH-5, JHH-6, JHH-7 and the like. Others can be customized. JHH intrinsically safe circuit junction box Usage: 1, based on the number of cable diameter select the appropriate junction box. 2, the junction box can be placed floor can also be linked to put fixed in the roadway. 3, first unscrew the compression nut during installation, you can remove the cover. 4, first unscrew the introduction of wiring devices or compression splint compression nut, remove the washers, seals, and set in place the appropriate cable diameter, the cable penetration in the lead unit. 5. Strip the cable, and the cable connector according to the location of access points tied into a small wire to. 6, according to the requirements of connection between the cable access terminals respectively. 7. After connecting, tighten the compression nut and compression splint. 8, close the cover, note pad good seal tighten the nut. Warning: The wiring should be coupling operation in case of power failure. It should be noted as well as the seat cover and seal the bell after wiring is complete. The main products 宁浩博 Mining Machinery Co., Ltd. Jinan currently operating mining equipment, railway equipment, explosion-proof motors, drilling machines, pneumatic machinery, machining parts, belt conveyor integrated protection device, many types, quality and cheap. Please call the above is a detailed description of this product, if you have any questions, please call us or come visit our company. Haobo company has been adhering to: customer is God, is the enterprise god, more customers, more prosperous companies. Haobo people have always believed: the principle of quality first, to ensure the effective operation of the system. Company products are sold in Shandong, Guizhou, Xinjiang, Yunnan, Sichuan, Jiangsu, Guangxi, Inner Mongolia, Shaanxi, Shanxi, Liaoning, Hebei, Henan, Guangdong and other provinces in the country, sincerely welcome friends from all over the country to inquire business negotiations.