Floor-KHX48 intrinsically safe communication line lightning arrester

Mr. Wang Tel: 15990168251 KHX48 intrinsically safe communication line arresters 1 Introduction, overview dispatching communication system is a coal mine production safety, "six" system which essential systems, the production of communication, rescue protection, dispatching essential contact channel. Therefore, the communication system of large transmission lines to protect the number of communication cables is very important. When you carry the energy of lightning struck a large lightning protection system is weak communication transmission lines, especially in hitting a certain height of overhead transmission lines later, although the transmission line using a shielded cable, and grounded asked to do (if shielding effect is not good, poor quality ground is more dangerous), but the danger of lightning energy can still fleeing into line and enter the equipment is running, ranging from causing damage to the equipment, while there may be due to damage caused by a spark outside leak, caused by an electric spark underground gas and coal dust explosion. Therefore, the state "Coal Mine Safety Regulations" four hundred and fifty ninth pursuant to article: communication lines to be fitted with fuses and lightning device into the wellhead, is to avoid the risk, in order to guarantee secure communication lines. Communication line arrester, integrated communication lines of different voltage levels of lightning and fuse protection. Over-voltage clamp, over-current fuse, lightning, high current discharge directly to the ground. To ensure the absolute safety of the communication line. In order to better identify voltage communication line of a road, type II increases the communication line are idle, call, ringing instructions. Type III adds intelligent communication line management system, and in the absence of coupling 安全珊 configuration of the module can be equipped with coupling Anquan Shan. Intelligently display line status of a road management system in a communication line inside. Once a line fails, the system can suggest and to the police. 2, model name and classification of a) classification proof type: Mine intrinsically safe explosion-proof mark: Exib I Mb b) Dimensions and weight Dimensions Weight wall-mounted 580mm × 205.5mm × 700mm approximately 15Kg floorstanding about 643mm × 493mm × 965mm 30Kg 3, the product structure of the machine safety arrester housing made of stainless steel. According to installation into wall-mounted and floor-mounted two, beautiful appearance, easy installation. Motherboard inside the box containing the communication line arrester protection, communication line monitoring board, communication line card line input and output modules, into the trough, the trough and the like. 4, the working principle and function of the device on the communication lines of the wellhead automatic clamping voltage exceeds the threshold; the communication line to the wellhead off automatically fuse when the current exceeds the starting current; for lightning surge voltage causes and some man-made accidents will power line fault by hooking harm caused by the high-power and communication lines and other equipment switch and the introduction of high amplitude pulse surge interference signals and other equipment are available through into the well at ground level, or line circuit discharge. So overcurrent, overvoltage, lightning and other harmful signal exclusion in the wellhead to ensure the safety of coal mine workplace. Use of a communication line voltage state analysis to identify the communication line voltage state, and displayed on a board in the form of indicators, including type II indicator means: idle (on-hook) state -> bright yellow call Status -> Red light ringing -> Lamps shining failed state -> Off-lamp type II above 8 DIP switch meaning, if the communication line is too long, more than 10Km, communication line failure excessive consumption affects call quality can toggle this switch to increase call quality. Under normal circumstances, will not affect call quality (single channel module line attenuation value of not more than 0.05dB, the current value is about 0.6mA). The above communication line management system software will prompt the appropriate above. The main technical parameters 5.1 working environment a) ambient temperature of -40 ℃ ~ 80 ℃; b) relative humidity of 95%; c) the atmospheric pressure is 80 ~ 106kPa; d) Use: applicable methane and coal dust explosive mixture, but no damage to insulation corrosive gas. 5.2 operating voltage type of passive type II, III type of communication line management system needs to provide power access, where the power of the working voltage: AC220V, 50Hz, or DC12V 1A operating voltage. Voltage fluctuation range: AC: 90V ~ 250V; DC 10.5 ~ 14V. 5.3 Other technical parameters nominal operating voltage Un 48V maximum continuous operating voltage Uc 60V maximum continuous operating current IL 400mA Nominal (8 / 20μS) Imax 10kA Voltage protection level In 5kA maximum discharge current discharge current (8 / 20μS) (In) Up ≤280V response time tA ≤1ns transmission rate Vs 2Mbps insertion loss aE ≤0.5dB temperature range of -40 ℃ ~ + 80 ℃ Protection class IP54