Quality first, customers first. Ji 宁浩博 mining equipment specializing in the production and sales of mining equipment protection switching products, adequate supply, complete model, low price, timely delivery, quality Three Guarantees, welcome to contact to discuss the industry, integrity is priceless, win-win cooperation . PIR-300FJ (double for the Tornado aircraft) protection device (hereinafter referred to as protective devices), is applicable to contain explosive gas (methane) and coal dust coal mine intelligent multi-functional integrated protection, with 380V, 660V, 1140V voltage grade, rated current up to 300A of the various types of twin pairs Tornado aircraft supporting the use of the starter switch, enabling the power supply system and on the machine before the cyclone fan various protection functions. Protector uses an advanced microprocessor and high capacity new chip, with a high precision data processing and advanced protection algorithms, protection of high precision, fast response. Complete leakage blocking, undervoltage, overvoltage, phase imbalance, overload, short circuit, phase, wind alarm and sound logic control functions. The use of advanced processors, fast response protection. Prompt information-rich, easy to set up. Achieve "four remote" (remote control - open and close switches, remote adjustment - adjustment switch operating parameters, telemetry - remote measurement signal, remote - check points off state) function. ? Is the area's latest products, technology leadership, reliable, and powerful. PIR-300FJ dual power single fan switch intelligent integrated protection devices for mine intelligent integrated protection device dual power single dedicated fan switch covers 380V, 660V, 1140V voltage level, 3 ~ 200A rated current, all-digital tuning and calibration. With undervoltage | overvoltage | overload | short circuit | Equilibrium | leakage lockout protection; with four remote RS485 communication function; with calendar clock; with fault memory and inquiries; with test functions via the menu. Achieve a variety of operating modes. Functional, well-targeted, long-term stable and reliable operation. By EMC testing and proof testing center. Note: You can use the PIR-300FJ supporting the measurement circuit composed of three technical parameters 1, Rated current: 3 ~ 200A; 2, rated voltage:? 18VAC 3, Rated frequency: 50Hz 4, measuring content: U, I, R 5, measuring Accuracy: ± 5% 6, the switch input methods: optical isolation environment an altitude of no more than 2000m, the air pressure is 80kPa ~ 110kPa 2, the ambient temperature is -5 ℃ ~ + 55 ℃ 3, ambient air relative humidity less than 95 % (+ 25 ℃ when) 4, no obvious damage to the insulation of 5 atmospheres, to prevent dripping local standard Host a monitor a data cable connector 1 set of this product is introduced here, if Do you have any questions or want to purchase our products, please contact me Tel: 15589715136 Tel: 0537-2782188 QQ: 877995102 Company Website: http: //www.wgangdai.com welcome you to inquire, and we look forward to working with you business to create a more beautiful tomorrow.