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-400S dual-speed protection device (hereinafter referred to as protective devices), is applicable to contain explosive gas (methane) and coal mine dust in intelligent multi-function integrated protection device, and with 380V, 660V, 1140V, 3300V voltage level, rated current up to 500A of various types of two-speed starter (switch) supporting the use (and, as long as the connection between the two protection through a simple 8 communication lines can constitute a two-speed dual-circuit system), in order to achieve power various protection functions of the system. Protector uses an advanced microprocessor, high-precision data processing and advanced protection algorithms, protection of high precision, fast response. Complete leakage blocking, undervoltage, overvoltage, phase imbalance, several protection features overload and short circuit; and with other devices online, automatically switches the two-speed and two-speed dual-loop control functions such as logic. Bao Chinese LCD. There are calendar display. With menu-driven man-machine interface, easy operation. Real-time display of the current system of three-phase current and voltage, and the system time is running, information-rich display. Strong expansion. Practical good. Equipped with RS-485 communication interface. Can be composed of a two-speed dual-loop, multi-mode, which can meet the needs of different working conditions. The protection function parameters can be selected via the menu adjustment, wide application, protection and high accuracy. All protection function can be cut. Has a "memory" function. Each adjustment of the protection function parameters are stored memory, and can enrich the memory fault information, fault type. Has the hardware and software self-test function, if the problem, the interface gives the corresponding error message. Can easily be determined by the value adjustment buttons on the door, the protection test, information query. ??????? PIR-400S dual-speed switch intelligent integrated protection device for intelligent integrated protection device for the first generation of our mine two-speed magnetic starter, covering 380V, 660V, 1140V voltage rating, 5 ~ 500A 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. Allow a single two-speed or two-speed dual speed up the double-speed dual-loop. Functional, well-targeted, long-term stable and reliable operation. By EMC testing and proof testing center. ? Measurement of technical parameters 1, Rated current: 5 ~ 500A 2, Rated voltage: 4VAC 3, Rated frequency: 50Hz 4, measuring content: U, I, R 5, Accuracy: ± 3% 6, the switch input methods: optical an isolated environment, altitude not exceeding 2000m, pressure is 80kPa ~ 110kPa 2, the ambient temperature is -5 ℃ ~ + 55 ℃ 3, ambient air relative humidity less than 95% (+ 25 ℃ when) 4, no significant damage 5 gas insulated environment, local standards to prevent dripping configure host a current transformer 3 Power 1 this product is introduced here, if you have any questions or want to purchase our products, please contact me Phone: 15589715136 Tel: 0537-2782188 QQ: 877995102 Company Website: http: //www.wgangdai.com welcome you to inquire, we look forward to business cooperation with you to create a more beautiful tomorrow.