National New Year folks Hello everyone, I 宁浩博 mining company Ji Machinery Co., Ltd. with its strong technology, excellent product quality, satisfactory service, in the market enjoy a high reputation. Intelligent integrated protection with excellent quality, trusted by the user. First-class products, good service is our consistent aim! The company is willing to friends and the community work together for common development! The staff warmly welcome the global community of companies and individuals to negotiate business for a better future! You have any questions about the company and products need advice, you can call the telephone company and we look forward to your sincere cooperation. Let me take you to understand this product: PIR-DY (low voltage protection box) protection device (hereinafter referred to as protective devices), is applicable to contain explosive gas (methane) and coal dust coal mine intelligent multi-function integrated protection devices, with 660V, 1140V, 3300V voltage, rated current up to 1000A of the various types of mobile substation low side switch supporting the use of two separate circuits to protect, to achieve a variety of power system protection functions. Using high-end CPU processing speed, precise movements. Chinese blue design with large LCD screen, display information-rich, easy operation. Equipped with RS-485 communication interface; achieve "four remote" (remote control - open and close switches, remote adjustment - adjustment switch operating parameters, telemetry - remote measurement signal, remote - check points off) function. Can be two independent current protection circuits, respectively. Easy setup. The protection function parameters can be selected via the menu adjustment, wide application, protection and high accuracy. Has the hardware and software self-test function, such as problems, the system gives the appropriate error message. Detection / protection and high precision, the latest generation of products, technology leadership. ??????? PIR-DY shift change with low voltage protection box intelligent mobile substation integrated protection devices for low-voltage protection tank mine, covering 380V, 660V, 1140V, 3.3kV voltage level, 50 ~ 1000A rated current, full Digital tuning and calibration. With undervoltage | overvoltage | overload | short circuit | Equilibrium | leakage lockout | leakage protection | protection insulation surveillance; with four remote RS485 communication function; with calendar clock; with fault memory and query capabilities; experiment with the menu function. Functional, well-targeted, long-term stable and reliable operation. Certified by EMC testing and proof testing center. Measurement parameters 1 ,? Rated current: 50 ~ 1000A 2 ,? Rated voltage: 10VAC 3 ,? Rated frequency: 50Hz 4 ,? content measurement: U, I, R 5 ,? Accuracy: ± 5% 6 ,? switch Input methods: (when + 25 ℃) opto-isolated 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% 4 In no obvious damage to the insulation of 5 atmospheres, local standards to prevent dripping configure host a current transformer 6 power one above is the introduction of this product, if you have any questions please contact us, can also be company site visits.