Series Intelligent line fault indicator in THFI device the instructions line fault current path. Using a line fault indicator, which can quickly determine the time of short circuit and ground fault section, completely changed the past blind hunt, segmented closing to find fault section backward, thus saving troubleshooting more than 80% of the time, making the line patrol officers to find The failed labor intensity is reduced by more than 90%, greatly improving the reliability of power supply. The products are widely used in oil fields, the city's overhead and cable lines, or switch cabinet, box transformers and other equipment supporting, can be quickly and accurately determine the fault line and the point of failure. The product uses a micro-power, high-performance microcontrollers as a signal processing unit, the use of modern digital signal processing techniques to identify the fault information, compared with the market analog circuit fault indicator has strong scalability, consistency, stable performance, high precision, anti-interference ability, etc.. Ultrasound, wireless communication technology, can also constitute the remote automatic fault monitoring system. Product Features automatic identification of short-circuit fault adaptive function can be set automatically according to the current load current overcurrent settings, you do not need to set the action value. Can detect short-circuit fault indicator and install the line the asymmetric current source (or substation) the the ground fault THFI-II compatible, can be very accurate to ground fault is detected (specific principles, see below). The THFI-II short circuit fault indicator does not require asymmetric current source, which uses ground fault occurs when the current pulse and voltage phase relationship between the detection of single-phase ground fault insulation breakdown caused by ground fault detection accuracy high. Adaptive algorithm, no direction requirements, to avoid ring network power supply caused refuse to move and operator error, is a national initiative. 14 A / D converter fault waveform is sampled using wavelet transform to extract ground pulse information, making the single-phase ground fault detection device with high sensitivity and reliability. Good reset time set at the factory to automatically reset automatically reset after time to time. The fault can be acknowledged in order to avoid wrong direction, within 7 seconds after the occurrence of the fault pulse voltage drops, so you can ensure that the superior switch trip. Inrush current the brake algorithm unique inrush detection algorithm can avoid line surge or flaring down power transmission indicator malfunction. Insulated operating rod can be charged handling and installation, removal tool can be charged handling, to avoid loss of power outages caused by equipment installation. All-day instructions flop and light indication combination of both to meet during the day observation, but also meet the rainy day and night observation.