PROBLEM TO BE SOLVED: To provide a method (10) for detecting series arc in an AC electric system. SOLUTION: The method is a pattern-recognition based approach and includes: passing raw current signals (y1) from a conductor in the electrical system through one or more filters (22) to ...
There have been recent advances in equipment de- sign and arc flash hazard assessment. It is possible to design a complete site electrical system, from transmission to distribution to utilization voltage, with the estimated arc flash energy below 20 cal/cm² (80 J/cm²) for all equipment....
METHOD AND DEVICE FOR DETECTING AN ELECTRIC ARC IN AN ELECTRICAL SYSTEM The invention relates to a detection electrical system"( (a) Obtain a signal (...) from 'at least one sensor' (102), which detects the sound wave (...) (...); (b) The first representation space is defined by...
17. With the development of computer technology and communication and technology in Information times and the board application of Internet, the internet embedded computer system arc becoming more and more widly used. 在以计算机技术、通讯技术相结合的信息时代的快速发展和互联网的广泛应用的形势下,网络嵌...
Identify and analyze high risk arc flash areas in your electrical system Switching Management Switching Sequence Management and Switching Device Interlock Enforcer Underground Conductor Electromagnetic Fields Determine if the magnetic fields generated by underground conductors exceed health & safety exposure limit...
The arc is detected using an optical sensor & the signal input to a protection device which also monitors the load current on the system. Conventional current based protection techniques are at times challenged by the nature of arcing faults, and can result in slow protection clearance tim...
The former non-explosion assessing method research on kindling characteristic testing system of electrical arc discharge in intrinsic safety circuit mostly aims at the design of intrinsic safety circuit,which circuit parameter of different circuits is adjusted in order to make the circuit reach the state...
FIELD: electrical engineering. SUBSTANCE: arc-control contact system of high-voltage load switch has mobile arcing contact in the form of enveloping plate, immobile arcing contact including current conduit in the form of U-shaped clamp with embracing ends provided with arc-resistant elements in the...
Protection against arc flash in the U.S. market According to the National Electrical Code (NEC), there must be an arc flash hazard warning on the electrical equipment of machine, switch, and control cabinets. In order to adequately protect personnel from the dangers of an arc flash when work...
MINIMIZE ELECTRICAL HAZARD RISK AND ENSURE WORKERS SAFETY Single building, campus-wide, nationwide or international, Hallam-ICS can provide arc flash studies, offer mitigation solutions and NFPA 70E training for your facility. We can help you with better electrical system performance as a result ...