Wuhan Wei Austrian three high Electrical Equipment Co., Ltd. - WAGYC-2008 (2008B) static contact isolation switch contact finger pressure meter isolation switch is the most widely use the largest range of applications in the power system high voltage switchgear. Outdoor isolation switch is the only fully exposed to the atmospheric environment work most directly affected by environmental and climatic conditions and the most serious electrical equipment, its operating conditions is relatively poor, prone to mechanical or electrical failure. Finger contact especially susceptible to the invasion of rain, dust and harmful gases produce poor contact and causes fever, finger pressure spring due to fever annealing to reduce the pressure, which is more cause finger fever and a vicious circle eventually burn out finger resulting in an accident. Often only overhaul Note that the replacement of significant failures and the breaking spring, but is unable to determine the decrease in the pressure spring and replacement, so running again, each of the current distribution due to different pressures and different fingers, the greater the difference current more uneven distribution, poor contact and overheating occurs after long-term operation. Finger fever vicious cycle, a finger contact, it might spread throughout the contacts being exposed. At the same time there is a lot of isolation switch finger pressure adjustable maintenance adjustment is not enough pressure on each finger adjustment pressure difference will appear the same to the above phenomenon. The criterion is measured loop resistance most of the maintenance personnel to determine the conductive part of the contact is good or bad, that the loop resistance in qualified within the conductive part of the repair work can be a successful conclusion. In fact, the loop resistance values ??are given in the product manual is the entire value of the conductive loop, including terminals, conductive tube, finger contacts and other parts of the body resistance and contact resistance greater range margin larger not directly reflect the change of the contact resistance, and only shows a conductive loop path. The tests showed that: two pairs of finger contact with four pairs of finger contact loop resistance values ??were in the acceptable range. Touch the same pressure on the big and small loop resistance value is essentially unchanged. Various maintenance lead (procedures), the standard measurement touch refers to the provisions of the contact pressure, the recommended measuring tools for spring balance, pressure at high altitude, measured with a spring balance pressure not only inconvenient in practical work, measuring touch inaccurate nor safe, some structural isolation switch finger pressure simply can not be measured with a spring balance (such as scissors type). Therefore, it is required to measure the contact finger contact pressure only on paper. Overhaul of the current supply system, I developed an apparatus for measuring isolating switch of finger pressure intelligent type of finger pressure detector, it contacts the sensor contact position between each pair of contact means open as long as the analog You can touch the contact pressure and memory. Effective solution to a major problem for the measurement of the contact finger pressure. The instrument has been patented. The instrument can also be used for the inspection of the of disconnectors manufacturer contact finger pressure. Changing the shape of the pressure sensor can also measure the circuit breaker of finger pressure. The main technical parameters: Supply voltage: AC 220 V Power Dissipation Power: ≤ 20 W Measuring range: ≤ 1500 N (cattle) measurement error