Drive repair entry - When Protecting the basic performance characteristics with varistor (1), when the impact of the strong impact of the source (or the impact of current Isp = Usp / Zs) does not exceed the specified value is not allowed to limit the voltage varistor than the protected object can withstand impact resistance voltage (Urp). (2) impact resistance, namely the varistor itself should be able to withstand the impact of current, the impact energy, and several attacks have occurred while the average power. (3) There are two characteristics of life, one continuous working voltage life 6FX1808-1BX02, namely varistors at ambient temperature, and system voltages specified conditions should be able to work reliably specified time (hours). Second, the impact of life 6FX1806-0BX01, that is able to reliably withstand the impact of the number of times specified. (4) after the intervention varistor system, in addition to act as a "safety valve" for the protective effect 6FX1126-2BA00, will bring some additional impact, which is called "secondary effects", which should reduce the normal operation of the system performance. Then the main factors to consider, there are three, one varistor itself capacitance (tens to tens of thousands PF), the second is in the system voltage, leakage current, three are non-linear current source impedance through the varistor coupling effects on other circuits. Schneider 140PLC maintenance; PLC maintenance; Mitsubishi plc maintenance; converter repair Schneider; Schneider TSXPLC maintenance; West Germany inverter repair; Omron plc repair; Kymmene drive repair; Siemens s5PLC maintenance; Hitachi plc repair; Raynor soft-start maintenance ; Yaskawa maintenance; Yaskawa G7 drive repair; Siemens 200cn PLC maintenance; Siemens governor repair; Yaskawa G5 drive repair; Siemens 6RA27 DC converter maintenance; Siemens DC converter repair; Siemens PLC maintenance; Siemens 6RA28 DC converter repair; Siemens 6ra70 DC drives repair; board maintenance; 6FX1808-1BX01_C71458-A6132-A11 on China by Shenyang Electric Limited. Shenyang on China Electric Co. (www.zsmsy.com) Liaoning Shenyang, the other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shenyang people in leadership with the staff warmly welcome all inquiries negotiations to create Shenyang on a better future for the people.