一、中频电源系统维护 A, medium frequency power supply system maintenance 　　系统维护分为三大部分：水路系统，液压系统和电气系统，重点是电气系统的维护。 System maintenance is divided into three parts: water system, hydraulic system and electrical system, the focus is on electrical system maintenance. 　　实践证明：中频电源系统绝大多数故障的发生与水路有直接关系。因此，水路要求水质、水压、水温、流量务必达到设备规定要求。 The practice proved: the vast majority of intermediate frequency power supply system fault and waterways has a direct relationship. Water demand, therefore, water quality, water pressure, water temperature and flow rate is important to achieve equipment required. 　　电气系统的维护: 电气系统必须定期检修，由于主回路连接部分容易发热，从而引起打火，出现许多莫名故障。 Electrical system maintenance: electrical systems must be preventive maintenance, as the primary loop connection parts easy to fever, leading to a lighter, many strange problems. 二、中频电源系统常见故障的检测方法（只介绍电气系统） 2, intermediate frequency power supply system common fault detection method (electrical system is introduced in this paper only) 　　㈠.检测常用仪器仪表: Seller. The test commonly used instruments: 　　数字式万用表,绝缘摇表,电感电容表,示波器(专业人员用)。 Digital multimeter, insulation shake table, inductance capacitance meter, oscilloscope (professionals). 　　㈡.系统主回路方框原理图: In lien. The main loop of the system principle diagram of the box: 　　断路器 三相全波整流和滤波 逆变和中频负载三相交流输入 The circuit breaker Three-phase full wave rectifier and filter and intermediate frequency inverter load three-phase ac input 　　㈢.系统检测: An. System testing: 　　系统检测分四部分. System testing in four parts. 　　1.控制系统的检测(断路器及其控制部分) 1. The control system of detecting part (circuit breaker and its control) 这部分检测比较简单.一般电工根据断路器说明书和系统主回路图中的控制原理图即可检测. This part of the test is simple. General electric circuit breaker based on manual control principle diagram of main circuit diagram and system testing. 　　检测结果应为断路器操作正常,门板按钮和指示灯正常. Test results shall be the circuit breaker operation is normal, door plank button and the light is normal. 　　2.整流部分的检测 2. The rectifier part of the test 　　首先,系统必须通水. First, the system must be water. 　　将主回路从滤波电抗器前级断开,在三相全波整流输出两端接一个≤500Ω,≥500W的电阻性负载(常用3个或4个300W灯泡串联)。开机后，直流电压表应能指示在大约1.35×Ul位置（Ul：交流输入线电压）。 Grade disconnected before the primary loop from filter reactor, on both ends of three-phase full wave rectifier output by one Ω 500 or less, of 500 w or resistive load (usually 3 or 4 300 w bulb series). After startup, dc voltmeter should be able to indicate position in about 1.35 x Ul (Ul: ac input line voltage). 　　3．逆变和中频负载检测 (3) and intermediate frequency inverter load testing 　　控制系统和整流部分正常后，接入逆变和中频负载，若不能正常开机启动，先检查主电路板接线,对掉114，115后重新启动，若无法启动须更换主电路板，若还不能正常开机，应为逆变和中频负载有问题。其检测须逐个元件检测。 Control system and rectifying section after normal, access and intermediate frequency inverter load, if not normal startup, check the main circuit board wiring, to restart after 114115, if you can't start you must replace the main circuit board, if does not boot properly, should have a problem with intermediate frequency load inverter. The test shall be individually component testing.