How to maintain and maintain the communication and power room?
1, multimeter. As one of the necessary testing tools in the daily maintenance, the multimeter is mainly used for testing voltage, current, frequency and other related parameters, requiring the resolution of at least 41/2 bits (10000 words). At present, the maintenance personnel is usually used by the American FLUKE company F80, F180 series of high precision digital multimeter, the multimeter resolution can reach 44/5 (50000 words), can fully meet the "Regulations" on the accuracy of the measurement requirements. At the same time, this kind of multimeter with anti dropping, anti burning, antimagnetic, anti sputtering, intelligent alarm and good maintenance, very suitable for field use.
The quality standard of power supply should be uninterrupted to the communication equipment. First of all, the quality of power supply should be guaranteed to meet the standard. In the regulation of telecommunication power supply maintenance China Telecom "(hereinafter referred to as the" Regulations "), the DC power supply voltage, DC power supply circuit connector (outside the joint pressure drop distribution screen, DC) the parameters of voltage, power supply standard AC mains power and AC power supply in the oil machine noise voltage, frequency and power factor so do the detailed requirements. At the same time, the regulations also specify the parameters such as three-phase supply voltage unbalance, voltage waveform, sine distortion rate and so on. From the above standard requirements, we can see that in the test of daily power supply quality
AC / DC clamp type meter. AC / DC clamp meter as the daily maintenance work is one of the essential test tool, mainly used to test the voltage, current, frequency and other related parameters, it has high resolution and precision testing and more testing function. At present, the maintenance personnel usually use the FLUKE of the United States F337 AC / DC Clamp Meter (RMS), and Silicon Valley communication production of SGT-11A and SGT-12B single and double jaw clamp type table, this kind of instrument with large diameter and small jaw electrical test resolution and high precision, accurate measurement, current flow the characteristics of. At the same time, the manual design of this kind of pliers is very suitable for the occasions with small space. Noise meter. The noise meter is mainly used to test the pulse component of rectifier equipment and DC converter output voltage, that is, noise voltage. At present, the noise meter in the market is mainly analog and digital. The analog noise meter is mainly JH5151 of state owned Jianhua instrument factory. Although it is larger and heavier, it has many testing indexes and high accuracy. Digital noise meter mainly has FZY-120 and FZY-120A, it has light and easy, portable, simple test, visual display and so on. At present, maintenance personnel can choose to use according to their favorite.
