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本文介绍HAX—100程控交换机采用隔离变压器作电源,因地制宜地将接零保护、接地保护和线电压供电三者有机地结合在一起,便可解决交换机的接地与供电电源问题,从而有效地保护了设备和工作人员的安全,提高了通信系统的通信质量。 1.交换机对接地的要求 交换机对接地有特殊的要求,因为交换机除外壳接地外,还有逻辑接地(GND):(1)对地电压瞬时最大值(峰值)要小于5V,即仪器地线与电源中线
This article describes the HAX-100 program-controlled switches using isolated transformer for power supply, according to local conditions then zero protection, ground protection and line voltage power supply three organic combination, you can solve the switch grounding and power supply problems, thus effectively protecting Equipment and staff safety, improve the communication quality of the communication system. 1. Switch to ground requirements Switch to ground have special requirements, because the switch in addition to the shell ground, there is a logical ground (GND): (1) to the instantaneous maximum voltage (peak) to less than 5V, that is, the instrument ground With the power center line