贵州干式变压器：电压互感器安装和运行时应注意的事项

电压互感器安装和运行时应注意的事项 　　
电容式电压互感器(简称CVT)。

1)电压互感器的外壳(铁壳)和二次侧必须同时接地，以降低高压串入低压造成的危险性。
2)电压互感器的一、二次绕组都应装熔断器，以防止二次侧工作时接地和短路。
3)电压互感器二次回路连接导线应用绝缘软铜线，截面积不小于I. 5mm²，不得使用铝导线。
4)电压互感器二次回路的电压降应不超过0.5%，对0.5级电能表，不得超过0.25%。

Voltage transformer installed and running should pay attention to

Capacitor voltage transformer (referred to as CVT).

1) voltage transformer casing (steel case) and the secondary side must also be grounded, in order to reduce the risk of low pressure caused by high voltage in series.
2) a voltage transformer secondary winding should be installed fuse to prevent grounding and short-circuit the secondary side.
3) the voltage transformer secondary circuit to connect the insulated flexible copper wir手 机：13287501888e applications, cross-sectional area not less than I. The 5mm ² may not use aluminum wire.
4) voltage transformer secondary circuit, the voltage drop should not exceed 0.5%, 0.5 watt-hour meter shall not exceed 0.25%.

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