| 摘要 |
<p>The present invention relates to a system and a method for measuring the alternating current equivalent series resistance of a conductor, in particular when transporting a large current, i.e. of the order of a few thousand Amperes (around 3000 A); the system comprises: a current sensor connected to the said conductor able to deliver a measurement current having a real component only, and having a predetermined relationship with the said alternating current; a current/voltage converter connected to the said current sensor having a predefined conversion ratio with the said measurement current, for converting the said measurement current into a corresponding voltage; a voltage divider connected to the said converter capable of delivering an adjustable division of the said corresponding voltage; a voltage sensor applied over a predetermined length of the said conductor able to deliver a measured voltage having at least a real component; a null indicator receiving the said measured voltage and the said adjustable division, able to indicate the balancing between the real components of the said measured voltage and of the said adjustable division; a voltage meter able to deliver the value of the said adjustable divison and of the said corresponding voltage.</p> |
