Excount-Ii Measuring Principle - ABB Excount II User Manual

1. Introduction

1.2 EXCOUNT-II measuring principle

Figure 1.2.1
The principle of measuring with EXCOUNT-II
The sensor is mounted on the surge arrester in series with the earth
conductor. It is important that the surge arrester is insulated from the
ground with an insulating base. The sensor registers the number
of discharges, categorizes and records the amplitudes of the surges
together with their date and time and measures the leakage current.
As an option, resistive leakage current can also be measured.
The measuring data is transfered to the hand held transceiver by
radio communication. An optional external hand-held antenna is
available for the transceiver in special applications requiring a stronger
radio signal (transmission line application, for example)
The information from the hand-held transceiver is transferred to a PC
via data cable.
Statistical analysis can be undertaken in the PC via the EXCOUNT-II
software.
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1HSA 801 080-15en EXCOUNT-II Users Manual