Displaying and Printing Events

Displaying Events 4

Transient Events The recorder can detect both positive and negative transients down to one 1 µs in duration on either the H-N and N-G circuits. If the voltage exceeds the transient deviation threshold for any given half cycle, a transient event will be recorded. A transient event can include one or more transients occurring within the same half cycle. The event column will display the number of transients that the recorder was able to count.

An example of a transient event can be seen in the Event tab shown. Event #8 shows a single transient on the N-G circuit. The polarity for this transient was positive, the voltage was 414 volts. The transient was detected at a phase angle of 330 degrees.

Multiple transients can sometimes occur within a ½ cycle. For example, a large single transient followed by several cycles of high frequency ringing.

Since there are an infinite variety of wave shapes that can be classified as multiple transients, it is impossible to determine the accuracy of the reported information under these conditions.

Event #18 shows an example of a multiple transient event. This event indicates 9 transients that were detected starting at a phase angle of 271 degrees. The detected polarity was negative and the voltages of the transients were measured as 469 volts.

An important point to note about a multiple transient event such as #18 above, is that the voltage reading in the Extreme column will be the maximum voltage (positive or negative) of any transients that occur more than 100 µs apart. The degree (in the fourth column) will be the position in the cycle of the first transient. The angle of neutral-ground transients is referenced to the start of the hot-neutral sine wave.

If a transient is less than 1 µs in length, the recorder will indicate the magnitude of the transient but will be unable to determine the polarity. In this case, the recorder will show the sign of the transient as “+”.

Sag and Swell Events Sag and swell events are decreases and increases in line voltage that exceed the thresholds for at least ½ cycle. Swells can occur on the

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Fluke VR101S manual Displaying and Printing Events
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VR101S specifications

The Fluke VR101S is a revolutionary tool designed for professionals in the electrical and maintenance fields, offering innovative features and technology that enhance safety and efficiency. This compact and versatile device is engineered to simplify the process of voltage verification and insulation testing, making it an indispensable addition to any toolkit.

One of the standout features of the Fluke VR101S is its ability to perform a comprehensive range of tests with a single device. It allows users to check AC and DC voltages, perform insulation resistance tests, and verify the integrity of electrical systems. This versatility eliminates the need for multiple tools, streamlining workflows and minimizing the risk of errors.

The device utilizes advanced technology to ensure accurate and reliable measurements. With a wide voltage range capable of detecting voltage levels from 0 to 600V, the VR101S can cater to various applications, whether it be in residential, commercial, or industrial settings. The automatic voltage detection feature is particularly noteworthy; it automatically identifies the presence of voltage and indicators that provide visual alerts, enhancing user safety.

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In conclusion, the Fluke VR101S is a powerful and efficient voltage and insulation testing tool that brings together an array of features, robust technology, and dependable performance. Its versatility, user-friendly design, and emphasis on safety make it an essential instrument for electricians and maintenance professionals seeking to enhance their operational capabilities. Whether tackling routine maintenance or critical troubleshooting tasks, the Fluke VR101S stands out as a reliable partner for any electrical work.
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