2499911

Achieve Accurate Measurement Of Surge Pulses For Equipment Calibration

The accurate measurement of Surge pulses for equipment calibration purposes requires that a Surge generator output be measured in both Differential and Common modes.

Common mode measurements are relatively straightforward, as the measurement is of a single output referenced to earth potential. Differential measurements however, require that both the high and common of a Surge generator output are measured. This requires use of two high-voltage probes and a dual-channel oscilloscope capable of arithmetic functions.

High voltage probes are notoriously sensitive to measurement position (vertical, horizontal), proximity of metal sheets, etc. In addition, annual calibration of high-voltage probes is not sufficient to ensure an accurate impulse measurement can be made. So before each measurement, the probe(s) must be adjusted to the test equipment and measurement position.

This is time-consuming and requires additional test equipment or know-how not always readily available. To reduce the difficulties of Differential measurements from Surge generators, Haefely have developed an active probe specially for impulse measurements on floating outputs.

Key Features

• Divider Ratio 1000:1
• Impulse measurement up to 8 kV
• Impulse duration measurement up to 20 ms
• Impulse rise time measurement from 400 ns
• Single BNC output matches all oscilloscopes
• Separate power supply
• AC/DC measurement
• Can be used with any standard oscilloscope
• Simple and easy to install
• Reduces calibration time
• Reduces calibration errors
• Defined CMRR (Common Mode Rejection Ratio)

For more information about this product, or for expert EMC advice and guidance, start a technical conversation with a member of our team on 0330 313 3220.