Compliance C4X18000PF-SJM-C – MegaPulse Impulse Tester, 220V 90A

• TestMinder (Computer Control 32bit)
• Manual R3 (Rotary Switch)
• 1 pulse every 10 seconds

Impulse Testing with the MegaPulse PF series tester

The impulse test is designed to simulate impulse surges which occur in everyday life due to nearby lightning strikes, switching transients, and other high-frequency faults on the power distribution network. Impulse testing is the fundamental method for empirical verification of the adequacy of insulation. Other methods of ensuring adequate insulation (AC or DC Dielectric Withstand testing, measurement of over-surface creep age, through-air clearance, or distance through-insulation) are all extrapolated from the results of impulse testing. The impulse test is performed to ensure that the insulation in question will be able to function properly when subjected to similar impulse surges in the field.

Safety Precautions

The impulse withstand test can generate voltages in excess of 2200V peak at potentially lethal current levels. Currents of as little as 5mA at 120 volts can cause death; the MegaPulse can deliver currents of more than 90 Amps peak for very short time duration. The potential for serious injury or death exists and personnel should be aware when they conduct this test.

The MegaPulse impulse tester generates the impulse waveform only; it does not determine Passing or Failing results. It is the operator’s responsibility to monitor the output waveform and determine Passing or Failing results. In monitoring the impulse waveform, consider the following points: The Impulse waveform is high voltage and high frequency (short duration). Always ensure that the measuring instrument (usually an oscilloscope with a high-voltage probe) is rated for the voltage involved, and that the frequency response of the instrument and probe are capable of measuring the output waveform of the MegaPulse Impulse Tester. A measuring instrument or probe with a low frequency response will result in erroneous readings that could be mis-read.

(1) Voltage adjust knob

(2) Polarity switch

(3) NOR REV indicator

(4) Charge switch

(5) Charge indicator

(6) Trigger switch

(7)Trigger indicator

(8) Voltage meter

(9) Output jack

(10) Return jack

(11) Voltage BNC output

(12) Current BNC output