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Compliance West MegaPulse Instruction Manual

Impulse tester 1.2x50-16pf pv
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MegaPulse
IMPULSE TESTER
1.2x50-16PF PV
Instruction Manual

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Summary of Contents for Compliance West MegaPulse

  • Page 1 MegaPulse IMPULSE TESTER 1.2x50-16PF PV Instruction Manual...
  • Page 2 To fully appreciate all the features of your new instrument, we suggest that you take a few moments to review this manual. Compliance West USA stands by your instrument with a full one- year warranty. If the need arises, please don't hesitate to call on Thank you for your trust and confidence.

  • Page 4: Table Of Contents

    Table of Contents An Introduction to Impulse Testing with the MegaPulse series tester ........6 Safety Precautions ......................6 Test Personnel ....................6 Testing Area ...................... 6 Safety Techniques ..................... 7 Using the MegaPulse Impulse Tester ................7 Introduction ..........................9 Operation .............................

  • Page 6: An Introduction To Impulse Testing With The Megapulse Series Tester

    The impulse withstand test can generate voltages in excess of 16 KV peak at potentially lethal current levels. Currents of as little as 5 mA at 120 volts can cause death; the MegaPulse can deliver currents of more than 3500 Amps peak for a very short time duration. The potential for serious injury or death exists and personnel should be aware when they conduct this test.

  • Page 7: Safety Techniques

    Safety Techniques The high voltage circuit of the MegaPulse can be shut off at any time by turning OFF the rear power switch. Note that there are residual voltages inside the equipment that may take up to 5 minutes to bleed off to safe levels.
  • Page 8 A passing result will generally allow the MegaPulse to generate the full 1.2 x 50uS waveform as shown in figure 1. A failing result will typically show an abrupt reduction in the output voltage, either before the expected peak, or soon after (Figure 2).

  • Page 9: Introduction

    Before the test can commence, the unit must be armed by pressing the CHARGE Button.  The test will not begin until the TRIGGER Button is pushed. Voltage is discharged by a resistor bank within the MegaPulse tester upon test completion.  Discharge progress is shown on the front panel meter.
  • Page 10 Options: TMM: Testminder USB computer interface software. The tester can be controlled with a computer. It can also be set to automatically follow test sequences varying test voltage and time between tests and keep a record with test information. Compatible with Windows 32bit platform. 220, 230 or 240: If a different line voltage is desired, with this option we install a step down transformer to be compatible with your line voltage.

  • Page 11: Operation

    The cord packaged with your MegaPulse Tester is for use in the United States. If another power cord must be used, the cord must be rated for the maximum current noted on the rear panel.

  • Page 12: Fuse Replacement

    Before using your tester, take a few minutes to become familiar with the use of its controls, indicators and connectors. The front panel features of the MegaPulse are shown in Figure 3 and described in Table 1. The rear panel features of the MegaPulse are shown in Figure 4 and described in Table 2.
  • Page 13 Figure 3. Controls, Indicators, Connectors – MegaPulse 1.2x50-16PF PV Front Panel...
  • Page 14 This cable includes both the OUTPUT (red) and RETURN (black) test leads. The provided large alligator clips may optionally be connected to the ends of the test leads. These test leads should not be touched when a hazardous voltage is indicated on the VOLTAGE meter. Table 1. Controls, Indicators, Connectors – MegaPulse 1.2x50-16PF PV Front Panel...
  • Page 15 FUNCTION Appliance Inlet / Fuse holder Use the supplied cordset to connect the MegaPulse tester to appropriate source of supply. Fuse / Power Switch holder provides access for Fuse replacement, and the Power Switch is used to turn the tester ON and OFF.
  • Page 16 Figure 5 shows a test setup to measure common-mode noise. The high-voltage oscilloscope probe, and the probe ground are both connected to one side of the MegaPulse output. In theory, the result should be that 0 volts is measured on the oscilloscope. In practice, because of the high-impedance of the high-voltage oscilloscope probe, the oscilloscope will measure a substantial high-frequency transient as shown in Figure 6.
  • Page 17 Figure 5: Common-mode noise measurement setup Figure 6: Common-mode noise Figure 7: Common-mode noise superimposed on the output waveform...
  • Page 18 Note that the peak amplitude of the measured output waveform is proportional to the voltage that is read on the front panel of the MegaPulse. 10. Repeat steps 4 through 9, except this time toggle the POLARITY switch so that the REV indicator is lit.

  • Page 19: Testing

    Testing This section describes how the MegaPulse 1.2x50-16PF PV tester is used to conduct a test. The test can be stopped immediately at any time by turning OFF the rear-panel power switch. Connect the tester to a proper source of supply using the included 18 AWG power supply cord.

  • Page 20: Maintenance And Calibration

    Maintenance and Calibration Service Information The MegaPulse 1.2x50-16PF PV tester is warranted to the original purchaser for a period of 1 year. This warranty does not cover problems due to misuse or neglect. Malfunctions which occur within the limits of the warranty will be corrected at no charge. Mail the instrument post paid to the manufacturer.

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