Vacuum Interrupters Inc. is pleased to introduce the VITS60M & VITS75M vacuum interrupter integrity testers (aka vacuum bottle integrity tester). First and foremost, these test sets are an extremely user-friendly, very portable, light-weight 60kV or 75kV dc test set that includes everything required to test the integrity of vacuum interrupters in the field or shop. They incorporate a variable high-voltage power supply, back-lit LCD display, comprehensive safety features; and is furnished with a complete set of test cables.
Actually, these are 3-in-1 test sets as they additionally have superior performance as a 2.5/5/10kV megohmmeter; and can also function as a stand-alone 60kV or 75kV dc hipot. As a megohmmeter they not only measures insulation resistance, they also provide automated test routines for polarity index and absorption rate tests.
The main objective of the unique design and simple operation of these test sets is to permit the test technician to use a single test set to easily test vacuum interrupters as well as insulating elements in the field during maintenance testing. Armed with this information, users can determine if a vacuum circuit breaker, contactor or other electrical equipment should remain in service or must be repaired or replaced.
Utilizing the traditional NETA/ANSI/IEEE high voltage dc test for vacuum interrupters, the VITS60M provides a 1kV-60kV dc test voltage and the VITS75 provides a 1-75kVdc for basic Go/No-Go Pass/Fail test results.
The unit's LCD display indicates:
- Test duration
- Test voltage being applied
- Measured leakage current
- Wheither the vacuum interrupter passed or failed the test
- In addition to results being shown on the LCD display, panel lamps also indicate the Pass or Fail condition of the vacuum interrupter
Below are representative screen shots while testing a vacuum interrupter with the VITS60M. Hover over each image for a larger view
Vacuum integrity
initial test seup
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Selecting maximum
test voltage
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Test in progress
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Interrupter failed test
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Interrupter passed test
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The VITS60M and VITS75M both can also function as a megohmmeter and provide 2.5/5/10kV dc for performing insulation resistance tests of various insulating elements of the circuit breaker, contactor or other electrical equipment under test.
Automated test routines are incorporated for polarity index and absorption rate when the VITS60M or VITS75M is performing as a megohmmeter/insulation resistance tester. The test sets provide programmable leakage current thresholds and test durations.
The unit's LCD display will show:
- Test duration
- High voltage being applied
- Current and resistance values being measured
- The unit will also calculate and display:
• Absorption ratio
• Polarity index of the element being tested
Below are representative screen shots of the VITS60M while perfoming an insulation resistance test. Hover over each image for a larger view
Selecting megohmmeter - insulation
resistance test function
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Test in progress
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Test completed including
insulation resistance,
aborption ratio and
polarity index
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