Measuring waveforms of 20Khz Inverter based welders and UPS

 
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Guest
PostPosted: Wed Mar 26, 2008 3:05 pm    Post subject: Measuring waveforms of 20Khz Inverter based welders and UPS Reply with quote
Can these PC based scopes be used for measuring waveforms under load conditions of 3 phase 415V Inverter based welders using 100/150 or 200A IGBT's? And at the secondary Diode (upto 400A and 30~85V). What are the recommended parts to buy alongwith the scope. Are the scopes Isolated to prevent device damge?
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picojohn
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Joined: 11 Jun 2007
Posts: 251

PostPosted: Thu Mar 27, 2008 12:21 pm    Post subject: Reply with quote
Hello Guest,

You may use most of our oscilloscopes (http://www.picotech.com/oscilloscope.html) with a suitable current clamp for the measurements that you require.

Our own range of current clamps do not cover the combination of frequency and current that you require but, you may well find suitable clamps elsewhere.

Regards
John
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Guest
PostPosted: Sat Mar 29, 2008 3:59 pm    Post subject: Measuring waveforms of 20Khz Inverter based welders and UPS Reply with quote
Would appreciate your recommendations on the probes to be used for this application mainly voltage measurements.
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picojohn
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Joined: 11 Jun 2007
Posts: 251

PostPosted: Mon Mar 31, 2008 8:40 am    Post subject: Reply with quote
Hello Guest,

Our own range of high voltage differential probes http://accessories.picotech.com/oscilloscope_probes.html will meet your requirement.

Regards
John
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