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#28926 - 09/04/03 11:59 AM Ballast training
Tom Offline

Registered: 01/01/01
Posts: 1069
Loc: Shinnston, WV USA
Seeing the other post about AC/MC training reminded me of the site listed below. You'll pick up a few nuggets.
Few things are harder to put up with than the annoyance of a good example.

Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#28927 - 09/04/03 02:54 PM Re: Ballast training
Bjarney Offline

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
I spoke to a very knowledgeable support person at Advance Ballast about a little “pill-bottle” tester that I thought they gad offered for testing filament voltage at two-pin tombstone sockets. She said Advance prefers using true-RMS voltmeters, but that she knew that Universal {their competitor!} had offered some testers, and suggested calling them. describes a bi-pin-base tester for 30- and 40-watt-rapid start fixtures and a recessed-double-contact base version for 800/1500ma fluorescent fixtures. The HO model was called a “CT-8” but they have discontinued selling both in the last six months, according to an experienced phone-support guy there.

If I had to work on many rabid-start or HO ballasts, I would probably make up some test bases from discarded tubes with extension leads for a meter. {Acceptable filament voltages are listed in pdf troubleshooting guides.} Both companies’ support folks warned that the flashlight-lamp test procedure was OK for linear and electronic ballasts, but to be sure and use a true-RMS meter on high-frequency electronic ballasts for accurate results.

Both reps motioned that a good reading of filament voltage at both tombstones {or four for two-lamp ballasts} did not automatically mean that the fixture should work OK, but implied that if you didn't measure good filament voltages, there is no point in troubleshooting further.

[This message has been edited by Bjarney (edited 09-04-2003).]


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