I'm also doing a project for Vector. To upgrade OCB panel incandescent lamps with LED made assemblies.
These are 130 Volts filament lamps which are run at 120 Volts DC and give status indication of substation OCB's.
The lamps last normally about 2 months, and fail often earlier when a breaker trips a few times.
The lamps are B22 lamps.
I crush the lamp, clean out fitting and fit 2 series resistors and 3 or 5 LED's and a blocking diode.
A piece of 25 mm Ø conduit as outer housing.
The problem of lamps failing is now solved.
It takes me about 10 minutes per complete lamp assembly which will last now for a very long time.
The factory made LED lamps don't meet our requirements or are simply not available yet.
