Danny;

From the descriptions, it sounds like you have the setups for the 100 Volt version of the 150 Watt HPS (ANSI S56) Lamp + Ballast.

I'll insert Schematics for proper connections, and Ignitor reference numbers (Advance brand). Verify these items are 1:1 for your equipment.

If you have another S56 Lamp which is known to be operative, try using it for testing the fixture in question. Let it run for at least an hour. If possible, let it run for upto 8 hours.

If that Lamp operates correctly, then return the other S56 Lamp for replacement.

If the known good Lamp cycles only in this fixture, verify correct input voltage + stable voltage over a period of time. Check at the Ballast's input. Look for drammatic lows and/or highs. If the voltage is >10% of the rated voltage for the Ballast, there's your problem. If voltage drops are found, that's another problem.

If voltage is OK, then check the Capacitor for its state of health. If failing, replace it with equal size and voltage rating.

If both voltage and Capacitor are OK, swap the Ignitor with a known good one and see if this results in stable operation. If it does, return the Ignitor for replacement.

If all these tests do not turn up a bad peripheral item, send the entire Ballast kit back for replacement. If you get this far, the Ballast was not wound properly and there is no field modifications to do.

Here's some Schematics for your reference:

[Linked Image]

Image 1: CWA Ballast for 100 Volt High Pressure Sodium Lamps.
* This is what your Ballast should look like (connections + peripherals wise)

[Linked Image]

Image 2: Linear Reactor Ballast for 55 Volt High Pressure Sodium Lamps.
* Yours should not look like this!

These Schematics, along with others, may also be found at ECN's Technical Reference Section, using the following link to the Section's Menu:

Menu For Technical Reference Section

Correct Ignitor Catalog Numbers (Re: Advance Transformer Co.):

* Short Range (upto 2 feet): LI501-H4
* Long Range (upto 50 feet): LI501-J4

Good luck!

Scott35

Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!