The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Son of Sparky
by sparky
58 minutes 49 seconds ago
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
230 or 345 kV transmission lines?
by annemarie1
10/12/16 01:23 PM
Is this a fix or just a bandaid?
by gfretwell
10/10/16 06:49 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 11
renosteinke 6
HotLine1 6
ghost307 5
Potseal 4
Who's Online
0 registered (), 261 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#36007 - 03/27/04 02:47 AM trouble shoot HID light ?
rizer Offline

Registered: 01/03/04
Posts: 90
Loc: bradenton ,fl.,usa
can any one tell me what steps you would go through to trouble shoot an HID light ?

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....

#36008 - 03/27/04 04:46 AM Re: trouble shoot HID light ?
electure Offline


Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA
The steps involved, although basically the same, will depend on the type and size of HID light you're working on.
A very handy source of information is available from Advance Transformer.


It's also available in booklet form from them

[This message has been edited by electure (edited 03-27-2004).]

#36009 - 03/29/04 06:43 AM Re: trouble shoot HID light ?
Scott35 Offline

Broom Pusher and

Registered: 10/19/00
Posts: 2724
Loc: Anaheim, CA. USA

There are several methods for testing an HID fixture's components, some of which require basic testing items - others require advanced test equipment.
Also, the type of Lamp will greatly affect the testing principles.

Basic tests may be performed with simple DVMs, Ohm Meters and Ammeters.

Ohm Meters are used to verify continuity through the Ballast's Windings, through the Lamp Holder and to check the Capacitor (if used) for short / open conditions.

Volt Meters are used to check input Line Voltage, Open Circuit Voltage and Lamp Voltage (disconnect Pulse Ignitors when used).

Ammeters are used to check for Input "Idle" currents, and Short Circuit current levels.

Simple "Non-Tester" tests may be performed with Incandescent Lamps or Mercury Vapor Lamps placed in the circuit.

Testing things like the output of a Pulse Ignitor requires something that can withstand the high voltage pulses, and display their frequency + amplitude and duratin.
An Oscilliscope works best.

Testing an HID Lamp requires a Regulated Power Supply type of a test device.
A normal Ohm Meter will read infinite Resistance (like an open circuit) on a good Lamp.
They are Arc Tubes, so testing them requires advanced methods (or simply try using the Lamp in a known operable fixture of equal type - this is a very efficient and low cost test method!).

Let me know what type of tests you plan to perform, and I can give you some testing examples, which do not require the use of hi $$$ testers.

Need to know Lamp type (LPS / Merc / Metal Halide probe start, or HPS / MH Pulse start), and how large (Wattage) of Lamps.
Can give test examples to cover nearly all scenarios, but do not require expensive testers.

The link that Scott (Electure) provided is really good - and may have all you need.
If not, or you have additional conserns / questions, let me/us know.

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

#36010 - 03/29/04 03:59 PM Re: trouble shoot HID light ?
rizer Offline

Registered: 01/03/04
Posts: 90
Loc: bradenton ,fl.,usa
thank you both i'm printing the troubleshooting section now and appreciate your answers!


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals