Effect of increased voltage on ballast lighting

[PhaseShift]

What effect will increased voltage have on Metal Hallide and High Pressure Sodium lighting that are operating from ballasts.

For instance we have recently decided to increase taps on our transformer to slightly increase voltage and were wondering what longterm effects this would have on this type of lighting? Would the ballasts try to self regulate and account for this voltage increase?

Besides motors and lighting what other effects should be taken into consideration for increased voltage?

 

[benaround]

PS,

What was the voltage and what is it now ?

 

[PhaseShift]

PS,

What was the voltage and what is it now ?

I should have speified 480V level. We are talking about increases under 10%, lets say around the 500V range.

 

[steve66]

The ballasts shouldn't care as long as you stay in their voltage range. They will regulate the outupt, so the input current should drop a little.

 

[benaround]

I should have speified 480V level. We are talking about increases under 10%, lets say around the 500V range.

PS,

480V at full load would be ok, 500V at full load would go even higher when the heavy loads

are off!