Big'G'

Ballast wattages

5 posts in this topic

Hey Hey

 

Long time no speak!  I have a digital ballast with 250W, 400W and 440W available. I have a 400W bulb thats suited to run better on digital ballasts. My questionb is why is there a 440W selection ?

 

 

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If I understand correctly, there is a 430-Watt bulb with a blue-spectrum boost.  Such a bulb would overdrive a 400-Watt ballast.

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you can "override" any 400w hps and by that I mean you can crank it up 10% or in this case 440w. there are also 600w and 1000w ballasts with dimable and extra selection.

it is good to check in the shop if the bulb is dimable/overridable but with philips, hortilux, lumatek, sylvania I didn't have problems(400 and 600w ballasts and bulbs)

you have two types of ballasts: magnetic and digital. magnetic are those big and heavy ones that buzz and heat up. they last about a year and than you have to rewire it pr buy a new one(costs almost the same) digital is the one you have. they have a regulator so you can dimm or override the bulb. also, you can put the ballast on 250w and put a 250w bulb in there and it will work. just dont turn a bulb to more that 10% of its power, e.g. 250w bulb max 275, 400w bulb max 440, 600w bulb max 660. new doubleended gavitas go up to 1150w(the bulb is rated 1000w)

anyway, always check in the shop where you bought the equipment or come back here ;)

bless

man

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430w bulb you talk is a old CMH model that work ONLY on a specific ballast(if we talk about the same bulb)

you must NOT forget that the frequency and voltage(V) are the most important. ballast and bulb must be compatible. so read the labels and specifications. nobody needs a blown up bulb in their grow.

peace

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ManUbuntu,

hey great information.  I admit I havent worked with those bulbs before, only had heard of them.

But now I want to do a bit more research...

Thanks

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