Herb Forester
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I trust you, just reporting what I was told. Re-checked my notes and he definitely said Welthink are low-frequency square + sine wave while others (at the time) were only LF square. As for what that means, all I know is the lights come on and grow good plants. Maybe it's all wrong and the mustache-twisting China-man is lmfaoing at my embarrassment :eyepiece:Im not trying to be argumentative, just trying to be a good friend.
You can't have sine and square wave simultaneously on the same output channel. The Wellthink ballasts are square wave. And the Philips ballast remote distance is not limited to 5 or 6 feet, it is 30-33 feet with the proper wiring. The limiting specification is that the ballast to lamp wiring must be below 1000 picofarads capacitance, and this is right about 33 feet with the industry standard 16 AWG SO flexible cable. Trust me.
My reason for recommending the enclosed fixture was if you did run the 315 elite CDM lamp from a high frequency sine wave ballast, the likely outcome would be premature lamp failure, possibly a violent arc tube rupture. This is the reason all OEM ceramic metal halide manufacturers will not warranty lamps operated from high freq sine wave ballasts. The high freq causes excessive acoustic resonance of the arc and rattles the arc tube structure apart. With the high operating pressure inside metal halide arc tubes , especially of the 315 CDM, this possible violent arc tube rupture may breach even the outer shell of the protected or open rated lamps.
But like I said, I have not seen any ballasts made to operate the 315 CDM that are in fact high frequency sine wave. They are all Low Frequency Square Wave designs. Oh and all the 315 cdm ballast circuit boards that I have seen are made in China, even the Philips ballast that is assembled in Mexico.
That was two years ago~ haven't seen any problems with new welthinks at all.Just seen this thread. I'm kinda new here but figured I'd ad MO to the subject a second.
I seen the Welthink ballasts about 2 years back wail looking for equipment for a big op. If you google the name (& search a min) there are many bad reviews. Worst part is no one gets their warrantee honored. All resellers say "contact manufacturer" and the manufacturer don't return warrantee emails or calls.
This was an old complaint link but it dosent work anymore
To me a dollar to dollar comparison still has a big contributing factor wether their product quality and customer service is on point.
No,the commercial version uses the bulb horizontally instead of vertically,same philips ballast though.Some say these bulbs were built to run vert and there is a slight loss horizontally,hard to say.Most of the commercial ballast like SS,Gavita etc that stand up vertically were designed to be run in greenhouses so they would block less natural light,not really a consideration indoors.Is the reflector the only difference between the Sunsystem lec and the Commercial version?
I can get the Commercial 315w for $370 at my local shop.
Anyone running the Commercial 315w?
Now I'm second guessing on pulling the trigger on the Commercial setup.No,the commercial version uses the bulb horizontally instead of vertically,same philips ballast though.Some say these bulbs were built to run vert and there is a slight loss horizontally,hard to say.Most of the commercial ballast like SS,Gavita etc that stand up vertically were designed to be run in greenhouses so they would block less natural light,not really a consideration indoors.
Do you have another link? It didn't workDont think you can go wrong with any of them,Plenty to choose from.
375 is a smokin price if it comes with a bulb.
Im going to try the same as you,4 over a 3x8 in a run or 2 just to see how 315 works in flower,think ill try these(thanks WS!), of like a mini adjustawing.
I have the standard SS lec in veg and it works great so im sure the commercial will too.
Thank you for choosing Philips Lighting.
Our Product Manager has reviewed your inquiry and has provided the following response:
In late 2013 the igniter circuit was changed. The max wire capacitance is now 120 Pico farads, or approx. 6 ft. / 2 m.
If you are in need of further assistance, please reply to this e-mail or contact our Philips Lighting Customer Care Team at 1-800-372-3331.
Sincerely,
Customer Care Associate
Philips Lighting North America
they got good prices on lots of dif lights.has anyone bought from this site here,can you give any feedback on them?@fishwhistle I just found the Phantom 315w with remote ballast and bulb hood for $325
http://www.horticulturesource.com/p...zf3Q-PJs87EyrRVBNFrqTVcynFVxswNg00aAjqn8P8HAQ
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