Used by the grow industry, Professional 400 Volt HPS lamps have a number of key benefits which makes them superior to standard HPS lamps - even ones being run from top-quality digital ballasts.
A 400 Volt HPS lamp is much more efficient than a standard HPS lamp. Both systems consume 1000 Watts and therefore cost exactly the same to run but the Pro HPS lamps run at a higher voltage and a lower current. 400 Volt Pro HPS lamps produce more light for the same power consumption and will give at least 10% higher yield compared to even the best standard HPS systems. In fact, when they are seen side-by-side, the HPS Pro lamps are noticeably brighter, run cooler and the light they produce is slightly whiter. So in addition to them giving a higher yield, plants grown under a 400 Volt Pro HPS are healthier, happier and are at less risk of heat damage too.
The way that the system works is that UK mains power (230 Volts) is fed directly to the combined ballast and reflector via a standard mains power lead. The special ballast then converts the mains electricity to drive the special double ended 400 Volt / 1000 Watt EL lamp.
These 400v / 1000w lamps maintain their efficiency and light output for much longer than standard HPS lamps. In fact, they will normally last at least a year before they need to be changed out. It should be noted that normal HPS lamps and 400 Volt Pro HPS lamps are NOT interchangeable with different ballasts. Standard HPS lamps should only be used with standard or digital 230 Volt ballasts. 400 Volt Pro HPS lamps should only be used in lighting systems with a 400 Volt Pro HPS ballast like with this Gavita product
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