Philips Dynapower lamps

Philips Dynapower

The Philips Dynapower lamp range covers all of the commonly used Amalgam UV lamps seen in older as well as modern UV systems.


Note the size of the filament, and the helictical cable which keeps the cable out of any minor moisture ingress or condensation which is often found in the quartz sleeves.

The lowest power lamps commonly seen is the 230 watt lamp.

The XPT 230 is the Philips part number for the Wedeco SLR 25143 it is a perfect retrofit, it is also is fully compatible with the older Wedeco ballast cards as well as the newer ones.

The Scada systems recognise the lamps and report their performance accurately as it does on the whole range.

They are more efficient than the SLR 25143 and offer greater UVC intensity as well as a longer rated life of 16000 hours with Wedeco ballasts but 20000 hours when used with the Philips dynapower ballast.

Usually seen in older UV systems this lamp, particularly if used with the Philips Dynapower driver, can successfully update a system which may otherwise be considered obsolete.

Next up is the XPT 260 this lamp was on a par with the Ecoray lamps from Wedeco usually called SLR 32143/4P

They give about 5% more UVC for any given power and best of all reach maximum intensity at 90%power so never needed to go to 99% power.

This leads to an immediate 10% Energy saving over the Ecoray lamp.

Secondly the lamp has a parabolic dimming curve not a linear one, which means the set points can be adjusted to the greater efficiency of the lamp generating a further 8% energy saving on a typical system.

Wedeco ecoray dimming curve.Philips HO dimming curve.

They also dim to 50 % even at end of life.

The energy saving plus a longer rate life made this a very successful product.

You can see a case study complete with audited results in the case studies section.

However this lamp has be redesigned and an even more efficient version has been developed.

This a the XPT 260 HO is has all of the same benefits except it produces and additional 20% UV intensity for any given power setting.

The advantages are obvious, if you have a system which is teetering on the consent to discharge limits this lamp will give you a substantial margin of error.

If your system is perfectly adequate then you can use the dimming to greatly reduce your energy costs.

20% of the power consumption of the typical bank is a considerable amount when taken over a full year.

If the hydraulics allow then you may be able to close down one channel on a multi channel system.

Closing down banks in a single channel system has to carefully considered as the “dwell time” is an important consideration and must be taken into account.

What we have found is that it is better to run two banks at 50% than one bank at 100% the energy saving is the same but you have complete redundancy should any unexpected even occur you have massive reserve capacity ready to deal with it.

This lamp represents the cutting edge technology you would expect from Philips.

The quality is of course superb.

Even the packaging is head and shoulders above the competition, easy to handle, great to work with and offers easy recycling and minimal waste.

Finally we have the High power range the 300/ 335 Watt.

This has been given the same treatment as the XPT 260 HO it shows the same results 20% greater UVC output for any given power setting.

The same technology is also to be found in the new versions which match the XLR30 lamp which is widely used in fresh water treatment plants.

There is little point in showing picture of the various lamps they all look almost the same what you will note on the Philips lamps is the increased size of the filament, the coiled lamp cables which keeps the cable out of any moisture which may be found in the quartz sleeves as is often found.

And of course the patented Philips inner lamp coating which accounts for the superior end of life performance and lack of solarisation even over 20000 hours this a bit of cheat because it is invisible to the naked eye.