1. Metal halide lamps compatible with HPL and SON gear
HPI(T) “Plus” lamps
Metal halide lamps compatible with HPL and SON gear 01
This presentation is on the new range of HPI Plus (ovoid & tubular) lamps.
The presentation covers:
- Product range.
- Product specifications.
- Circuit information.
- Competitor information.
- Features and benefits on SON gear.
- Application examples.
- More frequent questions and answers.

2. HPI lamps Nomenclature
HPI High Pressure Iodides
Plus Compatible both on HPL and SON gear
BU Base up
S Internal starter
P Protected (Teflon coating)
T Tubular 02
Even though the technology for HPI lamps exists since the 1960’s there have been continuous improvements in the product performance. The HPI Plus range is the latest innovation for these products. From the market viewpoint the last few years have shown a significant increase in the use of these lamps for industrial areas, flood lighting and shop lighting due to the bright white light and the good colour rendering.
Nomenclature :
HPI - High Pressure Iodides are the salts used in the discharge tube, which along with the mercury generate the white light of HPI lamps.
Plus - Plus is the term for the new range of 250/400 W metal halide lamps which have been designed to run on both HPL gear (BHL ballast) or HPI gear (BHL ballast and SI 51 ignitor) and SON gear (BSN ballast and SN 58 ignitor).
BU - Base Up refers to the ovoid lamps which burn vertically. These lamps are used in industrial and general shop lighting in hyper markets.
S - ‘S’ is for version with internal starter so no external ignitor is required to ignite this lamp.
P - ‘P’ for protection refers to lamps with a protective Teflon coating on the outer -bulb. In case of end of life explosion the Teflon coating ensures that the glass fragments are contained within the Teflon making this lamp suitable for open luminaires.
T - Tubular lamps which are used in area and floodlighting in a horizontal burning position.

3. Product introduction 1999 HPI -T (tubular) types starting October 1999
Introduction of the new Philips HPI(T) “Plus” range of lamps.
All HPI BU(-S)(-P) and HPI T ( 250 W & 400 W) lamps are both mercury and SON gear compatible.
HPI -T (tubular) types starting October 1999 03
In 1999 the new range of Philips HPI (tubular) “Plus” lamps was introduced.
The -T version is SON gear compatible since October 1999.
The -BU (ovoid) types are already from 1998 available in the “Plus” version.

4. Product range HPI Plus BU(S)-P ovoid lamps
BU BUS BU-P BUS-P
250W
400W
Luminaire Closed Open
Gear HPL or SON 04
The product range for the -BU types is built up as follows:
In the 250 W there is only one version - which has to be used in closed luminaires. The circuit must have an ignitor.
With the 400 W there are more possibilities with the -BUS type which has an internal ignitor and can therefore be retrofit with HPL lamps.
The -P version with the protective Teflon coating makes it suitable for open luminaires.

5. Specifications HPI Plus BU(S)(-P) ovoid lamps
HPI Plus W BU W BU(S)(-P)
Gear HPL/HPI SON HPL/HPI SON
Lamp power W
Luminous flux lm
Luminous efficacy lm/W
Correlated colour temp K 05
Specifications of HPI Plus BU(S) (-P) ovoid lamps
The specifications of the HPI Plus BU(S)(-P) lamps depend upon whether they are operated on HPL/HPI gear or SON gear.
The table above shows the main light technical and electrical performance characteristics of the HPI Plus BU(S)(-P) lamps operated on both HPL/HPI gear and SON gear.
Note: The maximum permitted bulb temperature for the “P” Teflon coated types is 260°C, 90°C lower than the normal unprotected types, which have a maximum permitted bulb temperature of 350°C.

6. Product range HPI(T) Plus T tubular lamps
250 W
400 W
Luminaire Closed
Gear HPL or SON
New ! 06
The 250 W and 400 W tubular lamps are suited for closed luminaires and require an external ignitor.
NEW: These lamps are available in the Plus version since October 1999.

7. Specifications HPI(T) Plus (tubular) lamps
HPI-T Plus W T W T
Gear HPL/HPI SON HPL/HPI SON
Lamp power W
Luminous flux lm
Luminous efficacy lm/W
Correlated colour temp K 07
Specifications of HPIT Plus (tubular) lamps
The specifications of the HPIT Plus lamps depend upon whether they are operated on HPL/HPI gear or SON gear.
The table above shows the main light technical and electrical performance characteristics of the lamps when operated on both HPL/HPI gear and SON gear.

8. Features / benefits HPI(T) Plus on SON gear
Higher luminous flux Lower investment costs
Compatible on HPL/SON gear Always works
Lower colour temperature Attractive for retail
Can replace SON lamps Upgrade from yellow to white light
Replacement of competitor No compatibility problems metal halide lamps
Same gear tray Minimizes gear stock / costs 08
Customer benefits of HPI Plus (ovoid & tubular) lamps on SON gear
1.- Higher luminous flux:
The lumen output of the lamps increases when burnning on SON gear compared to HPL gear and this results in lesser number of luminaires required and therefore lower initial investment costs.
2.- Compatible with HPL and SON gear:
In the metal halide market the present situation is that Philips HPI lamps are only compatible with HPL gear whereas the lamps of most suppliers are compatible with SON gear. With the introduction of the HPI(T) “Plus” range Philips will be the only supplier with lamps which are compatible both on HPL and SON gear. The benefit of this in the distribution is less confusion and reduction in stocks since Philips lamps will always work.
Extensive testing in our laboratory has shown that the lifetime and lumen maintenance are the same when HPI lamps are burnt on HPL gear or on SON gear.
3.- Lower colour temperature:
When Philips HPI lamps are run on SON gear the colour temperature is K lower than when run on HPL gear. This warmer colour temperature makes the lamp suitable for general lighting in big shops.
4.- Can replace SON lamps:
HPI Plus lamps are electrically compatible with SON circuits. Metal halide and HPI lamps burn at a higher temperature than SON lamps and care should be taken that maximum temperatures of components in a luminaire are not exceeded when replacing SON lamps with HPI lamps.
5.- Replacement of competitor lamps:
This point has been covered under point 2.
6.- Same gear tray:
Some OEM’s prefer to standardize on one gear tray for various lamp types. With the HPI Plus lamps the OEM has now the opportunity of using the same gear tray for both HPI or SON lamps.

9. Industrial installation example HPI(T) Plus on SON gear & the C.O.O.
Three solutions for the same lighting level.
Industrial hall dimensions: 30 x 30 x 8 m.
Lamp price level from net to retail price.
Considered: 0.15 NLG / kWh, system power, installation and maintenance costs, group replacement. 09
We will show an example for indoor industrial application. A hall of 30 x 30 x 8 m lit with three different 400W lamps. Still SON is the lowest C.O.O. solution (total cost for the owner including both initial investment and running costs) due to the number of luminaires installed.
But when white light is required / desired HPI-BU Plus is the best option. With the new PLUS version we improve this advantage.

10. Upgrade possibility From HPL to HPI(T)Plus
Better white light.
Lower C.O.O. 10
This graph compares the running costs per year with the initial investment costs (in NLG)
The lamp price levels shown indicate the difference between various low quality and high quality lamps found in the market.
For new installations:
Installing new HPI(T) Plus lamps results in a must better white light at a lower cost (less luminaires installed and better colour rendering).
For existing installations:
The HPI(T) Plus range offers the possibility of “up-lamping”. By replacing the HPL lamps (direct change with -BUS version) we can have an higher lighting level and higher light quality at similar cost.

11. Upgrade possibility From HPL to HPI(T) Plus11
Or put at its simplest;
For New installations:
Installing new HPI(T) Plus lamps on HPL gear results in more light of a better quality at a lower cost (less luminaires installed and better colour rendering).
For existing installations:
Replacing HPL lamps (direct change with -BUS version) we can have an higher lighting level and higher light quality at similar cost.

12. Upgrade possibility New: from SON to HPI(T)Plus (from yellow to white light)
Better light quality. 12
For new installations:
Installing HPI(T)Plus lamps instead of SON lamps (with have yellow coloured light) results in natural / high quality white light with better colour rendering at a similar cost.
For existing installations:
HPI range offers the possibility for “up-lamping” by replacing the SON lamps (direct change).

13. Upgrade possibility New: from SON to HPI(T)Plus (from yellow to white light)13
-or put simply :
Up-grade your SON installation to pure white light by simply replacing the lamps with new HPI(T) Plus lamps.

14. Outdoor sport example Tennis course: Three solutions14
Take as an example a tennis court.
The court can be lit using 3 options of 400W lamps ie 400W SON-T lamps; Old 400W HPI-T lamps or new HPI-T Plus lamps.
Poles height: 10 m
Luminaire type: TEMPO
Number of luminaire: 8

15. Outdoor sport example Tennis course: Three solutions15
The table in this slide shows the light level achieved with each option.
While the SON-T solution still gives the highest light level, the new HPI-T Plus lamps installed in the SON-T luminaires gives more light than the old HPI-T lamps which run on HPL gear only. The new HPI-T Plus lamps also give pure white light of course, which can be quite desireable even for amateur level tennis.

16. Circuit options (1) HPI Plus BUS(-P) lamps
HPL circuit
BHL ballast
No external ignitor required
Lowest cost option
SON circuit without ignitor (NEW)
BSN ballast
BHL L C La N 19
Circuit options HPI Plus BUS(-P) lamps (1)
Since BUS lamp has an internal ignitor the circuit does not require an external ignitor.
The lamp can be run using a HPL ballast or a SON ballast
HPL circuit
This is one of the basic circuits using the high-pressure mercury lamps HPL ballast (BHL)
Consequently this is the most inexpensive circuit, as no external ignitor is required.
By specifying this circuit, self starting HPI Plus BUS(-P) lamps have to be used.
SON circuit without ignitor (NEW)
It is also possible to use the “S” self starting lamp with the BSN SON ballast, as long as no external ignitor is used in the circuit.
This has the advantage of reducing cost compared to the normal SON circuit.
BSN L C La N

17. Circuit options (2) HPI Plus BU(-P) lamps / HPIT Plus lamps
SON circuit BSN ballast
and SN 58 ignitor
Semi parallel ignitor (4 to 5 kV pulse)
Ignitor tap on ballast
HPI circuit (HPL circuit with ignitor)
BHL ballast and SI 51 ignitor
Parallel ignitor (750 V pulse)
No ignitor tap on ballast L N C
BSN
SN58 La 20
Circuit options HPI Plus BU(-P) lamps and HPI-T Plus lamps (2)
SON circuit
This is the higher specification circuit using the SON (BSN) ballast and SN58 ignitor. The SN58 is a semi parallel (3 wire) ignitor which gives a maximum ignition pulse between 4 and 5 kV. Consequently an ignitor tap is needed on the ballast, and the ballast has to be insulated to withstand high voltage peaks. Ballasts protected by thermal cutouts (although not necessary) are available as an option.
Also available as an option are self stopping ignitors (SN58 T5). Although there is no indication that the lamps will cycle at the end of life, self stopping ignitors can be used to eliminate RFI (radio frequency interference).
Consequently this will be a somewhat more expensive circuit than both the basic HPL and HPI circuits.
In both circuits negligible current passes through the ignitor, so they do not produce audible hum. They also offer the possibility of locating the ballast/ignitor at considerable distance from the lamp, depending on the cable capacitance of the cable being used.
By specifying this circuit HPI Plus BU(-P) lamps or HPIT Plus lamps have to be used.
HPI circuit
This is the other basic circuit using the high-pressure mercury lamps HPL ballast (BHL) and the SI 51 ignitor. The SI 51 is a parallel (2 wire) ignitor which gives a maximum ignition pulse of only 750V. Consequently no ignitor tap is needed on the ballast and so the ballast does not have to be insulated to withstand high voltage peaks. End of life rectification problems are not an issue for HPI Plus lamps so ballasts protected by thermal cutouts are not necessary.
Consequently this is also an inexpensive circuit.
By specifying this circuit HPI Plus BU(-P) or HPIT Plus lamps have to be used. L N C
BHL
SI51 La

18. Gear (1) HPI Plus lamps (HPL / HPI circuit)
Lamp type Ballast Ignitor Capacitor
Type Losses (W) (F/V)
HPI Plus BHL SI /250
250 W BU & T
HPI Plus BHL SI /250
400 W BU(-P) &T
HPI Plus BHL Not /250
400 W BUS (-P) required
(Nominal mains: 220, 230, 240V / Frequency: 50, 60Hz) 21
Gear for HPI Plus BU(-P) and HPI-T Plus lamps (1)
This table gives an overview of the gear required for HPI Plus lamps which require an external ignitor.
The gear is available in both ‘BASIC’ and heavy duty encapsulated options. Various voltage and frequency combinations are possible (the power losses heavy duty are dependant on the voltage/frequency of the ballast).

19. Gear (2) HPI Plus (SON circuit)
Lamp type Ballast Ignitor Capacitor
Type Losses (W) (F/V)
HPI Plus BSN SN 58, 32/250
250 W BU & T SN 58 T5*
HPI Plus BSN SN 58, 45/250
400 W BU(-P) & T SN 58 T5*
HPI Plus BSN Not /250
400 W BUS (-P) required
(Nominal mains: 220, 230, 240V / Frequency: 50, 60Hz)
* Self stopping ignitor 22
Gear for HPI(T) Plus BU(S) (-P) lamps (2)
The above table gives an overview of the SON ballast, capacitor and ignitor which can be used to run HPI(T) Plus lamps.
The gear is available in both ‘BASIC’ and encapsulated versions for the 250 and 400 W.
Various voltage and frequency combinations are possible. The power losses are dependant on the voltage/ frequency of the ballast.

20. Advantages vs competitor lamps HPI(T) Plus lamps
3 band Na/TI/In iodide 2 band Na/Sc filling Philips
Excellent lumen maintenance Poor lumen maintenance
Compatible with both HPL Mainly on SON systems and SON circuits
Natural colour impression Greenish colour impression
Can ignite Require on low voltage ignitors high voltage ignitors 23
Benefits of HPI(T) Plus lamps on SON gear
Advantages vs. competitor metal halide lamps
Our HPI(T) Plus BU(S)(-P) lamps have a unique 3 band Na/Tl/In (Sodium/Tallium/Indium) iodide filling. This was chosen for 3 very good reasons:
1. good lumen maintenance during life
2. a natural white colour impression (colour point on the black body locus)
3. excellent colour stability over life.
Most suppliers tend to use a 2 band Na/Sc (Sodium/Scandium) filling known as multi vapor despite having one metal iodide less than our lamps! The 2 band filling is chosen because of its initial lumens. However it has 3 serious disadvantages:
1. poor lumen maintenance
2. greenish colour impression (colour point above the black body locus)
4. colour stability problems.
This is particularly true when run on SON gear. That is why in the USA, all reputable manufacturers specify CWA gear (Constant Wattage Autotransformers) for their Na/Sc lamps.
5. Teflon Coated Versions (see next slide )

21. Advantages vs competitor lamps HPI(T) Plus lamps - why Teflon protection ?
Protection is needed where metal halide lamps are used in open luminaires to contain the fragments of an arc tube in the unlikely event of its explosion at the end of lamp life; or to contain the fragments of the outer bulb in case of external disturbances.
Two protection mechanisms are available: to protect the arc tube with a shatter shield ( eg Osram ) or to cover the whole lamp with a teflon coat (eg Philips) 24
Why Teflon coated lamps are the best solution for open luminaires

22. Advantages vs competitor lamps HPI(T) Plus lamps - why Teflon protection ?
A shatter shield only provides protection when the arc tube explodes and not in the case of external disturbances
When using Teflon damage caused to the lamp both by internal or external factors are contained within the teflon envelope
Metal halide lamps designed for usage in closed luminaires will be affected in their operation when such internal changes as the addition of a shatter shield over the arc tube are made. Laboratory results show an increased sodium migration leading to short lamp life. 25
Why Teflon coated lamps are the best solution for open luminaires

23. Advantages vs competitor lamps HPI(T) Plus lamps - why Teflon protection ?
A program of simulated explosions proved conclusively that the Teflon coated solution is 100% reliable. This is not in the case with the shatter shield. 26
Why Teflon coated lamps are the best solution for open luminaires

24. Questions and Answers
Q1. Are Philips HPI(T) Plus lamps compatible both on mercury and sodium gear ?
A1. Starting end 1999 all Philips HPI 250 and 400 W lamps are compatible on mercury and sodium gear.
The lamps will be labeled HPI(T) Plus.
Q2. What is the lifetime and maintenance on SON gear ?
A2. The lifetime and lumen maintenance of HPI Plus lamps
are the same on mercury and SON gear. 33
Q & A list (1)
Most frequent questions and the proper answers.

25. Questions and Answers
Q3. Can Philips HPI(-T) Plus lamps replace HPS(SON) lamps?
A3. HPI(-T) Plus lamps are electrically retrofit with HPS lamps.
Care should be taken to ensure the maximum temperature
limits of the lamp and other system components in the
luminaire is not exceeded.
Q4. Can the new “Plus” types be used to maintain the existing
Philips installations?
A4. When the lamps are operated on HPL gear (this is the case
for existing Philips installations) there are no differences
in performance compared with the old versions. 34
Q & A list (2)
Most frequent questions and the proper answers.

26. Questions and Answers Q5. Why Teflon protected version (-P)?
A5. Protection is needed where metal halide lamps are used in open luminaires to contain the fragments of an arc tube in the unlikely event of its explosion at the end of lamp life; or to contain the fragments of the outer bulb in case of external disturbances.
Two protection mechanisms are available: arc tube with
a shatter shield or to cover of whole lamp with a Teflon coat.
Shatter shield only provides protection when the arc tube
explodes and not in the case of external disturbances. With the Philips Teflon solution both potential problems are solved. 35
Q & A list (3)
Most frequent questions and the proper answers.
Why Philips choice the Teflon coating option? The shatter shield solution only partially solve the problem.

27. Questions and Answers Q6. Can HPI(T)Plus lamps replace ALL competitors
metal halide lamps?
A6. Yes. The unique feature of the Philips HPI(T)Plus range of lamps is that they are compatible on both HPL (Mercury) and SON gear. Some Competitors lamps run on HPL gear only while others run on SON gear only.
The Philips HPI(T)Plus range of Metal Halide lamps can run on both sets of gear so they can replace all competitors lamps of this type. 36
Q & A list (4)
Most frequent questions and the proper answers.
Can Philips HPI(T)Plus lamps replace all competitors metal halide lamps? Yes.

28. Philips HPI(T) Plus Compatibility on HPL and SON gear A new opportunity37
So, Philips HPI(T) Plus BU(S)(-P) lamps running on SON gear are a perfect solution for a lot of application areas, offering exciting new business opportunities for Philips and our PARTNERS IN BUSINESS!