5

3 12

3.12 Ambient and operating temperatures

Ambient and operating temperatures

Temperature is of prime importance for the proper functioning

of discharge lamps (Fig. 127a/b). In general, fluorescent lamps are very sensitive to changes in the ambient temperature (see section 3.6: Effects of temperature).

Fig. 127a. Relative values of luminous flux (Φ), lamp voltage (Vl ), lamp current (Il ) and lamp wattage (Pl ) as a function of lamp head temperature, for a PL lamp.

Fig. 127b. Relative values of luminous flux (Φ) as a function of the ambient temperature and the burning position (PL lamp).

%

120 100 80 60 40 20

Il

Pl

Φ

Vl

recommended temperature range

20

30

40

50

60

70

lamp head temp. (˚C)

Φ(%)

100 80 60 40 20 0

-20

0

20

40

60

 

ambient temp. (˚C)

For the total system the ambient temperature also is of great importance, due to the fact that certain minimum and maximum operating temperatures are specified for the various components.

Minimum temperatures

1) Lamps

Supplied with the nominal voltage, fluorescent lamps will start quite normally at temperatures down to approx. -20 ºC.The minimum allowed temperature depends on lamp type and starting system, which determines the maximum ignition time (ranging from 2 to 20 seconds). Also the circuitry (leading or lagging) has influence on the ignition process.Two lamps in series normally ignite less easily than the one lamp circuitry. In the lamp data sheets the minimum temperature and the resulting ignition time can be found for the various circuits. Below these specified temperatures smooth ignition cannot be guaranteed.

In the table below, the ignition time of a PL-L 24 W lamp (in sec) is given as a function of lagging or leading circuitry, nominal or sub-nominal supply voltage, type of starter and ambient temperature.

Circuit

Lagging

 

 

 

Leading

 

 

 

 

 

 

 

 

Voltage

Nominal

Nominal -8%

Nominal

Nominal -8%

 

 

 

 

 

 

 

 

 

Starter

S10

ES08

S10

ES08

S10

ES08

S10

ES08

 

 

 

 

 

 

 

 

 

Ambient temp. ºC

 

 

 

 

 

 

 

 

-30

10

2

*

2

*

*

*

*

-25

7

2

*

2

20

2

*

2

-20

6

2

12

2

8

2

15

2

-15

6

2

12

2

8

2

15

2

-10

6

2

10

2

7

2

14

2

-5

6

2

10

2

7

2

11

2

0

6

2

10

2

7

2

11

2

+5

6

2

9

2

6

2

8

2

 

 

 

 

 

 

 

 

 

* Proper ignition not guaranteed.

133

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Philips Electromagnetic Lamp manual Ambient and operating temperatures, 133, Minimum temperatures Lamps
Page 26 Page 28

Electromagnetic Lamp specifications

The Philips Electromagnetic Lamp is a transformative lighting solution that enhances both indoor and outdoor spaces. Designed to integrate cutting-edge technology with energy efficiency, this lamp offers a range of features tailored for diverse applications, from residential to commercial use.

One of the primary features of the Philips Electromagnetic Lamp is its powerful electromagnetic technology. This technology allows for efficient energy conversion, resulting in superior light output while consuming minimal electricity. The lamp is engineered to provide a high lumen per watt ratio, making it an environmentally friendly choice for those looking to reduce their carbon footprint without compromising on brightness.

The durability of the Philips Electromagnetic Lamp is another significant characteristic. Built with robust materials, it is designed to withstand various environmental conditions. Whether exposed to heat, moisture, or dust, this lamp guarantees longevity and reliable performance. Additionally, its resistance to temperature fluctuations makes it ideal for a range of settings, including industrial environments where resilience is essential.

In terms of versatility, the Philips Electromagnetic Lamp shines brightly. It is available in multiple wattages and color temperatures, enabling users to select the perfect lighting for different spaces. From warm white shades ideal for cozy home environments to cooler, brighter options suited for workspaces, this lamp adapts to individual needs and preferences.

Moreover, the lamp incorporates advanced light distribution technology. This ensures an even spread of light without dark spots or harsh glares, enhancing visibility and comfort. It is particularly beneficial for large areas needing uniform illumination, such as warehouses, parking lots, and public areas.

Another key feature is its compatibility with smart lighting systems. Many models of the Philips Electromagnetic Lamp can connect to smart home platforms, allowing for remote control, scheduling, and automation. This modern integration enhances user convenience and promotes energy savings by enabling users to optimize their lighting usage according to their routines.

In conclusion, the Philips Electromagnetic Lamp is a perfect blend of efficiency, durability, and advanced technology. Its electromagnetic capabilities, long-lasting construction, diverse options, and smart compatibility make it an outstanding choice for anyone seeking a sustainable lighting solution without compromising on performance.
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