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Appliances & Equipment
Application Examples of Energy-efficient Lighting Systems
T5 Lighting Project at Arsenal House
- The project involved replacement of 320 sets 3x18W T8 luminaires (with magnetic ballasts) with new 3x14W T5 luminaires at 27/F
- New luminaire complete with 3x14W electronic ballast & double parabolic reflectors designed to CIBSE LG3 Cat.II
Lighting Layout at 27/F, Arsenal House
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| Old 3x18W T8 Luminaire |
New 3x14W T5 Luminaire |
Electrical parameters of the old 3x18W T8 luminaire
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|
|
Voltage |
Current |
| Frequency |
49.99 |
RMS |
223.4 |
0.754 |
| Power |
|
Peak |
312.7 |
1.095 |
| W |
90 |
DC Offset |
0.2 |
-0.02 |
| VA |
168 |
C. F. |
1.4 |
1.45 |
| VAr |
142 |
THD Rms |
2.23 |
8.80 |
| Peak W |
244 |
THD Fund |
2.23 |
8.84 |
| Phase |
58olag |
HRMS |
5.0 |
0.66 |
| Total PF |
0.53 |
KFactor |
|
1.51 |
| DPF |
0.53 |
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Electrical parameters of the new 3x14W T5 luminaire
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|
|
Voltage |
Current |
| Frequency |
49.94 |
RMS |
221.8 |
0.22 |
| Power |
|
Peak |
308.5 |
0.316 |
| W |
48 |
DC Offset |
0.0 |
-0.03 |
| VA |
49 |
Crest. |
1.39 |
1.44 |
| VAr |
7 |
THD Rms |
2.30 |
8.60 |
| Peak W |
98 |
THD Fund |
2.30 |
8.63 |
| Phase |
8olead |
HRMS |
5.1 |
0.19 |
| Total PF |
0.99 |
KFactor |
|
1.19 |
| DPF |
0.99 |
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Current waveform of old 3x18W T8 luminaire
Current waveform of new 3x14W T5 luminaire
Summary Table of the T5 Lighting Retrofit
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Existing T8 Lighting System |
New T5 Lighting System |
% Change |
| Active Power (kW) |
28 kW |
16 kW |
- 42% |
| Power Factor. |
0.53 |
0.99 |
+ 87% |
| T.H.D. |
11% |
8.6% |
- 21.8% |
| Apparent Power (kVA) |
52.8 kVA |
16.2 kVA |
- 69% |
| Average Illuminance |
450 lux |
600 lux |
+33% |
| Lighting Power Density |
30 W/m2 |
18 W/m2 |
-40% |
2x80W High Output T5 Lighting System at Kowloon Bay Indoor Games Hall (Existing HID Lighting)
- New Design of 2x80W High Output T5 Lighting System at Kowloon Bay Indoor Games Hall (KBIGH) to suit various functions:
- Lighting Class I: 750 lux for top-level competition & training at international & national standard
- Lighting Class II: 500 lux for mid-level competition or high-level training at regional level
- Lighting Class III: 300 lux for low-level competition, general training & recreation activities, etc.
2x80W High Output T5 Lighting System at Kowloon Bay Indoor Games Hall (New Lighting Layout)
High Output T5 Lighting System at Kowloon Bay Indoor Games Hall (DALI Lighting Control Schematic)
Comparison of visual environment between existing HID and new High Output T5 Lighting System at Kowloon Bay Indoor Games Hall
 
Lighting Control using Digital Addressable Lighting Interface (DALI) :
 
Switching group & different scenes setting are set by computer & operate by simple push buttons
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