Wednesday, October 15, 2014

SBrand Vs EFFE Brand Lamp Comparisions

EFFE Lamps
 APPLICATION: To Light up a 10'X10'(100 Sqft) room with 700 TO 800 Lumen lamp effe-vs-sbrand-lamps-pdf-download
  DESCRIPTION  S Brand 6"-15W EFFE Brand 6"-6W   REMARKS
Optical
  Lamp lumen output                                                                        (Lumen)   672.1     724.02    >100 lm/Watt --- good saving in power consumption.
 >75 lm/Watt   --- moderate saving in power consumption.
 <60 lm/Watt   --- poor saving in power consumption.
 <50 lm/Watt   --- No point in using the lamp.
  Efficacy (Lumen/Watt)                                                                  (Lm/w)   43.25     103.43  
  LED make   -     Nichia    TOP Branded LED Manufacturers - Osram ,Nichia ,
 LUMI LED's , CREE Branded - Assured Quality and Life.
  No of LED's                                                                                          (Nos)   30     42  
  LED Operated at                                                                                (mA)    149     46.7    < 50% ------- less stress on LED, High Life.
 < 75%  ------- more stress on LED, moderate Life.
 < 100%------- Higher stress, Low life.
  LED max rated current                                                                     (mA)   180     180  
  % of Max rated used                                                                          (%)   82.78     25.93  
  Color Temperature                                                                            (Kelvin)   5888     6257    ~2700K - Warm White
 ~4000K - Neutral White 
 ~5000K - Cool white
 ~6000K - Day Light.
Thermal
  Solder point temperature raise @ 25°C ambient                        (°C)   34.9     11.6    LED Junction Temperature < 60°     - Excellent Life
 LED Junction Temperature <85°C    - Good Life
 LED Junction Temperature > 100°C - Poor life not recommended.
  Estimated Junction temperature raise @ 25°C ambient            (°C)   68.45     38.88  
  Estimated Junction temperature raise @ 35°C ambient            (°C)   78.45     48.88  
  Estimated Junction temperature raise @ 45°C ambient             (°C)   88.45     58.88  
Electrical
  Lamp power                                                                                          (Watts)   13.80     5.7    55% of Power Saved compared to S brand 15W.
  Electrical I/P power                                                                             (Watts)   15.54     7  
 Power Factor              0.97     0.93    > 0.9.
  VA     15.94     7.56  
  Ithd                                                                                                            (%)   20.83     26.22     Ithd < 30%.
  Vthd                                                                                                          (%)   3.85     4.29     Vthd < 10%.
  Efficiency                                                                                                  (% )   88.79     82.00     Minimum Efficiency > 80%.  
  Power supply PCB   Single side-FR4     Double side-  FR4    Life of normal capacitor - 1000 hours at 85°C
 High Life capacitor - 10000 hours at 105°C
 This factor causes lot of difference in life time of  the power driver.
  Capacitors      Single     Dual with Redundancy  
  Line filter circuit   No     Yes     Line filter protects the power supply from Power  Line Disturbances.
  Driver short circuit protection   Yes     Yes  
  Driver open circuit protection   Yes     Yes  
  Driver I/P surge protection  ?   Yes  
  IEC 61000-4-5  
 Sudden Surges due to Lightening or electrical
  disturbances will damage the driver so driver  should be immune towards  these surges.
  Driver transient protection   ?   Yes  
  IEC 61000-4-4 
 Electrical transients damage the electronic  components hence the design should ensure  proper immunity.
  Driver voltage dips and interruption protection   ?   Yes  
  IEC 61000-4-11 
 Electrical Line fluctuations will cause the driver to malfunction so  the driver should work well even in fluctuating power  conditions.  
  Temperature raise in power supply compartment                     (°C)   41     20    < 25°C - Good
 More the temperature raise more it degrades the
 life.
Mechanical
  Luminaire Cover   Plastic     UV Stabilised   Polycarbonate   sheet    UV Stabilised ---- retains whitishness hence better
 light output.
 Un Stabilised ---- turns yellowish/dirty white over period of  time  reducing light o/p.
  Housing type   Sheet Metal    ABS Plastic    Sheet Metal - Possibility of rusting and denting.
 ABS Plastic - No rust and dents more elegant.
  Ingress Protection   ?     IP30    IP Protected - no insect and dust entry more clean and more light.
 Non IP - Possibility of dust and insect entry making it dirty  and degrades light output .
Performance
  Case temperature raise above ambient (heat sink)                      (°C)   20.58     10.51    < 15°C - works well in Indian climatic conditions without  degradation in   light output.
  <30°C - moderate performance in Indian climatic conditions  with degradation in light output.
  >40°C - poor performance with higher degradation in light  output.
   24 X 7 Operation   ?     Yes  
  Operating Ambient temperature range                                         (°C)   ?     0 to 60  
  Warranty                                                                                              (years) 2   5  
  Life                                                                                                         (years)   10  
Optical Pattern
SSK-Vs-Effe-Lamps
 

Saturday, September 20, 2014

EFFE Vs BRANDED Street Lamps

 LED STREET LAMP BRANDS COMPARISONS

* Replacement of 4 feet Fluorescent Tube Light (FTL)
ParameterDescriptionEFFEMNC BrandedRemarks
Optical  No of LED's                                                                   8  10  LED at lower operating current than the maximum rating will give higher Efficacy and results in less stress on the LED which will give more life.
  LED operating current                                                           (mA)400  710  
  LED max rated current                                                          (mA)1000  1000  
  % of max current rating used in LED                                                  40  71  
 Fixture secondary opticsLens  None  Lens will spread the light along the length of the road on to the useful area avoiding light spill on to the unwanted areas outside the road.
  Lamp lumen output                                                               (Lumen)1100  1650  
 Color temperature                                                                  (Kelvin)6500  5600  
  Efficacy                                                                                     (lm/W)95.65  67.48  
Thermal Solder point temperature raise @ 25°C ambient              ( °C)11  24.53  Less LED junction temperature raise will give more reliability and less  lumen depreciation.
Junction temperature above 75°C will   cause more Light loss over the time and faster damage to LED's.
The lower the light loss over time, the higher the lamp's lumen maintenance.
 Estimated Junction temperature raise @ 25°C ambient  ( °C)42.96  70.83  
 Estimated Junction temperature raise @ 35°C ambient  ( °C)52.96  80.83  
 Estimated Junction temperature raise @ 45°C ambient  ( °C)62.96  90.83  
Electrical  Lamp power (DC)                                                                    (volts)9.16  20.66  54% of the energy saved as compared to branded unit
  Electrical I/P power (AC) (Lamp+Driver)                           (Watt)11.3  24.45  
  Power Factor                                                              0.95  0.97  
  Efficiency                                                                                  ( % )81.06  84.50  
  Power supply PCB gradeDouble side-FR4  Single side  Thermal raise within the driver will degrade the output rating as well as life. The lesser the raise the better is the life and performance.
The grade of the components used and the design concepts such as redundancy in the circuit will reduce the stress and increase the reliability of operation.
  Capacitors                                                Dual with    Redundancy  Single  
  Input Line filter circuit                                                     Yes  Yes  
  Driver short circuit protectionYes  Yes  
  Driver open circuit protectionYes  Yes  
  Driver I/P surge voltage protectionIEC 61000-4-5    
  Driver transient voltage protectionIEC 61000-4-4  ?   
  Driver voltage dips and interruption immunityIEC 61000-4-11   
  Temperature raise in power supply housing compartment    (°C)20  30  
Mechanical  Luminaire CoverToughened Glass  Polycarbonate Anti-abrasiveness of the Glass improves the Clarity and reduces the Optical transmission losses over the life.
  Housing typeAluminium Die casting  Aluminium Die casting  Good thermal conductor and has good corrosion resistance for longer life.
  Ingress ProtectionIP65  IP65  Gives robust operation over the most rough environmental conditions such as rain and dust storms.
  Case temperature raise above ambient (heat sink)      (°C)8  22  
Performance  24 X 7 OperationYes  ?   Specific proven design practices and material types only support 24X 7 reliable operation and not all designs are meant for 24X7 operation.
Effe has a number of products designed for 24X 7 operation .
 Operating Ambient temperature range                           (°C)0 to 60  0 to 50  
  Warranty                                                                              (years)5  As Declared  5 year warranty & 10 year life comes from the industrial grade materials , proven manufacturing technology , rugged design and thorough testing.
Not compromising on quantity and quality of material
  Life                                                                                         (years)10  ?  
Illumination Pattern
effe-vs-branded-street-light-pattern