Transcript Philips PowerPoint template Guidelines for

Philips MASTER LED Knowledge Document Set
Ref.
Title
Dated
Applies to
KD01
‘Amoeba’ Explained
W2 2010
MR16 4W, 7W, 10W
KD02
Dimming Mains Voltage Lamps
W2 2010
All MV Dimmable
KD03
Dimming Low Voltage Lamps
W2 2010
MR16 4W, 7W, 10W
KD04
Enhanced Red Effect
W2 2010
GU10 PF, Novallure, and 250lm/470lm Bulb
KD05
Active Cooling
W1 2010
MR16 7W & 10W
Version One
LED Lamps & Systems, Sept 2010
Knowledge Document KD02: Dimming Mains Voltage Lamps
Dimmer selection and behaviour when used with Philips MASTER LED lamps
How Dimmers Work
Mains Voltage lamps operate on standard Alternating Current (AC) power supply, with the waveform below
left. Dimmers cause a reduction in light output by reducing the total power delivered to the lamps, by
‘trimming’ a section of waveform. Trimming is either done on the leading edge or the trailing edge of a
waveform, and dimmers are designated by these two types.
Leading Edge
Trailing Edge
They can also sometimes be classified by the type of load they are designed to dim:
Leading Edge
Dimmer
Load Type ‘R’
Lad Type ‘C’
Load Type ‘L’
Eg. Mains Voltage
Halogen or GLS Lamps
Low Voltage with
Electronic
Transformer
Low Voltage with
Magnetic
Transformer
R
X
RL
X
Trailing Edge
Dimmer
RC
X
X
Either Trailing or
Leading Edge
RLC
X
X
X
Increasing Cost $$$
Decreasing # of Installations
X
So all dimmer types are suited to R type loads, but specific dimmers are required for Low Voltage
applications.
Knowledge Doc Set v1, Philips LED Lamps & Systems
Knowledge Document KD02: Dimming Mains Voltage Lamps
Dimmer selection and behaviour when used with Philips MASTER LED lamps
Choosing the Right Dimmer
However, LED lamps are not a pure R type load, and the large variation in dimmer types and designs from
different manufacturers means not all dimmers can be used with LED lamps.
Philips is an industry leader on designing driver electronics that ensure best-in-class dimmer compatibility.
Currently, Philips LED lamps work best with R & RL type dimmers, while installation with RC & RLC type
dimmers is not recommended. Common phenomena when connecting LED lamps with the wrong type of
dimmer are:
•Flickering of the light in certain dimmer positions
•Audible noise emitted from the dimmer unit
•Light level is not dim enough even in lowest dimmer position
Philips knows the dimmer market and ensures there are available dimmer options in your country that offer
exceptional dimmer performance.
Knowledge Doc Set v1, Philips LED Lamps & Systems
Knowledge Document KD02: Dimming Mains Voltage Lamps
Dimmer selection and behaviour when used with Philips MASTER LED lamps
The complexity of LED lamp electronics mean that dimming behavior may not be ‘intuitive’ in some cases.
The following are known phenomena when using Philips LED lamps with certain dimmers.
Assymetrical Dimming Curves
The relationship between the dimmer knob position and the light output, during turning, may differ when
increasing the light level than when reducing the light level. This is due to the LED lamp requiring a certain
level of ‘activation power’ to switch on.
A desired dimming level may be more easily achieved when ‘dimming down’ than ‘dimming up’ from lowest
dimmer position.
Dimmest Light Achieved with Fewest Lamps
Depending on the dimmer type, the dimmer may offer the best minimum light level (when the dimmer is in
the lowest position) with only one or two lamps. Additional lamps on a single dimmer can cause the
minimum light level to increase.
Therefore, for applications where very dim light is required, such as ambience setting, it is better to have a
lower number of lamps in the system.
One Lamp
Five Lamps
Dimmer at Max
Max Light Level Same
Max Light Level Same
Good Dimming Level
Worse Dimming Level
Dimmer at Min
Knowledge Doc Set v1, Philips LED Lamps & Systems
Knowledge Document KD02: Dimming Mains Voltage Lamps
Dimmer selection and behaviour when used with Philips MASTER LED lamps
What About Specialist Dimmers?
Apart from the phase cutting (mainstream) dimmers, there are also few types of special dimmers
available in the market:
Sinus dimmers:
1-10 V dimming interface:
DALI:
DMX512 (+RDM):
Wireless remote controls:
Adjust the amplitude of the AC mains voltage, used in theatres
Analog means of driving a dimming input on an electronic driver
Digital communication for professional (office) lighting
High speed communication bus for dynamic (entertainment) lighting
Based on IR (infra-red) or RF (radio frequency), many protocols
(e.g. RC5, Zigbee, Z-wave, ...)
Our dimmable LED lamps are not compatible with all above special dimmers !!!
How Many Lamps per Dimmer? Mains Voltage Lamps
Despite the great energy saving offered by LED Lamps, dimmers cannot be overloaded with too many lowpower lamps at once. The Philips ‘Rule of Thumb’ is the ‘10% Rule’:
The LED Lamp loading limit is defined as the Max Dimmer Rating * 10%
For example, the limit for a MASTER LEDspot GU10 7W, used with a Niko 09-013 Dimmer is determined
as follows:
1 Lamp = 7W OK
2 Lamps = 14W OK
Dimmer Rating * 10% =
300W * 10% =
3 Lamps = 21W OK
30W
4 Lamps = 28W OK
5 Lamp = 35W NO
 4 Lamps Max
Knowledge Doc Set v1, Philips LED Lamps & Systems
Knowledge Document KD03: Dimming Low Voltage Lamps
Dimmer selection and behaviour for Philips MR16 7W & 10W (W2 2010 version)
How Many Lamps per Dimmer? Low Voltage Lamps (MR16, MR11)
Max loading for a Low Voltage LED lamp is different:
The Philips MASTER LEDspot MR16 should be considered by its Halogen Equivalent, when
determining how many lamps can be added to a system 
Then, the following mehod should be applied:
1.
2.
3.
Determine the max loading of both your transformer(s)
and your dimmer: either in Watts (W) or Volt-Amps
(VA).
Use the ratios below to determine a ‘System Max’ and EXAMPLE
‘Branch Max’
7W MasterLED MR16
Limit total lamps you can install by ‘System Max’...
(
(=
)
Dimmer Rating
Equivalent Halogen
200Wmax Dimmer
SYSTEM
Max
(
150VAmax Transformer
4.
200 / 35 = 5.7

5 lamps in system
SYSTEM
Max
150 / 35 = 4.3
)
Transformer Rating
Equivalent Halogen
BRANCH
Max
35W Halogen)

Transformer
Transformer
4
lamps per trafo
BRANCH
Max
…and ensure transformer load is sufficient to allow
for each individual ‘Branch’
Knowledge Doc Set v1, Philips LED Lamps & Systems
Branch Max not reached, but
additional MR16 would
exceed System Max
Knowledge Doc Set v1, Philips LED Lamps & Systems
7