Do you know the most common causes of premature failure of LED lamps and LED luminaires?
What many people don’t know – but should absolutely know: Most LED lamps and LED luminaires do not fail prematurely because they are supposed to be of poor quality or poor quality. Rather, premature failure in most cases has to do with certain circumstances in the LED lighting environment.
There are various causes which can lead to damage to LED components, LED lamps or LED luminaires:
Possible cause 1 – Voltage peaks
Upstream devices which trigger via relays, such as impulse switches, motion detectors, timers, twilight switches, etc. can cause voltage peaks!
Explanation: By activating such or similar devices, a current impulse is given to the affected mains supply. This current pulse causes a voltage peak, which can lead to damage (often delayed) to LED components. Experience has shown that filament LED lamps of all makes are particularly sensitive to this type of overvoltage.
Possible cause 2 – Overvoltages
Overvoltages, which can be traced back to an increase in the basic mains voltage, can have several causes, e.g:
- the use of several LED lamps with a low power factor, which cause an “apparent power” in the form of induction voltage to act on the mains.
Explanation: The power factor (or electrical power factor) “…refers to the ratio of active power to apparent power under periodic conditions”.
(Quote: EU Regulation 1194/2012).
As a rule of thumb, the lower the power factor, the higher the apparent power!
- other inductive devices (e.g. fluorescent tubes, energy-saving lamps, etc.), which allow an induction voltage to act on the mains.
Explanation: Inductive devices return a reactive or induction power to the mains, which can lead to an increase in the mains voltage. These increased mains voltages can lead to damage to the electronics of LED light sources, LED lights and electronic switchgear in the respective circuit.
- Surrounding systems (e.g. solar systems, surrounding industry, transformer stations, cooling systems, passenger lifts, etc.)
RC quenching elements (capacitors 0.1µF with 100 Ohm resistor) discharge induction voltages and voltage peaks via the neutral conductor and thus clean up the network in the respective circuit. Our experience of recent years shows that the majority of all system-related failures of LED lamps can be avoided by using RC extinction elements!
We therefore advise you to use RC quenching elements as a preventive measure when installing LED lighting for the first time, in order to ensure that your LED lighting functions perfectly and permanently.
A guest contribution from the GreenLED team