What devices cause inrush current?
LED drivers, among others. All devices with capacitors or coils in the supply section.
- Has the application of circuit breakers affected the installation?
"
The cable length in the installation affects safe shut-down. As the response value increases, the cable length becomes shorter. (Section 41 NEN1010)
"
- What can you do to combat inrush current?
"
Regulating the inrush current prevents an inrush surge. You can do that with an LED Limiter (current-limiting resistor)
"
- Is fluorescent lighting also subject to inrush current?
"
Yes, due to the coils, a surge of about 5x Inom. occurs.
"
- What inrush current is an LED fixture subject to?
"
The inrush current surge is usually described in the technical documentation. In some cases, this can be as high as 100 x Inom.
"
- Can I replace fluorescent lighting 1-to-1 for LED lighting?
"
One light will not be a problem. But if there are many, there will be a huge inrush current. You can avoid this by fitting an LED Limiter.
"
- How many LED bulbs can go on 1 group?
"
Without measures, only a few fixtures can go on 1 group. If the fixtures are switched on at the same time, you can calculate how many there should be. Often the supplier specifies how many can be switched on at once.
"
- Can a motion sensor switch LED lights?
"
Here’s a closer look at what the maximum current of the switch should be. This is between 4 and 10 Amps. If larger current surges are regularly switched, the contacts will burn.
"
- Is it possible to put an LED Limiter in any circuit?
"
As long as the technical details are followed, it can be done.
"
- Is an LED Limiter only for new installations?
"
A LED Limiter also be retrofitted in old installations. If it is a pluggable installation it is actually very easy
"
- Is LED lighting mandatory?
"
Yes, the government has specified for buildings that, in terms of sustainability, LED lighting should be used.
"
- Where can I fit the LED Limiter?
"
Wherever multiple LED fixtures need to be switched simultaneously.
"
- Is the LED Limiter pluggable?
"
The LED Limiter features Wieland GST18i3® connectors with black coding.
"
- How high is the inrush current of an LED lamp?
"
The inrush current surge is usually described in the technical documentation. In some cases, this can be as high as 100 x Inom.
"
- How many LED fixtures can be connected to the LED Limiter?
"
The LED Limiter can be loaded up to 8A. So the total rated current of all fixtures connected to it may be 8A combined.
"
- How heavily can the LED Limiter be loaded?
"
The LED Limiter can be loaded up to 8A. So the total rated current of all fixtures connected to it may be 8A combined.
"
- Can you connect 2 LED Limiters to a group?
"
Yes, on a 16A group one may place 2 LED Limiters which can both be loaded to 8A.
"
- Can you connect multiple LED Limiters to a group?
"
Yes, multiple LED Limiters may be connected to a group. As long as the maximum current of the group is not exceeded.
"
- How high is the inrush current when using an LED Limiter?
"
The LED Limiter eliminates the inrush current surge of the LED fixtures connected to it. So there is no more inrush current surge (at power-on). The current remains at its nominal value.
"
- What is the part number of the LED Limiter?
- What is inrush current?
- What devices cause inrush current?
"
LED drivers, among others. All devices with capacitors or coils in the supply section.
"
- What causes inrush current?
"
Capacitors are included in LED driver circuits. When the voltage is switched on, the resistance is close to 0 ohms for a short time. This means the current is almost infinite. After a few milliseconds, this effect disappears.
"
- How does inrush current affect switches and relays?
"
The enormously high current surge can cause contacts to burn-in. After a longer time, a resistance develops across the contact which causes heat generation.
"
- How does inrush current affect screw-type fuses?
"
A fuse is a slow protection device but will melt through at a certain value. The higher the surge the faster the fuse melts.
"
- What impact does inrush current have on circuit breakers?
"
A circuit breaker will switch off at a certain current surge. The higher the surge the faster the breaker shuts down.
"
- What maximum inrush is permissible for switches?
"
Many switching elements are capable of switching 10A. This is stated in the technical description.
"
- What maximum inrush is permissible for fuses?
"
Depending on the type of fuse, a different surge is permissible. For detailed information, see the technical information of the fuse.
"
- What maximum inrush is permiss+C164ible for circuit breakers?
"
Depending on the type of circuit breaker, it will trip at a surge of B-5, C-10 or D-20 times that circuit breaker’s rated current.
"
- What circuit breakers can be used?
"
Normally, B-breakers are used. In exceptional cases C-breakers. In industrial applications, D-breakers are used. Please note that replacing a B circuit breaker with a C circuit breaker halves the maximum permissible length of the installation, as the minimum short-circuit current (10xIn) doubles.
"
