All actual used power supplies, frequency converters (IGPT), lighting systems are switching in the KHz – range, thereby creating a partially destructive energy for other electronic devices and power plants.
So far there is presently no analyzer available to measure this interference in the lower frequency range (1KHz to 500KHz). Bajog electronic GmbH developed so far in 2013 the world's only hand-measuring device that can measure in that range 1 KHz to 500 KHz all interferers.
The development was promoted by the federal government (Ministry of Economy).
The previously applicable EMC standard Norm regulates the EN55011, the noise voltage level from 150 KHz to 30 MHz. In the area of 2KHz - 150KHz there is actual no norm. Bajog electronic works towards to launch a modified regulation for this frequency range and recommends with the Handheld Analyzer an max .limit of the noise voltage level.
How can the disturbers be easily identified inside house?
The best way is to switch on fuse by fuse to identify the individual noise path inside the house and follow them to the responsible noise generator (device, or system).!
Vacuum cleaner with and with out power filter
Household units produce their switching electronics and motors a significant noise level, which is inject to the power grid.
In this case, the vacuum cleaner generates 140-150dBμV. This corresponds to a voltage of 14Volt to 44 volts. Devices, such as directional solar inverters, frequency converters generate interference voltages of up to 170dBμV. This corresponds to a peak voltage value of 447Volt. It is therefore not surprising that the lifetime of devices and systems in this area are very short. In the video it is shown that an appropriate power line filter ("bi - directional") is preventing all spikes, transient and voltage noise levels towards the network, but it shows also that each connected device is protected against network disturbances, and thus guarantees the condition for the maximum lifetime of a device, system.
Energy saving lamps
Energy-saving lamps pulsing with their installed electronics and create thereby a significant noise voltage level, which is injected into the power grid.
This example shows only one lamp.
It is certainly conceivable the level of the total disturbances value in a power supply, if thousands of them are used in a building.
Fluorescent lamp is pulsed up to 200kHz
Fluorescent lights are often used up to several thousand times in a building. This video shows the interference potential of a Single lamp.
This video demonstrates the noise voltage potential, injected by only one "commercial" LED lamp into the supply network. This lighting technology is being used increasingly in the future.
It is also easy to imagine what amount of noise value and interferences will be injected finally into the power grid when millions of them are in action.
Inverters, frequency converters, solar inverters
Frequency converters, solar inverters are generating with their internal clock in the range from 2 to 150 KHz up to 170dBμV (noise level). This corresponds to a voltage peak of 447Volt. This video was recorded in spite of 20dB upstream attenuation but nevertheless an "overload" occurred.
Only a suitable mains filter prevents the massive influence of other devices and equipment located on the power grid of these peak values.
Smart Meter (PLC with out PLC-Filter)
different electrical and electronic equipment in the home can affect and prevent the function and data communications of smart meters .
These include primarily:
Frequency converter , solar inverter , dimmer, variable speed drives (VSD ), ( driving in the lift , ski lift drives , heating circulating pumps , ventilation equipment , household items ) , switching power supplies , power supplies (in lighting systems , personal computers , consumer electronics / home entertainment devices ( TV, DVD), ICT equipment, uninterruptible power supplies ( UPS ) , charging devices, lamps (fluorescent lamps, compact fluorescent lamps , LEDs) induction cookers, washing machines , electric shavers , portable mains-powered tools , AMR PLC , Electronic control (touch - controlled devices such as touch dimmer lamps ( TDL) , alarm systems , traffic control systems , traffic lights, in heating systems , street lighting , control for urinals , for doors in kitchen appliances (steam iron , coffee machines, ceramic hobs).
To avoid this negative effects , it is necessary to install a suitable " smart meters - filter " ( for 45 , 63 and 90 amps) between the smart meter and fuse box.
Without this special PLC - filter which suppresses the interferer coming out from the house and support the PLC - signal to the utilities, no trouble-free operation is guaranteed. The field trials have shown and confirmed many messages to this subject on the Internet. False billings and destruction of smart meters are possible. Even floor lamps and induction cooktops can be unintentionally switched on and off by smart meters .
Special "smart-meters"-filter (PLC) with filter
The special " smart - meters " - filter (for 45, 63 and 90 amps) is placed between the smart meter itself ( sovereignty of the energy supplier ) and the fuse box ( sovereignty of the owner ) .
This special filter suppresses all interference generated in the house and would influence the smart meter in a negative way.
At the same time smart meter - Filter support by a specific internal decoupling the communication between concentrator (DC transformer buildings, utilities) and the smart meters.
This ensures that there is no communication interruption between (utilities) and the House smart meters.
At the same time it is ensured that all in-house noise problems , how high they may be, do not the affected the measurement result of smart meters and in case of a solar feed-in
Will be also takes over and recorded properly.
If a "standard" -- Filter is placed instead of a special Smart Meter Filter, then this "standard" - filter is also affecting the PLC (Power Line Communication ) - signal between Smart Meter and Utilities by the general filter attenuation in the range of 30 -- 90 KHz. .
More Benefit is:
If a suitable smart meter filter is placed at the specified location in the house, then any filter can be used in the home to suppressed interfering devices and systems without the smart meter affection. This separation in frequency is very important !