Circuit & System Protection


Sine-wave filters for long motor cables

25 November 2009 Circuit & System Protection

Epcos has extended its range of EMC filters for frequency converters with new sine-wave filters designed to reduce the proportion of high clock frequencies at the output of converters. This allows interference-free operation of variable speed drives with long motor cables. Sine-wave filters of the B84143V*R227 series are designed for continuous currents of 4 to 320 A at rated voltages of between 520 and 690 V. The permissible clock frequency of the converters is between 1,8 and 16 kHz, depending on the type.

Motors are often connected to converters over distances of more than 100 metres. The parasitic capacitances of such long cables result in reactive power. Motor noises and increased eddy current losses are also produced. Epcos’ sine-wave filters significantly reduce these negative effects. Moreover, they can reduce filtering requirements at the input of the converters, so that less expensive types can be used there.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

ESD protection devices for high-speed automotive interfaces
28 April 2021, EBV Electrolink , Circuit & System Protection
Nexperia has announced a new range of ESD protection devices aimed specifically at protecting the ever-increasing number of high-speed interfaces found in automotive applications, especially the in-vehicle ...

Read more...
Rotary sensor with SSI output
28 April 2021, Electrocomp , Switches, Relays & Keypads
New from Bourns is the Model DMS22B non-contacting feedback rotary sensor that features Synchronous Serial Interface (SSI) output providing effective synchronisation in closed-loop control systems. This ...

Read more...
Temperature and humidity sensors for cold chains
26 May 2021, Electrocomp , Analogue, Mixed Signal, LSI
New calibrated and ISO 17025-certified temperature, and humidity and temperature sensors have been announced by Sensirion.These sensors enable customers to achieve cost-efficient GDP (good distribution ...

Read more...
Clearing the Static: Basic principles of static control
26 May 2021, Altico Static Control Solutions , Circuit & System Protection
ESD packaging solutions Many industries require particular conductivity specifications on their containers, component holders and pallets, which serve to prevent the destruction of electronic components ...

Read more...
Rotary sensor with SSI output
26 May 2021, Electrocomp , Switches, Relays & Keypads
New from Bourns is the Model DMS22B non-contacting feedback rotary sensor that features Synchronous Serial Interface (SSI) output providing effective synchronisation in closed-loop control systems. This ...

Read more...
ESD protection devices for high-speed automotive interfaces
26 May 2021, EBV Electrolink , Circuit & System Protection
Nexperia has announced a new range of ESD protection devices aimed specifically at protecting the ever-increasing number of high-speed interfaces found in automotive applications, especially the in-vehicle ...

Read more...
Current-compensated ring core chokes
26 May 2021, Electrocomp , Circuit & System Protection
TDK has released a new series of current-compensated EPCOS double-ring core chokes for the suppression of common-mode interference. They are available in three sizes with current handling capacities between ...

Read more...
Reference design for humidity and temperature sensors
26 May 2021, Electrocomp , Design Automation
The SHT4x Smart Gadget is a simple reference design circuit board which demonstrates the performance and ease of use of Sensirion’s SHT4x humidity and temperature sensors. It is equipped with a liquid ...

Read more...
Watertight glass reinforced polyester enclosures
28 April 2021, Electrocomp , Enclosures, Racks, Cabinets & Panel Products
Glass reinforced polyester (GRP) enclosures from Hammond Manufacturing are lightweight and corrosion resistant. They are also UV-resistant, enabling them to be installed inside and outside. The new ...

Read more...
Common-mode choke for automotive CAN-FD
28 April 2021, Electrocomp , Passive Components
TDK unveiled its new ACT1210D Series common-mode choke for automotive CAN-FD, which began mass production in April 2021. Automotive LANs (local area networks) are roughly categorised into four systems: ...

Read more...