Technical Documentation
KSR-V – Capacitor-Bank Protection Relay
Rev. 05
4
Important Information!
If the above sign appears besides a text passage in the manual the reader is strongly
advised to read the corresponding information, as it is very important for the device
usage! It can contain safety advice or other information for the correct handling of the
device.
If the information is disregarded, the device may be inoperable or even damaged!
1 Overview
The KSR-V Capacitor Protection relay has been designed to protect capacitors from damage due to over-
voltage. Especially the capacitors which are used in reactive power compensation systems have to be
supervised and, if the danger of capacitor damage is given, have to be shut down. This is the function a
KSR-V can perform in a very flexibly way.
The device provides a big liquid crystal display for easy reading of values and settings. The backlight
provides a good visibility even in poor light conditions. Four context-sensitive soft-keys provide easy, intuitive
usage without the need to read the manual along when using the device.
A basic set of standard values (voltages) is calculated from measured input data. These are then used to
calculate further values.
Nearly all calculated values are true RMS (TRMS) values, which means they are correct even if the
waveform is not a sine function.
A full range “Fast Fourier Transformation” is performed on the input data of all channels. This provides
information about the harmonic contents which distort the sine waveform of the voltages.
The modular concept of the device enables us to develop a wide range of extension modules without the
need for a re-design of the KSR-V main unit. Please ask for the actual available modules.
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