Technical Documentation
KSR-Z – Capacitor-Bank Protection Relay
Rev. 04
Page
5
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36
Section 2: Protection Function and Other Features
2.1 Introduction
KSR-Z device accepts 4 current inputs and 3 voltage inputs.
A full range “Fast Fourier Transformation” is performed on the input data of all channels (3 Voltage
channels, 4 Current channels). Thus provides information about the harmonic contents which distort
the sine waveform of the current and voltage channels up to 51 order.
Current inputs are available with two options either 1A input or 5A input.
Current I
L1
I
L2
I
L3
inputs used to achieve overload protection, while I
UB
achieves unbalance protection.
Current measurements are derived from these inputs.
Voltage V
L1
V
L2
V
L3
inputs used to achieve over voltage and under voltage protection. Voltage
measurements are derived from these inputs.
