IG-267-EN versión 01; 07/04/2017
6
General description
General Instructions
ekor
.rpa
1.1. General operating features
All the relays of the
ekor
.rpa-100 series include a
microprocessor for processing the metering sensor signals.
They process voltage and current meterings and eliminate
the influence of transient states, calculate the magnitudes
required to ensure current and voltage protection functions,
automation, etc. At the same time they calculate the
efficient values of the electrical meterings that report the
instantaneous value of these parameters of the installation.
Figure 1.2.
ekor
.rpa-100
series relay
The
ekor
.rpa-100 relays are equipped with a keypad for
local display, set-up and operation of the unit, as well as
communication ports to handle these functions from a PC,
either locally or remotely. The ergonomic keyboard menus
have been designed to make use as intuitive as possible.
Current metering is carried out via high transformation
ratio current sensors. These transformers or current sensors
maintain the accuracy class in all of their rated range.
Voltage metering is normally by capturing the voltage
signal using a capacitor divider built into the cubicle's
bushing. There is an option of installing
ekor
.evt-c external
capacitive voltage sensors for applications which require
high-voltage metering precision, such as applications with
MV network energy meters.
The different interfaces, local (
display
) or remote (
Web
), also
provide settings parameters, logs, events, etc., in addition
to instantaneous values for metering of currents, voltages,
powers and energies.
From a maintenance perspective, the
ekor
.rpa-100 units
have a series of features that reduce the time and the
possibility of errors in the test and service restoration tasks.
Among the main characteristics, the most prominent are
the large diameter toroidal-core current transformers
installed in the cubicle bushing, their built-in test bars
(for easier checking), and accessible terminal blocks for
current or voltage injection tests as well as for checking
the relay inputs and outputs. This configuration enables a
comprehensive testing of the unit.
Summary of Contents for ekor.rpa Series
Page 115: ......
