IG-267-EN versión 01; 07/04/2017
5
General Instructions
ekor.rpa
General description
1. General description
Within the ekor.sys family, the ekor.rpa range of protection,
metering and control units groups together a series of
multifunctional devices. Depending on the model, the
equipment can incorporate voltage and current functions,
along with automation functions, local/remote control,
etc. All these functions are related to current and future
automation, control and protection requirements in
switching and transformer substations.
As a result of new demands in supply quality, there is an
increasing need for automation in distribution networks
and for equipment to carry out metering and control
supervision functions for the switch in distribution cubicles.
The ekor.rpa-100 protection, metering and control units
have been designed to meet these needs, in accordance
with national and international standard requirements and
recommendations that are applied to each part that makes
up the unit:
• EN 60255, EN 61000, EN 62271-200, EN 60068, EN 60044.
• IEC 60255, IEC 61000, IEC 62271-200, IEC 60068, IEC 60044,
IEC 61958.
Integrating the ekor.rpa units in the Ormazabal cubicle
system allows specific products for requirements in different
facilities.
The ekor.rpa-100 units in the ekor.rpa range have outputs
to, either locally or remotely, open and close the switch
in the cubicle where it is installed. Furthermore, the
equipment series has inputs which receive the status of the
cubicle switch.
The ekor.rpa-100 units also have the following benefits
compared to conventional systems:
1. The remote control unit (RTU or Remote Terminal Unit)
and protection are integrated in the cubicle in a compact
manner, simplifying the solution and minimising the
need to install control boxes on the cubicles.
2. Delivering the complete integrated solution (cubicle +
relay + sensors) reduces handling of interconnections
when installing the cubicle in the network connection.
The only connection necessary is the medium-voltage
cables (MV). The possibility of wiring and installation
errors is removed, thus minimising commissioning time.
3. Voltage and current sensors are installed in the cubicle
cable bushing. Metering of V, I, P, Q and energies are
obtained without the need for voltage transformers.
4. All the units are factory installed, adjusted and checked;
each piece of equipment (relay + control + sensors)
also undergoes a comprehensive check before being
installed. The final unit tests are carried out once the
unit is incorporated in the cubicle before delivery.
5. Current metering is carried out by current sensors
with a high transformation ratio, making it possible for
the same equipment to detect a wide range of power
levels. This is possible thanks to the high sensitivity and
low noise of the relay's analogue channels.
Figure 1.1. Protection, metering and control units: ekor.sys family
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