Products Portfolio

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Pole mounted Vacuum Recloser

Efacec Switchgear is a leading company in Portugal and a worldwide reference in the development of solutions for power generation, transmission, distribution and use of electrical energy in the field of high and medium voltage.

Efacec Switchgear has teams experienced in the development of medium and high voltage equipment with the use of advanced 3D software modelling and simulation of equipment operating under extreme conditions.

It has implemented a strict quality system with emphasis on continuous improvement of equipment and manufacturing processes. To meet the highest standards of industrial production, Efacec Switchgear presents:

• Flexible manufacturing lines with integration of advanced technologies to increase efficiency and ensure high standards of quality

• Laboratory testing of internal development and type test

• Processes for planning, production and logistics to increase the stringent response capability

• Flexibility to adapt our product ranges to the most demanding and diverse needs of our customers

• Equipment certified by independent international laboratories

We are audited and certified by the most exacting quality standards and management: ISO 9001, ISO 14001, OHSAS 18001 and also certified according to the benchmark for Research, Development and Innovation NP 4457: 2007.

With a wide and complete portfolio of high and medium voltage products, Efacec Switchgear is recognized for its expertise in terms of flexible and custom-made solutions and products, and the ability to understand the customers’ needs and offer appropriate solutions for each project.

Efacec Switchgear

Spain

Argentina

India

Portugal

With a 20 years’ experience using vacuum technology, Efacec used the know-how for the development of three-phase REVAC circuit-breakers, where the breaking and switching environment is vacuum. This technology is particularly adjusted to functions of this type of reclosing equipment, enabling more switching manoeuvres, helping the device to be more stable and useful in power distribution networks.

The device is environmentally friendly with vacuum switching technology and SF6-free insulation creating added-value for the management of smart power grids.

The REVAC was designed to integrate an automated power distribution system. Reliability on distribution network is enhanced when integrating this equipment. Failures can be detected and isolated by the device and the network can be reconfigured from the control centre or based on distributed intelligence. This type of technology enables to increase the service quality and to reduce the cost associated to outages and line-crew dispatch.

The switchgear is equipped with magnetic actuator, current transformer, resistive voltage sensores, controller, devices for protection, communication and remote control.

Benefits

• Flexible

• Reliable

• Remotely controlled

• Long service life (10 000 mechanical operations)

• Ideal for adverse environmental conditions

• Compact equipment design

• Simple and flexible installation

• Adapted to any type of pole assemblies

• Few mechanical parts, minimal maintenance

• Prepared for smart automation of distribution networks

Overview

Function Block Diagram

Technical Data

Rated Voltage 12 kV 17.5 kV 27 kV 36 kV

Rated Current 630 A

Frequency 50 / 60 Hz

Short-time Short-circuit Current 12.5 kA (3s)

Impulse Insulation Level (1.2 / 50 µs) 75 kV 95 kV 125 kV 150 kV

Short-circuit Making Current 31.5 kAp

Breaking Capacity 12.5 kA

Auxiliary Voltage Supply 48 Vdc / 110 Vac / 220 Vac

Applicable Standards IEC 62271-111 / IEEE C37.60 / IEC 62271-1

Weight (kg) 145 160

Dimensions (mm)

Width 735 750

Height 784 850

Depth 885 885

Main Concept

The equipment is a three-phase device, each phase with a corresponding vacuum interrupter and epoxy resin housing. Each pole has it’s own magnetic actuator interconnected by a mechanical link that assures synchronized three phase operation. An external pull lever enables manual tripping of the device.

The signalling of state position is on the REVAC lid and it is visible by the operator from the ground.

Voltage is measure by six terminals of the device using resistive sensors, and the current is measured in all phases by toroidal transformers.

Designed for outdoor operation (pole-mounted) REVAC circuit breakers are insensitive to weather conditions, easily assembled with straightforward operation.

Construction Features Bushing

with Voltage Sensing

Over Voltage Protection Board

Current Sensor

Magnetic Actuator

The REVAC is equipped with a RCU 220E controller that targets protection and control of distribution assets together with conventional RTU-functionality. The RCU 220 provides not only reclosing function but also feeder isolation and restoration algorithms for loop/ring configurations. The automatic loop restoration control function has the advantage of not requiring communication capabilities to isolate faulty sections and restore power to unaffected segments.

The RCU 220 also provides open IEC 61131-3 programming and full IEC 61850 communication capabilities enabling fast and selective distributed peer-to-peer schemes, integration with centralized feeder control and monitoring systems, adaptive schemes for variable power flows or innovative plug-and-play/engineering approaches. Despite the added-value of advanced functionality and flexibility, RCU 220 is a cost-effective controller, carefully designed for integration with multiple recloser/interrupter vendors, easy installation and straightforward configuration and management.

The RCU 220 is designed for three-phase reclosers supporting either three-phase or single-phase tripping, adapting to different distribution feeder architectures. Includes breaker control with multiple reclose cycles, voltage check and optional synchronism check as a part of the available function set, in addition to sectionalizer / interrupter controller.

The RCU 220 supports several independent stages for main fault detection and protection functions, such as ANSI/IEC standard curves, traditional recloser curves, and editable time-current curves. Eight independent setting groups are available.

Controller

Recloser and Sectionalizer / Interrupter Control

Fault Detection and Protection Functions

The RCU 220 can be easily integrated in radial or loop network configurations and includes a flexible loop section isolation and feeder restoration function that implements a distributed self-healing algorithm (that can be further enhanced with peer-to-peer GOOSE messaging). The RCU 220 units are capable of automatically adapting the control algorithms to the new network topology through flexible settings.

The RCU 220 includes a general-purpose event and disturbance recorder; all records are stored in native COMTRADE format. The RCU 220 also includes a fault location function and extended fault reporting. The unit provides six voltage inputs and four current inputs, enabling continuous monitoring upstream and downstream of the recloser. Three-phase measurements and metering are some of the built-in monitoring functions. The RCU 220 also includes the fault location function and extended fault reports.

The RCU 220 was designed according to European and US international standards, and tested by independent laboratories. This product is also CE Marked according to the applicable European Directives. The RCU 220E cabinet, with protection level of IP55, includes all necessary components for recloser application, including batteries, inverters, battery system monitoring and management function, communication interfaces and I/O wiring. The full system was designed in line with EN 61439-1 (2009) and subject to the CE requirements.

The RCU 220 supports multiple communication options (Ethernet 10/100BASE-TX, RS232/RS485, GPRS modem, protocols: IEC 60870-5-101/104, DNP 3.0, IEC 61850 with GOOSE messaging, Modbus), enabling several application schemes. In order to secure the cyber security several proceedings are implemented, such as software and firmware protection, authentication and encrypted communication between IED and external access for selected protocols.

Feeder Automation

Recording, Measurement and Monitoring

Hardware

Communication Interfaces and Protocols

The RCU 220 offers a wide range of advanced and adaptive protection and control functions.

Protection and Control Functions

Functions *

Protection

(Directional) Phase / Earth-Fault Overcurrent

(Directional) Negative Sequence Overcurrent

Cold Load Pickup

Inrush Restraint

Editable Time-Current-Curves

Blocking Scheme Logic

Hot Line Mode

High Current Lockout

Switch-Onto-Fault

Thermal Overload

Undercurrent

Directional Earth-Fault Overcurrent for Non-Earthed Systems

Directional Power

Phase Undervoltage

Phase / Residual Overvoltage

Negative Sequence Overvoltage

Under/Overfrequency

Control and Supervision

Sectionalizer

Three-Phase / Single-Phase Trip Logic

Three-Phase / Single-Phase Automatic Reclosure

Automatic Loop Restoration Control

Voltage Check

Synchronism and Voltage Check

Broken Conductor Check

Open Pole Detection

Trip Circuit Supervision

Fuse Failure / VT Supervision

CT Supervision

Circuit Breaker Lockout

Circuit Breaker Control

Three-Phase / Single-Phase Circuit Breaker Supervision

Circuit Breaker Contact Wear Monitoring

Programmable Automation (IEC 61131-3)

* For more information consult the catalog of the RCU 220

Products Portfolio

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Main Office

Efacec Energia, Máquinas e Equipamentos Eléctricos, SABusiness Unit Switchgear

Apartado 1018, 4466-952 S. Mamede de Infesta Portugal

Phone: +351 229 562 300Fax: +351 229 485 428E-mail: efacecamt@efacec.com