Automatic Power Restoration

Electrical control panel and switchgear components.

RESTORER EPRECSA-NOJA POWER

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Electrical transformer with high-voltage insulators.

RESTORER ARTECHE

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Diagram of electrical pole components and connections.

Optional accessories we offer with the electric recloser

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What is a Medium Voltage Electrical Restorer?

  • The electrical recloser is also known as a recloser, recloser, and recloser.
  • A medium-voltage restorer is a self-controlled protection and disconnection device capable of disconnecting and connecting partial sections of an electrical distribution network, especially in the presence of a transient short circuit.
  • The three-phase recloser is a device used in the electrical grid to interrupt fault currents through a sequence of closing and opening operations, with the objective of restoring electrical power in the shortest possible time.
  • When a transient short circuit occurs, the medium-voltage recloser disconnects and connects partial sections of the electrical distribution network to ensure that electrical power is restored as quickly as possible.

In short, an electrical restorer is an essential piece of equipment in medium- and high-voltage electrical installations, and its proper operation depends largely on the quality and efficiency of its components.

Electrical transformer on a utility pole.
Electrical switchgear with three insulator components.

How Does an Electrical Restorer Operate?

A recloser is a device used to quickly and automatically detect and isolate faults in an electrical network, such as transient short circuits, minimizing power outage time. Under this concept, reclosers operate as follows when a fault occurs:

  • The recloser detects the overcurrent
  • It interrupts the current, isolating the affected section of the circuit.
  • The recloser attempts to reconnect the section to restore power. If the fault persists, the recloser will disconnect the section from the circuit again.

In short, a power restorer operates automatically, detecting and isolating faults in an electrical network, attempting to reconnect the affected section, and minimizing the interruption time of electrical service.

What Are the Parts of an Electrical Recloser?

All medium-voltage electrical reclosers are composed of a set of control elements that allow overcurrent detection and control of the recloser's operation.

  • Main contacts
  • Insulating medium
  • Interruption medium
  • External insulation
  • TCs
  • Voltage sensors
  • Operating mechanism
  • Tank
  • Base support structure.
  • Restorer control

In addition, the components of an electrical recloser must meet certain specifications according to CFE regulations, such as a support base and accessories made of stainless steel, galvanized aluminum, or steel with an anti-corrosion coating, and be impact-resistant.

Electronic control panel with buttons and screen.
Electrical control panel with open door.

What Must a Restaurateur's Control Comply With?

Control is a key element of the restorer, as it is responsible for coordinating the interruption and reconnection of fault currents. It must be able to detect and respond quickly to a fault, minimizing the interruption time of electrical service.

  • According to the CFE (Federal Electric Power Commission), a recloser's control must have specific characteristics. According to CFE regulations, the control must be capable of detecting and coordinating the interruption and reconnection of fault currents.
  • It must be able to communicate with other devices located on the same circuit (such as circuit breakers, medium-voltage disconnectors, and other reclosers) since, if required, it must work properly with them and avoid potential coordination problems that could affect the reliability of the electrical system.
  • Furthermore, depending on the characteristics of the CFE-approved reclosers, the control must be capable of being programmed and monitored remotely and have a telemetry system that allows monitoring of the equipment's operation.
  • An electrical recloser must have instantaneous and time overcurrent protection, instantaneous and time neutral protection, automatic reclosing protection, and frequency protection.

What Types of Restaurateurs Are There?

One way to classify them is based on their configuration or mounting type. For example, they can be classified as

  • Post-type restorer
  • Substation type recloser
  • Pedestal type restorer

Another way to classify them is based on their phase configuration. For example:

  • Three-phase reclosers. These are the most common and are installed in distribution networks. We also often see them as medium-voltage connection reclosers.
  • Single-phase reclosers. They are used in areas with low loads, such as rural areas.
Electrical power lines with transformer and equipment.
Row of industrial electrical insulators in factory.

What Are the Advantages and Benefits of Using Restorers?

There are several advantages to using a power restorer to protect the medium-voltage load connected to a CFE service connection.

  • Electrical reclosers are self-monitoring devices that can interrupt temporary faults and prevent them from becoming permanent faults, reducing the time the power is out until the problem is resolved.
  • Installing overhead reclosers on medium-voltage feeders eliminates 80% of feeder failures and increases grid reliability more than any other smart grid solution.
  • In short, power restorers can improve power supply reliability and reduce power outage time during grid failures.

What Considerations Should Be Taken Into Account When Choosing a Restaurateur?

When choosing and installing a recloser, there are several features and specifications that an electrical installer must consider. These include, among others, the recloser's ability to operate correctly and coordinate with the rest of the protection and switching equipment on the electrical distribution network. Furthermore, the recloser's casing must be designed to prevent water accumulation and infiltration, and components such as nuts, bolts, washers, and clamps must be made of corrosion-resistant materials, such as stainless steel, galvanized steel, or copper.

It's also important to note that proper installation of the CFE recloser is critical to ensuring its operation and prolonging its lifespan. Therefore, an electrical installer must ensure that the recloser is installed correctly and in compliance with applicable standards and regulations.

Remember that this equipment must comply with the regulations of the Federal Electricity Commission, specifically CFE standard VH-00011 "RESTORERS."

Utility pole transformer against clear blue sky.
Electrical transformer on wooden utility pole.

New G&W Electric Solutions: Recloser for 69 kV Lines and Teros Recloser for 15 and 27 kV Lines

  • G&W Electrico Recloser: First recloser up to 72.5 kV. 3-in-1 high-voltage equipment: reclosing technology, current measurement, and voltage sensing. Quickly simplify fault isolation, network reconfiguration, and service restoration. Generate flexible solutions according to the current needs of electrical networks for your 69 kV high-voltage lines.
  • Meet G&W's new Teros recloser! The new medium-voltage recloser solution includes LAPEM test notification.
  • G&W Electric is an American company founded in 1905 that manufactures and sells electric power equipment, including electrical reclosers. Its Mexican subsidiary, G&W de México, assembles controls and manufactures SF6 and Trident solid dielectric reclosers and switches. G&W Electric has become a global leader in electric power equipment and focuses on providing customized solutions for its customers' needs.

Repair of Electrical Reclosers and Retrofits

  • If you need assistance with any brand of electrical recloser repair or retrofits that require replacing recloser controls, we're here to help! Our team of experts has the experience necessary to provide customized and effective solutions to meet your specific needs.
  • We know how important it is to keep your equipment running optimally to avoid interruptions in your power service, so we ensure we perform top-quality repairs and retrofits.
  • Additionally, we'll keep you informed at all times about the progress of repairs and work closely with you to minimize downtime. So, don't hesitate to contact us if you need help repairing electrical disconnect switches of any brand or if you need retrofits that require replacing recloser controls. We're here to help you keep your operations running at their best.
Electrical components in a workshop setting.

Electrical Recloser, Three-Phase Recloser CFE VH00011

Technical information on solid-insulated pole-mounted reclosers for 15, 27, 38, and 72 kV applications. All models we offer include a test notice as they are LAPEM certified according to CFE standard VH00011. This does not apply to 72 kV reclosers.

GWelectric Teros Recloser 15 and 27 kV (PDF)

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Arteche 15kV Restorer (PDF)

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Arteche 27kV Restorer (PDF)

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EPRECSA Reclosers for 15, 27 and 38 kV (PDF)

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G&W Electric 72 kV Recloser (PDF)

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G&W Viper-HV 72.5KV Electrical Recloser

Example of a high-voltage (72.5 kV) recloser installation for subtransmission lines. In Mexico, there are 69 kV CFE lines in both Jalisco and Baja California. For more information, contact us at ventas@iTepeyac.com.

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Installation of an Electrical Recloser With Monopolar Tripping

How to install a G&W Electric electrical recloser with the following operating options:

  • Monopolar tripping, tripolar reclosing
  • Tripolar tripping, tripolar reclosure

Presentation of the 69 KV Electrical Restorer

Learn more about G&W Electric's high-voltage recloser.

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New Product! Medium Voltage Electrical Recloser for 15

New product, certified by LAPEM for installation on CFE lines, recloser control with Ingeteam relay.