SABRE 24kV SF₆ Gas Insulated

Sabre ring main units are designed for secondary distribution networks up to 24kV. The range is an ideal solution for indoor/outdoor compact substations and is available in non-extensible, extensible and modular formats to suit various application requirements. All of the switching functions are insulated with SF₆ gas and sealed in a stainless-steel tank

The switchgear technology is designed by Lucy Electric, a world-renowned UK company with a reputation for robust and high-quality products. Our manufacturing principles and processes exceed internationally recognised standards to ensure that only highly reliable and resilient electrical equipment is connected to critical distribution networks.

Featuring the most advanced vacuum switching technology, the units are compact, flexible and easy to operate and install. The Sabre range is fully weatherproof for outdoor use, has a long service life and requires virtually no maintenance in the most extreme conditions.

The transformer protection is by a vacuum circuit breaker. On request, the units can be supplied with integrated automation for remote monitoring and control functions.

Cable boxes are located laterally or at the rear of the ring main unit. Factory mounted protection CTs are provided on the circuit breaker cable bushings for ease of installation and to avoid any potential damage to the CT during transit and connection. For additional operator safety, the cable boxes are earthed and can be interlocked to allow access to the operator only if the function is in the Earth ON position.

The structural tank welding is performed by a robotic welding process ensuring high reliability with a product life expectancy of more than 30 years. The housing is fully treated using zinc-coated steel and electrostatically applied oven-cured paint to resist degradation from pollution and harsh climatic conditions.

All of the switching functions are insulated with SF₆ gas and sealed in a stainless-steel tank with a leakage rate of less than 0.1% per year.

The operating mechanism of the ring switches and circuit breaker incorporates mechanical interlocks and padlocking facilities which make it impossible to simultaneously close the ring switch/circuit breaker and the earth switch. Anti-reflex mechanisms on ring switches ensure a time delay between switching operations.

Features:

Ratings: 630 Amp l Primary Voltage:  ≤24kV voltage l Frequency: 50/60Hz
Enclosure: IP54 l Operation Safety: interlocking & padlocking facilities l Control: local/remote (SCADA)

Standards:
IEC 62271-1 IEC 62271-100, IEC 62271-102, IEC 62271-103, IEC 62271-200, ENA TS 41-36

Product Specification

Automation

Sabre can be configured with a Lucy Gemini 3 RTU. A highly flexible, general-purpose Remote Terminal Unit designed to remotely monitor and control medium and high voltage switchgear. Sabre units coupled with a Gemini 3 offer full Automatic Transfer Scheme support. This provides the rapid and reliable transfer of the system from one power source to another, in the event of normal source failure. The result is an added layer of reliability in the power supply.

Accessories

Many factory fitted or retrofit options are available, contact PTC for details.

Trident 15.5kV Oil Insulated

Trident is a high-quality IEC Standard 15.5kV outdoor oil insulated ring main unit for rural and industrial environments. The Trident series of fused ring switches are rated 630 amps, they are designed to have an extremely long service life and require very low levels of service.