GL 309 Live tank circuit breaker for 72.5 kV Brochure GB0 pages

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I CIRCUIT BREAKERS

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GL309

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Live tank circuit breaker for 72.5 kV

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Live tank circuit breakers for outdoor installation provided with third-generation self-blast interrupter

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chamber and FK3 spring-operated mechanism. The field-proven interrupter chamber operates on the basis

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of the energy-optimised self-blast principle.

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Product description

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1 Porcelain interrupter chamber

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2 Porcelain post insulator

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3 Base frame

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4 Spring-operated mechanism

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5 Supports

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Components

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■ Third-generation self-blast interrupter chamber

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■ Pressure relief system for passive protection of both substation and personnel

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■ Field-proven temperature-compensated density monitor with two-stage transducer and

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three-colour dial

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■ Easy access to the SF6 filling connection (type DILO)

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■ SF6 non-return (check) valve on each pole column

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■ Protected opening springs inside each pole column

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■ Hot-dip galvanised steel parts

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■ Mechanism housing completely made of aluminium

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■ Reliable spring-operated mechanism with position indicator clearly visible from outside

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Installation and maintenance

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■ Completely assembled (pole columns and base frame); no adjustments necessary during

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installation and commissioning

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■ Pole units pre-filled with SF6 at factory before shipping

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■ Separate disassembly of the interrupter chamber without having to remove the

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entire pole column

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Testing

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Live tank circuit breakers meet the requirements of national and international standards. This

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has been confirmed by comprehensive type tests according to the latest IEC and ANSI

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standards.

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Proven quality

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Our quality (ISO 9001:2000), environmental

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(ISO 14001) and occupational health and

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safety (OHSAS 18001) management

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systems determine the development and

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production procedures for our high voltage

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circuit breakers. These systems ensure the

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high quality standards of our products and

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services confirmed by regular audits.

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Customer Benefits

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• Temperatures down to -40°C with

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pure SF6 (no gas mixture)

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• Quick and easy installation and

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commissioning (pole columns and

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base frame completely assembled)

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• Long maintenance intervals

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GRID

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