Siemens Launches New Compact Generator Circuit-Breaker

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Siemens Ltd., leading manufacturer of electrical equipment and solutions has launched a new compact generator circuit-breaker* the HB1-Compact (HB1-C). This would be an upgrade to the current Siemens generator circuit breaker HB1.

*Generator circuit breaker is used to synchronize the generator to the grid and to protect the generator in case of fault occurrence. It also prevents excessive stresses to the power equipment including generator over a long duration due to external short-circuit faults that may damage the generator.

Siemens HB1-C Generator Circuit Breaker to Use Vacuum Switching Technology

Siemens in its press release stated that the HB1-C generator circuit breaker uses vacuum switching technology which requires less maintenance. The HB1-C Circuit breaker will be available in L-shape and I-shape designs. This would help HB1-C to be mounted either vertically or horizontally and can be adjusted to match existing busbar connection points.

Further, the user according to their location and generator type can fit the generator circuit-breaker and its integrated main disconnector with earthing switches on the generator side and/or the transformer side for greater flexibility.

HB1-C generator circuit breaker with these customizable features is not only suitable for new applications, but also for retrofit scenarios in power plants where security of supply is essential and space is often limited.

HB1-C compact generator circuit-breaker certified for 10,000 Operating Cycles

Siemens HB1-C generator circuit breaker has up to 72 KA breaking capacity. It has a current rating of 6,700 A and is up to 24 KV rated nominal voltage. It comes with an integrated main disconnector and earthing switches. CIGRE has certified it for a lifespan of up to 10,000 operating cycles.

All the components and functions of HB1-C circuit breaker are type and routine tested together. The HB1-C also comes with a Siemens inherent interlocking system for reliability and safety of the generator.

About Siemens India Ltd.: Siemens India Ltd. is the publicly-listed Indian arm of Siemens AG. It was founded in India in 1922. At present, Siemens has 22 factories located across India, eight centres of competence and 11 R&D centres. Siemens India manufactures high-voltage switchgear, switchboards, remote monitoring systems (RMS), relays and Smart Grid systems, transformers and other equipment.