HB3-C system without enclosure up to 110 kA
The compact design of the HB3-C generator circuit-breaker is customizable and offers an ideal solution for retrofit applications as it's maintenace and SF6-free.
About HB3-C system
- Bolt-on solutions with rated nominal current up to 15 kA
- Unique horizontal and vertical installation capabilities
- Common or individual supporting frame design
- With optional integrated line and earth disconnecting switches
- Common or individual supporting frame design
Product information
The most versatile solution for your retrofit application and new projects
With its HB3-Compact Siemens provides an unique generator circuit breaker solution to the most challenging constraints. It offers one of the highest level of customization: The HB3-C can be mounted either vertically or horizontally, its phase-to phase spacing and phase height axis can be adjusted to match perfectly the existing busbar connection points. Optionally, the circuit-breaker can be fitted with integrated line disconnecting switch and earth disconnecting switch on generator side and/or on transformer side.A compact design that meets all requirements:
- Common or individual supporting frame design
- Vertical or horizontal installation
- Maintenance free vacuum technology with up to 10,000 operating cycles at full nominal rated current
- Features full-spring operating mechanism stated to be the most reliable* way to operate a GCB with lifespan up to 20,000 operation
- Equipped with sealed-for-lifetime** vacuum interrupter
- Simplified footprint without dynamic forces during switching operations that facilitates designing and sizing of the GCB supporting structure
- Effortless on-site erection thanks to forklift-ready design or retractable wheels
- Can be delivered with integrated line disconnecting switch and earth disconnecting switch on generator side and / or transformer side
* Most reliable operating mechanism as per final report number A3-00 from the CIGRE 2012 General Report SC A3.
** R. Renz, D. Gentsch, P. Slade, H. Fink, M. Schlaug, "Vacuum Interrupters – Sealed for Life", 19th Int. Conf. on Electr. Distr. (CIRED), Paper 0156, 21-24 May 2007
