HB3 Generator Switchgear for 63 - 110 kA
Most durable solution for power plant
Save up to
of your operational expenditure by going maintenance- and SF6- free with vacuum technology.
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The HB3 reduces both your costs and your environmental footprintSiemens HB3 is world’s first and unique generator switchgear taking advantage from vacuum switching technology for application up to 12,700 A and short circuit ratings up to 110 kA. With its single-phase encapsulated design, the HB3 fulfills all requirements for its integration between the generator and the generator step-up transformer (GSUT) on the Insulated Phase Bus (IPB). Optionally, the switchgear can be equipped with line disconnecting switch, earth disconnecting switch on generator side and/ or transformer side, instrument transformers, surge arrester(s) and/ or a start-up disconnecting switch.
We designed the HB3, so you deliver your objectives:
- Maintenance free vacuum technology with up to 10,000 CO 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 CO operation
- Equipped with sealed-for-lifetime** vacuum interrupter
- Simplified footprint without dynamic forces during switching operations, it facilitates designing & sizing of GBS´s supporting structure
- Forklift-ready design will turn on-site erection effortless
- Protection index up to IP66
- Factory-assembled switchgear
- No CO2e emissions during operation, no-use of F-gas at maintenance or recycling
* 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