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  3. Medium-voltage switchgear
  4. Siemens Medium-voltage – Power distribution

Generator switchgear HB1

generator switchgear
generator switchgear
generator switchgear
generator switchgear
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Electrical characteristics
metal-clad, compact, air-insulated
for generators, power distribution
Other characteristics
Primary current

6,700 A

Max.: 72,000 A

Min.: 0 A


12 kV, 17.5 kV, 24 kV


• Rated nominal current up to 6,700 A • Integrates protection system of the auxiliary transformer • High personal and operational safety due to Internal Arc classification up to IAC A FLR 72 kA 0.1 s • Suitable for all type of connection • Indoor and outdoor application Our HB1 brings your power generation continuity to its next level Siemens HB1 is a state-of-the-art generator switchgear designed to increase the selectivity of your power unit by integrating the protection system of the auxiliary transformer. It´s rated for application up to 6,700 A and short circuit ratings up to 72 kA. With its air-insulated, metal-enclosed and non-phase segregated design, this generator switchgear integrates vacuum generator circuit-breaker (tested as per IEC/IEEE 62271-37-013) and optionally line disconnecting switch, earth disconnecting switch on generator side and/ or transformer side, instrument transformers, surge arrester(s), start-up disconnecting switch, protection of auxiliary transformer and/ or excitation transformer feeder. Compact and comprehensive: • The integration of auxiliary and/or excitation transformer feeders make it the ideal solution for costs, space and interface savings. • Suitable for indoor and outdoor installation • Wide range of interfaces with surrounding equipment: bus ducts, cable, solid insulated busbars and IPB. • Connection from all direction • Arc fault-tested • High personal and operational safety due to Internal Arc Classification up to 1 sec. • Type tests performed on fully equipped switchgear • Maintenance-free


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Medium-voltage systems

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