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Operating mechanism HMB

Operating mechanism for high voltage circuit-breakers from 52 to 1000 kV

Operating mechanisms  type HMB is the ideal partner for the complete portfolio of high-voltage circuit-breakers.

High degree of acceptance worldwide

  • More than 20 different manufacturers with more than 100 switchgear applications trust in HMB operating mechanisms for their high-voltage circuit breakers. Up to now, more than 105’000 units of HMB and its predecessor have been delivered.

HMB, if “time-to-market” is critical

  • Each of the operating mechanisms of the entire HMB family comes as a single unit, combining in a modular design all the functional components. The modules are combined as a function of the requirements and submitted to the most stringent quality and functional testing prior to their delivery. Owing to the well devised adaptation program, it takes only a few steps to provide the user with a type-tested solution for the circuit breaker and operating mechanism.

Applications

  • Live Tank Breakers (LTB)
  • Gas-Insulated Switchgear (GIS)
  • Dead Tank Breakers (DTB)
  • Hybrid systems
  • Operating mechanisms of type HMB are also used for breakers outside the high-voltage application: Generator Circuit-Breakers (GCB)

Why ABB?

  • 30 years of experience in design and manufacturing of operating mechanism
  • More than 105,000 mechanisms produced
  • More than 100 different product applications
  • Low life cycle costs due to minimum maintenance requirements and modular design
  • High energy mechanisms for compact switchgear designs
  • Easy and fast adaptation on new circuit breaker applications
  • Long term stability

 

HMB-1

HMB-2

HMB-4

HMB-8

HMB-16

Stored operating sequence

O-CO/O-CO-CO

O-CO/O-CO-CO

O-CO/CO-CO

O-CO/CO-CO

O-CO

Switching energy, last O [kJ]

0.8 / 1.7

2.3 / 2.7

3.7 / 5.3

8.1 / 11.8

19.6 / 21.7

Switching energy, last C [kJ]

0.4 / 0.8

1.0 / 1.2

2.0 / 3.0

3.0 / 4.8

5.1 / 7.4

Stroke [mm]

75 / 115

135

205 / 220 / 230

180 / 205

205 / 230

O = Opening of the circuit breaker; C = Closing of the circuit breaker
Specifications are subject to change without notice

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