Industrial Automation Magazine India

Generator circuit-breaker HEC 9 for 250-300 kA

Published on : Tuesday 30-11--0001

The world’s largest generator circuit-breaker (GCB)

HEC 9 has been developed as a system for large sized power plant such as nuclear, coal fired and hydro power plants. It has the world's highest performance with short-circuit currents up to 300 kA and it is also highly suitable for retrofits or replacements of old GCBs in air-blast technology.

Based on ABB’s well proven and highly reliable SF6 technology, it enables lower lifecycle costs and gives a time-to-overhaul period of up to 20 years.

It is delivered in single-phase systems to facilitate the transportation and installation with plug-in design to minimize the activities at site. Besides circuit-breaker, disconnector, capacitors and control cubicle, it also includes a wide selection of additional components such as earthing and starting switches, current and voltage transformers, and surge arresters.

Applications

• Load current up to 33,500 A

• Power units up to 2000 MW

• Indoor or outdoor installations

• Replacements or retrofits of old units

Why ABB?

• Naturally cooled up to 28,500 A

• Delivers the highest performance rates

• Provides the lowest lifecycle costs - maximum system availability and reliability

• Based on SF6, it is the only alternative to old and obsolete GCBs in air-blast technology

• Fully type tested according to IEEE C37.013, the worldwide GCB standard

 ABB India Limited