• Product
  • Suppliers
  • Manufacturers
  • Solutions
  • Free tools
  • Knowledges
  • Experts
  • Communities
Search


Heat pipe in generator circuit breaker (GCB)

Edwiin
Field: Power switch
China

An important consideration for a generator circuit breaker is its current - carrying capacity. The rated currents of generators typically span from 3000 A (for 50 MVA units) to 50000 A (for 2000 MVA units). As these currents flow through the circuit breaker, heat is generated. To increase the rated current of a specific circuit breaker, it is essential to enhance the heat transfer to the surrounding environment, ensuring that the temperatures of all components remain within acceptable limits.
 
Consequently, the key challenge lies in effectively removing this heat from the conductor. Heat pipes are highly efficient heat - transfer devices. They consist of a hermetically sealed container filled with a small quantity of working fluid. In theory, a heat pipe can function across a wide temperature range, from the melting point to the critical temperature of the working fluid. Heat pipes operate by utilizing the evaporation of an appropriate working fluid, transferring the latent heat, and then condensing the vapor back to a liquid state.
 
Currently, ABB's generator circuit breakers (GCBs) with high - current ratings are leveraging this technology to manage heat dissipation more effectively.
Give a tip and encourage the author!
Recommended
Ensuring Reliability: A Deep Dive into Transformer Maintenance
IntroductionElectric transformers are the backbone of modern power distribution systems, silently enabling the reliable delivery of electricity to homes, businesses, and industries. As these critical assets age and the demand for uninterrupted power grows, the importance of diligent transformer maintenance has never been greater. This essay explores the essential role of transformer maintenance, highlighting the value of proactive care, the impact of advanced diagnostic technologies, and the tra
Vziman
09/03/2025
How does a transformer work?
Transformer Operation PrincipleA transformer is an electrical device that operates on the principle of electromagnetic induction to transfer electrical energy from one circuit to another. It enables the adjustment of voltage levels within an alternating current (AC) system, either stepping up (increasing) or stepping down (decreasing) voltage while maintaining the same frequency.Working Principle:Basic ComponentsA transformer consists of two coils, known as windings—the "primary winding" connect
Rockwell
09/03/2025
What is the difference between a dielectric and an insulator?
Dielectrics and insulators are distinguished primarily by their applications. One of the main differences is that a dielectric can store electrical energy by becoming polarized in an electric field, whereas an insulator resists the flow of electrons to prevent current conduction. Other key differences between them are outlined in the comparison chart below.Definition of DielectricA dielectric material is a type of insulator that contains few or no free electrons. When subjected to an electric fi
Edwiin
08/30/2025
What losses occur during operation of the transformer? How to reduce losses?
Transformers experience various types of losses during operation, primarily categorized into two main types: copper losses and iron losses.Copper LossesCopper losses, also known as I²R losses, are caused by the electrical resistance of the transformer windings—typically made of copper. As current flows through the windings, energy is dissipated in the form of heat. These losses are proportional to the square of the load current (I²R), meaning they increase significantly with high
Rockwell
08/29/2025
Related Products
  • HD11F series (Model G) Open knife switch with protective cover
  • HD11FG Electrical knife switch
  • Control module
  • Outdoor termination kit
Seed Inquiry
Download
Get the IEE Business Application
Use the IEE-Business app to find equipment, obtain solutions, connect with experts, and participate in industry collaboration anytime, anywhere—fully supporting the development of your power projects and business.