CONVENTIONAL FLUID CURRENT TRANSFORMER
Resilience and reliability, even in extreme operating conditions
Resilience and reliability,
even in extreme operating conditions
CONVENTIONAL FLUID CURRENT TRANSFORMER
550 kV / 5000 A
Current Transformers utilizing conventional fluid insulation provide accurate and reliable current transformation, measurement, with the proven Trench design and highest reliability.
CHARACTERISTICS
- For Voltage levels up to 550 kV
- Rated primary current up to 5000 A
- Fully type-tested by international standards
GENERAL
- Conventional fluid-impregnated paper insulation has been improved based on many years of experience with the prestigious Haefely-Trench original design.
- The modular design allows the use of a reduced number of components.
- An optimized drying and oil-soaking process easily allows adaptation to specific Customer‘s needs.
Cores/windings are located at the top of the current transformer [head type]
The outer part is made of aluminum or another corrosion-resistant material, e.g., stainless steel
External insulation made of porcelain or composite insulator
The outer part is made of aluminum or another corrosion-resistant material, e.g., stainless steel
Bar-type primary conductor allows higher short-circuit currents and prevents a large voltage drop across the primary winding
MAIN FEATURES
Conventional fluid Current Transformers
ensure accurate and reliable current transformation
Design
Trench's conventional fluid CTs are based on a globally established insulating medium technology. The head design of the current transformers is characterized by low weight and minimal fluid volume.
Seismic
Excellent seismic performance as a consequence of the optimized design of flanges, insulator and, their interconnection.
High current
The bar-type primary conductor is designed for high service short-circuit current and prevents high voltage drops in the primary winding.
High Voltage insulation
Superior control of internal and external insulation stress, due to the use of a proprietary system of finely graded bushings.
Hermetically sealed
In all operating conditions, a stainless steel bellow allows the liquid volume to change and the internal pressure to remain the same as the ambient pressure.
Modular design
Modular design eliminates the need for a wide range of components.
Maintenance
Maintenance-free and therefore cost- and time-saving over a service life of more than 30 years.
PRODUCT APPLICATIONS
Inside the Trench
CONVENTIONAL FLUID CT
Main components of
the Conventional fluid Current transformer
The reliability and safety of Trench's conventional fluid Current Transformers is based on 100 years of innovation with oil-insulated units operating in a wide range of environmental conditions.
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