Overview

Technical Data of PR dry type curent transformer

• Standards: IEC or IEEE
• Frequency: 50 or 60 Hz
• AC/BIL: 4/10 kV
• Multi-ratio
• Type-tested

Specificationsof PR dry type curent transformer

 

Operating Principle of PR dry-type curent transformer

Dry-Type Current Transformers PR series, suited to power transmission and distribution systems, are intended to work with measuring or monitoring instruments, or with protective relays. These current transformers can also be used in gas-insulated switchgear (GIS) – the CT is placed in either SF₆ gas or in air. Alternatively, these current transformers can be used in conjunction with power transformer bushings; in this case, the CT is immersed in insulation oil. CT sizes can be specially requested, and the customer can choose between insulation tape or epoxy resin for the insulation material. The secondary side can be equipped with either lead wires or secondary terminals.

Outline and Dimensions  for PR dry type curent transformer

Manufacturers of protection devices typically specify the classification of protection current transformers (CTs) to ensure compatibility with particular protection devices. The classification indicates the transformer’s accuracy and performance. For instance, 5P classification means the CT will have a ratio error of 1% and a phase error not exceeding 60 minutes, while 10P classification indicates a ratio error of 3%, with no specified phase error. Among the most popular classifications are the 5P10 and 10P10. Other classifications, such as 5P20 or 10P20, are also available upon request. If you require a different classification or custom dimensions, please consult the factory for a quotation.

Technical FAQs for PR dry type curent transformer

• What is the primary application of the PR Dry-Type Current Transformer?
  The PR Dry-Type Current Transformer is primarily used in power transmission and distribution systems for accurate current measurement, energy metering, and protection. It is compatible with measuring instruments and protective relays.
• What makes the TB-1M Series Dry-Type Bushing Current Transformer unique?
  The TB-1M Series is specifically designed for use in gas-insulated switchgear (GIS) or power transformer bushings, where it is immersed in either SF6 gas or insulation oil. It provides excellent performance in both air and gas-insulated environments.
• What types of insulation materials can be used with the PR Dry-Type Current Transformer?
  Customers can choose between insulation materials such as insulation tape or epoxy resin, depending on the specific application requirements.
• Can the PR Dry-Type Current Transformer be customized?
  Yes, custom sizes and configurations are available. Customers can request transformers with specific current ratios or insulation materials to suit their operational needs.
• What accuracy classes are available for the PR Dry-Type Current Transformer?
  The PR Dry-Type transformers are available with a range of accuracy classes, including 5P and 10P classifications, to meet the specific measurement and protection requirements for different systems.

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