Multi-Ratio Current Transformers (Single-Core & Two-Core Options) for 25 kV max. Power Systems
CR-20S Series
Current transformers for installation in a switchgear panel of a 25kV (max.) power system and to be used with measuring or monitoring instruments, or protective relays. These are economic models suited to locations of high humidity or moderate pollution. The insulation material for the core and the secondary coil is Araldite® epoxy resin.
MV Window-Type Epoxy-Cast CT
About the Product
Designed to be installed in a switchgear panel of a 25 kV (max.) power system, these current transformers can be used in conjunction with measuring or monitoring instruments, or with protective relays. The insulation material for the core and the secondary coil is Araldite® epoxy resin. The window-type design facilitates installation and wiring with a busbar or insulated cables, decreasing the occurrence rate of contact point failure. With excellent insulation and a high degree of moisture resistance, the CR-20S Series current transformers can perform in locations of high humidity or moderate pollution. These lightweight and economic CTs are quick and easy to install.
Specifications
- Standards: IEC or IEEE*
- Indoor application; window-type design
- System Voltage: ≤ 25 kV
- Frequency: 50 or 60 Hz
- AC/BIL: 50/125 kV
- Single-ratio and multi-ratio types
- 2-core options available
- Ith = Max 43.3kA/1S
Selection Table*
* Other standards and specifications available.
Available Models
CR-20S-90A, CR-20S-130A
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CIC Company Profile
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【Product Brochure】Multi-Ratio Window-Type Current Transformers (CR-20S Series)
Easy-to-print document, containing product description, specifications, and a selection table.
【Product Dimensions】Multi-Ratio Window-Type Current Transformers (CR-20S Series)
Download PDF for basic drawing(s) and dimensions of this product. For more detailed information, please contact CIC.
CT & PT Selection Guide: How to Choose a Current Transformer or Potential Transformer
How to select, based on application and power system attributes, the primary and secondary currents, burden, accuracy, rated frequency, type (indoor vs. outdoor), insulation material, etc.
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Overvoltage Protector for Current-Transformer Protection
CCTP-03
When a power system is in operation, it is imperative that the secondary of the current transformer(s) should not have an open circuit. When an open circuit occurs, an extremely high transient voltage will be induced, which can in turn damage the current transformers and the instruments at the secondary, or even posing a threat to personal safety. This CT secondary overvoltage protector offers protection from such accidental damage caused by secondary transient voltage.