CT — Split-Core Current Transformers
Sales and Ordering Information
Please contact Customer Service at
SEL Lake Zurich, Illinois at +1.847.362.8304
or by email at CSR@eosmfg.com
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Split-Core Current Transformers (CTs) are designed for applications where it is difficult or uneconomical to open the primary conductor to install a solid-core type current transformer. The split-core design uses M-6 silicon steel formed into a hexagonal or rectangular shape. This allows the core to be opened to the nominal window diameter. CTs may be installed over bushings or over cables, and are held in place with cable ties.
The CT is encapsulated in a flexible vinyl plastic with 600 V-class insulation. The secondary terminals and hardware are nickel-plated brass making the CT suitable for use in harsh environments.
Split-core design eliminates the need to open the primary cable during installation over existing bushings or cable, resulting in lower installation cost and time than closed-core designs.
Four window diameters are available: 3.5", 4.5", 6.0", and 8.0".
Flexible encapsulation provides 600 V-class insulation and ensures long product life.
Secondary terminals are protected with vinyl coating.
One-piece design simplifies installation and use.
Design allows for installation when secondary load is present.
Electrical load surveys.
Industrial energy management systems.
Submetering for department costing.
In conjunction with:
- Demand meters
- Kilowatt-hour meters
- Power factor meters
- Current transducers
- Watt transducers
- Current-sensing relays
| Primary Current |
600 to 3000 A |
| Secondary Current |
5 A |
| Accuracy |
±3% at rated burden |
| Metering Burden |
B-0.2 (ANSI C57.13) |
| Nominal Window Diameters |
3.5", 4.5", 6.0", and 8.0" |
| Core Design |
Flexible split core |
| Core Material |
Grain-oriented silicon steel |
| Insulation Class |
600 V (can be used on higher voltage circuits when installed over insulated conductors) |
| Secondary Winding Material |
Copper |
| Electrical Terminals |
Nickel-plated brass threaded posts |
| Markings |
Hot stamped for polarity, catalog number, and ratio |
| Operating Temperature |
—40° to +85°C |
| Installation Temperature |
—10° to +85°C |