SEL-CT
Split-Core Current Transformers
SEL-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 M6 silicon steel formed into a hexagonal or rectangular shape. This allows the core to be flexible enough to install over cable. SEL-CTs can be installed over bushings or over cables and are held in place with cable ties.
The SEL-CT is encapsulated in a flexible vinyl plastic with 600 V insulation level. The secondary terminals and hardware are nickel-plated brass. A single stainless-steel bolt secures the nickel mating surface of the split-core.
Starting At
$191In-Service Installation—Use SEL-CTs for electrical load surveys, industrial energy management systems, submetering for department costing, and in conjunction with demand, kilowatt-hour, or power factor meters; current or watt transducers; or current-sensing relays. The split-core design eliminates the need to open the primary cable during installation over existing bushings or cable for a lower installation cost and time compared to closed-core designs. Install SEL-CTs when secondary load is present. Flexible encapsulation provides 600 V class insulation and ensures a long product life. Four window diameters are available: 3.5", 4.5", 6.0", and 8.0".
Details
Split-Core Current Transformers
Flexible, vinyl-dipped, and installed around existing cables
| Current Ratio | Part Number | Type/Size (ID) | Drawing | IEC Metering Class | IEC Protection Class | IEEE Metering Class | At Burden (VA) | Order |
|---|---|---|---|---|---|---|---|---|
| 100:5 | QT-2044 | Rectangular 3.5" | View | 5-FS1 | N/A | N/A | 2.5 | Order |
| 600:5 | 5A600D35 | Rectangular 3.5" | View | 3-FS5 | 10P-5 | 2.4-RF2 | 1.0 | Order |
| 600:5 | 5A600D45 | Hexagonal 4.5" | View | 1.0-FS5 | 5P-5 | 1.2-RF2 | 5 | Order |
| 1,000:5 | 5A1000D45 | Hexagonal 4.5" | View | 1.-FS5 | 5P-5 | 1.2-RF2 | 5 | Order |
| 1,000:5 | 5A1000D60 | Hexagonal 6.0" | View | 1.0-FS5 | 5P-5 | 1.2-RF2 | 5 | Order |
| 2,000:5 | 5A2000D60 | Hexagonal 6.0" | View | 1.0-FS10 | 5P-5 | 1.2-RF2 | 7.5 | Order |
| 3,000:5 | 5A3000D45 | Hexagonal 4.5" | View | 0.5-FS10 | 5P-5 | 0.6-RF2 | 12.5 | Order |
| 3,000:5 | 5A3000D60 | Hexagonal 6.0" | View | 0.5-FS10 | 5P-5 | 1.2-RF2 | 15 | Order |
| 3,000:5 | 5A3000D80 | Hexagonal 8.0" | View | 0.5-FS15 | 5P-10 | 1.2-RF2 | 15 | Order |
Other Current Transformers
Submersible Separable-Core Current Transformers
Summing Current Transformer
Accessories for Current Transformers
| Description | Part Number | Length | Connector | Order |
|---|---|---|---|---|
| Self-shorting current connector,1 8-position male | 915900048 | 8 feet | 8-position male | Order |
| Self-shorting current connector,1 6-position male | 915900264 | 20 feet | 6-position male | Order |
1Connector is not submersible
Economically add CTs to existing equipment or cables without taking them out of service.
Size: 3.5"
Economically add CTs to existing equipment or cables without taking them out of service.
Size: 4.5"
Economically add CTs to existing equipment or cables without taking them out of service.
Size: 6"
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.