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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.

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$191

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In-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 RatioPart NumberType/Size (ID)DrawingIEC Metering ClassIEC Protection ClassIEEE Metering ClassAt Burden (VA)Order
100:5QT-2044Rectangular 3.5"View5-FS1N/AN/A2.5Order
600:55A600D35Rectangular 3.5"View3-FS510P-52.4-RF21.0Order
600:55A600D45Hexagonal 4.5"View1.0-FS55P-51.2-RF25Order
1,000:55A1000D45Hexagonal 4.5"View1.-FS55P-51.2-RF25Order
1,000:55A1000D60Hexagonal 6.0"View1.0-FS55P-51.2-RF25Order
2,000:55A2000D60Hexagonal 6.0"View1.0-FS105P-51.2-RF27.5Order
3,000:55A3000D45Hexagonal 4.5"View0.5-FS105P-50.6-RF212.5Order
3,000:55A3000D60Hexagonal 6.0"View0.5-FS105P-51.2-RF215Order
3,000:55A3000D80Hexagonal 8.0"View0.5-FS155P-101.2-RF215Order

Other Current Transformers
Submersible Separable-Core Current Transformers
Summing Current Transformer

Accessories for Current Transformers

DescriptionPart NumberLengthConnectorOrder
Self-shorting current connector,1 8-position male9159000488 feet8-position maleOrder
Self-shorting current connector,1 6-position male91590026420 feet6-position maleOrder

1Connector is not submersible

The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.