html{display:none} SEL-CT Split-Core Current Transformers | Schweitzer Engineering Laboratories

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 M-6 silicon steel formed into a hexagonal or rectangular shape. This allows the core to be opened to the nominal window diameter. 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 class insulation. The secondary terminals and hardware are nickel-plated brass.

Volume pricing is available.

Starting At

$141 USD

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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".

  • 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.
Primary Current600 to 3,000 A
Secondary Current5 A
Accuracy±3% at rated burden
Metering BurdenB-0.2 (ANSI C57.13)
Nominal Window Diameters3.5", 4.5", 6.0", and 8.0"
Core DesignFlexible split core
Core MaterialGrain-oriented silicon steel
Insulation Class600 V (can be used on higher voltage circuits when installed over insulated conductors)
Secondary Winding MaterialCopper
Electrical TerminalsNickel-plated brass threaded posts
MarkingsHot-stamped for polarity, catalog number, and ratio
Operating Temperature–40° to +85°C
Installation Temperature–10° to +85°C

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