The SEL-SCT is designed for applications where it is difficult or uneconomical to open the primary conductor to install a solid-core-type CT. The separable-core design allows the SEL-SCT to be separated into a two-part assembly installed over bushings or cables, and reassembled, without interrupting the monitored connection. SEL-SCTs are held in place with cable ties. The submersible design provides reliable use in subsurface vaults where flooding can occur.
The SEL-SCT is encapsulated in flexible vinyl plastic with 600 V insulation level. The SEL-SCT base and body can be pulled apart, placed around a cable, and reconnected. Two included stainless steel worm gear clamps secure the body to the base of the current transformer and prevent water intrusion into the core.
Subsurface Vault Feeder Monitoring—Use the SEL-SCT together with an SEL relay and an SEL-3061 Cellular Router to wirelessly send feeder data to SCADA or a distribution management system (DMS) to monitor loads, detects overload conditions, and capture pre- and post-event data.
Load Current and Overcurrent Sensing—Apply SEL-SCTs to serve as an input for source transfer relays. Use SEL-SCTs to distinguish fault current from load current to prevent switching into a fault.
Wet Environment Submetering—Use SEL-SCTs to submeter equipment within wet environments, including water treatment plants, pulp and paper mills, and other environments subject to water and extreme humidity.
Submersible Separable-Core Current Transformers
Submersible, vinyl-dipped, and installed around existing cables
|Description||Current Ratio||Part Number||Type/Size||Drawing||IEC Metering Class||IEC Protection Class||IEEE Metering Class||At Burden (VA)||Order|
|Submersible CT with 4-inch wire leads||600:5||T1796||Rectangular 3.5"||View||1.0-FS10||5P-4||1.2-RF2||2.5||Order|
|Submersible CT with 20-foot cable||600:5||T1796EM||Rectangular 3.5"||View||1.0-FS10||5P-4||2.4 RF2||2.5||Order|
Accessories for Current Transformers
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.