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Rogowski Coils (Flexible Rope CTs) with CTid

SKU: ERA-106-2775


Rope CTs are designed for 20-30 amps or greater load. Lower amperage results in lower accuracy readings.

Rope CTs (technically called Rogowski Coils) are large, flexible sensors for monitoring current like split-core CTs. Rope CTs are installed similar to standard split-core CTs, where a connector on the rope allows it to be opened and placed around a conductor without needing to thread the conductor through it. Rope CTs are excellent for bus-bars and large switch-gear applications that standard split-core CTs cannot fit around. Rope CTs are flexible and easy to install but require a minimum amperage of approximately 30A for accuracy.

The CTid Rope CT is the same as the standard Rope CT but has a different style connector, contains CTid for auto-detection, and has an onboard LED that can be used to identify which CT is connected to a given sensor port, which can be useful if the CT leads cannot be traced from the meter to the conductors being monitored.


  • 1x Rope CT with built-in 8 foot leads and 2-pin plug affixed

Tech Specs

  • CTid Enabled
  • Frequency Range: 50/60Hz
  • Operating Temperature: -20 °C to 70 °C
  • Overvoltage Category: 1000V CAT III, 600V CAT IV
  • Positional: Error Better than 4%
  • Linearity: Better than 1%
  • Material: Orange thermoplastic rubber; flame retardant UL 94 V-0 rated
  • Cable: 1000V UL style 20940; External diameter 5mm; Wires 2x 26AWG

  • 30A minimum current required at all times

  • Linearity: better than 1% from (from 1 to 100% of rated current)
  • Positioning error: better than 2.5%