Rogowski Coil Flexible Current Transformers – AcuCT Flex Series

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Rogowski Coil Flexible Current Transformers

AcuCT Flex Series

High specification line of flexible current transformers that measures AC current for power metering, power quality analysis and general use. The Rogowski coil provides a versatile solution when space is limited and requires a rope-style CT to physically wrap around a irregular shaped conductor or wire.

  • High accuracy for demanding applications
  • Wide frequency range means excellent choice for harmonics and power quality
  • Wide current input range from 5A – 50,000A AC
  • Choice of 16″, 24″, 36″ or 47″ length
  • No additional power supply needed when used with Acuvim II Series meters
  • Fully customizable selection of flexible CT

Rogowski Coil Overview

What is a Rogowski Coil?

A Rogowski coil is an instrument used to safely measure AC electrical current traveling through a primary conductor such as a cable or busbar in an electrical panel. Through a step-down process it can be used for metering or protection purposes. As electrical current flows through the conductor it induces a voltage in the coil in proportion to the conductor’s current and its frequency.

Choose a Coil Length

AcuCT Flex Series Rogowski coils are available in four standard lengths (circumferences): 16", 24", 36", and 47". The model number indicates the coil length. Custom lengths are also available; contact Accuenergy for more information.

Choose a Current Range

Suitable for nearly any application, four, standard current range options are available to choose from: 1000A, 2500A, 5000A, 10,000A, and 50,000A. If your project has a unique requirement, contact Accuenergy for custom current range options.

Choose a Lead Length

AcuCT Flex Series feature a standard 2 meter lead by default. They may also be ordered with 5m, 10m, or 15m leads to accommodate a variety of installation requirements.

Customize the Output Ratio

Easily customize the output ratio for any AcuCT Flex Series current transformer to match your unique project requirements. Contact Accuenergy for information on available options.

Rogowski Coil Models

RCT16
RCT24
RCT36
RCT47
Input Range 5A - 50000A
Output Option Multiple output options available for each length. View Table
Window Size 4.17" (106mm) 7.01" (178mm) 10.67" (271mm) 14.53" (369mm)
Length 15.75" (400mm) 23.62" (600mm) 35.43" (900mm) 47.24" (1200mm)
Accuracy 0.5%
Standard/Certifications UL Recognized UL Recognized UL Recognized UL Recognized
Form Factor Flexible Rope-Like CT
RCT16
Input Range 5A - 50000A
Output Option Multiple output options available for each length. View Table
Windows Size 4.17" (106mm)
Length 15.75" (400mm)
Accuracy 0.5%
Standrad/Certifications UL Recognized
Form Factor Flexible Rope-Like CT
RCT24
Input Range 5A - 50000A
Output Option Multiple output options available for each length. View Table
Windows Size 7.01" (178mm)
Length 23.62" (600mm)
Accuracy 0.5%
Standrad/Certifications UL Recognized
Form Factor Flexible Rope-Like CT
RCT36
Input Range 5A - 50000A
Output Option Multiple output options available for each length. View Table
Windows Size 10.67" (271mm)
Length 35.43" (900mm)
Accuracy 0.5%
Standrad/Certifications UL Recognized
Form Factor Flexible Rope-Like CT
RCT47
Input Range 5A - 50000A
Output Option Multiple output options available for each length. View Table
Windows Size 14.53" (369mm)
Length 47.24" (1200mm)
Accuracy 0.5%
Standrad/Certifications UL Recognized
Form Factor Flexible Rope-Like CT
Standard & Custom Output

Multiple options of output ratio such as 100mV/1000A, 40mV/1000A, 25mV/1000A, 10mV/1000A

Output/1000A @ 50Hz
Output/1000A @ 60Hz
RCTxx-200 500mV 600mV
RCTxx-500 200mV 240mV
RCTxx-1000 100mV 120mV
RCTxx-2500 40mV 48mV
RCTxx-5000 20mV 24mV
RCTxx-10000 10mV 12mV
RCTxx-50000 2mV 2.4mV
RCTxx-Custom Output any ratio of signal per your requirement. Contact Us
Output/1000A @ 50Hz
RCTxx-200 500mV
RCTxx-500 200mV
RCTxx-1000 100mV
RCTxx-2500 40mV
RCTxx-5000 20mV
RCTxx-10000 10mV
RCTxx-50000 2mV
RCTxx-Custom Output any ratio of signal per your requirement. Contact Us
Output/1000A @ 60Hz
RCTxx-200 600mV
RCTxx-500 240mV
RCTxx-1000 120mV
RCTxx-2500 48mV
RCTxx-5000 24mV
RCTxx-10000 12mV
RCTxx-50000 2.4mV
RCTxx-Custom Output any ratio of signal per your requirement. Contact Us
Directly Compatible with Accuenergy Power Meters

Compatible with Acuvim II, AcuRev 2000 and AcuRev 1310 series power meters. Flexible CT connects directly into the energy meter just like a standard solid-core and split-core CT.

Range Calibrated To
RCTxx-1000 5A - 1200A
RCTxx-2500 12.5A - 3000A
RCTxx-5000 25A - 6000A
RCTxx-10000 50A - 12000A
RCTxx-50000 250A - 50000A
RCTxx-Custom Output any ratio of signal per your requirement. Contact Us

Rogowski Coil Features

Rope style form factor

The flexible, rope-like design of the AcuCT Flex Series is designed to easily fit into tight panels or around large busbars where rigid-body current transformers simply won't fit. Contour the coil to fit around irregularly-shaped conductors for easy integration in challenging environments.

Non-invasive design

Much like a split core, simple latching connector on the AcuCT flexible current transformer allows for fast, efficient installation without disconnecting any electrical conductors. Plus, the coil and connector is designed to be easy to use, even while wearing gloves.

Wide current sensing

Regardless of size, all AcuCT flexible CTs offer the same, wide current sensing range to suit nearly any measurement objective. Unlike split core or solid core CTs that succumb to saturation beyond a certain amperage, the flexible Rogowski coil is capable of accurate, high-amperage measurements without saturating.

Wide Frequency Response Range

With an exceptional frequency response range, the AcuCT Flex current transformers are designed to quickly respond to changing current inputs, making them an ideal choice for any application with rapidly fluctuating amperages.

High Accuracy

The AcuCT Flex Rogowski coils are engineered for high accuracy current readings across the entire measurement range. Ideal for applications that require high-precision data, pair with a revenue-grade power meter to achieve maximum results in commercial, industrial, or specialized applications.

Linearity

When compared to other current transformer designs, flexible Rogowski coils provide an exceptionally linear output across their entire measurement range. Linearly following the input current results in superior accuracy no matter the installation environment.

Rogowski Coil Applications

1

AcuCT Flex Rogowski Coils

The AcuCT Flex Rogowski coils are available in multiple lengths and flexible, rope-like form factor is ideal for measurement around irregularly shaped conductors or in crowded electrical panels. With a wide measurement range, Rogowski coils are the superior choice for demanding applications.

2

Choose Installation Options

2

Accuenergy Rogowski Integrator Kits (RIK)

The Accuenergy Rogowski Integrator Kits (RIK) are designed to bridge the gap between AcuCT Flex Rogowski coils and devices without built-in integrator circuitry. Select from a number of industry-standard output signals and adapt to any installation with multiple, field-configurable ratio options.

2

Accuenergy Power & Energy Meters

Accuenergy’s high-performance power and energy meters are designed for plug-and-play compatibility with any AcuCT Flex Rogowski coil current transformer. With integrator circuitry built right into each instrument, directly connect Rogowski coils without any additional hardware or special wiring required.

2

Third-Party Devices with an Integrator

Some devices already contain integrator circuitry to support direct connection to AcuCT Flex Rogowski coils. Availability of multiple output ratios ensures compatibility with a wide range of devices. Check your device’s specifications to determine input requirements.

3

Third-Party Devices without an Integrator

Add the convenience of AcuCT Flex Rogowski coils to any third-party device without a built-in integrator. The Accuenergy Rogowski Integrator Kit connects devices such as such as a power meters, PLCs, RTUs, IEDs, or controllers to versatile Rogowski coils to overcome a range of installation challenges.

4

EMS Platforms, Gateways, or Servers

An effective energy management system, comprised of gateways, servers, and other hardware, relies on high-quality, reliable energy data provided by power meters and high-accuracy sensors, such as the AcuCT Flex Rogowski coils, for comprehensive energy management.

3

EMS Platforms, Gateways, or Servers

An effective energy management system, comprised of gateways, servers, and other hardware, relies on high-quality, reliable energy data provided by power meters and high-accuracy sensors, such as the AcuCT Flex Rogowski coils, for comprehensive energy management.

Rogowski Integrator Kit

If you are connecting to a non-Accuenergy meter, an integrator may be necessary to amplify the output signal from the AcuCT flex Rogowski coil. Integrators can amplify and transduce the standard output from the Rogowski coil to a commonly accepted signal, such as 333mV or 5A. The integrator can also compensate for the Rogowski coil's inherent 90 degree phase shift. The Accuenergy Rogowski Integrator Kit (RIK) provides an easy-to-use solution for 3rd party power meters or other equipment. Select the integrator below that matches your device's input requirement.

RIK 5A
RIK 333mV
RIK mA
RIK V
Output 0 - 5A 0 - 333mV 0 - 20mA, 4 - 20mA 0 - 5V, 0 - 10V
Current Sensing Range 2.5 to 60,000A 2.5 to 60,000A 2.5 to 60,000A 2.5 to 60,000A
Configurable Input Ratios Field-Configurable Choices: 500A, 1kA, 2.5kA. 5kA, 10kA, 25kA, 50kA
Three-Phase option
Single-Phase Option
RIK 5A
Output 0 - 5A
Current Sensing Range 2.5 to 60,000A
Configurable Input Ratios Field-Configurable Choices: 500A, 1kA, 2.5kA. 5kA, 10kA, 25kA, 50kA
Three-Phase option
Single-Phase Option
RIK 333mV
Output 0 – 333mV
Current Sensing Range 2.5 to 60,000A
Configurable Input Ratios Field-Configurable Choices: 500A, 1kA, 2.5kA. 5kA, 10kA, 25kA, 50kA
Three-Phase option
Single-Phase Option
RIK mA
Output 0 - 20mA, 4- 20mA
Current Sensing Range 2.5 to 60,000A
Configurable Input Ratios Field-Configurable Choices: 500A, 1kA, 2.5kA. 5kA, 10kA, 25kA, 50kA
Three-Phase option
Single-Phase Option
RIK V
Output 0 – 5V, 0 - 10V
Current Sensing Range 2.5 to 60,000A
Configurable Input Ratios Field-Configurable Choices: 500A, 1kA, 2.5kA. 5kA, 10kA, 25kA, 50kA
Three-Phase option
Single-Phase Option