Rogowski Coil Flexible Current Transformers
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
| NAME | CATEGORY | |
|---|---|---|
| Product Datasheet | Download PDF | |
| Installation Guide | Download PDF |
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 | |||
| RCT GRIP Kit | RCT-GRIP-M | RCT-GRIP-L | RCT-GRIP-L | |
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% |
| Standard / 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% |
| Standard / Certifications | UL Recognized |
| Form Factor | Flexible Rope-Like CT |
| RCT GRIP Kit | RCT-GRIP-M |
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% |
| Standard / Certifications | UL Recognized |
| Form Factor | Flexible Rope-Like CT |
| RCT GRIP Kit | RCT-GRIP-L |
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% |
| Standard / Certifications | UL Recognized |
| Form Factor | Flexible Rope-Like CT |
| RCT GRIP Kit | RCT-GRIP-L |
Standard & Custom Output
Multiple options of output ratio such as 100mV/1000A, 40mV/1000A, 25mV/1000A, 10mV/1000A
Compatible with Acuvim II, Acuvim IIBN, Acuvim L, AcuRev 2100, and AcuRev 1310 series power meters, the flexible CT directly connects into the energy meter just like a standard split-core or solid-core CT.
Output/1000A @ 50Hz | Output/1000A @ 60Hz | Range Calibrated to* |
|---|
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 |
Range Calibrated to* |
|---|
| RCTxx-200 | 1A - 240A |
|---|---|
| RCTxx-500 | 2.5A - 600A |
| RCTxx-1000 | 5A - 1200A |
| RCTxx-2500 | 12.5A - 3000A |
| RCTxx-5000 | 25A - 6000A |
| RCTxx-10000 | 50A - 12000A |
| RCTxx-50000 | 250A - 60000A |
| RCTxx-Custom | Output any ratio of signal per your requirement. Contact Us |
*”xx” denotes length of current transformer coil
This table of current sensing range only applies when coil directly connect with Accuenergy meters. Otherwise the sensing range is 5A to 50,000A
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 50A to 50,000A 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 of 10Hz to 20kHz, 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, 0.5% 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
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.
Choose Installation Options
Accuenergy Rogowski Integrators
The Accuenergy Rogowski Integrators 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.
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.
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.
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.
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.
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 |
|---|
| 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 |
|---|
Rogowski Mount Installation Kit
The RCT GRIP Kit securely mounts the Rogowski coil in place, ensuring the conductor is optimally positioned within the coil window. By preventing shifts or misalignment, it enhances measurement accuracy and stability, making it ideal for revenue-grade metering. Designed for quick installation, the GRIP Kit minimizes mechanical strain on the coil, extending its lifespan.