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by: Accuenergy
Product Code: CTACR##
Availability: Next Day Special Order
The Accuenergy RIK 5A is the perfect solution for energy monitoring in space-constrained environments. The flexible coils can easily fit into tight spaces, such as crowded electrical panels or large busbars, where traditional CT solutions may be limited.
The primary current can be set on the integrator with primary ranges from 500A to 50,000A, and the 5A secondary is compatible with the vast majority of CT operated meters. This means that the RIK 5A can be used for billing applications where an MID approved meter is required, unlike traditional Rogowski coils which have a 0.333V output.
It’s highly accurate with ±1% full-scale error and while typically used on a 3-phase supply, each channel can be configured separately, allowing it to be used on single phase supplies with varying maximum loads.
The integrator is powered by a 24V DC power supply, (included with kit), and both elements are designed to be fitted on a DIN rail requiring just over 14 modules, (253mm).
Rogowski coils are an innovative electrical device used for measuring alternating current (AC). Unlike traditional current transformers (CTs) that rely on a magnetic core, Rogowski coils are air-cored (or non-magnetic cored) and operate on the principle of electromagnetic induction. This unique design offers several significant advantages for a wide range of current measurement applications.
A Rogowski coil consists of a helical coil of wire with the lead from one end returning through the centre of the helix to the other end, forming a loop. When an AC current passes through a conductor that is placed through the centre of this loop, it induces a voltage in the coil. This induced voltage is proportional to the rate of change of the current, not the current itself. To obtain a measurement of the actual current, the output voltage from the Rogowski coil must be electronically integrated. This integration is typically performed by a dedicated integrator unit, which then provides an output signal directly proportional to the measured current.
Wide Dynamic Range: Rogowski coils can accurately measure a very wide range of currents, from milliamps to thousands of kiloamps, without saturation. This makes them ideal for applications with highly fluctuating currents or where high peak currents need to be measured.
Excellent Linearity: Due to their air-cored design, Rogowski coils exhibit exceptional linearity across their entire measurement range, providing highly accurate readings without the non-linearities associated with magnetic core saturation.
No Magnetic Saturation: Unlike conventional current transformers, Rogowski coils do not have a magnetic core, meaning they are immune to magnetic saturation. This ensures accurate measurements even with large overcurrent’s or distorted waveforms.
Flexible and Lightweight: Most Rogowski coils are flexible and lightweight, allowing for easy installation around conductors of various shapes and sizes, even in confined spaces or on busbars that are already installed.
Safe Operation (No Open-Circuit Voltage Hazard): As they do not have a secondary winding that can be open-circuited under load (which can lead to dangerous high voltages in traditional CTs), Rogowski coils are inherently safer to operate. Low Insertion Impedance: They present a very low impedance to the circuit being measured, meaning they do not significantly affect the primary current or introduce losses.
High Bandwidth: Rogowski coils typically offer a wide frequency response, making them suitable for measuring complex waveforms, harmonics, and transient currents.
Rogowski coils are versatile and used in numerous applications, including:
| Measurement Range | 2.5A - 60000A | |||
| Available Primaries | 500A, 1,000A, 2,500A, 5,000A, 10,000A, 25,000, 50,000A (set on integrator) | |||
| Rated Output | 5A | |||
| Supply Voltage | 24V DC ±5% | |||
| Accuracy | ±1% | |||
| Operating Temperature | -20 to +55°C | |||
| Input/Output Wire Connection | 14 - 30 AWG | |||
| Response Time | ≤ 10ms | |||
| Part Code | CTACR16 | CTACR24 | CTACR36 | CTACR47 |
| Manufacturer’s Part Code | RIK-16-5A-2M | RIK-24-5A-2M | RIK-36-5A-2M | RIK-47-5A-2M |
| Coil Length | 400mm | 600mm | 900mm | 1200mm |
| Lead Length | 2m | 2m | 2m | 2m |
| Availability | Next Working Day | Special Order | Special Order | Special Order |
Rogowski coils are an innovative electrical device used for measuring alternating current (AC). Unlike traditional current transformers (CTs) that rely on a magnetic core, Rogowski coils are air-cored (or non-magnetic cored) and operate on the principle of electromagnetic induction. This unique design offers several significant advantages for a wide range of current measurement applications.
A Rogowski coil consists of a helical coil of wire with the lead from one end returning through the centre of the helix to the other end, forming a loop. When an AC current passes through a conductor that is placed through the centre of this loop, it induces a voltage in the coil. This induced voltage is proportional to the rate of change of the current, not the current itself. To obtain a measurement of the actual current, the output voltage from the Rogowski coil must be electronically integrated. This integration is typically performed by a dedicated integrator unit, which then provides an output signal directly proportional to the measured current.
Wide Dynamic Range: Rogowski coils can accurately measure a very wide range of currents, from milliamps to thousands of kiloamps, without saturation. This makes them ideal for applications with highly fluctuating currents or where high peak currents need to be measured.
Excellent Linearity: Due to their air-cored design, Rogowski coils exhibit exceptional linearity across their entire measurement range, providing highly accurate readings without the non-linearities associated with magnetic core saturation.
No Magnetic Saturation: Unlike conventional current transformers, Rogowski coils do not have a magnetic core, meaning they are immune to magnetic saturation. This ensures accurate measurements even with large overcurrent’s or distorted waveforms.
Flexible and Lightweight: Most Rogowski coils are flexible and lightweight, allowing for easy installation around conductors of various shapes and sizes, even in confined spaces or on busbars that are already installed.
Safe Operation (No Open-Circuit Voltage Hazard): As they do not have a secondary winding that can be open-circuited under load (which can lead to dangerous high voltages in traditional CTs), Rogowski coils are inherently safer to operate. Low Insertion Impedance: They present a very low impedance to the circuit being measured, meaning they do not significantly affect the primary current or introduce losses.
High Bandwidth: Rogowski coils typically offer a wide frequency response, making them suitable for measuring complex waveforms, harmonics, and transient currents.
Rogowski coils are versatile and used in numerous applications, including:
| Measurement Range | 2.5A - 60000A | |||
| Available Primaries | 500A, 1,000A, 2,500A, 5,000A, 10,000A, 25,000, 50,000A (set on integrator) | |||
| Rated Output | 5A | |||
| Supply Voltage | 24V DC ±5% | |||
| Accuracy | ±1% | |||
| Operating Temperature | -20 to +55°C | |||
| Input/Output Wire Connection | 14 - 30 AWG | |||
| Response Time | ≤ 10ms | |||
| Part Code | CTACR16 | CTACR24 | CTACR36 | CTACR47 |
| Manufacturer’s Part Code | RIK-16-5A-2M | RIK-24-5A-2M | RIK-36-5A-2M | RIK-47-5A-2M |
| Coil Length | 400mm | 600mm | 900mm | 1200mm |
| Lead Length | 2m | 2m | 2m | 2m |
| Availability | Next Working Day | Special Order | Special Order | Special Order |
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