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Rogowski Coil Current Transformer

BR series

Rogowski Coil Flexible Current Transformer

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DESCRIPTION

Description

The BR Series Rogowski Coils are flexible, air-cored current transducers designed to measure AC currents. Unlike conventional CTs, they feature a toroidal, openable structure that can be easily wrapped around a conductor without interrupting the power supply. Key Specifications:Acrel BR Series Rogowski Coils are flexible, high-precision AC current sensors designed for easy installation in tight spaces. With 0.5-class accuracy, wide current range (1000A–10000A) and 100mV output, , and a standard output of 100mV for direct connection to the ADW300.They excel in industrial, renewable energy and high-current monitoring scenarios.

Installation: Easy Installation	Service: 24 Hour

Compliant: IEC-60332-1-2	Quality: Quality Assurance

Series Overview

Model Name	Primary Input [AC]	Secondary Output	Perforation Hole Size (mm)
BR-60	1000A	100mV	60
BR-90	1000~2000A	100mV	90
BR-150	2000~5000A	100mV	150
BR-200	4000~8000A	100mV	200
BR-300	5000~10000A	100mV	300

Size

Model Name	Inner Diameter	Sector Diameter	Circumference
BR-60	60mm	12mm	200mm
BR-90	90mm	12mm	300mm
BR-150	150mm	12mm	500mm
BR-200	200mm	12mm	650mm
BR-300	300mm	12mm	1000mm

Noted: The secondary signal output line is 2x0.2mm² cable with length of 2m ± 10cm.

Parameter

Module	BR-60	BR-90	BR-150	BR-200	BR-300
Circumferenc	200mm	300mm	500mm	650mm	1000mm
Inner Diameter	60mm	90mm	150mm	200mm	300mm
Rated Current	1000A	1000-2000A	1000-5000A	4000-8000A	5000-10000A
Sector Diameter	12mm
Output Cable Length	Default 2m,other size customizable
Ratio	100±0.5%mV/kA@50Hz Other Specs customizable…
Positional Error	±1%
OA Output[Zero Drift]	≤1mV
Phase Angle Error	≤0.5°
Linearity	±0.2%
Bandwidth	1Hz - 10kHz
Operating Temp	-40℃ - 80℃
Storage Temp	-50℃ - 90℃
Flame Retardant	Thermoplastic rubber for wires and cables IEC-60332-1-2 compliant
Shielding	100% for coil, 100% for signal cable
Insulation Voltage	Coil: 3000V; Signal cable: 300V

Installation

Noted: Before installing the Rogowski CT on monitoring circuits, first you need to wire the Rogowski CT with paired energy meter.

Noted: The clamping up installation direction of CT must be according to the actual forward current direction. [Normally consider the direction from source to loads as forward current direction]

Application

# - BR Series Rogowski Coils with ADW300 Wireless Energy Meter

In the era of smart energy monitoring and industrial automation, accurate and flexible current measurement is the cornerstone of reliable power management. Acrel's ADW300 multi-function energy meter, when paired with our BR Series Rogowski Coils, delivers a state-of-the-art solution that redefines the standards of current sensing. This powerful combination transcends the limitations of traditional current transformers (CTs), offering unparalleled flexibility, precision, and ease of installation for a wide range of applications.

The ADW300 is a versatile, DIN-rail mounted energy meter with integrated 4G/WIFI/LoraWAN communication, making it ideal for remote monitoring.

When paired with BR coils:

Seamless Integration: The ADW300 accepts the mV output directly, eliminating the need for external signal conditioning.

High Precision: Together, they achieve class 0.5 accuracy for energy metering.

Flexible Installation: The thin, flexible nature of the BR coils allows for installation in tight spaces, retrofitting into existing switchgear, and measuring large-diameter busbars.

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Interface Descriptions

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BR Series Rogowski Coil（100mV）.pdf

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Rogowski Coil Current Transformer

Product Summary:

Used for connection between pipe ends; Also useful is a flange on the inlet and outlet of the equipment, used for connecting between two devices, such as a gearbox flange. Flange connection or flange joint refers to a detachable connection consisting of flanges, gaskets, and bolts connected to each other as a combination sealing structure. Pipeline flange refers to the flange used for piping in pipeline devices, and when used on equipment, it refers to the inlet and outlet flanges of the equipment. There are holes on the flange, and bolts make the two flanges tightly connected. Seal the flanges with gaskets.

Classification：Butt welded pipe fittings

Keywords: Butt welded pipe parts

产品详细

There are GB series (national standard), JB series (mechanical department), HG series (chemical department), ASME B16.5 (American standard), BS4504 (British standard), DIN (German standard), JIS (Japanese standard).

Advantages:

The on-site installation is more convenient, and the process of welding seam rubbing can be omitted

Disadvantages:

The neck height of the flat welded flange with a neck is relatively low, which improves the stiffness and load-bearing capacity of the flange. Compared with butt welded flanges, the welding workload is large, the consumption of welding rods is high, and it cannot withstand high temperature and pressure, repeated bending, and temperature fluctuations.

The connection is not easily deformed, with good sealing effect, and is widely used. It is suitable for pipelines with significant temperature or pressure fluctuations, as well as pipelines with high, high, and low temperatures. It is also used for transporting expensive media, flammable and explosive media, and toxic gases