Acrel BAK Series Split core AC Current Transducer

Acrel BAK Series Split core AC Current Transducer

● Split core type

● Aperture: 20mm, 50mm

● Input: BAK20–Current AC 0.5A, 50A, 200A, etc. AC0～(0.5～200A)

● BAK50–Current AC 60A, 300A, 600A, etc. AC0～(60～600A)

● Output:DC0/4～20mA，0～5/10V

● Power supply: DC 12V or 24V

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Technical Parameters

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Acrel BAK Series Split core AC Current Transducer

General

Acrel BAK Series Split-core products utilize the principle of electromagnetic induction to perform real-time measurement of AC current in power grids. Using constant current and linear compensation technology, they isolate and convert the measured current into a standard DC signal output. Operating on a safe voltage of DC12V or 24V, they can be widely used in industrial automation fields.

Function

Type Selection

Wiring

V+ —— Power Positive (Note: Do not reverse power positive and ground)

DO-、DO+ —— Digital Output (Switch) Interface

V- —— Power Ground

A、B —— RS485 Interface

OUT- —— Analog Output Negative

OUT+ —— Analog Output Positive

Cable is through-hole (pass-through) input

Indicator Definitions:

RUN: Normal operation. When 485 communication is not connected, the RUN indicator shows green, blinking once per second. When the current sensor successfully connects to 485 communication, the RUN indicator blinks rapidly.

Alarm: After the alarm function is enabled, when the input current reaches 120% of the sensor's range, the Alarm indicator lights red steadily and the relay output closes. When the input current drops below 110% of the sensor's range, the Alarm indicator turns off. If the alarm function is not enabled, the Alarm indicator remains off and the relay does not close.

Notes:

(1) The device uses removable terminal blocks. It is recommended to use shielded wires with a cross-sectional area of 0.75mm² for the power, output, RS485 communication, and digital output interface sides.

(2) Please refer to the wiring diagram on the physical housing for specific wiring connections.

Dimension

BAK20-AI Dimension

BAK50-AI Dimension

Application

Cement Building

BA series current transducer application - 2

Petrochemical Industry

BA series current transducer application - 3

Iron and Steel Metallurgy

BA series current transducer application - 4

Rail Traffic

BA Series AC Current Transducer FAQs

What is the different between current transducer and current transducer?

The transformer is a large current and a small current (1A or 5A) for measurement and protection circuits. The transducer converts the input current into a weak current communication signal (0-20mA or 0-5V) and transmits it to the subsequent circuit for processing.

How does a AC current transducer work?

Apply the principle of electromagnetic induction to measure the AC current in the power grid in real time, and convert it into a standard DC signal output.

What are voltage and current transducer?

Convert industrial high current and high voltage into analog signals that can be measured, which is safer and more accurate.

How to choose a right current transducer?

It depends your input current and output signal you need, including power supply and cable size.

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Acrel BAK Series Split core AC Current Transducer

Technical Parameters

Technical Parameter			Specification
Accuracy Class			Class 1
Input	Nom inal Valu e	BAK20-AI	Current AC 0.5A, 50A, 200A, etc. AC0～(0.5～200A)
		BAK50-AI	Current AC 60A, 300A, 600A, etc. AC0～(60～600A)
	Overload		Continuous 1.2x, Instantaneous current 10x/5 seconds
	Power Consumption		≤1VA
	Measurement Frequency		45Hz～65Hz
Output	Nominal Value		DC0/4～20mA ，0～5/10V
	Load Resistance		≤500Ω when current output, ≥10KΩ when voltage output
	Communication		RS485 interface / Modbus-RTU protocol
	Digital Output (DO)		1 relay output, Normally Open (NO) contacts Capacity 2A/30VDC or 2A/250VAC
Indicators			2 indicators: RUN (operational status), Alarm (DO status)
Response Time			≤400ms
Power Supply	Voltage		DC 12V or 24V
	Power Consumption		≤1W

Insulation Resistance		>100M Ω
Dielectric Strength		2.0kV/1min, 50Hz between Input/Output/Power Supply
Temperature Coefficient		≤400ppm/℃ when -10℃~55℃
Environment	Temperature	Operating: -10℃~+55℃ Storage: -25℃~+70℃
	Humidity	≤93%RH, non-condensing, non-corrosive gas environment
	Altitude	≤2000m
Weight		BAK20-AI approx. 242g	BAK50-AI approx. 468g
Mounting		TS35 rail, or fixed to cabinet with screws