229-LKH Closed-loop (magnetic balance) current sensor
229-LKH Closed-loop (magnetic balance) current sensor 229-LKH Closed-loop (magnetic balance) current sensor

229-LKH Closed-loop (magnetic balance) current sensor

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The sensor works on the principle of magnetically balanced Hall voltage detection. The magnetic flux generated by the primary current is in balance with the secondary voltage generated by the Hall voltage amplification, and the magnetic flux generated by the secondary coil is balanced, and the secondary voltage can accurately reflect the primary current.
Product Features

Measures AC, DC and pulsed signals

Excellent accuracy, good linearity

Strong resistance to external interference, high common mode rejection ratio

Low temperature drift, low power consumption, wide frequency band

Perforated structure, no insertion loss

Scope of Application

AC frequency conversion speed regulation

Servo motor traction

uninterruptible power supply(UpS)

Welding machine, battery power supply

Technical Parameter
Specification 10A/2V 20A/2V 50A/2V Unit
IPN Primary Rated Input Current 10 20 50 A
IP Primary Current Measurement Range 0~10 0~20 0~50 A
VSN Secondary rated output voltage 2.5±2 V
VC The Power Supply Voltage +5V(±5%) V
IC Current Consumption <20 mA
Vd Insulation Voltage Between primary and secondary circuits:2.5kV/50Hz/1min  
εL Linearity <0.1 %FS
X Precision TA=25℃:≤±0.5 %
V0 Offset Voltage TA=25℃:≤±15 mV
VOM Magnetic Offset Voltage Ip =0 after 3*IpN:≤±15 mV
VOT Offset voltage temperature drift Ip=0 TA=-40~+80℃:≤±0.1 mV/℃
Tr Response time  ≤1 μS
f Bandwidth(-1dB) DC~200 kHz
TA Working Temperature -40~+80
TS Storage Temperature -45~+85
Shape and Installation Dimensions
Circuit Link Diagram


IpN:Primary current input direction
+ :Positive 5V power supply
G :Power ground
M :Secondary signal output
Installation Precautions

The sensor should be wired correctly, otherwise it may damage the internal components of the sensor

When the sensor is soldered to the circuit board, it needs to be soldered with a low-temperature soldering iron, and the time should not be too long, and secondly, the pins should not be squeezed by a large amount, otherwise the internal connection may be opened.

We are a manufacturer has export qualification and experience.

instrument type at least 100pcs ;others by 1 -5 pcs;


Instrument transformer 20 thousand pcs ;current transformer 12 thousand pcs ;voltage transformer 11 thousand pcs.

We have a R&D team for new product design. Successful cases and in continued cooperation. Discussion among both sides ➡general specification ensure➡structure drawing ➡original sample ➡electrical

Standard Carton Export fumigatin-free tray Tray Film Edge fixing strip Vacuum packaging acceptable Customize size acceptable
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