217-LKH Closed-loop (magnetic balance) current sensor
217-LKH Closed-loop (magnetic balance) current sensor 217-LKH Closed-loop (magnetic balance) current sensor

217-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 100A/4V 200A/4V 300A/4V Unit
IPN Primary Rated Input Current 100 200 300 A
IP Primary Current Measurement Range 0~200 0~400 0~450 A
VSN Secondary rated output voltage 4 V
VC The Power Supply Voltage ±12~15(±5%) V
IC Current Consumption <20 mA
Vd Insulation Voltage Between primary and secondary circuits:5kV/50Hz/1min  
εL Linearity <0.2 %FS
X Precision TA=25℃:≤±0.5 %
V0 Offset Voltage TA=25℃:≤±30 mV
VOM Magnetic Offset Voltage Ip=0 after 3*IpN:≤±20 mV
VOT Offset voltage temperature drift Ip=0 TA=-40~+80℃:±0.5 mV/℃
Tr Response time ≤3 μS
f Bandwidth(-3dB) DC~100 kHz
TA Working Temperature -40~+80
TS Storage Temperature -45~+85
Shape and Installation Dimensions
Circuit Link Diagram
IpN:Primary current input direction
1 :Positive 12/15V power supply
2 :Negative 12/15V power supply
3 :Secondary signal output
4 :Ground terminal
OFS:Zero adjustment
GIN:Amplitude adjustment
Installation Precautions

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

Dynamic performance (DI/DT and response time) is best when the input current row is fully filled with the primary perforation

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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