The WBI023TK03-40 current sensor is a closed loop device based on the measuring principle of the hall effect and null balance method ,with a galvanic isolation between primary and secondary circuit, the size of primary not affect test precision, no matter the location of primary in the hole of current sensor. It can really measure resolution 1000:1 and it uses for precision measurement of DC, AC and pulse current.
Electrical data(Ta=25℃±5℃)
Parameter/Type | WBI023TK03-40 | Unit |
Rated input Ipn) | 10-1000 | A |
Measure range(Ip) | 2000 | A |
Coil resister | @ 85℃;47 | Ω |
Measure resister | with±15V,@±1000Amax,0(min),20(max) | Ω |
with±15V,@±1200Amax,0(min),7.5(max) | Ω | |
with±24V,@±1000Amax,0(min),65(max) | Ω | |
with±24V,@±2000Amax,0(min),7.5(max) | Ω | |
Turns ratio(Np/Ns) | 1:5000 | T |
Rated output (Isn) | 2±0.1%FS(10A), 200±0.1%FS(1000A) | mA |
Supply voltage | ±15~± 24 | V |
Power consumption | ≤20+IpX(Np/Ns) | mA |
Zero offset | @Ip=0,≤±0.2 | mA |
Offset drift | @ -40℃~85℃,≤±0.5 | mA |
Response time | @100A/ μS,10%-90%,<1 | µs |
Linearity | @Ip=0- ±Ipn,≤0.05 | %FS |
Galvanic isolation | @ 50HZ, AC, 1min,6 | KV |
Di/dt accurately followed | >100 | A/µs |
Bandwidth | @ -3dB,DC…150 | KHz |
Applications
●AC variable speed drives and servo motor drives
●Static converters for DC motor drives
●Battery supplied applications
●Uninterruptible Power Supplies (UPS)
●Switched Mode Power Supplies (SMPS)
●Power supplies for welding applications.
Mechanical dimension(for reference only)

Remarks:
1. All dimensions are in mm.
2. General tolerance ±1mm.
Directions for use
1.Is will be in a forward direction when the Ip flows according to the direction of the arrowhead.
2.The primary conductor should be≤120℃.
3.The dynamic performance (di/dt and the response time) is the best when the primary hole is fully filledwith the bus bar.
Standards
●UL94-V0.
●EN60947-1:2004
●IEC60950-1:2001
●EN50178:1998
●SJ 20790-2000
General date
Value | Unit | Symbol | |
Operating temperature | -40~+85 | ºC | TA |
Storage temperature | -40~+125 | ºC | TS |
Mass (approx) | 570 | g | M |
Characteristics chart

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