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KXT43U Three-phase Voltage Transmitter for Monitoring

A compact single-module three-phase voltage transmitter that centrally monitors A/B/C phase voltages, replacing multiple converters while simplifying wiring and saving cabinet space.
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Three-phase AC Voltage Conversion

One module captures A, B, and C phase voltage signals simultaneously.

Make three-phase power status more centralized and visible for industrial control.

The KXT43U captures A, B, and C phase voltages within a single, compact transmitter housing. Traditionally, monitoring a three-phase system required three separate single-phase voltage converters, which consumed valuable DIN rail space and complicated the wiring layout. By consolidating these functions, the KXT43U significantly reduces repeated wiring and helps maintain a highly organized cabinet environment.

KXT43U three-phase AC voltage conversion. One module captures A/B/C phase voltage signals to make three-phase power status more centralized and visible.

Compatible with 3-wire and 4-wire Systems

Flexible matching for common three-phase power architectures.

Reduce selection limits and streamline inventory for distribution cabinet projects.

The KXT43U is engineered for broad compatibility, supporting both three-phase three-wire (Delta) and three-phase four-wire (Wye) power systems. This versatility allows the transmitter to be specified for a wide variety of common distribution arrangements without the need to switch to a completely different product platform or manufacturer.

KXT43U compatible with 3-wire and 4-wire systems. Flexible matching for common three-phase power systems and reduced selection limits.

0–600VAC Direct Input Measurement

Directly converts up to 600VAC into standard output signals.

Built to simplify the measurement chain in three-phase AC projects.

Designed for typical industrial voltage levels, the KXT43U accepts direct three-phase AC voltage inputs ranging from 0 to 600VAC. It efficiently converts these primary voltages into standard analog output signals for downstream monitoring equipment. This direct-input capability significantly simplifies the measurement chain by eliminating the need for bulky and costly intermediate potential transformers (PTs) in standard low-voltage distribution applications.

KXT43U 0-600VAC direct input measurement. Converts 3-phase AC voltage into industry-standard output signals for power monitoring.

Working Principle Diagram

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Technical Specifications

Input Impedance per Phase:≥500 kΩ/phase, low load loss ≤0.1 VA/phase

Supports Three-Phase Input Specifications:3×AC100V / 3×AC220V / 3×AC380V / 3×AC500V, customizable range

Measurement Algorithm:True RMS sampling, compatible with distorted, non-sinusoidal grid waveforms

Compatible Signal Frequency:45–65 Hz power frequency; optional 20–5 kHz intermediate frequency customization

Maximum Output Load Resistance (4–20 mA Current Output):≤500 Ω per channel (independent output)

Minimum Output Load Impedance (0–5 V/0–10 V):≥10 kΩ per channel

Step Response Time (Output Reaches 90% of Steady State):≤250 ms

Temperature drift coefficient (full temperature range: -20°C to +80°C):≤100 ppm/°C FS

Independent linearity error:±0.1% FS

Overall accuracy of the unit at 25°C ambient temperature:Standard Class 0.5 ±0.5% FS; High-precision custom Class 0.2 ±0.2% FS

Supports reverse signal output (20–4 mA, 0–10 V):Supports custom reverse transmitter output

Standard transmitter output signal:4–20 mA, 0–20 mA, 0–5 V, 1–5 V, 0–10 V

Dimension Chart

L*W*H : 77mm x 50mm x 68mm

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Wiring Diagram

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