- Self-supplied alternating voltage transducer for measuring AC voltage signals
- Input for 100 V alternating voltage
- Output signal 0...5 mA
- No separate auxiliary supply required
- Compact 2-DIN-module design
- Suitable for control cabinet applications and industrial voltage measurement
 Datasheet
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- Alternating voltage transducer for measuring AC voltage signals
- Input for 100 V alternating voltage
- Multiple selectable current and voltage outputs
- Output signals 0...5 mA, 0...10 mA, 0...20 mA, 4...20 mA as well as 0...5 V, 0...10 V and 2...10 V
- Auxiliary supply 115 VAC
- Compact 2-DIN-module design for control cabinet applications
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Datasheet
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- TRUE RMS alternating voltage transducer for measuring AC voltage signals
- Input for 100 V alternating voltage
- Multiple selectable current and voltage outputs
- Output signals 0...5 mA, 0...10 mA, 0...20 mA, 4...20 mA as well as 0...5 V, 0...10 V and 2...10 V
- Auxiliary supply 115 VAC
- Response time ≤ 100 ms
- Compact 2-DIN-module design for control cabinet applications
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Datasheet
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- Programmable transducer for electrical power and network values
- Suitable for apparent power, reactive power, active power, power factor, phase angle, average power or frequency
- Can be used in single-phase and three-phase 3-/4-wire networks
- Suitable for balanced and unbalanced loads
- Current input 5 A, direct or from CT with programmable ratio
- Voltage input 80...500 V phase-phase, direct or from VT
- Various selectable current and voltage outputs
- Compact 8-DIN-module design
| Datasheet |
| User manual |
- Transducer for AC networks with 4 analog outputs
- Programmable through IDM software
- Suitable for single-phase and three-phase networks with 3- or 4-wire connection
- Can be used for balanced and unbalanced loads
- Current input 1 A, direct or from CT with programmable ratio
- Voltage input 80...690 V phase-phase, direct or from VT
- Wide-range auxiliary supply 80...265 VAC / 110...300 VDC
- Wall-mounting version
| Datasheet |
| User manual |
AC Voltage Measuring Transducers
An AC voltage measuring transducer measures sinusoidal AC voltage, computes its RMS value and converts it into a standardized DC output signal (e.g. 4 … 20 mA or 0 … 10 V). This allows AC voltages — for instance from mains or voltage transformers — to be safely and reliably converted into analog signals that can be processed by PLCs, control systems or monitoring equipment. Galvanic isolation between input and output ensures that potential differences, interference or ground loops are avoided.
These transducers are often implemented as compact DIN-rail modules simplifying installation in control cabinets. They are used for voltage monitoring, power network measurement and integration of AC voltage data into process or building automation. Modern devices feature flexible input ranges, stable RMS detection, short-circuit and no-load safe outputs, high accuracy and EMC-robustness.
Questions & Answers on AC Voltage Measuring Transducers
What is an AC voltage measuring transducer?
An AC voltage measuring transducer measures AC voltage, calculates its RMS value and outputs a proportional standardized analog signal.
When do you use an AC voltage transducer?
Whenever an AC voltage (e.g. mains voltage or a transformer output) needs to be monitored or converted into a standard analog signal for a PLC, controller or monitoring system.
What input voltage ranges are typical?
Depending on the model, nominal input ranges from a few tens of volts up to several hundred volts AC — e.g. up to 400 V or 500 V AC; for higher voltages, an external voltage transformer may be required.
What output signals are common?
Common outputs are 4 … 20 mA or 0 … 10 V; many devices allow switching between current and voltage output formats.
Is galvanic isolation standard?
Yes — input, output and supply are galvanically isolated to avoid interference, ground-loop currents or potential differences, ensuring safe signal transmission.
Do these transducers use true RMS measurement?
High-quality AC voltage transducers provide true RMS output, ensuring correct voltage representation even with non-ideal or distorted waveforms.
Is the output robust against short-circuit or no-load conditions?
Yes — outputs are typically designed to be short-circuit- and no-load-safe for reliable operation under varying load conditions.
How are they mounted and wired?
The device is mounted on a DIN rail. The AC input voltage is connected to the input terminals; the standardized output signal is taken from the output side and forwarded to control or monitoring systems.
Can such devices offer multiple output formats?
Yes — many units allow selection between current or voltage output; some also provide dual outputs simultaneously.
What applications suit AC voltage measuring transducers?
Voltage monitoring, energy or power monitoring, network supervision, integration of AC voltage measurements into automation or building management systems, facility monitoring and control systems.
How do frequency or waveform distortions affect the measurement?
As long as the AC voltage is within the specified frequency range and shape is not heavily distorted, RMS transducers deliver correct effective values; for strongly distorted waveforms, ensure a device with true RMS processing is used.
When is an external voltage transformer required?
If the measured voltage exceeds the device’s input range or for galvanic isolation and safety reasons — then a suitable external transformer must be used in front of the transducer.