Didactum probe AC current measuring transformer
€119.00
Precise Hall-Effect Current Transformer for AC Measurement
The Didactum AC current transformer is a simple, open-loop Hall-effect AC current transformer (open-loop ammeter) that measures current on a conductor contactlessly without disconnecting it. The conductor to be measured is passed through the opening of the ring-shaped transformer; the transformer converts the measured AC current into a proportional 0–5V DC output signal.
This article refers to model AC-100 with a rated current of 100A and a measuring range of 0–100 A — ideal for monitoring individual circuits, feeders, and medium loads.
Important note: Although the Didactum AC current transformer measures the current on the conductor, it cannot transmit the measuring signal to a monitoring system on its own. The Didactum current transformer in the AC version, item no. DI14030-AC is additionally required; as a transceiver, it receives the 0–5V signal from the current transformer and forwards it via an analog port (A1…A8) to the Didactum monitoring system. Without the DI14030-AC, no display, evaluation, or alarming of the measured values is possible.
Current Transformer Design
The current transformer consists of a ring-shaped transformer head with a pass-through opening and a 4-pin connection terminal.
Pass-through opening (Ø 21 mm)
The conductor to be measured is passed through this opening in the ring-shaped, toroidal transformer core. The transformer measures current contactlessly via the magnetic field that is generated.
Mounting tabs
Two fixing tabs on the housing, used to secure the transformer with screws and nuts.
4-pin connection terminal (3.81 mm pitch)
Four-pin terminal for wiring to the Didactum current transformer DI14030-AC. Pin assignment: G (Ground), M (0–5V measuring signal), G (Ground), + (+12V DC supply).
Mounting and Connection
The current transformer and the Didactum current transformer (DI14030-AC) are installed together.
Mount the transformer
Secure the current transformer in a suitable location using screws and nuts. Route the conductor to be measured through the transformer's pass-through opening.
Wiring to current transformer DI14030-AC
Connect the 4 wires of the terminal (G, M, G, +) to the 3-pin input terminal of the Didactum current transformer (DI14030-AC, AC version) according to the wiring diagram.
Connect to the monitoring system
Connect the Didactum current transformer (DI14030-AC) via RJ11 cable to a free analog port (A1…A8) of the Didactum monitoring system or an 8-port sensor expansion unit.
Safety instructions: Applicable regulations for installation in the respective country and the relevant accident prevention regulations must be observed, as well as internal operational, working, and safety rules. The specified technical limits, in particular insulation voltage, pass-through diameter, and ambient temperature range, must under no circumstances be exceeded. Before installation, check the maximum permissible conductor diameter as well as the maximum insulation voltage of the transformer.
Full Control of Thresholds, Trends, and Automation
Via the Didactum current transformer (DI14030-AC), the current transformer integrates seamlessly into the Didactum web interface.
- Individual thresholds (Lower Critical, Lower Warning, Normal, Upper Warning, Upper Critical) for each measuring point
- Logic schemes for automated actions when thresholds are exceeded, e.g. in case of overload
- Clear, individually configurable dashboard
- Graphical trend display and continuous logging of measured values
- Notifications via email, SMS, SNMP trap, and other channels
Current Transformer Use Cases
- Monitor circuits and feeders in electrical distribution boards to detect overloads.
- Monitor the power consumption of critical IT and facility equipment in the data center.
- Monitor motors, pumps, compressors, and production machines for load changes.
- Measure generator load and detect over- or underload.
- Monitor input and output current of UPS systems to assess backup performance.
- Check the power output of solar inverters and other renewable energy systems.
- Automated alarming when defined current limits are exceeded.
- Early detection of wear or defects based on changes in current draw.
What Is Included
Please check the scope of delivery for completeness upon receipt and report any missing or damaged parts to your supplier immediately. The Didactum current transformer DI14030-AC is not included in this scope of delivery and must be ordered separately.
- Didactum AC current transformer AC-100 (100A)1 pc
- Self-adhesive label1 pc
- Screw L18.5 M42 pcs
- Bolt L14 M42 pcs
- Nut M3.52 pcs
Why This Current Transformer Is the Right```xml
Precision Hall-Effect Current Transducer for AC Measurement
The Didactum AC current transducer is a simple, open-loop Hall-effect AC current transducer (open-loop ammeter) that measures the current on a line contactlessly without opening the circuit. The cable to be measured is passed through the opening of the ring-shaped transducer; the transducer converts the measured AC current into a proportional 0–5V DC output signal.
This article refers to the AC-100 model with a rated current of 100A and a measurement range of 0–100 A — ideal for monitoring individual circuits, feeders, and medium loads.
Important note: Although the Didactum AC current transducer measures the current on the line, it cannot transmit the measurement signal to a monitoring system by itself. The additionally required component is the Didactum current transducer in the AC version, part no. DI14030-AC, which acts as a transceiver, receives the 0–5V signal from the current transducer, and forwards it to the Didactum monitoring system via an analog port (A1…A8). Without the DI14030-AC, no display, analysis, or alarm notification of the measured values is possible.
Design of the Current Transducer
The current transducer consists of a ring-shaped transducer head with a passage opening and a 4-pin connection terminal.
Passage opening (Ø 21 mm)
The cable to be measured is routed through this opening in the ring-shaped toroidal transducer core. The transducer measures the current contactlessly via the magnetic field generated.
Mounting tabs
Two mounting tabs on the housing used to secure the transducer with screws and nuts.
4-pin connection terminal (3.81 mm pitch)
Four-pole terminal block for wiring to the Didactum current transducer DI14030-AC. Pin assignment: G (Ground), M (0–5V measurement signal), G (Ground), + (+12V DC supply).
Mounting and Connection
The current transducer and the Didactum current transducer (DI14030-AC) are installed together.
Mount the transducer
Secure the current transducer in a suitable location using screws and nuts. Route the cable to be measured through the transducer's passage opening.
Wiring to the DI14030-AC current transducer
Connect the 4 wires of the connection terminal (G, M, G, +) to the 3-pin input terminal of the Didactum current transducer (DI14030-AC, AC version) according to the wiring assignment.
Connect to the monitoring system
Connect the Didactum current transducer (DI14030-AC) via RJ11 cable to a free analog port (A1…A8) of the Didactum monitoring system or an 8-port sensor expansion unit.
Safety instructions: Comply with the applicable installation regulations in the respective country as well as the relevant accident prevention regulations, together with internal company work, operating, and safety rules. The specified technical limits, especially insulation voltage, passage diameter, and ambient temperature range, must under no circumstances be exceeded. Before installation, check the maximum permissible cable diameter and the maximum insulation voltage of the transducer.
Full Control of Thresholds, Trends, and Automation
Via the Didactum current transducer (DI14030-AC), the current transducer integrates seamlessly into the Didactum web interface.
- Individual thresholds (Lower Critical, Lower Warning, Normal, Upper Warning, Upper Critical) per measurement point
- Logic schemes for automated actions when limit values are exceeded, e.g. in case of overload
- Clear, individually configurable dashboard
- Graphical trend display and continuous logging of measured values
- Notifications via email, SMS, SNMP trap, and other channels
Use Cases for the Current Transducer
- Monitor circuits and feeders in electrical distribution panels to detect overloads
- Monitor the power consumption of critical IT and facility equipment in data centers
- Monitor motors, pumps, compressors, and production machines for load changes
- Measure generator load and detect overloading or underloading
- Monitor the input and output current of UPS systems to assess backup performance
- Check the output of solar inverters and other renewable energy systems
- Automatic alarm notification when defined current limits are exceeded
- Early detection of wear or faults based on changes in current draw
What Is Included in the Package
Please check the contents of the package upon receipt for completeness and report any missing or damaged parts to your supplier immediately. The Didactum current transducer DI14030-AC is not included in this scope of delivery and must be ordered separately.
- Didactum AC current transducer AC-100 (100A)1 piece
- Self-adhesive label1 piece
- Screw L18.5 M42 pieces
- Bolt L14 M42 pieces
- Nut M3.52 pieces
Why This Current Transducer Is the Right Choice
100A rated current
Measurement range 0–100 A for circuits and medium loads.
Contactless measurement
Current detection without opening the cable.
High accuracy
≤ ±1.0 % accuracy and linearity error.
Easy installation
Mounting via two tabs with screws and nuts.
Robust insulation
Insulation voltage AC 2.5 kV 50 Hz 1 min for safe operation.
Wide operating range
Designed for ambient temperatures from -10 °C to +70 °C.
Standardized output
0–5V DC signal, compatible with the Didactum current transducer DI14030-AC.
Made in the EU
Developed and manufactured in the European Union.
Frequently Asked Questions
Which current range is this model suitable for?
This model (AC-100) has a rated current of 100A and covers a measurement range of 0–100 A. Make sure the maximum expected operating current of the monitored cable stays safely within this range.
Can the current transducer be connected directly to the monitoring system?
No. The current transducer provides a 0–5V analog signal and requires the Didactum current transducer in the AC version (DI14030-AC) as a transceiver to pass this signal to an analog port of the monitoring system.
Is DI14030-AC included in the scope of delivery?
No. The Didactum current transducer DI14030-AC is a separate product and must be ordered additionally if it is not already available.
Does the cable need to be cut for installation?
No. The current transducer measures contactlessly via the magnetic field of the cable routed through the passage opening. Cutting the cable is not required for measurement.
Can multiple current transducers be used at the same time?
Yes. Each monitored circuit requires its own AC-100 current transducer with its own Didactum current transducer (DI14030-AC) on a free analog port. If the available ports are not sufficient, the number can be expanded using an 8-port extension unit.
Is the transducer also suitable for DC measurements?
No. The Didactum AC current transducer is designed exclusively for alternating current (AC). For DC measurements, a separate product is available that is combined with the DC version of the Didactum current transducer.
Questions about the Didactum AC current transducer?
Our support team in Germany will advise you free of charge on selection, installation, and configuration.
Didactum Sonde AC Current Transformer
General Data
- AC current measuring probe for measuring alternating current
- Single-phase current transformer with toroidal measuring core
- Contactless current measurement by passing the conductor through the core
- Analog voltage output 0–5 VDC
- Suitable for energy monitoring, load measurement, and building automation
Technical Data
- Measured variable: Alternating current (AC)
- Available rated currents:
- 50 A
- 100 A
- 200 A
- 300 A
- 400 A
- 500 A
- Measurement ranges:
- 0–50 A AC
- 0–100 A AC
- 0–200 A AC
- 0–300 A AC
- 0–400 A AC
- 0–500 A AC
- Output signal: 0–5 VDC
- Supply voltage: +12 VDC
- Accuracy: ≤ ±1.0%
- Linearity error: ≤ ±1.0%
- Response time: ≤ 350 ms
- Power consumption: ≤ 50 mA
- Bandwidth: 50 / 60 Hz
- Isolation voltage: AC 2.5 kV, 50 Hz, 1 minute
Connections
- 4-pin terminal block (3.81 mm pitch)
- Pin assignment:
- G – Ground
- M – Analog output 0–5 V
- G – Ground
- + – +12 VDC supply
Mechanical Data
- Pass-through opening: 21 mm
- Coil design: Toroid
- Coil type: Autotransformer
- Phases: Single-phase
- Weight: approx. 67 g
Environmental Conditions
- Operating temperature: -10 °C to +70 °C
- Storage temperature: -25 °C to +85 °C
Applications
- Energy and load monitoring
- Building automation
- Industrial installations
- Control cabinets
- Machine monitoring
- Energy management systems
Scope of Delivery
- Didactum Sonde AC current transformer depending on selection
Manufacturer information:
Didactum® Security GmbH
Im Mühlenfeld 4
48163 Münster
Deutschland
Fon:
(+49) 250 19 71 63 54 / (+49) 171 33 11 577
Email: info@didactum-security.de
