Didactum AC/DC current measuring transformer

Current Measurement via Hall Effect Current Transformer Directly in the Monitoring System

The Didactum current transformer transmits the current values measured by a Hall effect current transformer to a Didactum monitoring system. This analog plug-and-play converter is connected to any analog port (A1 to A8) of a Didactum monitoring system or expansion unit and works with Hall effect current transformers with a 0–5V output signal and 12V DC power supply.

This article describes both available variants of the current transformer together: the AC variant for AC measurements and the DC variant for DC measurements. Both variants are identical in design, connection, and functionality, but differ in the type of external Hall effect current transformer they work with. The choice between AC and DC is made directly during the ordering process via the variant selection on this product page.

Individually configurable: AC or DC

The Didactum current transformer is already tailored during the ordering process to match the type of Hall effect current transformer already in use or planned.

Select variant

Both variants are identical in connection, structure, and function; details can be found in the “Structure” section below.

Current transformer connections

The current transformer has only a few, clearly separated connections for input, output, and the external current transformer.

The 12V DC power supply for the external Hall effect current transformer is provided by the Didactum monitoring system via the analog port and passed through by the current transformer to the current transformer sensor. A separate power supply for the current transformer sensor is not required.

Matching Hall effect current transformer required

The Didactum current transformer cannot be operated on its own. It absolutely requires an external Hall effect current transformer with 0–5V output and 12V DC supply, which performs the actual current measurement on the line.

Alternatively, any other commercially available Hall effect current transformer with a suitable 0–5V output signal and 12V DC supply can also be used.

Install current transformer and sensor together

The current transformer sensor and Didactum current transformer are installed together.

Full control over thresholds, trends, and automation

The current transformer integrates seamlessly into the Didactum web interface and delivers precise measurement values as well as actionable insights.

• 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 measurement values
• Notifications via email, SMS, SNMP trap, and other channels

Areas of application for the current transformer

• Monitor circuits and outgoing feeders in electrical distribution boards to detect overloads
• Monitor power consumption of critical IT and facility equipment in the data center
• Measure generator load and detect over- or underload
• Monitor input and output current of UPS systems to assess backup performance
• Monitor motors, pumps, compressors, and production machines for load changes
• Record charging and discharging currents of battery banks and energy storage systems
• Check the power yield of solar inverters and other renewable energy systems
• Detect wear or defects early based on changed current consumption

What is included in the package

Please check the contents upon receipt for completeness and report any missing or damaged parts to your supplier immediately. The external Hall effect current transformer (AC or DC) is not included in this scope of delivery and must be ordered separately.

• Didactum current transformer (AC or DC, depending on the ordering option)1 piece
• RJ11 cable 6P4C, 2 m1 piece
• 3-pin terminal block, 2.54 mm1 piece
• 3-pin terminal block, 3.81 mm1 piece
• 3-wire connection cable, 2 m1 piece
• Screw B4.2 x 16 mm1 piece
• Self-adhesive label1 piece

Why this current transformer is the right choice

Frequently asked questions