HARTING Local Subsidiaries
Current measurement technique

Current sensors and current transformers for measurement: Precise. Reliable. Safe.

Current sensors are electromechanical components which deliver a precise, real-time representation of the input and output currents. The measuring signals are then used (e.g. in frequency converters) for precisely controlling the power semiconductors and for monitoring performance and functionality. The current sensors from HARTING are based on the so-called Hall effect.

Current transformers for measurement convert high currents in a conductor using a fixed ratio (e.g. 1 : 600) into electrical signals. They can thus provide reliable input variables for evaluation units. For example, you can monitor the deviating currents in the outgoing and returning conductors in frequency converters, or accurately measure the power consumption of decentralised energy plants.

HARTING Hall-effect current sensors

Current sensors

Whether for transportation or industrial applications: the ability to quickly and accurately detect current is required in order to precisely control power electronics systems such as frequency converters, traction converters, UPS systems or welding systems.

HARTING Hall-effect current sensors have been specifically designed to measure high currents in such environments. These sensors are available for rated currents from 200 to 2000 A, and with a measuring range of up to 4000 A.

Reliable even under extreme conditions

HARTING's current sensors are used in wind turbines, traction converters, welding and solar inverters, as well as in the drive controls for machines and cranes. They comply with a wide range of local requirements.

Easily integrated

HARTING's current sensors can be easily integrated into existing applications. They have standard installation dimensions. Versatile termination techniques and pre-assembled signal cables ensure that the installation is fast and safe. Users do not need to purchase the matching mating connector or the associated cables.

The right current sensor for your requirements

HARTING's current sensors use the magnetic field created by the current flowing through the conductor (the so-called Hall-effect measurement) to carry out an electrically isolated measurement. Depending on the accuracy required, there are two measuring principles which may be used:

Closed-loop current sensors (compensating current sensors) are available for demanding measurement tasks. Open-loop current sensors (direct-imaging current sensors) can be used for less demanding requirements.


Open-loop current sensorClosed-loop current sensor
  • Overall accuracy <± 1 % at 25 °C
  • Overall accuracy <± 0.5 % at 25 °C
  • Overall accuracy <± 5 % at -40 to +85 °C
  • Overall accuracy <± 1 % at -40 to +85 °C
  • Linearity < 0.5 %
  • Linearity < 0.1 %
  • Response time < 3 μs
  • Response time < 1 μs
  • Frequency range 0 to 25 kHz
  • Frequency range 0 to 100 kHz
  • Supply voltage ±15 V
  • Supply voltage ±15 V to 24 V
  • Output signal 4 V at IPN
  • Output signal 100 mA at IPN (typical)

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HARTING Current-Measurement

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Declaration of Conformity EN 45545

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Find the best current sensor for your requirements now!


HCM current sensors – the series for industrial applications

HCM current sensors – the series for industrial applications

HARTING, with its HCM series, offers special industrial current sensors. Their functionality is based on the compensation principle (closed-loop). They feature excellent measuring accuracy and short response times – so the HCM current sensors are ideally suited for precise control tasks (e.g. in frequency converters).

Your benefits at a glance:

Measures not only direct and alternating currents, but also mixed signals in frequencies ranging from 0 to 100 kHz
Available in various sizes, compact design, for a rated current range of 200 to 2000 A
Robust termination technique, including mating connectors, for safe connections even during operations
Suitable for use under severe conditions: for temperatures ranging from -40 °C to +85 °C
Compliance with the EN 50178 standard (Electronic equipment for power installations)
Certified according to UL508 and CSA C22.2 No. 14-13

Current sensors for industry


Stromsensoren HCMR – Serie für Bahnanwendungen

HCMR current sensors – the series for railway applications

The current sensors in the HCMR series are specifically designed to comply with the requirements of railway applications. Their functionality is based on the compensation principle (closed-loop). With their excellent measuring accuracy and short response times, the HCMR current sensors are ideally suited for precise control tasks (e.g. in traction converters). Their robust design and the high degree of protection against overvoltages help them to avoid faulty switching during operation.

Your benefits at a glance:

Robust design and high degree of protection: to prevent overvoltages and faulty switching during operation
Internal EMC shielding ensures excellent operational safety
The enclosure's material and potting mass are self-extinguishing (UL94-V0, EN 45545)
The right size for your application: only 3 types for a rated current range of 500 to 2000 A
Easy and safe connections are ensured by screw terminations with Faston connectors
Can also be used under critical conditions: with a wide temperature range from -40 °C to +85 °C
Complies with the EN 50155 standard (Electronic equipment used on railway vehicles)
Certified according to UL508 and CSA C22.2 No. 14-13

Current sensors for transportation

HARTING's current transformer for measurement

Current transformer for measurement

HARTING's residual current transformers meet the strictest demands for measurement quality and for preparing operational data.

HARTING has developed these products in close cooperation with it´s key power generation and power transmission customers so that they can use them in their environments.

In addition to high functional reliability, HARTING's current transformers also feature excellent mechanical stability. They are well suited for other industrial sectors such as transportation applications.



This product line includes residual current transformers for high-precision measurements of up to 7000 A. On request, HARTING can also have a state-approved testing centre calibrate the current transformers for measurement. Converters for measuring residual current complete our portfolio. These can be used for monitoring plants and facilities.

Find the best current transformer for measurement for your requirements!


Single-part residual current transformer for measuring current

Single-part residual current transformer for measuring current

HARTING's high-precision current transformers for measuring are primarily used for energy systems, especially in wind turbine and solar power facilities. The current transformers for measurement are often connected to display devices, such as electricity meters or voltage meters. On request, HARTING can also provide a state-approved testing centre calibrate the current transformers for measurement. This will help to emphasize the precision of your measuring and billing processes.

Your benefits at a glance:

Precise billing: providing very accurate measuring over the entire measuring range (e.g. Class E 0.2s FS10)
The robust design and the high degree of protection against surge currents and overvoltages also help to protect any downstream measuring devices
Simple and safe connections secured by screw terminations
Included in the delivery: primary rail mount and secondary clamp cover ensuring a simple installation process
Suitable for use in extreme conditions, thanks to its wide temperature range of -40 °C to 55 °C
Can be used around the world since they comply with the standard IEC 61869-2 (requirements for current transformers for measurement)

Single-part residual current transformer for measuring current in the eCatalogue


Residual current transformers – very robust and precise

Residual current transformers – very robust and precise

Residual current transformer detect fault (residual) currents at an early stage. They then generate output signals that can be used to take the necessary troubleshooting action before a protective mechanism is triggered that would stop the facility. HARTING residual current transformers are used to detect alternating currents up to 10 A; they are optimised for wind energy applications. The one-piece residual current transformer from HARTING detects residual currents in single-phase or multi-phase power supplies. This component measures the difference between the currents in the outgoing and return conductors for consumer loads. It is designed for a maximum cable diameter of 110 mm and can measure differential currents up to 10 A within a turns ratio of 1: 600. This ratio enables signals to be detected and output so that the electronic evaluation unit can process them. The possible frequencies range from 5 to 400 Hz.

Your benefits at a glance:

Versatile use because of compact design and wide opening for max. cable diameters up to 110 mm
10 A measuring range with a turns ratio of 1:600 – ideal for connecting to protective relays or post-processing electronics
Housing design is optimised to ensure high holding forces of up to 250 kg; degree of protection according to IEC 60529: IP65
Fast tool-free installation – with the proven HARAX® IDC termination technique
Also suitable for extreme environmental conditions: with a wide temperature range from -15 °C to 55 °C
Can be used around the world because they comply with the IEC 61869-2 standard (requirements for current transformers for measurement)

Residual current transformers in the eCatalogue


Downloads

TitleFile formatFile size

HARTING Current-Measurement

PDF

4.3 MBDownload

Declaration of Conformity EN 45545

PDF

335 KBDownload

HARTING eCatalogue - Product Information

Lookup product infomation here