Overview
As medium-voltage (MV) grids continue to evolve—driven by the rise of Smart Grids, increased focus on power quality (PQ), and the integration of renewable energy—there is a growing demand for reliable and efficient voltage and current measurement in both new and retrofit applications. In response to this, the IEC committee has initiated standards specifically targeting MV sensor technologies, including IEC 60044-7, IEC 60044-8, IEC 61869-10, and IEC 61869-11.
Elseta’s range of sensor adapters is designed to seamlessly integrate with our advanced Fault Passage Indicators (FPIs) and measurement/protection devices. These adapters bridge the gap between modern sensor outputs and our devices’ sensor-type inputs, which support voltage inputs of AC 3.25 V/√3 and AC 225 mV.
More specifically, these adapters are intended to connect MV sensors—typically “combi sensors” that include both current and voltage channels in a single connector, as defined by IEC 61869 and older IEC 60044 standards—to our devices that use separate RJ45 connectors for current and voltage inputs. For example, an FPI or meter may have one RJ45 port with 3 current measurement input channels and another RJ45 port with 3 voltage measurement input channels. Our combi sensor adapters split the outputs from three combi sensors into two RJ45 connectors—one carrying the 3 current channels and the other carrying the 3 voltage channels—ensuring full compatibility and optimal performance.
This design ensures flexibility, broad compatibility, and a plug-and-play experience for integrators working with modern sensor-equipped MV networks.
Features
Simplified Wiring and Installation: The ability to connect via wire to the low-voltage secondary circuit simplifies the wiring process, making installation quicker and more cost-effective. This is particularly beneficial in complex or space-constrained environments.
Isolation and Safety: Adapters can provide additional electrical isolation between the high-power circuits and the sensitive electronic measurement and protection circuits. This enhances safety and reduces the risk of damage to the electronic components.
Standardisation and Interoperability: By conforming to widely accepted standards, adapters ensure interoperability between different types of equipment and sensors, simplifying integration in diverse electrical systems.
Modularity: The modular nature of using adapters allows for more flexible system design and easier troubleshooting and maintenance. Components can be added, removed, or replaced without affecting the rest of the system.
Ease of Upgrade and Replacement: If sensor technology evolves or if there’s a need to replace a sensor, using adapters makes it easier to upgrade without modifying the entire system. This is more cost-effective and less time-consuming.
Versatility and Compatibility: Adapters allow for the use of a wide range of current and voltage sensors, catering to different standards and specifications. This enables the devices to be used in various electrical environments without the need for custom-built hardware.
Cost-Effectiveness: Adapters can be a more cost-effective solution compared to designing and manufacturing specialised integrated circuits for each application, especially for low to medium volume applications.
Compatibility with Standards: An additional significant benefit of our adapters is their compatibility with a range of international and industry standards. This compliance ensures that our products meet the highest levels of quality, safety, and performance, aligning with global best practices. The relevant standards include:
- IEC 60044-7: About electronic voltage transformers, this standard covers the requirements for voltage sensor inputs, ensuring accuracy and reliability in voltage measurement.
- IEC 60044-8: This standard applies to electronic current transformers, guiding the requirements for current sensor inputs, crucial for precise current measurement.
- IEC 61869-10: Focusing on additional requirements for electronic current transformers, it extends the scope of IEC 60044-8, providing a more comprehensive framework for current measurement accuracy.
- IEC 61869-11: Similar to IEC 61869-10, this standard is specific to electronic voltage transformers, supplementing the guidelines of IEC 60044-7 for enhanced voltage measurement precision.
By ensuring compatibility with these standards, our adapters not only guarantee the technical excellence of our products but also facilitate their integration into various electrical systems worldwide. This compliance serves as a testament to our commitment to delivering state-of-the-art solutions in the field of electrical measurement and protection.
Specifications
| Device data | Combi sensor adapter | |
| Article number | COMBI SENSOR ADAPTER (IEC 61869) | COMBI SENSOR ADAPTER (IEC 60044) |
| Product Description | Combi sensor adapters with RJ45 connectors complying with IEC 61869-10 & IEC 61869-11 standards/IED supporting pinout according to Elseta RJ standards -> merging of current + voltage measurement provided by the three-phase merging with IOMOD FPI and IOMOD Meter devices. | Combi sensor adapters with RJ45 connectors complying with IEC 60044-7 & IEC 60044-8 standards/IED supporting pinout according to Elseta RJ standards -> merging of current + voltage measurement provided by the three-phase merging with IOMOD FPI and IOMOD Meter devices. |
| Input | AC 3x225mV + AC 3x 3.25 V/√3 | AC 3x225mV + AC 3x 3.25 V/√3 |
| Rated frequency | 50 Hz, 60 Hz (Range between 45 Hz and 65 Hz) | 50 Hz, 60 Hz (Range between 45 Hz and 65 Hz) |
| Output | AC 3x225mV + AC 3x 3.25 V/√3 | AC 3x225mV + AC 3x 3.25 V/√3 |
| Operating conditions | ||
| Operating temperature | -40°C … 55°C | -40°C … 55°C |
| Storage temperature | -40°C … 85°C | -40°C … 85°C |
| Relative humidity | max. 95 % (non condensing) | max. 95 % (non condensing) |
| Protection class | IP20 | IP20 |
| Dimensions and installation instructions | ||
| Case height x width x depth | 90 x 57.3 x 55 mm | 90 x 57.3 x 55 mm |
| Installation type | DIN Rail mounting | DIN Rail mounting |
| Warranty | 2 years | 2 years |
Documentation
Documentation coming soon.
Order
COMBIA-60044 – 3-phase Combi sensors adapters with RJ45 connectors to Elseta RJ standards for connection with IOMOD FPI and IOMOD Meter (by standard IEC 60044)
COMBIA-61869 – 3-phase Combi sensors adapters with RJ45 connectors to Elseta RJ standards for connection with IOMOD FPI and IOMOD Meter (by standard IEC 61869