As electric utilities work to modernize aging infrastructure, improve reliability, and accommodate changing electricity demands, having accurate, real-time information about the distribution network is more important than ever. Traditional monitoring methods may not provide the visibility utilities need to identify developing issues, understand power quality, and make informed operational decisions.
Micatu advanced optical sensors give electric utilities a new way to monitor medium-voltage distribution systems with accurate measurements of voltage, current, and harmonics. Designed for overhead lines, underground distribution equipment, and substations, Micatu's optical sensing technology helps utilities improve grid visibility, support system reliability, and make better use of real-time electrical data.
For utilities investing in grid modernization, Micatu offers a range of sensing solutions designed to meet different monitoring requirements across the distribution network.
Optical sensing technology uses optical measurement techniques to capture electrical information without relying on conventional electrical sensing methods at the point of measurement. Micatu's technology is designed to provide accurate voltage and current measurements while supporting harmonic analysis for a more detailed understanding of power system performance.
For electric utilities, this information can help operators better understand network conditions, monitor electrical loads, evaluate power quality, and make more informed decisions about system operations.
Micatu's advanced optical sensors are designed for medium-voltage applications across overhead distribution lines, underground networks, and substations.
Key benefits include:
By providing more detailed information about electrical system conditions, Micatu sensors can help utilities make data-driven decisions as they modernize their distribution infrastructure.
Overhead distribution systems present different monitoring challenges depending on conductor configurations, voltage levels, and existing equipment. Micatu offers several optical sensor options designed to accommodate different installation requirements.
The Micatu OLH235 is a combination voltage and current sensor designed to install directly on a conductor or round bus bar. Aluminum anti-rotation wire clamps help secure the sensor in position.
With an insulator body rating of 38 kV, the OLH235 is designed for applications requiring both voltage and current measurement. It supports a nominal current measurement range of 10–3,000 A and provides harmonic measurement capabilities for voltage through the 50th harmonic and current through the 11th harmonic.
Micatu specifies an accuracy class of ±0.5% under the rated temperature range.
One practical advantage is installation time. According to Micatu's product literature, a typical three-phase system can be installed in less than three hours, helping reduce deployment time.
The OLH235 is worth considering for utilities looking to add monitoring capabilities to existing overhead conductors or bus bar installations.
The Micatu OLP225 combines voltage and current measurement in a linepost sensor insulator with a reversible mounting system.
Rated for voltage applications from 4 kV to 27 kV, the OLP225 accommodates conductors ranging from #4 AWG to 954 kcmil. Its mounting flexibility makes it a useful option for overhead distribution applications where a linepost-style installation is preferred.
Like the OLH235, the OLP225 supports current measurements from 10–3,000 A and harmonic analysis for voltage and current.
For utilities evaluating new monitoring points or upgrading existing overhead distribution equipment, the OLP225 provides an integrated sensing option designed around linepost installation requirements.
For higher-voltage overhead applications, the Micatu OLP269 offers a combination voltage and current sensor with a 72 kV insulator body rating.
The OLP269 supports voltage measurements from 4 kV to 72 kV and accommodates conductors ranging from #4 AWG to 954 kcmil. Its reversible mounting system allows installation vertically, horizontally, or directly to an arm, providing flexibility for different equipment configurations.
The sensor supports a nominal current measurement range of 10–3,000 A, with harmonic measurements for voltage through the 50th harmonic and current through the 11th harmonic.
For utilities that need monitoring capabilities across a broader range of overhead voltage applications, the OLP269 provides another option within Micatu's optical sensing portfolio.
Underground distribution networks require monitoring solutions that work with the equipment and connection methods already used in the field. Micatu's underground sensors are designed to integrate with industry-standard load-break elbows, offering utilities options for monitoring underground equipment without relying exclusively on overhead sensing configurations.
The Micatu OUG125 is a voltage-only optical sensor designed to install directly into an industry-standard load-break elbow.
Rated for applications from 4 kV to 27 kV, the OUG125 is designed for monitoring the primary side of network transformers and equipment in pad-mounted switchgear.
The sensor is compatible with specified 15 kV and 25 kV rated dead-break elbows from manufacturers including Elastimold, Richards, Eaton, and Euromold. Compatibility should be confirmed against the specific equipment and installation requirements.
Micatu indicates that installation on a typical three-phase system can be completed in less than three hours.
For utilities that need voltage monitoring without requiring current measurement at the same location, the OUG125 provides a focused solution for underground distribution applications.
When both voltage and current monitoring are needed, the Micatu OUG225 combines these capabilities in an underground sensing solution.
The OUG225 is designed to install directly into an industry-standard load-break elbow, with the current ring installed on a conductor or bus. It supports voltage measurements from 4 kV to 27 kV and a nominal current measurement range of 10–1,500 A.
The sensor provides harmonic measurements for voltage through the 50th harmonic and current through the 11th harmonic.
Like the OUG125, the OUG225 is designed for specified 15 kV and 25 kV rated load-break elbow applications, with compatibility listed for Elastimold, Richards, Eaton, and Euromold.
For utilities seeking additional visibility into underground distribution equipment, the OUG225 provides combined voltage and current measurement in a configuration designed for underground installations.
Optical sensors provide the measurements, but utilities also need a way to access and use that information within their monitoring and control systems.
Micatu's M410B data processor supports multiple digital, analog, relay, and communication inputs and outputs. Its modular design includes hot-swappable sensor modules and field-upgradable hardware and software.
The M410B supports communication interfaces including USB-A, RS232 serial, RJ45 Ethernet, and a console port. It also supports SCADA communications over TCP/IP, including DNP 3.0 and IEC 60870-5-101 and IEC 60870-5-104.
Additional capabilities include external memory, wired or local data collection, and the ability to daisy-chain multiple M410B processors for high-availability applications and monitoring multiple substation feeders.
This flexibility helps utilities integrate optical sensing into broader monitoring strategies while maintaining options for future system upgrades.
For utilities planning grid modernization projects, communication compatibility and the ability to expand monitoring infrastructure are important considerations when selecting sensing equipment.
Protecting sensing and monitoring equipment is another important consideration in outdoor utility installations.
Micatu's WPE401 electrical enclosure is constructed from high-impact polycarbonate and is designed for indoor or outdoor use. It carries NEMA Type 4X and IP66 ratings, providing protection against dust and water ingress when properly installed.
Additional features include UV and chemical resistance, a stainless-steel locking latch, mounting feet, and an adjustable T-rail back panel mounting system.
The WPE401 is designed to accommodate monitoring equipment and provide flexibility when installing devices and DIN rails.
For applications where environmental exposure and equipment protection are important, the WPE401 offers an enclosure option within Micatu's product lineup.
Grid modernization involves more than replacing aging equipment. Utilities also need better information about how their distribution systems are operating.
Accurate voltage and current measurements can help utilities evaluate system conditions, while harmonic monitoring provides additional information about power quality. When deployed at appropriate locations, these measurements can contribute to improved operational awareness and support maintenance and planning decisions.
Micatu's combination of overhead and underground sensors gives utilities options for expanding monitoring coverage across different parts of the distribution network.
The technology can support several important utility objectives:
Improving distribution system visibility: Monitor voltage and current at selected locations across overhead and underground networks.
Supporting power quality analysis: Use harmonic measurements to better understand electrical conditions and investigate potential power quality concerns.
Supporting operational reliability: Improve access to system measurements that can help operators evaluate changing conditions and make informed decisions.
Simplifying deployment: Select sensors designed for particular installation configurations, including direct conductor mounting, linepost installations, and load-break elbow applications.
Planning for future monitoring needs: Use the M410B processor's communication capabilities and modular architecture to support evolving monitoring requirements.
Micatu also identifies sustainability and emissions reduction among the broader benefits of its technology. Improved system information and more efficient operations can support utility modernization efforts, although specific energy savings and emissions reductions depend on the application and how the technology is deployed.
The best sensor for a particular application depends on voltage class, whether voltage-only or combined voltage and current measurements are needed, the equipment being monitored, and the utility's communication requirements.
The following overview can help narrow the options:
| Micatu Model | Application | Primary Measurement | Key Design Feature |
|---|---|---|---|
| OLH235 | Overhead | Voltage and current | Mounts directly on conductor or round bus bar; 38 kV insulator body rating |
| OLP225 | Overhead | Voltage and current | Reversible linepost mounting; 27 kV insulator body rating |
| OLP269 | Overhead | Voltage and current | Flexible mounting; 72 kV insulator body rating |
| OUG125 | Underground | Voltage only | Installs into compatible load-break elbow applications |
| OUG225 | Underground | Voltage and current | Load-break elbow installation with separate current ring |
| M410B | Monitoring and data processing | Processes sensor data | Modular processor with multiple communication interfaces |
Selecting the correct model requires confirming the specific voltage class, conductor or elbow configuration, measurement requirements, and system integration needs.
Micatu optical sensors are designed to measure voltage and current in medium-voltage electrical distribution systems. Depending on the model, they can be installed on overhead conductors, in linepost applications, or within compatible underground distribution equipment. Several models also support harmonic measurements for power quality monitoring.
Overhead models such as the OLH235, OLP225, and OLP269 are designed for conductor, bus bar, or linepost installations. Underground models such as the OUG125 and OUG225 are designed to integrate with compatible load-break elbow applications.
The appropriate model depends on the equipment being monitored and the measurements required.
The Micatu OUG125 is a voltage-only sensor designed for compatible underground distribution applications. It installs directly into an industry-standard load-break elbow and is rated for voltage measurements from 4 kV to 27 kV.
The OLH235, OLP225, OLP269, and OUG225 provide combined voltage and current measurement capabilities. The overhead models are designed for conductor, bus bar, or linepost installations, while the OUG225 is intended for compatible underground applications.
The M410B processes sensor data and supports multiple digital, analog, relay, and communication interfaces. It supports SCADA communications over TCP/IP, including DNP 3.0 and IEC 60870-5-101 and IEC 60870-5-104, and offers a modular design with field-upgradable hardware and software.
Yes. The combination voltage and current sensor models covered in Micatu's product literature support voltage harmonic measurement through the 50th harmonic and current harmonic measurement through the 11th harmonic.
Start by identifying the equipment being monitored, the system voltage, whether voltage-only or combined voltage and current measurements are needed, and the required communication interfaces. Confirm model-specific ratings and installation compatibility before selecting a sensor.
As utilities continue to invest in distribution system monitoring and grid modernization, access to accurate electrical measurements is an important part of building a more informed and resilient power network.
Micatu's advanced optical sensing portfolio offers options for overhead conductors, linepost installations, underground distribution equipment, and data processing. With model-specific measurement capabilities and flexible communication options, these products can help utilities address a range of monitoring requirements.
Powertech Associates and Utility Power Supply Company work with electric utilities to provide access to products and solutions for the power delivery industry. If you're evaluating optical sensing technology for a distribution or substation project, our team can help you identify the appropriate Micatu products for your application.
Contact Powertech Associates to discuss your monitoring requirements and explore Micatu optical sensing solutions for your utility.
