Give Your Distribution Grid the Precision It Deserves With SynchroGuard
Gain Unmatched Visibility to Accelerate the Energy Transition
Gain Unmatched Visibility to Accelerate the Energy Transition
SynchroGuard is the first intelligent solution specifically designed for distribution grids. It leverages high-resolution, time-synchronized measurements—200 times more frequent than conventional systems—using Phasor Measurement Units (PMUs), a technology originally developed for transmission networks.
Zaphiro has adapted this advanced technology to provide distribution grid operators with unprecedented visibility and real-time control. The result: proactive operations, reduced outages and increased hosting capacity for renewables.
Advanced Technology, Patented and Proven
Modular Software and Advanced Algorithms
Our patented D-PMU platform converts raw data into actionable insights: real-time monitoring, DER control, fault management and predictive analytics. The software is modular, scalable and fully interoperable with existing systems and can leverage data from third party devices.
PMU: High-Frequency, Time-Synchronized Measurements
Zaphiro’s PMUs measure voltage, current and phase angle at unmatched frequency and synchronization levels. They are fully compliant with IEEE C37.118 and were ranked Top-2 PMUs worldwide by NIST, outperforming standard accuracy limits by up to two orders of magnitude.
3-Phase Linear State Estimation Algorithms
Our state estimator delivers real-time visibility across distribution networks, including topology identification and island detection. It ensures high availability and automatically handles bad or missing data.
Advanced Fault Detection and Fault Distance Indicators Algorithms
Zaphiro’s proprietary algorithms combined with high-frequency PMU data enable unprecedented fault detection capabilities—even for low-magnitude or fast-transient events. They work across all network conditions and integrate seamlessly with protection, FLISR and predictive maintenance schemes.
Power Quality Monitoring Algorithms
Our power quality monitoring algorithms continuously assess voltage, current, frequency and harmonics with high temporal resolution. They detect and classify disturbances such as sags, swells, transients and unbalances, helping utilities ensure compliance with regulatory standards and improve overall service quality for end-users.
Predictive Maintenance Algorithms
Zaphiro’s predictive maintenance algorithms analyze real-time and historical data from PMUs to detect incipient faults and in general early signs of asset degradation. By identifying trends and anomalies in electrical parameters, our system helps utilities anticipate failures before they occur, optimize maintenance schedules and extend the lifespan of critical infrastructure.
SCADA/Control Room Integration
SynchroGuard seamlessly integrates with existing SCADA and DMS platforms, delivering high-frequency, time-synchronized data directly to control rooms. Operators gain enhanced situational awareness, faster fault localization and improved decision-making—without disrupting existing workflows. This integration supports both legacy and modern systems, ensuring a smooth transition to smarter grid operations.
Installation Simplicity and Safety, Minimal TCO
Our solution features non-intrusive, flexible Rogowski coil sensors and a compact, easy-to-install cabinet that can typically be deployed in under an hour per substation—without service interruptions. The system’s intuitive interface and low-maintenance design ensure straightforward operation. Together, these advantages contribute to one of the lowest Total Cost of Ownership (TCO) on the market, making it ideal for retrofit projects or deployments with limited resources.

Take a closer look at the SynchroGuard solution — it’s not only the most accurate and complete, but also intuitive and user-friendly, ensuring fast adoption by your team.
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Discover how SynchroGuard can modernize your grid and optimize your operations.
Contact usBuilt for Every Stakeholder

For Operations Teams
- Reduced SAIDI and SAIFI
- Fewer outages thanks to predictive maintenance
- Automated fault location
- Real-time data for fast decision-making
For Asset Management Teams
- Data-driven insights into asset health and performance
- Extended equipment lifespan through predictive analytics
- Optimized maintenance planning and resource allocation
For Planning Teams
- High-resolution data to support grid reinforcement decisions
- Improved load forecasting and DER hosting capacity assessment
- Enhanced investment planning with historical network visibility, as well as periodic and trends reports
For Innovation Leads
- Streamlined DER integration
- Actionable data for grid planning and predictive maintenance
- A truly disruptive smart grid solution
For Executives
- Reduced OPEX and CAPEX
- Improved service continuity and regulatory compliance
- A trusted, future-proof solution
Full Visibility with Partial Coverage
Targeted instrumentation covering just 10–20% of the grid provides a full behavioral reconstruction. SynchroGuard integrates natively into your existing SCADA system, delivering real-time situational awareness, predictive insights and investment optimization through improved planning. The result: enhanced asset management and extended equipment lifespan.
Simplicity that Drives Efficiency
At Zaphiro, we know that resources are limited. That’s why SynchroGuard is engineered for, intuitive use and minimal maintenance. Expect a lower TCO, reduced training needs and faster operational impact.
Cybersecurity by Design
Our solutions are developed with critical infrastructure in mind. By minimizing the number of components and streaming data flows, we increase resilience and reduce attack surfaces. Security is a top priority from day one.