Excellence in Cable Fault Location: What We Learned at Renovables 2026
During the Renovables 2026 fair, held at the Puerta de Oro Event Center in Barranquilla, one of the topics that captured the most attention was fault location in electrical cables, particularly in medium voltage and renewable energy systems.
In this space, discussions delved into how the combination of regulations, technology, and methodology allows a historically complex process to be transformed into a precise, efficient, and safe operation.
Below, we share the main takeaways and how they align with the way we work at Power Quality.
The Challenge: Invisible Faults That Halt Operations
In electrical systems, especially those with directly buried cables, faults represent one of the greatest operational challenges. This is not only because they are difficult to detect, but also because when they occur, they cause:
Unexpected downtime
Financial losses
Interruptions in critical processes
During the talk, a key reality was highlighted: most of these faults are not sudden, but rather the result of progressive deterioration that was not identified in time.
The Regulatory Framework: IEEE 1234-2019
One of the pillars of the presentation was the IEEE 1234-2019 standard, a fundamental guideline for cable fault location. Its importance lies in three key principles:
Correct location methods: It defines appropriate technical procedures to identify faults without compromising the system.
System integrity: The goal is not only to find the fault but to do so while minimizing the risk of affecting other cables or the circuit's path.
Prevention of collateral damage: A poor procedure can generate new faults. The standard seeks to avoid interventions that worsen the situation.
This approach completely changes the logic: it is not just about repairing, but about doing it correctly right from the diagnosis.
The Key: Diagnosis Before Intervention
One of the most relevant concepts shared during the talk was the "doctor-type" approach. Before intervening, it is necessary to understand the problem. The process is based on four stages:
Fault analysis: The system is disconnected, and the type of fault is evaluated using tools such as a megohmmeter.
Classification: It is determined whether the issue is a:
Short circuit
High-impedance fault
Shield corrosion (Each type of fault requires a different treatment.)
Pre-location: Specialized equipment is used to determine the exact distance to the fault.
Pinpointing: The exact spot is identified in the field to carry out the repair.
This process makes it possible to shift from an uncertain search to a highly precise intervention.
Technology and Precision: The Role of the Alliance with Baur
To put this methodology into practice, technology is fundamental. In this context, the role of Baur—a leading Austrian company in cable diagnostics with a global presence and support in Latin America—was highlighted.
The alliance with companies like Power Quality allows for:
Access to specialized diagnostic equipment
The application of advanced location methodologies
A significant reduction in intervention times
Thanks to this, processes that previously could take days can now be resolved in approximately 2 to 3 hours, depending on the complexity.
Critical Factors for Effective Fault Location
In addition to technology and regulations, the talk highlighted two determining factors:
Cable Routing Information: Knowing the cable route is key. A straight run is not the same as one with curves, zigzags, or bends. This information directly impacts the accuracy of the diagnosis.
Technical Training: Technology alone is not enough. Highly trained personnel are required—professionals capable of interpreting data, selecting tools, and correctly executing each stage of the process. That is why continuous training is an essential part of the service.
From a Complex Problem to a Controlled Process
Historically, locating faults in buried cables has been viewed as a complex and uncertain process. Today, thanks to the combination of:
Regulations (IEEE 1234-2019)
Specialized technology
Structured methodologies
Trained personnel
It´s possible to turn this challenge into a controlled, precise, and efficient process.
Conclusion
The major takeaway from the talk at Renovables 2026 is clear:
Faults cannot be completely avoided, but they can be managed intelligently. Detecting them correctly, intervening with precision, and minimizing the impact on operations is what makes the difference between a reactive company and a prepared one.
At Power Quality, we apply advanced diagnostic methodologies to locate cable faults quickly, safely, and efficiently, minimizing downtime.
If your operation depends on electrical continuity, a timely diagnosis can make all the difference.
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