A comprehensive solution for continuous control and diagnostics of power engineering assets

Online monitoring provides timely, accurate, and continuous information about the condition of critical electrical equipment, enabling early detection of anomalies and effective maintenance planning. Intertest offers complete solutions for the design, integration, and configuration of online monitoring systems that cover all key reliability parameters.

What the overall online monitoring system includes

Partial Discharge (PD) Monitoring

We use the latest generation of partial discharge systems, including the ICMobserver – a multifunctional instrument combining:

• spectrum analyzer
• time-domain oscilloscope
• voltage measurement
• PD monitoring

Thanks to advanced digital signal processing and parallel PRPD diagrams, ICMobserver delivers detailed condition assessment of transformers, generators, and other high-voltage equipment, even in noisy environments. Its modular design allows future expansion – DGA, temperature control, load monitoring, and more.

Insulating Oil Monitoring (DGA – Dissolved Gas Analysis)

To protect transformer assets, we implement Megger’s online DGA monitoring solutions – InsuLogix® G2.

Key advantages:

• High sensitivity: real-time measurement down to 0.5 ppm acetylene
• Early detection of potential faults: from low-energy PD to critical arcing defects
• Condition-Based Maintenance (CBM) capability
• Improved cost control through accident prevention

Temperature Control and Load Monitoring

Tracking temperature parameters is essential for preventing thermal failures. The system can include sensors for:

• winding temperatures
• oil temperatures
• ambient temperature
• load / current

Vibration Monitoring

Vibration analysis supports early detection of mechanical issues in:

• generators
• motors
• other rotating machines

Online vibration monitoring provides early warning of imbalance, misalignment, looseness, and other defects.

Client Benefits

The online monitoring system provides:

• early fault detection
• reduced risk of failures
• optimized maintenance costs
• reliable operation of equipment
• a unified interface for monitoring PD, DGA, temperature, vibration, and electrical parameters

* The topology shown in the image provides a centralized hub for collecting, evaluating, and visualizing all data from the monitoring subsystems.