Online condition monitoring device (OLM2) on high voltage Circuit Breakers

This device is capable of monitoring and detecting various parameters according to the specifications outlined:

SF6 Gas Monitoring:

• Utilizes a specialized sensor for measuring SF6 gas density.

• Capabilities include measuring gas temperature, monitoring SF6 leak rates, and calculating the optimal date for refilling.

Mechanical Operation Analysis:

• Measures operational times for closing and opening cycles.

• Evaluates primary contacts separation speed, damping, and contact overtravel.

• Identifies signs of mechanical deterioration, such as increased friction, corrosion, breakage, spring fatigue, wear on linkage rods, and damping issues.

Recharging Motor Performance:

• Monitors motor supply voltage, current, and consumed energy.

• Detects defects in motors or limit switches and measures spring travel.

Hydraulic Operating Mechanism:

• Tracks pump motor operating time.

• Identifies internal and external leaks and monitors threshold pressure within the hydraulic system.

Switching Operations:

• Measures current during breaking operations.

• Assesses primary contact wear and arc duration.

Auxiliary and Control Circuits:

• Checks the continuity of operating coils, measures coil current, voltage, resistance, and armature operation time and energy consumption.

• Monitors auxiliary supply voltage and ensures heater integrity.