• Use a vacuum cleaner and a low-lint, clean cloth to remove dust and debris from insulating materials. Apply manufacturer-recommended cleaning solvents if necessary.
• Look for signs of arcing, thermal damage, rust, corrosion, deformation, or physical damage on components. Examine the contacts for discolouration, wear, and pitting.
• Clean the contacts and ensure proper contact alignment. Check for adequate contact pressure and verify that all contacts close simultaneously when manually operated. Replace contacts or springs as a set to maintain uniform performance.
• Inspect springs for wear and verify correct spring pressure.
• Examine and clean the arc chute, checking for cracks or other damage.
• Inspect for loose, broken, or worn-out components and repair or replace as required.
• Check the condition and resistance of coils and verify the charging gear's performance.
• Lubricate moving parts as per the manufacturer's recommendations to ensure smooth operation.

• Severe arcing will occur at the circuit breaker's main contacts.
• The circuit breaker will trip instantly via its instantaneous release mechanism.
• Sparks may be visible at the generator terminal box, near the circuit breaker's isolating plugs.
• In severe cases, a switchboard fire could result.
• If only one generator is running, a complete blackout will occur. If two generators are running in parallel, the entire load will transfer to the healthy generator, potentially causing it to trip on overcurrent and resulting in a blackout.

Checks Post short circuit:

• Inspect all components for damage, deformation, or wear.
• Verify the tightness of all electrical connections.
• Check the generator for insulation loss, physical damage, and wear and tear.
• Inspect armature windings, field circuits, and cables.
• Identify the fault location and rectify it before resuming operations.

• Immediately operate the emergency manual trip mechanism of the circuit breaker.
• Completely isolate the affected generator, switching off its entire load.
• Open the field circuit supply to cease voltage generation.
• Locate and rectify the fault, ensuring the system is safe before re-energizing