ABB Air Circuit Breaker E2.2 1600 A

Circuit-breaker OFF: Open the circuit-breaker

Circuit-breaker connected: Switch the circuit-breaker in withdrawable version to the connected position and reposition the crank in its seat

Trip unit Parameters: Adjust the protection trip unit in accordance with the design specifications of the installation

Removal of the Ekip TT: If present, remove the Ekip TT unit

Connecting the voltage: Connect the auxiliary voltage

Closing the switchgear: Close the switchgear door

Charging the springs: Charge the closing springs

Undervoltage coil: Make sure that undervoltage coil is energized

Putting into service — Introduction

Ensure the circuit-breaker is put into service for the first time or after prolonged inactivity

Test the circuit-breaker with all switchgear apparatus de-energized

Verify that the verifications are performed by skilled persons in the electrical field

Ensure sufficient change of air to avoid overtemperatures

Ensure location is clean and free of installation refuse

Verify circuit-breaker is mounted correctly with proper tightening torques and clearances

Check that the interlocking devices are installed and operate correctly

Ensure interlocks are not tested in the Test or Disconnected positions

Describe any issues found during the interlock check

Maintenance Frequency and Operations

Select the frequency of maintenance activity

Refer to the kit sheet for maintenance operations

Check that the interlocking devices are installed and operate correctly

Ensure interlocks are not tested in the Test or Disconnected positions

Document the maintenance frequency based on the table guidelines

Was the cable replacement performed after a trip due to a short-circuit?

Was the cable replacement performed as part of the maintenance operations?

Select the maintenance frequency based on environment

Set the circuit-breaker to the open position and discharge the springs of the operating mechanism

Is the circuit-breaker withdrawable?

Disconnect the power supply to the power circuit and auxiliary circuits and visibly ground the terminals on both the supply side and load side

Inspections and General Cleaning

Ensure the circuit-breaker is clean

Remove dust and oily substances or excess grease with a clean, dry cloth and mild detergent if necessary