Advertisement
Chapter 1 Safety Information and Precaution
1.3.1 Pre-power Check after Initial or Maintenance Overhaul
◆ Make sure the high voltage input and output cable connection terminal screws are tight.
◆ Make sure that the cables between the cabinets, which have been separated due to transport,
are properly and tightly connected.
◆ Make sure that all control and signal cables are correctly and tightly connected.
◆ Make sure that the system ground wire between all cabinets separated by transport is reliably
connected to the plant ground.
◆ Make sure that the series cables between the units and the neutral cable are correctly and tightly
connected.
1.3.2 Pre-routine Power Supply Check
◆ Remove all grounding protection wires before sending power.
◆ Check that the filters do not need replacing.
◆ Check that the AC drive fault message has been processed correctly.
◆ Close and lock the cabinet door of the AC drive.
1.3.3 Power Outage Operation
1. Notify all relevant work stations to prepare for power failure.
2. Press the "stop" button of the high-voltage AC drive to stop the operation of the equipment.
3. Disconnect the circuit breaker of the user switchgear.
1.3.4 Inspection Operation
◆ Take the necessary measures when repairing the line: disconnect the user's switchgear circuit
breaker, disconnect the disconnecting switch in question and at the same time hang a warning
sign to prevent others from delivering power midway.
◆ Make sure that it is stopped and that the high-voltage live indicator does not display.
◆ After the high and low voltage power failure, the power must be tested before work; for high
voltage testing, the corresponding voltage level of the detector should be used and insulating
protective equipment must be worn.
◆ After verifying that there is no electricity, ground the three-phase incoming wires of the
construction equipment to ensure the safety of the staff.
ACH200 Series High Voltage Variable Frequency Speed Control System Operating Manual
8
Advertisement
