ABB ACS880-87LC-4000A/4021A-7, Hardware Manual

Page: 12 / 144

12 Safety instructions
General safety in installation, start-up and maintenance
These instructions are for all personnel that install the converter and do maintenance work
on it.
WARNING! Obey these instructions. If you ignore them, injury or death, or
damage to the equipment can occur.
•
Use safety shoes with a metal toe cap. Use protective gloves.
•
Handle the converter modules carefully:
• Lift the module with a lifting device only. Use the designated lifting points. See the
converter hardware manual.
• Do not tilt the module. It will overturn very easily because it is heavy and its center
of gravity is high.
• Modules running on wheels: Make sure that the module does not topple over
when you move it on the floor: Whenever possible secure the module also with
chains. Do not leave the module unattended on a sloping floor.
•
Beware of hot surfaces. Some parts, such as heatsinks of power semiconductors,
remain hot for a while after disconnection of the electrical supply.
•
Keep the converter in its package or protect it otherwise from dust and burr from
drilling and grinding until you install it. Protect also the installed converter against
dust and burr. Electrically conductive debris inside the drive can cause damage or
malfunction.
•
Vacuum clean the area below the converter before the start-up to prevent the
converter cooling fans from drawing the dust inside the converter.
•
Do not cover the air inlet and outlet when the converter is running.
•
Make sure that there is sufficient cooling. Before power switch-on, make sure that
the liquid cooling circuit is filled up with coolant. Running the external cooling pump
dry will damage it. Also the converter will not cool down. See the converter hardware
manual.
•
Before you connect voltage to the converter, make sure that the cabinet doors are
closed. Keep the doors closed during operation.
•
Before you adjust the converter operation limits, make sure that the generator and
all driven equipment can operate throughout the set operation limits.
•
The maximum number of converter power-ups is five in ten minutes. Too frequent
power-ups can damage the charging circuit of the DC capacitors.
•
Make sure that safety circuits (for example, emergency stop, if any) are validated at
start-up.
•
Beware of the cooling fan blades. The fans can continue to rotate for a while after
the disconnection of the electrical supply.
•
Service the main contactor once a year. If not serviced, damage can occur to the
wind turbine.