ABB AFS670 Safety Instructions page 9

AFS670 | PRECAUTIONS AND SAFETY
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2019-04-30
Non-observance can lead to death or injury.
Safe circuits can be elevated to hazardous voltage due to wrong interconnec-
tion.
→ Take care to interconnect only circuits of the same circuit category – refer
also to the table on available interfaces.
→ Always assume a hazardous voltage to be present.
Non-observance can lead to death or injury.
Any liquid or conductive object entering the equipment enclosure will poten-
tially create electric shock and fire hazards.
→ Under no circumstances place metallic objects or receptacles containing
any liquids on the equipment.
→ Never insert pointed objects (e.g. screwdrivers or wires) into the equip-
ment or into the connection terminals for electrical conductors.
Non-observance can lead to death or injury.
Only connect power according the product identification plate.
Non-observance can lead to death or injury.
Do not put sharp item inside the device, the connectors for electrical power or
other contacts. Do not touch connectors in the device.
Non-observance can lead to death or injury.
Equipment might be connected to high voltages and can cause an electric
shock when incorrectly installed.
→ If a stationary battery is used as local power supply, the charging unit must
have a safety insulation according to EN 60950-1.
→ If an AC/DC power supply is used instead of a stationary battery, this must
also provide a safety insulation according to EN 60950-1.
Non-observance can lead to death or injury.
Insufficient overvoltage protection of the transmission interfaces will lead to
destruction of the transmission equipment. Since the overvoltage tries to dis-
charge to ground via the lowest resistance path, the surge can create
extremely high currents anywhere in the installation and may burn cables and
equipment. Onboard overvoltage protection is only adequate for inhouse con-
nections.
→ For electrical connections leaving the building external primary protection
with gas discharge tubes is mandatory.
Non-observance can lead to death or injury.
Cables connected from the local equipment to remote equipment can carry
large current flowing in the cable screens if there are different local earth
potentials at opposite ends that do not share the same earth connections.
Earth currents in cable screens can cause damage to cables and equipment
but also fire and injury to personnel.
SAFETY ADVICES
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