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1.1.1
Safety Information: danger
Ground Safety
Ensure that all proper ground connections have been made before operating the system.
Never operate the equipment before connecting the ground wire.
Dangerous Voltages
Voltages higher than 30 VAC (alternating current) or 42 VDC (direct current) are classified as
dangerous voltages (EN 60950).
Damage
Replace the power cord immediately if there is any sign of damage.
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Replace any damaged safety equipment immediately (covers, labels, safety cables).
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Use Siemens-approved cables and modules only. The use of accessories that are not
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recommended for the system may cause it to malfunction.
Make sure power is turned off while equipment is being serviced.
When maintenance services require shutting down the system, make sure to disconnect all
power supplies.
Working on low voltage network circuits
Only qualified technical personnel should work on low voltage network systems (100-
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240 V ac).
Never work alone when working with high voltage circuits. Make sure there is another
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person present who knows the location of the circuit breakers.
Never touch live wires that are not properly insulated.
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Ensure that no other power source is connected to the equipment. Make sure that the
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power source being used is protected by means of an additional breaker or fuse.
Make sure that no circuit is powered up before you start working on the equipment. Never
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assume that all circuits are automatically disconnected every time a breaker or additional
fuse is disconnected.
Do not connect or remove telephone lines or circuit boards during a thunderstorm.
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Always consider the possibility that a leakage current may be present.
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When working outdoors, never leave the equipment unsupervised.
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HiPath 1120, Installation Guide
Important Information
Safety Information
1-5
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