HBM GEN3i, Руководство пользователя

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2.3 Grounding
The instrument must be used with a protective ground connection via the
protective ground conductor of the supply cable. The protective ground
conductor is connected to the instrument before the line and neutral
connections are made when the supply connection is made. If the final
connection to the supply is made elsewhere, ensure that the ground connection
is made before line and neutral connections are made.
WARNING
Any interruption of the ground connection, inside or outside the
instrument, is likely to make the instrument dangerous. Intentional
interruption is prohibited.
For protection against electric shock, all external circuits or equipment need a
safe insulation. Therefore, peripheral equipment must not be connected to the
system with a power supply without the SELV (Separated Extra Low Voltage)
rating unless explicitly mentioned.
Signal connections to the instrument should be connected after the ground
connection is made and disconnected before the ground connection is
removed, i.e. the supply lead must be connected whenever signal leads are
connected.
WARNING
For safety, it is essential that the protective ground connector of the
instrument is used whenever voltages greater than 33 V RMS, 46.7 V
PEAK or 70 V DC (IEC 61010
-
1:2010) are connected. This is to prevent the
instrument's case becoming live in the event of a protective ground
interruption, which could occur if the supply connector is accidentally
disconnected from the instrument.
The primary purpose of protective grounding is to provide adequate protection
against electric shock that could cause death or injury to personnel while
working on de
-
energized equipment. This is accomplished by grounding and
bonding to limit the body contact or exposure to voltages at the work
-
site to a
safe value if the equipment were to be accidentally energized from any source
of hazardous energy. The greatest source of hazardous energy in most cases
is direct energizing of the equipment from a power
-
system or source.
GEN3i
I3763-3.1 en HBM: public 25