ZES ZIMMER LMG450, Руководство пользователя

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Z E S ZIMMER Electronic Systems GmbH Chapter 1
19
1 Instructions and Warnings
1.1 Safety Instructions
This instrument conforms to the IEC61010-1 guide lines concerning the protection of electrical
instrumentation and has left the factory in a mechanically and electrically safe condition. To
maintain safe operation, the user must follow the instructions and warnings contained in this
manual. The instrument satisfies the requirements of protection class I (protective earthing).
Accessible metal parts of the instrument are tested with respect to the mains connection using a
potential of 1500V/50Hz. Before connecting the apparatus to the mains supply, ensure that the
voltage displayed on the type plate equals the available mains supply voltage. A possibly
installed power supply selector has to be set up. The mains plug must only be connected to an
earthed mains outlet. The earth connection must not be discontinued or broken by using an
extension lead without earth connection. The instrument must be connected to the mains
supply before any measurement or control circuits are connected to it. Any disconnection of
the earth lead inside or outside of the instrument will endanger the operating personal.
Deliberate disconnection of the earth is not permitted. When the instrument is used in
combination with other instruments, then proceed as follows:
The external earth connector on the back of the instrument must not be used to earth other
electrical equipment. It is only intended to provide additional earthing of the instrument in case
an error occurs in the circuit under test which may cause an earth current to flow in excess of
10A which cannot be carried by the mains supply cable. If this further earthing cannot be
implemented, then the measuring circuit must be suitably fused prior to its connection to the
instrument. In this case, it is necessary to connect the measuring instrument to an earth
connection point via the earth connector using a conductor with sufficient cross section. If this
is not possible, the instrument has to be connected to the circuit to be tested via adequate
fuses. The measuring inputs are isolated to case for operating voltages up to 600V according
to protection class I.
By opening the instrument components are exposed which may be raised to a hazardous
potential. All voltage sources must be disconnected from the instrument before any instrument
covers are removed for the purpose of calibration, service, repair or changing components.
When access is required for calibration, service or repair, only suitably qualified personnel are
permitted access to an opened and energised instrument.
Fuses may only be replaced with the same ratings and the same types. The use of repaired or
short circuited fuses is not permitted. The instrument should be disconnected and disabled from
accidental use when it is suspected that its safe operation cannot be warranted. The required