B+K precision Sefram DAS1800, Руководство пользователя, Страница: 3 / 73

Sefram CHAPTER 1. SAFETY AND SYMBOLS
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Before powering up the device :
• Read and understand the safety and operating information in this manual.
• Follow all listed safety precautions.
• Operating the instrument with the wrong supply voltage voids the warranty
• Make all connections to the instrument before switching it on.
• Do not use the instrument in any way not specified in this manual or by SEFRAM. Failure
to observe these precautions or warnings elsewhere in this manual constitutes a violation of
the safety standards relating to the design, manufacture and intended use of the instrument.
SEFRAM assumes no responsibility for any failure by the customer to comply with these
requirements.
1.0.1 Category rating
IEC 61010 defines safety categories that specify the amount of electrical energy available and the surges that can
occur on the electrical conductors associated with these categories. The category index is a Roman numeral from
I, II, III or IV. This classification is also accompanied by a maximum voltage, which defines the expected voltage
pulses and required insulation distances. The categories are as follows :
• Category I (CAT I) : defines measuring instruments whose measurement inputs are not intended to be
connected to the mains. Environmental voltages are generally derived from an energy-limited transformer or
battery.
• Category II (CAT II) : defines measuring instruments whose measurement inputs are intended to be con-
nected to the mains supply via a standard wall socket or similar sources. Examples include portable tools
and household appliances.
• Category III (CAT III) : defines measuring instruments whose measurement inputs are intended to be con-
nected to a building’s electrical network. Examples include measurements inside a building’s electrical panel,
or the wiring of permanently installed motors.
• Category IV (CAT IV) : defines measuring instruments whose measurement inputs are intended to be con-
nected to a building’s primary power supply or other external wiring.
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Do not use this instrument in an electrical environment with a higher category than that specified
in this manual. You must ensure that each accessory used with this instrument has a category
classification equal to or higher than that of the device to maintain the category classification of the
instrument. Failure to do so will reduce the category classification of the measuring system.
1.0.2 Power supply
This instrument is designed to be powered from a CATEGORY II main power supply environment. The main power
supply must be 110 V RMS or 240 V RMS. Use only the power cord supplied with the instrument, and make sure
it is suitable for your country of use.
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If smoke is produced when the unit is switched on, unplug the power cord from the mains socket
and any cables connected to the unit, and contact B&K Precision or Sefram Technical Service.
DAS User manual 3