MD 9273 Leakage clamp General Instructions
6
1 General Instructions
This instrument has been designed in accordance with IEC 61010 series standards that regulates safety
requirements for the electronic measuring equipment and current measuring clamps. Present user manual
shall be read carefully in order to get the best out of this equipment. Safety instructions shall always be
complied with.
1.1 Safety measures
General
• If the clamp-meter is used in a manner not specified in this user’s manual, the protection provided
by the equipment may be impaired!
• This equipment can be used to carry out measurements in the CAT III
600V environment.
• When using this clamp meter, the user should comply with all the safety measures regarding:
− Protection against the electric current hazards.
− Protection of the clamp A-meter against incorrect use.
− Protection against electric shock hazard.
• For operator security, only the test probes supplied with the instrument shall be used.
• Do not use the clamp-meter and its accessories if any damage is noticed on them!
During use
• Before carrying out any measurements, the instrument shall be warmed up for at least 30 seconds.
• If the clamp-meter is used near any high level noise generating equipment, the reading might
become unstable or show significant errors.
• The maximum limits of the input values stated in the technical specifications tables shall not be
exceeded to avoid damage to the equipment.
• The rotary switch shall be in the correct position before starting a new measurement.
• Practice extreme caution when working near bare conductors.
• Any accidental contact with the bare conductor may cause an electric shock.
• Use caution when working with voltages higher than 60V DC or 30V AC RMS to avoid a risk of
electric shock.
• The test probe(s) shall be disconnected from the circuit under test before changing the function.
• During measurement fingers shall always be kept behind the protection ring, see ChapterInstrument
Description.
• The battery shall be changed when the symbol is shown in order to avoid incorrect
measurement readings.
Symbols
The symbols used in this manual and in the equipment are as follows:
Measurement category III is for measurements performed in the building installation. Examples are measurements on
distribution boards, circuit-breakers, wiring, including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed
installation, and equipment for industrial use and some other equipment, for example, stationary motors with permanent
connection to the fixed installation.
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