MD9272 Leakage Clamp TRMS Meter with Power Function General Instructions
5
Symbols
The symbols used in this manual and in the equipment are as follows:
Warning: check the instruction manual. Any incorrect use may cause damage to the
equipment or its components.
Earth
Complies with European Union Directives.
This equipment has double insulation.
Allows use with dangerous voltage conductors.
Instructions
• Before opening the equipment, the instrument shall be disconnected from any
source of electricity supply and shall be ensured that the operator is free from static
electricity, as this could destroy the internal components.
• Before using this equipment it shall be checked for proper operation; by turning
the rotary switch to A or V position and verification a double beep and the display
activity.
• Any adjustment or repair or maintenance work on the clamp A-meter must only be
carried out by a qualified person, always taking into account the instructions
included in this manual.
• A “qualified person” means somebody familiar with the installation, construction
and operation of the equipment, and with the risks implied. This person should be
trained and authorized to charge and discharge energy from the circuits and the
equipment in accordance with established practice.
• When the equipment is open, some internal components can retain dangerous
power, even after the equipment has been disconnected from the mains electricity
supply.
• In the case of abnormal operation and/or performance, the equipment shall not be
used until it has been repaired/verified.
• The battery shall be removed from the clamp-meter if it is not going to be used for
a long period, and shall not be stored in a high temperature or humid environment.
WARNING
This equipment is designed according to EMC standards for portable measuring and test
instruments. Anyway, it is recommended to disconnect the test leads during current
measurements, as a high radiation radiofrequency electromagnetic field might be
present, which can negatively affect the accuracy of the measurement.
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