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 it shall be ensured that the operator is free from
static electricity, as this could damage or 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 of a double beep and the
display activity.
• Any adjustment, repair or maintenance work on the clamp A-meter must only be
carried out by a qualified person, always taking into account the instructions 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 or
battery electricity supply.
• In the case of abnormal operation and/or performance, the equipment shall not
be used until it has been repaired and 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 at a high temperature or in a humid
environment.
WARNING
This equipment is designed according to EMC standards for portable measuring and
test instruments. Regardless, it is recommended to disconnect the test leads during
clamp measurements, as a high radiofrequency electromagnetic field might be present,
which can negatively affect the accuracy of the measurement.
