Precautions And Safety Measures; Safety Advice - HT HT10 Manual De Instrucciones

1. PRECAUTIONS AND SAFETY MEASURES

 Depending on the internal impedance of the voltage detector there will be a
different capability of indicating the presence or absence of operating
voltage in case interference voltage is present
 A voltage detector of relatively low internal impedance, compared to the
reference value of 100k, will not indicate all interference voltages having
an original voltage value above the ELV level. When in contact with the
parts to be tested, the voltage detector may temporarily discharge the
interference voltage to a level below ELV, but voltage will be back to the
original value when the voltage detector is removed
 When the indication "voltage present" does not appear, it is highly
recommended installing earthing equipment before proceeding
 A voltage detector of relatively high internal impedance, compared to the
reference value of 100k, may not permit to clearly indicate the absence of
operating voltage in case interference voltage is present
 When the indication "voltage present" appears on a part that is expected to
be disconnected from the installation, it is highly recommended confirming
by other means (e.g. use of another voltage detector, visual check of the
disconnected parts of the electric circuit to be tested, etc.) that there is no
operating voltage on the part to be tested and to conclude that the voltage
indicated by the voltage detector is an interference voltage
 A voltage detector declaring two values of internal impedance has passed a
performance test of detecting interference voltages and is (within technical
limits) able to distinguish operating voltage from interference voltage and
has a means to directly or indirectly indicate which type of voltage is present
Before and after carrying out the measurements observe the following instructions
 The instrument cannot be used if the battery cover is open
 Avoid measuring in humid or wet environments
 Make sure that environmental conditions are within the limits indicated in § 7.2.1
 Avoid measuring in presence of explosive gas, steam or excessive dust
 Do not touch exposed metal (conductive) parts such as test lead ends, sockets, fixing
objects, circuits etc.
 Avoid measuring if you note anomalous conditions such as breakages, deformations,
fractures, strange substances, blind display etc.
 In order to avoid electrical shock, the valid safety and VDE regulation regarding
excessive contact voltages must receive your utmost attention, when working with
voltages exceeding 120V (60V) DC or 50V (25V) rms AC. The values in brackets are
valid for limited ranges (as for example the healthcare and agricultural sector).
In this manual, and/or on the instrument, the following symbols are used:
Caution: refer to the instruction manual. Improper use may damage the
instrument or its components
Danger of high voltage: risk of electrical shocks
Double insulated meter
The instrument complies with the regulation of the TÜV Association for
Electrical, Electronic & Information Technologies and with the rules of "Geprüfte
Sicherheit"

SAFETY ADVICE

EN - 2
HT10