Drummond MTL10 Руководство по эксплуатации - Страница 2
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2. PRODUCT SPECIFIC SAFETY INFORMATION
Measurement Category III (CAT III) is applicable to test and
measuring equipment connected to the distribution part of the
building's low-voltage MAINS installation.
Measurement Category IV (CAT IV) is applicable to test and
measuring equipment connected at the source of the building's
low-voltage MAINS installation.
The specified measurement category means the voltage indicator
will be safe to the user if inadvertently connected to a voltage up to
1000V AC/DC to earth within a CAT III environment and 600V
AC/DC to earth within a CAT IV environment. It does not mean it
can be used to test for a voltage beyond its maximum specified
limits.
2.1 Precautions
This product has been designed with your safety in mind, but
please pay attention to the following warnings and cautions before
use.
Warning
The voltage indicator must only be used by a skilled and
competent person who is familiar with the relevant regulations, the
safety risks involved and the consequent normal safe working
practices.
Before each use the voltage indicator should be examined for
damage, cracks, cuts or scratches to the housing and cable. The
cable has black outer and contrasting inner insulation, to allow
damage to the cable to be easily identified. If there is any doubt
the voltage indicator should not be used.
The voltage indicator must not be dismantled or modified in any
way by unauthorized persons. The safety of the voltage indicator
cannot be guaranteed under such circumstances and must not be
used.
Cautions
Avoid severe mechanical shock or vibration and extreme
temperature.
If the voltage indicator has been stored or transported in
temperatures outside its normal operating range it should be given
sufficient time to stabilise in the environment where it is to be used.
An acclimatisation time of at least 2 hours is required prior to
operation of the voltage indicator.
Make sure the voltage indicator is dry, clean and free from dust,
grease and moisture while in use to avoid the danger from electric
shock due to surface leakage.
Before and after each use, the voltage indicator must be proven
using a suitable proving device or a known good voltage source.
Do not use the voltage indicator if any expected LED's fail to
illuminate correctly during proving.
Testing for a voltage that exceeds the specified limits of the voltage
indicator may damage the voltage indicator and expose the
operator to a shock hazard. Always check the voltage indicator's
specified limits before use.
If using the instrument in falling rain or damp conditions, the
operator must use additional protection to avoid the danger from
electric shock due to surface leakage. Select appropriate test
prods and secure with captive ring nuts. The L-shaped test prods
should be oriented in one of four directions using the square
location feature before it is secured.
When changing or adjusting the prods, ensure that both prods
have been disconnected from any source of power or other
equipment.
Always keep your fingers behind the finger guards. Never touch the
exposed metal prod tips.
The different indicating signals of the voltage detector (including
the ELV limit indication) are not to be used for measuring
purposes.
2
3
3. OPERATION
3.1 Control Elements and Connection
A - Instrument body
C - Probe handle
E - L shaped prod
3.2 Description of LED Indicators
400V band
100V band
5
4
A
B
D
E
C
F
A
B
D
E
C
F
B - LED indicator bands
D - Straight prod
F - Switches (MTL20 only)
200V band
50V band
MTL10
MTL20