HT Instruments HT7051 Manual De Instrucciones página 49

5.3 INSULATION MEASUREMENT IN ADJUST MODE
This function is performed in compliance with IEC/ EN61557-2 guideline. The ADJUST
mode allows the fine adjustment of the test voltage between 100 - 5000VDC.
• The instrument may be used on installations of overvoltage category CAT
IV 600V to earth with maximum voltage 600V between inputs. Do not
connect the instrument to installations with voltages exceeding the limit
values indicated in this manual. If these limit values are exceeded, the
operator may be exposed to electrical shocks and the instrument could get
damaged
• Always connect the measuring leads to the instrument and to the alligator
clips with the accessories disconnected from the system
• We recommend holding the alligator clip respecting the safety area marked
by the hand protection (see § 4.4)
1. Turn on the instrument by pressing the relevant key
Press the FUNC/ERASE MEM key to select the "ADJUST" mode
2.
3. The display shows a screen similar to
that reported here to the side, which
contains:
• The ADJUST function selected
• The bar graph set to zero
• The indication "--- TΩ"
• The test voltage
• The value of the test time
• The plug symbol (if the instrument
is supplied from the mains)
• The
battery
illuminated or flashing (if batteries
are flat or are being recharged)
• The timer symbol if the duration of
the test has been preset
CAUTION
Fig. 5: Instrument connection
symbol steadily
EN - 13
HT7051 - HT7051N