11
12
IV. Electrical Symbols
CAT IV
DC
AC
11
12
13
14
7
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
10
Risk of electric shock
Double-insulated or insulation-enhanced
Direct Current
Alternating Current
Grounding
Warning
Battery voltage
It is applicable to test and measuring circuits connected at the
source of the building’s low-voltage MAINS installation
V. External Structure
Battery charging port
Selection switch for charging and testing modes
LINE: High-voltage output outlet (dual-plug red lead)
LINE: Outlet for shielding high-voltage lead (dual-plug red lead)
GUARD: Grounding protection outlet (single-plug green lead)
EARTH: High resistance measurement outlet (single-plug black lead)
LCD segmented display screen
Functional buttons
USB port
Carrying strap location
Dual-plug high-voltage test lead (red)
High resistance sampling test lead (black)
Protective test lead (green)
Lithium battery charger
VI. Button Description
Insulation resistance measurement mode
Power on/off
Increase; select high range or previous group of data
Decrease; adjust time and resistance; cyclically display
Decrease, select low range or next group of data
Fig. 5.1 External structure
Fig. 6.1 UT512D Functional buttons
UT512D/E User Manual
UT512D/E User Manual
DC voltage measurement mode
AC voltage measurement mode
