Service Manual UTG1000X Series
Instruments.uni-trend.com
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Safety Signs
Danger
Indicates a warning of a possible electric shock hazard that could
result in personal injury or death.
Warning
Indicates a point requiring caution, which may result in personal
injury or damage to the instrument.
Caution
Indicates a potentially hazardous condition that requires following a
procedure or condition that may damage the instrument or other
equipment; if a "Caution" sign is indicated, all conditions must be met
before continuing to operate.
Notice
Indicates a potential problem, a procedure, or a condition that needs
to be followed, which may cause the instrument to function
improperly; if the "Caution" mark is marked, all conditions must be
met to ensure that the instrument can function normally.
Alternate
current
Instrument AC, please confirm the regional voltage range.
Direct current
Instrument direct current, please confirm the regional voltage range.
Grounding
Frame, chassis ground terminal.
Grounding
Protective earth terminal.
Grounding
Measure the ground terminal.
Close
The main power is off.
Open
The main power is turned on.
Power supply
Standby power, when the power switch is turned off, the instrument
is not completely disconnected from the AC power source.
CAT I
A secondary electrical circuit connected to a wall socket through a
transformer or similar device, such as electronic equipment.
Electronic equipment with protective measures, any high-voltage
and low-voltage circuits, such as copiers inside the office, etc.
CAT II
CATII: The primary electrical circuit of electrical equipment
connected to the indoor socket through the power cord, such as
mobile tools, home appliances, etc. Household appliances, portable
tools (electric drills, etc.), household sockets, and sockets that are
more than 10 meters away from Category III lines or 20 meters away
from Category IV lines.
CAT III
Primary circuits of large equipment directly connected to the
distribution panel and circuit connections between the distribution
panel and socket outlets (three-phase distribution circuits including
individual commercial lighting circuits). Equipment with fixed
positions, such as multi-phase motors, and multi-phase gate boxes;
lighting equipment and lines inside large buildings; machine tools and
power distribution panels at industrial sites (workshops), etc.
