User’s Manual Series DC Electronic Load
Instruments.uni-trend.com
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DC
Direct current device. Please check the region’s voltage range.
Grounding
Frame and chassis grounding terminal
Grounding
Protective grounding terminal
Grounding
Measurement
grounding termina
OFF
Main power off
ON
Main power on
Power Supply
Standby power supply: when the power switch is turned off, this
device is not completely disconnected from the AC power
supply.
CAT I
Secondary electrical circuit connected to wall sockets through transformers or
similar equipment, such as electronic instruments and electronic equipment;
electronic equipment with protective measures, and any high-voltage and low-
voltage circuits, such as the copier in the office.
CAT II
Primary electrical circuit of the electrical equipment connected to the indoor socket
via the power cord, such as mobile tools, home appliances, etc. Household
appliances, portable tools (e.g. electric drill), household sockets, sockets more than
10 meters away from CAT III circuit or sockets more than 20 meters away from CAT
IV circuit.
CAT III
Primary circuit of large equipment directly connected to the distribution board and
circuit between the distribution board and the socket (three-phase distributor
circuit includes a single commercial lighting circuit). Fixed equipment, such as
multi-phase motor and multi-phase fuse box; lighting equipment and lines inside
large buildings; machine tools and power distribution boards at industrial sites
(workshops).
CAT IV
Three-phase public power unit and outdoor power supply line equipment.
Equipment designed to “initial connection”, such as power distribution system of
power station, power instrument, front-end overload protection, and any outdoor
transmission line.
Certificatio
n
CE indicates a registered trademark of EU.
Certificatio
n
UKCA indicates a registered trademark of UK.
Certificatio
n
ETL indicates a registered trademark of Intertek. It conform to UL
STD 61010-1 and 61010-2-030, CSA STD C22.2 No.61010-1 and 61010-2-
030.
Waste
This product complies with the marking requirements of WEEE
Directive (2002/96/EC). This additional label indicates that this
electrical / electronic product must not be discarded in household
waste.
