Triplett MM650 - International Safety Symbols; Safety Category Ratings

International Safety Symbols
Potential danger. Indicates the user must refer to the manual for important safety information
Indicates hazardous voltages may be present
Equipment is protected by double or reinforced insulation
MAX
Indicates the terminal(s) so marked must not be connected to a circuit where the
1000V
voltage with respect to earth ground exceeds the maximum safety rating of the meter
Safety Category Ratings
Category Rating
Brief Description
Typical Applications
CAT II
Single phase receptacles
- Household appliances, power tools
and connected loads
- Outlets more than 30ft (10m) from a CAT III source
- Outlets more than 60ft (20m) from a CAT IV source
CAT III
Three phase circuits and
- Equipment in fixed installations such as 3-phase
single phase lighting
motors, switchgear and distribution panels
circuits in commercial
- Lighting circuits in commercial buildings
buildings
- Feeder lines in industrial plants
- Any device or branch circuit that is close to a CAT III source
CAT IV
Connection point to
- Primary distribution panels
utility power and outdoor
- Overhead or underground lines to detached buildings
conductors
- Incoming service entrance from utility
- Outdoor pumps
The measurement category (CAT) rating and voltage rating is determined by a combination of the meter, test probes
and any accessories connected to the meter and test probes. The combination rating is the LOWEST of any individual
component.
IP67 Rating
NOTE: Meter is waterproof and dust tight
with supplied plugs or test leads inserted
into input jacks.
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