Major tech MT874 Instrukcja obsługi - Strona 5
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1.3. Input Limits
Voltage AC or DC
Resistance, Continuity
mA DC or mA AC
A DC or A AC
• When the measured voltage or current exceeds the range, the buzzer will
continue to sound as a warning of exceeding the range.
1.4. Safety Category Ratings
Category Rating
CAT II
CAT III
• 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.
1.5. Test Leads
Insulated Tip On
Insulated Tip Removed
WARNING: Operation is limited to CAT II applications when the insulated tips
are removed from one or both test probes. Refer to Input Limits section in this
manual for maximum voltage ratings.
600 V AC/DC, 200Vrms on 200mV range
250 Vrms for 15 sec max
200mA 600V fast acting fuse
10A 600V fast acting fuse (30 seconds max
every 15 minutes)
Brief Description
Single phase
receptacles and
connected loads
Three phase circuits
and single phase
lighting circuits in
commercial buildings
CAT IV 600V
CAT III 1000V
Typical Applications
• Household appliances, power
tools
• Outlets more than 30ft (10m)
from a Cat III source
• Outlets more than 60ft (20m)
from a Cat IV source
• Equipment in fixed installations
such as 3- phase motors, switch
gear and distribution panels
• Lighting circuits in commercial
buildings
• Feeder lines in industrial plants
• Any device or branch circuit that
is close to a Cat III source
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