Major tech MT1881 IV Інструкція з експлуатації - Сторінка 5
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Note – Examples include switches in the fixed installation and some
equipment for industrial use with permanent connection to the fixed
installation.
OVERVOLTAGE CATEGORY IV
Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the
installation.
Note – Examples include electricity meters and primary over-current
protection equipment
3. SAFETY INSTRUCTIONS
This meter measures AC/DC Voltage, AC/DC Current, Resistance,
Capacitance, Frequency (electrical & electronic), Duty Cycle,Diode Test,
and Continuity. Proper use and care of this meter will provide many years
of reliable service. This meter has been designed for safe use, but must
be operated with caution. The rules listed below must be carefully followed
for safe operation.
1. NEVER apply voltage or current to the meter that exceeds the specified
maximum:
Input Protection Limits
Function
V DC or V AC
mA AC/DC
A AC/DC
Frequency, Resistance,
Capacitance, Duty Cycle, 250VDC/AC RMS
Diode Test, Continuity
2. USE EXTREME CAUTION when working with high voltages.
3. DO NOT measure voltage if the voltage on the "COM" input jack
exceeds 1000V above earth.
4. NEVER connect the meter leads across a voltage source while the
function switch is in the current, resistance, or diode mode. Doing so
can damage the meter.
5. ALWAYS discharge filter capacitors in power supplies and disconnect
the power when making resistance or diode tests.
6. ALWAYS turn off the power and disconnect the test leads before
opening the covers to replace the fuse or batteries.
7. NEVER operate the meter unless the back cover and the battery and
fuse covers are in place and fastened securely.
If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
Maximum Input
1000VDC/AC RMS
800mA 1000V fast acting fuse
10A 1000V fast acting fuse (10A for 30 seconds
max every 15 minutes)
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