Model 380353 V1.4 02/05
2
Introduction
Congratulations on your purchase of Extech’s High Voltage Megohmmeter. This meter is
geared toward high voltage insulation testing applications such as appliance testing. In
addition to Megohmmeter (Insulation Resistance) measurements, low resistance and AC
Voltage can be measured. This professional meter, with proper care, will provide years of
safe reliable service.
Safety
1. Circuits under test must be de-energized and isolated before connections are made
(except for voltage measurements).
2. Circuit connections must not be touched during a test. Use extreme caution when
working near bare conductors and bus bars. Accidental contact with conductor could
result in electrical shock.
3. Use caution when working near voltages above 60VDC or 30VACrms.
4. After insulation tests, capacitors must be discharged.
5. Test leads (including alligator clips) must be in good working order, clean and without
broken or cracked insulation.
6. When servicing, use only specified replacement parts.
International Safety Symbols
Caution, refer to this manual before using this meter
Dangerous Voltages
Meter is protected throughout by double or reinforced insulation
Rated Environmental Conditions
•
Indoor use only
•
Installation Category III
•
Pollution degree 2
•
Altitude up to 2000 meters
•
Ambient conditions: Temperature: 32 to 104
o
F (0 to 40
o
C); RH: 80% max.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
