Hioki insulation testers or megohmmeters feature all-in-one designs including built-in rugged cases and test lead storage compartments. The 3490 is a 3-range, 250/500/1000V analog insulation resistance meter with efficient functions and features to help shorten work time associated with field insulation testing. CAT III 600 V
Key Features • 3-range testing voltage of 250/500 V (insulation resistance testing up to 100 M¥Ø), and 1000 V (insulation testing up to 4000 M¥Ø) • Continuity check at 3 ¥Ø range via 200 mA testing • Bright LED luminous scale • Check for live circuits and battery status
Rated output voltage | 250 V DC | 500 V DC | 1000 V DC |
---|---|---|---|
Effective maximum indicated value | 100 M¥Ø | 100 M¥Ø | 4000 M¥Ø |
Accuracy 1st effective measuring range | ¡¾2 % of scale length 0.05 to 50 M¥Ø | ¡¾2 % of scale length 0.05 to 50 M¥Ø | ¡¾2 % of scale length 2 to 1000 M¥Ø |
Lower limit resistance | 0.25 M¥Ø | 0.5 M¥Ø | 1 M¥Ø |
(Measurement resistance value to maintain testing voltage) | |||
Overload protection | 660 V AC (10 sec.) | ||
Low resistance | 3 ¥Ø (at 200 mA testing current), ¡¾0.09 ¥Ø accuracy, 30 ¥Ø (at 20 mA testing current), ¡¾0.9 ¥Ø accuracy, Open-circuit voltage: 4.1 to 6.9 V | ||
AC voltage measurement | 0 to 600 V (50/60 Hz), ¡¾5 % of maximum scale value accuracy, 100 k¥Ø or more input resistance | ||
Other functions | Bright LED luminous scale, Drop proof (on concrete, 1 m/1 time), Battery check, Live circuit check, Auto discharge | ||
Power supply | LR6 (AA) alkaline batteries ¡¿4, Continuous use: 20 hours (at 500 V range, no load) | ||
Dimensions and mass | 159 mm (6.26 in)W ¡¿ 177 mm (6.97 in)H ¡¿ 53 mm (2.09 in)D, 610 g (21.5 oz), (including battery, excluding test lead) | ||
Accessories | Test lead L9787 ¡¿1, Instruction manual ¡¿1, Shoulder strap ¡¿1, LR6 (AA) alkaline batteries ¡¿4 |