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Hioki insulation resistance testers or megohmmeters feature all-in-one designs including built-in rugged cases and test lead storage compartments. The IR3455 is a 5-range, 250V to 5000V digital insulation resistance tester offering up to 10TΩ of insulated resistance testing. High performance features include bargraph, built-in memory, leak current and voltage testing, and DAR and PI calculation capabilities to help shorten work time associated with field insulation testing. Key Features • Measure insulation of high-voltage equipment (such as transformers, cables, and motors) • Wide testing voltage range, up to 5.00 kV from 250 V DC • Wide measurement insulation range, up to 10 TΩ • PI (Polarization Index) and DAR (Dielectric Absorption Ratio) automatically calculated / display • Data memory function to reduce handwritten notes • Bright LED luminous scale • Extended operating temperature range of -10 ℃ to 50 ℃
| Test voltage | 250 V to 5.00 kV DC, (Possible in 25 V steps between 250 V and 1 kV and in 100 V steps between 1 and 5 kV) |
|---|---|
| Measurement range | 0.00 MΩ to 500 GΩ (250 V) 0.00 MΩ to 1.00 TΩ (500 V) 0.00 MΩ to 2.00 TΩ (1 kV) 0.00 MΩ to 5.00 TΩ (2.5 kV) 0.00 MΩ to 10.0 TΩ (5 kV) |
| Measurement current | 1 mA (Test voltage 250 V to 1.00 kV), 0.5 mA (Test voltage 1.10 kV to 2.50 kV) 0.25 mA (Test voltage 2.60 kV to 5.00 kV), Short-circuit current: 2 mA or less |
| Resistance range | 10 MΩ to 10 TΩ, 7 ranges (auto range) |
| Accuracy | ±5% rdg. ±5 dgt. Up to [Test voltage (setting value)/Resistance measurable at 100 nA] ±20% rdg. ±5 dgt. [Test voltage (setting value)/Resistance measurable at 100 nA] to [Test voltage (setting value)/Resistance measurable at 1 nA] or 500 GΩ ±30% rdg. ±50 dgt. [Test voltage (setting value)/Resistance measurable at 1 nA] or 501 GΩ to 9.99 TΩ |
| Leakage current measurement | 1.00 nA to 1.20 mA, 6 ranges (current measurement that occurs when test voltage is generated) Accuracy ±2.5% rdg. ±5 dgt. (1 mA range); refer to complete catalog for other ranges |
| Voltage measurement | ±50 V to ±1.00 kV DC, 50 V to 750 V AC (50/60 Hz), Accuracy: ±5 % rdg. ±5 dgt. , Input resistance: Approx. 10 MΩ |
| Temperature measurement | -10.0 ˚C to 70.0 ˚C, 3 ranges (used with optional sensor) Accuracy ±1.0 ˚C (0.0 ˚C to 40.0 ˚C); refer to complete catalog for other ranges |
| Other functions | Insulation Diagnosis (Temperature compensation, PI/DAR display, Step voltage test), Data memory, Communication (USB 2.0, PC application software), auto discharge, hot conductor warning indication, etc. |
| Display | Digital LCD, max. 999 dgt. with backlight, Bar graph display |
| Power supply | LR6 (AA) alkaline batteries ×6, Battery pack 9459, or AC adapter 9753 or 9418-15 (100 - 240 VAC) Continuous use : [LR6] 5 hr, [9459] 9 hr, (Occur 5 kV, +/- open terminal) |
| Dimensions and mass | 260 mm (10.24 in)W × 250.6 mm (9.87 in)H × 119.5 mm (4.70 in)D, 2.8 kg (98.8 oz) |
| Accessories | Test lead 9750-01 ×1, Test lead 9750-02 ×1, Test lead 9750-03 ×1, Alligator clip 9751-01 ×1, Alligator clip 9751-02 ×1, Alligator clip 9751-03 ×1, Instruction manual ×1, LR6 (AA) alkaline batteries ×6, USB cable ×1, PC application software (CD-R) ×1 |
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