The IR5051 is a compact, lightweight, high-voltage insulation resistance tester capable of outputting up to 5 kV. Its unique measurement technology enables stable measurements of up to 10 TΩ. In addition, the IR5051 is capable of testing the insulation resistance of solar PV systems during power generation, and has a CAT III 2000 V safety rating to allow testing of 2000 V PV systems.
Dedicated Measurement FunctionIn addition to a normal insulation resistance measurement mode, the IR5051 also features a specialized mode for measuring PV insulation resistance.Flexible Voltage RangeEffectively measures 1500 V solar PV systems and is prepared to accommodate systems up to 2000 V as technology advances.Standards ComplianceComplies with IEC 62446-1 for Category 1 and Category 2 tests, ensuring robust safety and performance
Key Features
- Measure solar PV system insulation resistance safely and accurately while generating
- Measure insulation of high-voltage equipment (such as transformers, cables, and motors)
- Wide testing voltage range, up to 5000 V from 250 V DC
- Wide measurement insulation range, up to 10 TΩ
- Automatically calculated and displayed insulation diagnostics (PI, DAR, and DD)
- Data memory functions increase your work efficiency by eliminating human errors from manual reporting.
- Selectable Interface Compatibility: Offers both wireless and USB connectivity options.
- Compact and lightweight, equipped with an IP65-rated carrying case
Basic specifications
Accuracy guaranteed: 1 year
| Measurement parameters | • Insulation resistance • PV insulation resistance • Leakage current • Voltage • Capacitance (DD function) |
|---|---|
| Max. rated voltage to terminals | 1000 V AC, 2000 V DC |
| Max. rated voltage to ground | 1000 V (CAT IV), 600 V (CAT III) |
| Operating temperature and humidity range | -20°C to 50 °C (*1) (no condensation) |
| Storage temperature and humidity range | -25°C to 65°C (-13°F to 149°F), less than 80% RH (no condensation) |
| Dustproof/waterproof | IP40 (with protector attached, excluding terminals) IP65 (CARRYING CASE C0212) |
| Standards | EN61010 (safety), EN61326 (EMC), IEC 61557-1, IEC 61557-2 (Insulation resistance tester) |
| Power supply | • LR6 (AA) alkaline battery × 8 • HR6 (AA) nickel-metal hydride (NiMH) rechargeable battery × 8 |
| Continuous operating time (*2) | Approx. 5 hours without Z3210 installed; approx. 4 hours with Z3210 installed and using wireless communication |
| Dimensions and weight | 195 mm (7.68 in.) W × 254 mm (10 in.) H × 89 mm (3.50 in.) D, 1.7 kg (59.97 oz.) (including batteries) |
| Included accessories | Test lead L9850-01 ×1, Test lead L9850-02 ×1, Test lead L9850-03 ×1, Alligator clip L9851-01 ×1, Alligator clip L9851-02 ×1, Alligator clip L9851-03 ×1, Test pin set L9852 ×1, Carrying Case C0212 ×1, LR6 Alkaline battery ×8, Instruction manual ×1, Operating precautions ×1, Wireless adapter Z3210（IR5051-90 only） |
- *1:-20°C to 40°C (-4°F to 104°F), less than 80% RH , 40°C to 45°C (104°F to 113°F), less than 60% RH , 45°C to 50°C (113°F to 122°F), less than 50% RH
- *2:When using alkaline batteries, 5 kV generated, +/- terminals open, backlight off and comparator off
Functions
| Insulation diagnosis | PI, DAR, DD, SV, Ramp, Timer (*3) |
|---|---|
| Others | Battery charge indicator, live circuit indicator, automatic power save, automatic discharge, backlight, buzzer, manual recording, logging recording, temperature and humidity input, elapsed time display, clock, filter, hardware filter, data-hold, system reset, USB communication (only when DT4900-01 is installed), wireless communication (only when Z3210 is installed), comparator, resistance gauge display, switching of insulation diagnosis function, breakdown cut-off, negative voltage notification |
- *3:Only for can be set in the PV insulation resistance function
PV insulation resistance
| Test voltage range | DC 250 V to 2.00 kV | ||
|---|---|---|---|
| Test voltage presets | 500 V, 1 kV, 1.5 kV | ||
| User-set test voltage | 250 V to 1 kV: in 10 V increments; 1 kV to 2 kV: in 25 V increments | ||
| Test voltage preset | 500 V | 1000 V | 1500 V |
| Guaranteed accuracy range (1) | 0.00 MΩ to 5.00 GΩ ±5% rdg ±5 dgt | 0.00 MΩ to 10.00 GΩ ±5% rdg ±5 dgt | 0.00 MΩ to 20.0 GΩ ±5% rdg ±5 dgt |
| Guaranteed accuracy range (2) | 5.01 GΩ to 100 GΩ ±20% rdg | 10.1 GΩ to 100 GΩ ±20% rdg | 20.1 GΩ to 100 GΩ ±20% rdg |
| Rated current | [Test voltage] / [20 MΩ] | ||
| Open-circuit voltage | From 0% to 10% of test voltage | ||
| Short-circuit current | 2 mA or less | ||
| Possible number of measurements | 1000 times or more on one set of fully-charged batteries | ||
Insulation resistance measurement
| Test voltage range | DC 250 V to 5.20 kV DC | ||||
|---|---|---|---|---|---|
| User-set test voltage | 250 V to 1 kV: in 10 V increments; 1 kV to 5 kV: in 25 V increments | ||||
| Test voltage preset | 250 V | 500 V | 1000 V | 2500 V | 5000 V |
| Guaranteed accuracy range (1) | 0.00 MΩ〜2.50 GΩ ±5% rdg ±5 dgt | 0.00 MΩ〜5.00 GΩ ±5% rdg ±5 dgt | 0.00 MΩ〜10.0 GΩ ±5% rdg ±5 dgt | 0.00 MΩ〜25.0 GΩ ±5% rdg ±5 dgt | 0.00 MΩ〜50.0 GΩ ±5% rdg ±5 dgt |
| Guaranteed accuracy range (2) | 2.51 GΩ〜500 GΩ ±20% rdg | 5.01 GΩ〜1.00 TΩ ±20% rdg | 10.1 GΩ〜2.00 TΩ ±20% rdg | 25.1 GΩ〜5.00 TΩ ±20% rdg | 50.1 GΩ〜10.00 TΩ ±20% rdg |
| Rated current | 1 mA to 1.2 mA | ||||
| Short-circuit current | 2 mA or less | ||||
| Possible number of measurements | 200 times or more on one set of fully-charged batteries | ||||
Leakage current measurement
| Measurement range (auto) | 10 nA | 100 nA | 1000 nA | 10 μA | 100 μA | 1 mA |
|---|---|---|---|---|---|---|
| Display range | 0.00 nA to 9.99 nA | 9.0 nA to 99.9 nA | 90 nA to 999 nA | 0.90 μA to 9.99 μA | 9.0 μA to 99.9 μA | 90 μA to 999 μA (*4) 0.90 mA to 3.00 mA (*5) |
| Resolution | 0.01 nA | 0.1 nA | 1 nA | 0.01 μA | 0.1 μA | *4: 1 μA *5: 0.01 mA |
Voltage measurement
| Guaranteed accuracy range | 30 V to 1,000 V AC (45 Hz to 65 Hz), ±10 V to ±2,000 V DC |
|---|---|
| Accuracy | ±3% rdg. ±3 dgt. |
| Input resistance | 500 kΩ or more (DC, 45 Hz to 65 Hz) |
| Overload protection | 1100 V AC (1 min., between +/- terminals) 2200 V DC (1 min., between +/- terminals) |
Capacitance measurement
Capacitance is automatically measured after insulation resistance measurement is over (not measured if output voltage is 250 V or less)
| Accuracy | ±10% rdg. ±5 nF (guaranteed accuracy range: 10.0 nF to 25.0 µF) | ||
|---|---|---|---|
| Measurement range | 100 nF | 1000 nF | 10 μF |
| Display range | 0.0 nF to 99.9 nF | 100 nF to 999 nF | 1.00 μF to 9.99 μF (*6) 10.0 μF to 25.0 μF (*7) |
| Resolution | 0.1 nF | 1 nF | *6: 0.01 μF *7: 0.1 μF |