Measure PV Insulation Resistance Safely, Accurately and Quickly
The Hioki IR4053 is a digital insulation resistance tester for photovoltaic generation systems. Measure insulation resistance accurate and safely without being affected by generated solar power and identify the value in just 4 seconds.
CAT III 600 V
The Hioki IR4053 features a photovoltaic resistance function for measuring solar power systems, allowing you to measure insulation resistance accurately without shorting strings of photovoltaic cells and without risking accidents such as arc discharge events, even as the system continues to generate electricity during daylight hours.
| IR4053-10 | Bundled with Test Lead L9787 |
|---|
This video shows the measurement flow of the PV system insulation resistance using the IR4053.
The IR4053, which was designed for PV, can accurately measure insulation resistance without being affected by the generating PV.
Normally, to accurately measure the insulation resistance of a generating PV, one needs to short the measured circuit. With the IR4053's PV measurement mode, short circuiting is not necessary.
The IR4053 displays the measured value just 4 seconds after starting measurement. After the first display, the displayed value is updated each second. Comfortably carry out swift measurements.
Problems with conventional insulation testers and the 2 measurement methods determined by recognized guidelines
This is not as dangerous, but depending on the circuit status, the measurement may be affected by the generating PV and may produce a result different from the actual insulation resistance.
To accurately measure a generating PV, one needs to short the measured circuit, which requires that a short-circuit switch be separately installed. Short-circuiting will also pose the danger of creating an arc. In addition, to minimize hazards, it is recommended that the testing be conducted at night.
You can compare measurements to any set values. If the result does not meet the set value, the red light will warn of nonconformance.
This allows you to apply output voltage with the switch in your hand, work with a light, and see the result of the comparator with an LED.
The sturdy design will not break even if dropped onto concrete from 1 m, so you
can use it with peace of mind.
| Rated output voltage | 500 V DC | 1000 V DC |
|---|---|---|
| Effective maximum indicated value | 2000 MΩ | 4000 MΩ |
| Measuring range/ Accuracy | 0.200 to 500 MΩ / ±4% rdg. 501 to 2000 MΩ / ±8% rdg. |
0.200 to 1000 MΩ / ±4% rdg. 1010 to 4000 MΩ / ±8% rdg. |
| Other measuring range / Accuracy | 0 to 0.199 MΩ / ±2% rdg. ±6 dgt. | |
| Rated output voltage | 50 V DC | 125 V DC | 250 V DC | 500 V DC | 1000 V DC | |
|---|---|---|---|---|---|---|
| Effective maximum indicated value | 100 MΩ | 250 MΩ | 500 MΩ | 2000 MΩ | 4000 MΩ | |
| Accuracy 1st effective measuring range MΩ |
±4% rdg. 0.200 to 10.00 |
±4% rdg. 0.200 to 25.0 |
±4% rdg. 0.200 to 50.0 |
±4% rdg. 0.200 to 500 |
±4% rdg. 0.200 to 1000 |
|
| Lower limit resistance | 0.05 MΩ | 0.125 MΩ | 0.25 MΩ | 0.5 MΩ | 1 MΩ | |
| Overload protection | 600 V AC (10 s) | 600 V AC (10 s) | 600 V AC (10 s) | 600 V AC (10 s) | 1200 V DC (10 s) | |
| DC voltage range | 4.2 V (0.001 V resolution) to 1000 V (1 V resolution), 4 ranges, Accuracy: ±1.3% rdg. ±4 dgt., (Ranges in excess of 1000 V are not guaranteed for accuracy.) |
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| AC voltage range | 420 V (0.1 V resolution)/600 V (1 V resolution), 2 ranges, 50/60 Hz, Accuracy: ±2.3% rdg. ±8 dgt., (Ranges in excess of 600 V are not guaranteed for accuracy.) |
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| Display | Semi-transmissive FSTN LCD with back lighting, Backlight | |||||
| Response time | Insulation resistance range: 1 second, PVΩ function: 4 seconds (based on in-house tests) | |||||
| Other functions | Live circuit indicator, automatic electric discharge, automatic DC/AC detection, comparator, drop proof, auto power save | |||||
| Power supply | AA alkaline batteries (LR6) ×4, Continuous operating time: Approx. 20 hours (based on in-house tests) | |||||
| Dimensions and mass | 159 mm (6.26 in) W × 177 mm H (6.97 in) H × 53 mm (2.09 in) D, Approx. 600 g (21.2 oz) (including batteries, excluding test lead) | |||||
| Included accessories | TEST LEAD L9787 ×1, Neck strap ×1, Instruction manual ×1, AA alkaline batteries (LR6) ×4 | |||||
