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The Hioki IR4053 Insulation Tester is an essential tool for solar panel engineers who need to accurately measure insulation resistance. This digital tester was designed specifically for photovoltaic systems, giving you the accurate results you need in just 4 seconds.
The Hioki IR4053 Insulation Tester is an invaluable tool for photovoltaic systems, allowing you to measure insulation resistance without being affected by generated solar power and identify the value in just 4 seconds.
It features a photovoltaic resistance function that can safely and accurately measure PV insulation resistance even while generating solar power.
Using normal methods, short-circuiting is usually needed when measuring a generating PV to get an accurate result; however, with the IR4053’s PV measurement mode, this is not necessary. Thanks to its special designed specs it can still provide precise measurements without being affected by generated power that would normally interfere with traditional insulation testers.
The five ranges (50/125/250/500/1000V) make it easy to perform normal insulation resistance measurements. Furthermore, it has a built-in 1000 VDC voltage measurement for open voltage tests of PV systems that support 1000 V as well as a comparator function and drop-proof design that withstands drops onto concrete from 1 meter high.
With its ease of use and wide range of functions, the Hioki IR4053 Insulation Tester is an indispensable tool for photovoltaic generation system applications.
This video shows the measurement flow of the PV system insulation resistance using the IR4053.
Weight | 1 kg |
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Rated output voltage | 500 V DC | 1000 V DC |
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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 | |
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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 |
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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 |
Accurate and safe measurement without creating shorts
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.
Displays measurement in 4 seconds
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 of values. If the result does not meet the set value, the red light will warn of non-conformance.
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
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