Hioki IR4053 INSULATION TESTER
Measure PV Insulation Resistance Safely, Accurately and Quickly
Key Features and Functions
- Safely and accurately measure PV insulation resistance even while generating solar power
- Built-in PV dedicated function, display measurements in 4 seconds
- Five ranges (50/125/250/500/1000V) built in for normal insulation resistance measurement
- Built-in 1000 VDC voltage measurement for open voltage tests of PV systems that support 1000 V
- Built-in comparator function
- Drop proof design withstands drop onto concrete from a height of 1 meter
Documents and Software:
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.
Basic specifications: PVΩ measurement
Accuracy guaranteed: 1 year
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. | 0.200 to 1000 MΩ / ±4% rdg. |
Other measuring range / Accuracy | 0 to 0.199 MΩ / ±2% rdg. ±6 dgt. | |
Basic specifications: Insulation resistance measurement
Accuracy guaranteed: 1 year
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 | ±4% rdg. | ±4% rdg. | ±4% rdg. | ±4% rdg. | ±4% rdg. |
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, | ||||
AC voltage range | 420 V (0.1 V resolution)/600 V (1 V resolution), 2 ranges, 50/60 Hz, | ||||
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 | ||||
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.
Basic specifications: PVΩ measurement
Accuracy guaranteed: 1 year
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. | 0.200 to 1000 MΩ / ±4% rdg. |
Other measuring range / Accuracy | 0 to 0.199 MΩ / ±2% rdg. ±6 dgt. | |
Basic specifications: Insulation resistance measurement
Accuracy guaranteed: 1 year
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 | ±4% rdg. | ±4% rdg. | ±4% rdg. | ±4% rdg. | ±4% rdg. |
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, | ||||
AC voltage range | 420 V (0.1 V resolution)/600 V (1 V resolution), 2 ranges, 50/60 Hz, | ||||
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 | ||||

