INSULATION TESTER IR4053
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
- 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
Model No. (Order Code)
|IR4053-10||Bundled with Test Lead L9787|
What are the problems with conventional insulation testers?
Problems with conventional insulation testers and the 2 measurement methods determined by recognized guidelines
Measurement that does not involve a short-circuit
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.
Measurement that involve a short-circuit
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.
Functions useful in the field
Basic specifications: PVΩ measurement
|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.|
Basic specifications: Insulation resistance measurement
|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|
1st effective measuring range MΩ
0.200 to 10.00
0.200 to 25.0
0.200 to 50.0
0.200 to 500
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.)
|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.)
|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|
L9788 options (4)
Exclusively for the L9788-10/ L9788-11
L9787 options (2)
Exclusively for the L9787 *The L9787 is bundled