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.

Key Features:

• 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 1000V.
• Built-in comparator function.
• Drop proof design withstands drop onto concrete from a height of 1 meter.
• 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.

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. 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.

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 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)

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.

What's Included In This Package:

• 1x Test Lead (L9787)
• 1x Neck strap
• 1x Instruction manual
• 4x AA alkaline batteries (LR6)

 

Measurement not affected by generating PV The IR4053, which was designed for PV, can accurately measure insulation resistance without being affected by the generating PV.

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.

Comparator function/ Red light You can compare measurements to any set values. If the result does not meet the set value, the red light will warn of nonconformance.

Test lead with remote switch 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.

Drop proof The sturdy design will not break even if dropped onto concrete from 1 m, so you can use it with peace of mind.

Please Note that Product may differ eg. colour, size from the product Image displayed on website. Kindly check the specifications provided to make better purchase decision. M.R.P Prices and specifications are subject to change without notice.