HIOKI IR5051 Advanced Insulation Tester - Precise 10 TΩ Resistance, Wireless Connectivity, & CAT IV Safety

the HIOKI IR5051 Advanced Insulation Tester.

HIOKI IR5051 PV Test Insulation Tester - 1500V / 10 TΩ, Wireless Connectivity | Advanced Safety Features & Precision Testing

HIOKI IR5051 PV Test Insulation Tester – 5kv / 10 TΩ, Wireless Connectivity | Advanced Safety Features & Precision Testing

The HIOKI IR5051 revolutionises PV testing up to 5kv with wireless connectivity (Wireless Adapter Z3210 not included), providing precise insulation resistance measurements and robust safety features for efficient solar system maintenance. This portable tester’s advanced technology ensures reliable performance and seamless data integration.

HIOKI IR5051 Datasheet

Category: Hioki Tag: Insulation Testers

HIOKI IR5051 High Voltage Insulation Tester – Precision Meets Safety

Are you searching for a high-performance insulation resistance tester for your solar PV systems and high-voltage equipment? Look no further than the HIOKI IR5051, engineered to meet the most demanding requirements for accuracy, safety, and versatility. Designed for professionals in the renewable energy and electrical industries, this tester offers unparalleled precision and usability.

Achieve Accurate Results with Advanced Measurement Technology

With a maximum test voltage of 5 kV, the IR5051 precisely measures insulation resistance up to 10 TΩ. This accuracy is achieved through HIOKI’s unique measurement technology, ensuring stable results even under challenging environmental conditions. Whether you are testing transformers, cables, or motors, trust the IR5051 to deliver reliable data every time.

Test Solar PV Systems Efficiently

The IR5051 is a game changer for solar PV system maintenance. While conventional devices require systems to be shut down or tested at night, the IR5051 operates effectively while PV systems are generating power. This capability enhances your efficiency and minimizes downtime, thanks to its PV insulation resistance measurement mode. Safely test solar PV systems up to 2000 V with CAT III 2000 V safety ratings.

User-Friendly Design

Experience intuitive operation with the IR5051’s user-friendly rotary knob. Select from five output voltage settings, adjustable from 250 V to 5 kV, in flexible increments tailored to your specific testing requirements. Its automatic AC/DC detection further simplifies voltage measurement, making your job straightforward and time-efficient.

Enhance Efficiency with Data Memory Functions

The IR5051 streamlines your workflow with robust data memory capabilities, reducing manual reporting errors. This feature enhances your productivity, allowing you to focus on delivering high-quality work without the hassle of paperwork.

Stay Connected with Seamless Interface Options

Choose between wireless or USB connectivity with the IR5051’s selectable interfaces. The compatibility with modern connectivity solutions ensures you can easily integrate the tester into your existing processes, enhancing data management and communication across your operations.

Weatherproof and Portable

Built to withstand harsh environments, the IR5051 comes with an IP65-rated carrying case, ensuring durability and portability. Its compact and lightweight design makes it easy to transport, enabling you to conduct tests wherever required, without compromising on performance or safety.

Detect Ground Faults Swiftly with GENNECT Cross

Prevent potential hazards in solar PV systems using the free GENNECT Cross app. By utilizing the IR5051’s dedicated PV insulation function, you can measure insulation resistance, identify faulty strings, and locate ground faults efficiently, ensuring continuous system integrity and performance.

Advanced Diagnostics and Calculations

The IR5051 is engineered for those who require meticulous insulation testing. It boasts tailored measurement methods with sophisticated diagnostic functions, allowing users to prevent insulation breakdown by selecting the optimal test voltage. With the ability to automatically calculate and display pivotal insulation metrics such as the Polarization Index (PI), Dielectric Discharge (DD), and Dielectric Absorption Ratio (DAR), it goes beyond basic resistance and leakage assessments, offering you a comprehensive pass/fail judgment with ease.

Uncompromising Safety and High-Safety Design

Understanding the inherent risks associated with high voltage testing, the IR5051 is rated CAT III and CAT IV, representing the highest safety standards in its class. Contrary to common perception, insulation resistance measurement can be perilous, but with this model, enhanced safety measures are in place to mitigate such risks. The IR5051’s intuitive design includes a Start button that must be pressed for a second to initiate tests—preventing accidental high voltage activation. Additionally, its smart alert system features a flashing MEASURE button to caution when voltage is either generated or discharged.

Seamless Connectivity and Enhanced Functionality

Connectivity is key in today’s fast-paced environment. The IR5051 supports wireless communication through the optional Wireless Adapter Z3210, enabling seamless data transfer to your devices via Bluetooth®. This innovation facilitates the storage and analysis of results directly on your smartphone or tablet, increasing efficiency and improving workflow.

Trust in Standards Compliance

The IR5051 complies with IEC 62446-1 for Category 1 and Category 2 tests, adhering to international standards to ensure safety and performance. Gain peace of mind knowing that you are using a tool that meets industry requirements, safeguarding your projects and team.

Elevate your insulation testing capabilities with the HIOKI IR5051, a professional-grade insulation tester that combines precision, ease of use, and cutting-edge technology. Invest in quality, safety, and efficiency—get the HIOKI IR5051 today and experience the future of high-voltage testing.

Specifications

Basic specifications

Accuracy guaranteed: 1 year

Measurement parameters	• Insulation resistance • PV insulation resistance • Leakage current • Voltage • Capacitance (DD function)
Max. rated voltage to terminals	1000 V AC, 2000 V DC
Max. rated voltage to ground	1000 V (CAT IV), 600 V (CAT III)
Operating temperature and humidity range	-20°C to 50 °C (*1) (no condensation)
Storage temperature and humidity range	-25°C to 65°C (-13°F to 149°F), less than 80% RH (no condensation)
Dustproof/waterproof	IP40 (with protector attached, excluding terminals) IP65 (CARRYING CASE C0212)
Standards	EN61010 (safety), EN61326 (EMC), IEC 61557-1, IEC 61557-2 (Insulation resistance tester)
Power supply	• LR6 (AA) alkaline battery × 8 • HR6 (AA) nickel-metal hydride (NiMH) rechargeable battery × 8
Continuous operating time (*2)	Approx. 5 hours without Z3210 installed; approx. 4 hours with Z3210 installed and using wireless communication
Dimensions and weight	195 mm (7.68 in.) W × 254 mm (10 in.) H × 89 mm (3.50 in.) D, 1.7 kg (59.97 oz.) (including batteries)
Included accessories	Test lead L9850-01 ×1, Test lead L9850-02 ×1, Test lead L9850-03 ×1, Alligator clip L9851-01 ×1, Alligator clip L9851-02 ×1, Alligator clip L9851-03 ×1, Test pin set L9852 ×1, Carrying Case C0212 ×1, LR6 Alkaline battery ×8, Instruction manual ×1, Operating precautions ×1, Wireless adapter Z3210（IR5051-90 only）

*1:-20°C to 40°C (-4°F to 104°F), less than 80% RH , 40°C to 45°C (104°F to 113°F), less than 60% RH , 45°C to 50°C (113°F to 122°F), less than 50% RH
*2:When using alkaline batteries, 5 kV generated, +/- terminals open, backlight off and comparator off

Functions

Insulation diagnosis

PI, DAR, DD, SV, Ramp, Timer (*3)

Others

Battery charge indicator, live circuit indicator, automatic power save, automatic discharge, backlight, buzzer, manual recording, logging recording, temperature and humidity input, elapsed time display, clock, filter, hardware filter, data-hold, system reset, USB communication (only when DT4900-01 is installed), wireless communication (only when Z3210 is installed), comparator, resistance gauge display, switching of insulation diagnosis function, breakdown cut-off, negative voltage notification

*3:Only for can be set in the PV insulation resistance function

PV insulation resistance

Test voltage range	DC 250 V to 2.00 kV
Test voltage presets	500 V, 1 kV, 1.5 kV
User-set test voltage	250 V to 1 kV: in 10 V increments; 1 kV to 2 kV: in 25 V increments
Test voltage preset	500 V	1000 V	1500 V
Guaranteed accuracy range (1)	0.00 MΩ to 5.00 GΩ ±5% rdg ±5 dgt	0.00 MΩ to 10.00 GΩ ±5% rdg ±5 dgt	0.00 MΩ to 20.0 GΩ ±5% rdg ±5 dgt
Guaranteed accuracy range (2)	5.01 GΩ to 100 GΩ ±20% rdg	10.1 GΩ to 100 GΩ ±20% rdg	20.1 GΩ to 100 GΩ ±20% rdg
Rated current	[Test voltage] / [20 MΩ]
Open-circuit voltage	From 0% to 10% of test voltage
Short-circuit current	2 mA or less
Possible number of measurements	1000 times or more on one set of fully-charged batteries

Insulation resistance measurement

Test voltage range	DC 250 V to 5.20 kV DC
User-set test voltage	250 V to 1 kV: in 10 V increments; 1 kV to 5 kV: in 25 V increments
Test voltage preset	250 V	500 V	1000 V	2500 V	5000 V
Guaranteed accuracy range (1)	0.00 MΩ〜2.50 GΩ ±5% rdg ±5 dgt	0.00 MΩ〜5.00 GΩ ±5% rdg ±5 dgt	0.00 MΩ〜10.0 GΩ ±5% rdg ±5 dgt	0.00 MΩ〜25.0 GΩ ±5% rdg ±5 dgt	0.00 MΩ〜50.0 GΩ ±5% rdg ±5 dgt
Guaranteed accuracy range (2)	2.51 GΩ〜500 GΩ ±20% rdg	5.01 GΩ〜1.00 TΩ ±20% rdg	10.1 GΩ〜2.00 TΩ ±20% rdg	25.1 GΩ〜5.00 TΩ ±20% rdg	50.1 GΩ〜10.00 TΩ ±20% rdg
Rated current	1 mA to 1.2 mA
Short-circuit current	2 mA or less
Possible number of measurements	200 times or more on one set of fully-charged batteries

Leakage current measurement

Measurement range (auto)	10 nA	100 nA	1000 nA	10 μA	100 μA	1 mA
Display range	0.00 nA to 9.99 nA	9.0 nA to 99.9 nA	90 nA to 999 nA	0.90 μA to 9.99 μA	9.0 μA to 99.9 μA	90 μA to 999 μA (4) 0.90 mA to 3.00 mA (5)
Resolution	0.01 nA	0.1 nA	1 nA	0.01 μA	0.1 μA	4: 1 μA 5: 0.01 mA

Voltage measurement

Guaranteed accuracy range	30 V to 1,000 V AC (45 Hz to 65 Hz), ±10 V to ±2,000 V DC
Accuracy	±3% rdg. ±3 dgt.
Input resistance	500 kΩ or more (DC, 45 Hz to 65 Hz)
Overload protection	1100 V AC (1 min., between +/- terminals) 2200 V DC (1 min., between +/- terminals)

Capacitance measurement

Capacitance is automatically measured after insulation resistance measurement is over (not measured if output voltage is 250 V or less)

Accuracy	±10% rdg. ±5 nF (guaranteed accuracy range: 10.0 nF to 25.0 µF)
Measurement range	100 nF	1000 nF	10 μF
Display range	0.0 nF to 99.9 nF	100 nF to 999 nF	1.00 μF to 9.99 μF (6) 10.0 μF to 25.0 μF (7)
Resolution	0.1 nF	1 nF	6: 0.01 μF 7: 0.1 μF

Features

2000 V solar power system compatible

Measure insulation resistance while the solar PV system continues to generate

The CAT III 2000 V and CAT IV 1000 V rated IR5051 can measure insulation resistance and open-circuit voltage in solar power systems up to 2000 V safely.

The IR5051 has a PV insulation resistance measurement function. It features the ability to measure even while PV systems are generating power. This means you don’t have to wait until night for measurement or stop power generation.

Identify ground faults in solar power systems using our free app, GENNECT Cross

The CAT III 2000 V and CAT IV 1000 V rated IR5051 can measure insulation resistance and open-circuit voltage in solar power systems up to 2000 V safely.

1.Use the IR5051’s dedicated PV insulation function to measure the insulation resistance of solar strings during operation and detect faulty strings.
2.Measure the voltage at the disconnect switch and send it to GENNECT Cross; the software will locate the panel with the ground fault. This IR5051 is capable of safely and accurately measuring voltages up to 2,000 V DC.

Accurate, easy-to-use insulation resistance meter

Intuitive and precise high-voltage insulation testing

Easy-to-use insulation resistance meter with intuitive rotary knob operation.

Selectable output voltage with 5 range settings for insulation resistance testing.
Adjust the output voltage between 250 V and 5 kV in increments of 10 V or 25 V to accommodate specific testing needs.
Automatic AC/DC detection for seamless voltage measurement.

Precision stability in high voltage insulation testing

When the test object has very high resistance, the insulation resistance meter measures minute currents. Because such measurements are sensitive to even minor changes in the environment, the readings can become unstable. The IR5051 reduces environmental influences using shielded wires, and its unique measurement technology enables stable measurements up to 10 TΩ.

Advanced diagnostics and calculations in insulation testing

Tailored measurement methods with advanced insulation diagnostic functions

When a high test voltage is continuously applied to the circuit under test, the insulation may break down. Failures caused by the application of a high voltage can be prevented by keeping the applied voltage as low as possible while testing the insulation.

The IR5051 is equipped with various insulation diagnostic functions, allowing you to choose the optimal measurement method according to the testing application.

Automatically calculated and displayed insulation diagnostics

After measurement completes, the instrument can display more than just the insulation resistance and leakage current, but also judgement index values of PI, DD, and DAR. It calculates these indexes based on the measured values and displays it as a pass/fail judgment.

Safety engineered

High-Safety design insulation resistance meter

CAT III, CAT IV rated IR5051 hold the highest standards in safety performance. You may think that insulation resistance measurement is not dangerous because it is performed under power outage conditions, but on the contrary, accidents can be dangerous. The IR5051 have enhanced safety performance in case of such an accident.

Start test: Press and hold for 1 sec. to start measurement. This feature helps prevent inadvertent activation of a high voltage.
To encourage caution, the MEASURE button flashes when a high voltage is being generated or discharged.

Complete: The IR5051 will start discharging automatically as soon as the test is over. During this time, the test start button will flash red to indicate that it is discharging.

Wireless and USB connectivity options for even greater convenience

Wireless support(*1)

*1:The optional Wireless Adapter Z3210 is required.

Installing the Wireless Adapter Z3210 on the instrument enables Bluetooth® wireless communication, facilitating the transfer of measurements to your smartphone or tablet.

Enhance your insulation resistance meter with GENNECT Cross

A time-series graph of the current provides a visualization of the insulation state of a high-voltage cable. Utilize the logging function of GENNECT Cross to generate time-series graphs of data recorded at one-second intervals, enhancing the analysis and understanding of trends.
Field Maintenance function: Using a picture of the site, this function can display the measurement values where the measurements are made.
Report function: Easily create PDF reports with measurement results.

See here for details about GENNECT Cross

Excel® Direct Input Function

Boost work efficiency in the field by letting you directly transfer measurement data to (i.e., enter measured values directly into) templates created as Excel®.

See details about Wireless Adapter Z3210

Transfer data via USB after measurement

Transfer measured values and logging data saved on the instrument to a PC via USB (*2). This function requires Sequence Maker, a free Excel add-in.

See details about Sequence Maker

*2:DMM Communicator DT4900-01 is required (sold separately).

Rugged protection

Dustproof & waterproof case for outdoor work

The Carrying Case C0212 is a rigid case with IP65 dust and water protection. It provides space for the insulation resistance meter and test leads so that they can be transported easily.