Australia’s solar sector has grown dramatically. Utility-scale and commercial rooftop installations operating at 1000 V and above are now the norm, with 1500 V DC string systems increasingly common on large ground-mount and commercial-scale arrays.

The challenge? Most general-purpose clamp meters and multimeters are rated to CAT II or CAT III 1000 V — meaning they simply aren’t equipped for the transient overvoltages that can occur in these higher-voltage environments.

Using an under-rated instrument on a high-voltage PV array isn’t just a compliance issue — it’s a genuine electrocution risk. IEC 61730-1 (the standard for PV module safety qualification) explicitly classifies solar installations as Measurement Category III environments. If your instrument doesn’t match the category and voltage of the site, you’re working outside its safe operating envelope.

That’s the problem the HIOKI P2010 DC High Voltage Probe was designed to solve.

What the HIOKI P2010 Does

The P2010 is a DC high voltage probe accessory that plugs directly into compatible HIOKI clamp meters and digital multimeters via standard 4 mm banana terminals. Once connected, it upgrades the instrument’s measurement capability to CAT III 2000 V DC — pushing the voltage ceiling well beyond what most standalone meters can handle.

It works by scaling the input voltage through a precision 20 MΩ resistive divider network, delivering a proportionally reduced output signal to the connected meter. Depending on the instrument, the P2010 operates in either “DC High V Probe Mode” (for compatible clamp meters like the CM4373-50 and CM4375-50, and the DT4261 DMM) or “1/10 output rate mode” (for other compatible HIOKI DMMs).

The key point: the probe does the heavy lifting — handling the dangerous high-voltage input — while the meter simply reads the scaled output. The result is a measurement chain that’s safe, compliant, and accurate at voltages your standard test leads can’t touch.

Built for Australian Solar Professionals

For solar installers and commissioning engineers working to AS/NZS 5033 (Installation and Safety Requirements for PV Arrays) and IEC 62446-1 (Grid-Connected PV Systems — Minimum Requirements for Documentation, Commissioning Tests and Inspection), correct instrument categorisation is a fundamental requirement.

The P2010’s CAT III 2000 V rating satisfies the overvoltage category requirements for PV string and combiner testing in large commercial and utility installations.

CEC accredited designers and installers working on systems with string voltages above 1000 V will find the P2010 fills a genuine gap in their test kit — it’s the accessory that makes a capable HIOKI clamp meter or DMM fully PV-system capable.

Key Benefits

Measurement Safety Without Compromise The P2010 carries a CAT III 2000 V rating — the same category as solar PV installations per IEC 61730-1. Overload protection is rated to 2200 V DC/AC for one minute between the input terminals. You’re not working at the ragged edge of your instrument’s limits; you have genuine safety margin built in.

Non-Intrusive Measurement — No System Shutdown Required One of the practical advantages of voltage probing over current-injection testing is that you can take live measurements without interrupting generation. The P2010 allows high-voltage DC string and array measurements while the system remains connected and generating. This is valuable for fault-finding, commissioning verification, and regular maintenance inspections without costly downtime.

Extends Your Existing HIOKI Instrument Investment If your team already carries HIOKI CM4373-50, CM4375-50, CM4371-50, CM4141-50, or DT4261/DT4281/DT4282 instruments, the P2010 is the most cost-effective way to add high-voltage PV measurement capability. You don’t need to purchase a dedicated high-voltage meter — the P2010 transforms your existing instrument into a fully rated 2000 V DC measurement solution.

Wide Operating Temperature Range Solar work happens outdoors, often in harsh Australian conditions. The P2010 operates from –25°C to +65°C, making it equally capable during a crisp winter commissioning job in the Victorian Alps or summer maintenance work on a rooftop array in Darwin.

Precision Input Resistance The 20 MΩ ±5.0% input resistance ensures the probe draws negligible current from the circuit under test — important when working with string configurations where load disturbance can affect readings and potentially trigger protection equipment.

Compatible Instruments

The P2010 is compatible with the following HIOKI instruments. Note that connection modes differ:

DC High V Probe Mode (direct 2000 V range):

• CM4141-50 AC Clamp Meter
• CM4371-50 AC/DC Clamp Meter
• CM4373-50 AC/DC Clamp Meter
• CM4375-50 AC/DC Clamp Meter
• DT4261 Digital Multimeter

1/10 Output Rate Mode (scaled reading):

• DT4252, DT4253, DT4255, DT4256
• DT4281, DT4282

Note: The P2010 requires a compatible HIOKI clamp meter or DMM, purchased separately. Always confirm your instrument model before ordering.

Application Use Cases

1. Utility-Scale and Commercial Solar PV Commissioning When commissioning a large-scale solar installation with string voltages at or approaching 1500 V DC, AS/NZS 5033 and IEC 62446-1 require measurement of open-circuit voltage and operating voltage for each string.

The P2010 makes this task safe and straightforward — connect to your HIOKI clamp meter or DMM and verify string voltages with a CAT III rated instrument without improvised workarounds.

2. Fault Diagnosis on High-Voltage PV Strings String-level faults — failed bypass diodes, shading losses, degraded modules — often require live voltage measurements across strings and sub-arrays to isolate the fault. The P2010 allows this diagnostic work to be performed at full system voltage with confidence, without needing to de-energise the array.

3. Combiner Box and DC Distribution Inspections Combiner boxes on utility installations can see bus voltages above 1000 V DC. Verifying bus voltage, checking string input voltages, and confirming fuse/circuit breaker operation all require high-category measurement tools. The P2010 combined with a compatible HIOKI clamp meter gives technicians the right instrument for the task.

4. Maintenance Inspections on Aging Installations As Australia’s early large-scale solar installations approach 10+ years of operation, scheduled maintenance and performance inspections are increasingly common. Measuring degradation trends in string output voltage requires repeatable, accurate, high-voltage capable measurements — exactly what the P2010 delivers.

5. Safety Audits and Compliance Verification Safety officers and accredited auditors verifying PV system installations against AS/NZS 5033 or IEC 62446-1 need to document voltage measurements made with correctly rated instruments. The P2010’s CAT III 2000 V rating ensures the measurement chain meets the overvoltage category requirements specified in the applicable standards.

Technical Specifications

Combined Accuracy (with compatible instruments):

Included in the Box

• HIOKI P2010 DC High Voltage Probe ×1
• Instruction Manual ×1
• Operating Precautions ×1

Compatible HIOKI clamp meter or DMM must be purchased separately.

Optional: Carrying Case C0203 available separately.

Q: What is the HIOKI P2010 used for? The HIOKI P2010 is a DC high voltage probe accessory used to extend the voltage measurement capability of compatible HIOKI clamp meters and digital multimeters to 2000 V DC with a CAT III safety rating. It is primarily used for safe inspection, commissioning, and maintenance of high-voltage solar PV installations, including large-scale systems operating at 1500 V DC.

Q: What CAT rating do I need to measure solar PV installations? According to IEC 61730-1 (PV module safety qualification standard), solar PV installations are classified as Measurement Category III (CAT III) environments. Any instrument or probe used for voltage measurement on PV strings, combiners, or arrays must carry a CAT III rating appropriate to the system voltage. For modern 1500 V DC systems, a CAT III 1500 V or higher rating is required.

Q: Is 2000 V measurement safe for a 1500 V solar installation? Yes. Using a 2000 V rated probe like the HIOKI P2010 on a 1500 V DC solar installation provides a safe margin above the system’s operating voltage. The CAT III 2000 V rating also accounts for transient overvoltages — voltage spikes that can significantly exceed the nominal system voltage during switching events or fault conditions.

Q: Can I use my standard multimeter on a 1500 V solar installation? Standard multimeters rated to CAT III 1000 V or CAT II 1000 V are not suitable for direct measurement on solar PV strings operating at or above 1000 V DC. You either need a dedicated high-voltage meter, or an accessory like the HIOKI P2010 that extends a compatible meter’s rating to CAT III 2000 V.

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• Soft carrying case
• For use with 3280-10F AC Clamp Meters or as a case for test leads

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The Hioki L2020 Right Angle Test Lead Set is a professional-grade accessory designed to optimize efficiency and precision in battery testing and maintenance tasks.

Engineered for compatibility with the Hioki BT3554 and RM3548 measurement devices, the L2020 features advanced technical elements that meet the exacting standards of engineers, technicians, and procurement specialists working in industries like electronics, renewable energy, and manufacturing.

Key Features of the Hioki L2020

Angled Pogo-Pin Tips for Precision

The standout feature of the L2020 is its innovative angled pogo-pin tips. This unique design ensures a secure and precise connection to battery contacts, significantly reducing the risk of inaccurate readings caused by improper alignment. The angled configuration greatly enhances usability in confined or hard-to-reach spaces, making it ideal for multi-cell battery packs or densely arranged testing setups.

High Compatibility

Optimized for seamless integration, the L2020 is fully compatible with Hioki’s BT3554 and RM3548 devices. Whether performing conductivity checks or resistance measurements, this test lead set guarantees reliable performance without the hassle of compatibility concerns.

Maximum Voltage Rating of 60 VDC

Designed with safety and dependability in mind, the Hioki L2020 is rated for a maximum voltage of 60 VDC. This ensures secure operation in various low- to mid-voltage applications, making it an indispensable tool for battery maintenance in commercial and industrial settings.

Coaxial Design for Reliable Performance

The coaxial design of the test leads enhances signal integrity by minimizing interference. This feature is particularly valuable for applications requiring precise and consistent results. By reducing noise and ensuring stable readings, the L2020 empowers you to make accurate, data-driven decisions, even in demanding environments.

Replaceable Probe Tips for Longevity

To extend the product’s service life, the Hioki L2020 test lead set includes replaceable probe tips. This practical design supports both cost-effectiveness and sustainability, ensuring that replacements can be made without the need to purchase an entirely new set. It’s a long-term investment in equipment resilience and operational continuity.

Benefits for Industry Professionals

The Hioki L2020 right angle test lead set addresses the challenges professionals face in demanding work environments. The angled pogo-pin tips enhance ergonomics, enabling precise connections and minimal operator fatigue during extended test sessions. Its compatibility with trusted Hioki devices guarantees a seamless experience across battery maintenance tasks. Additionally, the 60 VDC voltage rating underscores its suitability for diverse industrial applications, from renewable energy systems to quality assurance programs in manufacturing.

For those working with battery contacts, the L2020’s durable design and replaceable tips reduce downtime, ensuring extended operational use and cost savings. The coaxial construction further ensures that every measurement is as accurate as possible, supporting compliance and efficiency across procurement and maintenance workflows.

Why Choose the Hioki L2020?

When precision, reliability, and longevity are non-negotiable, the Hioki L2020 Right Angle Test Lead Set stands out as the professional’s choice. Its smart design and robust features ensure maximum usability and accuracy, solidifying its place as an essential tool for successful battery systems management.

Equip your toolkit with the Hioki L2020 today and experience unmatched reliability for all your battery testing and maintenance needs.

The post Hioki L2020 Right Angle Test Lead Set for Battery Applications | Designed for the BT3554 and RM3548 appeared first on rapid-tech.

Looking for a precise and reliable test lead for battery and resistance testing? The Hioki 9465-10 Straight Test Lead with Pogo Pins is designed to deliver exceptional performance for professionals using the BT3554 portable battery tester and the RM3548 portable resistance meter.

This high-quality straight pin test lead is equipped with advanced features to ensure accuracy and ease of use, even in challenging environments.

Why Choose the Hioki 9465-10 Test Lead?

The Hioki 9465-10 stands out for its innovative coaxial design paired with gold-plated pogo-pin tips. These features are perfect for taking measurements on small or hard-to-access battery contacts.

With a maximum voltage rating of 60 VDC and an impressive total length of 1900 mm, this test lead offers the flexibility and durability you need for precise, hassle-free measurements.

Key Features & Benefits

1. Straight Pogo-Pin Tips for Hard-to-Reach Areas
   The 2.9 mm diameter pogo-pin tips with a coaxial structure (featuring a SENSE terminal in the center and a SOURCE terminal on the outer edge) allow for measurements in tight spaces. This includes battery contacts with limited accessible surfaces or through inspection holes in battery connector covers—without needing to remove the cover.
2. Superior Performance for Battery and Resistance Testing
   Designed to work seamlessly with the Hioki BT3554 series battery testers and the RM3548 resistance meters, the 9465-10 ensures efficient and accurate measurements every time.
3. Durable and Long-Lasting Design
   Built for longevity, the probe tips are replaceable (replacement tip model: 9465-90), extending the life of your test lead and providing cost-effective reliability.
4. Flexible and Versatile Length
   With a total cable length of 1900 mm, including split-to-probe lengths of approximately 100 mm (red) and 550 mm (black), the test lead provides ample reach and flexibility for various test setups.
5. High Contact Precision
   The pogo-pin tips offer consistent contact pressure (190 g initial, 250 g total, stroke 1 mm), ensuring reliable measurements with minimal effort.

Technical Details

• Type: Straight test lead with pogo pins
• Maximum Voltage Rating: 60 VDC
• Total Length: 1900 mm
• Pin Diameter: 2.9 mm, Length: 13.5 mm
• Compatible Devices: Hioki BT3554 series (BT3554-50, BT3554-51, BT3554-52, BT3554-91, BT3554-92), RM3548 series, and more.

Applications and Use Cases

The Hioki 9465-10 is ideal for professionals working in battery maintenance, quality control, and resistance testing.

Whether you’re testing battery packs, inspecting battery contacts, or working with resistance meters, this test lead provides the accuracy and precision you need.

Upgrade Your Testing with the Hioki 9465-10
Don’t settle for less when it comes to battery and resistance testing. The Hioki 9465-10 Straight Test Lead with Pogo Pins combines durability, reliability, and precision—making it the perfect addition to your professional toolkit. Order now and experience seamless measurements with Hioki’s trusted quality.

The post Hioki 9465-10 Straight Test Lead with Pogo Pins for BT3554 & RM3548 appeared first on rapid-tech.

Key Features

• Large-diameter loop is ideal for measuring large wires and pairs of wires.
• In small spaces
• Freely bendable

Note: CT6280 is a flexible current sensor for measuring large currents. It is not suitable for measuring minute current such as leakage current.

For the CM3291/89, 3280-10F and similar products

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Step up your safety game with Hioki’s DC High Voltage Probe P2000, perfectly designed for safe inspection of high-voltage solar installations. Meeting and exceeding everyday challenges, the P2000 allows high voltage measurements up to CAT III 2000 V.

Precision and Safety- All in One

With the growing need for efficient solar equipment, voltage measurements have become crucial. The P2000 is not only built to accommodate higher voltages but also ensures the protection of inspection workers. It easily connects to compatible Hioki clamp meters and digital multimeters (DMMs), enabling you to safely measure solar installations without interrupting the grid.

Why Choose Hioki P2000?

The P2000 is not an average measurement instrument. It’s designed to keep pace with the evolving solar power systems and EV batteries, which operate at ever-increasing voltages. With the P2000, you stay ahead of the curve, ready to take on new maintenance demands while ensuring your safety from high voltage hazards.

A Must for Solar Installations

Solar installations are categorized as CAT III environments, requiring an instrument that can withstand higher voltages. The P2000 was developed to meet these demands, providing reliable and safe measurements up to 2000 V.

The Future of Solar Installation Maintenance

As solar installation voltage continues to increase, having a reliable and safe measurement instrument is vital. The P2000 was developed with the future in mind, accommodating even higher voltages as larger and more efficient systems come into play.

Make Your Measurements Safer

The DC High Voltage Probe P2000, when connected to a compatible Hioki clamp meter like Hioki CM4371-50 AC/DC Clamp Meter or digital multimeter (DMM), ensures safe measurements of high voltages up to 2000 V.

Upgrade your solar installation measurements with the P2000. Experience not just precision, but also unparalleled safety with Hioki’s DC High Voltage Probe P2000. Order yours today!

The post Hioki P2000 DC High Voltage Probe – Safe, High Precision, and CAT III 2000V Compatible for Solar Installations appeared first on rapid-tech.

Wirelessly connect Hioki-compliant instruments with a simple connection. Transmit measured values to your tablet or smartphone.

Key Features

• Increase your work efficiency, by eliminating human errors from manual reporting
• Transfer readings on instruments to easy-to-read graphical reports to prove integrity
• Increase your work productivity & save costs!
• Provide additional new functions for Hioki instruments such as waveform display & more!
• Compliance with wireless regulations in more than 50 countries and regions

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