REED R5075 1500V DC Solar Clamp Meter | CAT III True RMS

Australia’s solar industry has shifted decisively toward 1500V DC string designs. While these higher-voltage architectures reduce balance-of-system costs and improve efficiency, they’ve created a significant gap in the test equipment most electricians carry. Standard clamp meters rated for 1000V DC simply aren’t safe for today’s utility-scale and commercial rooftop installations.

Working at these elevated voltages demands purpose-designed instrumentation that meets stringent safety standards – not just in theory, but under real-world conditions. Crowded combiner boxes, extreme temperatures, and outdoor exposure add further complexity. And when you’re troubleshooting performance issues across a large array, you need readings you can trust the first time. Guesswork isn’t an option when voltage potentials can exceed 1500V DC and arc flash hazards are very real.

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The Solution: Professional-Grade Solar Testing from String to Inverter

The REED R5075 addresses exactly these demands. Engineered from the ground up for high-voltage renewable energy applications, it carries a genuine CAT III 1500V and CAT IV 600V safety rating – verified through independent ETL certification, not just a manufacturer’s claim. This means reliable protection when measuring on 1500V DC string circuits, combiner outputs, and inverter connections.

Beyond the safety rating, the R5075 delivers the practical features solar professionals actually need on site. The slim 35mm jaw profile fits into tight combiner boxes where standard clamps won’t reach, and it accommodates multiple conductors for rapid string current verification. True RMS sensing handles the non-sinusoidal waveforms common in inverter and VFD environments, ensuring accurate readings regardless of harmonic content.

DC power measurement with direct kVA readout simplifies performance calculations – you’ll see real power values without manually multiplying voltage by current. And the audible polarity indicator helps prevent miswiring during installation, catching reversed connections before they become expensive commissioning problems.

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Key Benefits & Features

• Genuine 1500V DC Safety Rating The CAT III 1500V and CAT IV 600V rating isn’t marketing speak – it’s independently verified through ETL testing to IEC 61010-1 standards. This matters when you’re measuring live 1500V DC strings, where contact or internal meter failure could have serious consequences.
• True RMS for Inverter Environments Solar systems generate complex AC waveforms that confuse average-responding meters. True RMS technology measures actual heating value regardless of waveform shape, giving you dependable current and voltage readings on inverter outputs, VFD-controlled equipment, and grid-connected systems.
• Slim Jaw Accesses Tight Spaces The 35mm jaw opening slides between congested wiring in combiner boxes, junction enclosures, and switchboards where bulkier clamps simply won’t fit. You can clamp individual conductors or bundle multiple strings for aggregate current checks.
• Dual Display Efficiency Monitor voltage and current simultaneously on the 9,999-count backlit LCD. When commissioning or troubleshooting, this eliminates constant mode-switching and speeds up your workflow across dozens of string measurements.
• IP65 Weather Resistance Rooftop conditions are unforgiving – dust, rain, humidity, and temperature extremes are standard. The IP65 enclosure protects sensitive electronics from ingress, maintaining accuracy through harsh Australian environments from coastal installations to outback solar farms.
• Expandable to 3000A AC Connect the optional R5065 flexible current probe for high-current measurements up to 3000A – ideal for main switchboard work, large inverter outputs, and battery storage installations without oversized rigid clamps.
• Integrated Temperature Measurement The included Type K thermocouple probe enables contact temperature readings from -40°C to 400°C. Check cable terminations, busbar connections, and inverter enclosure temperatures without carrying additional instruments.
• Polarity Indication Prevents Miswiring Audible and visual polarity alerts help catch reversed connections during installation – a simple feature that prevents commissioning headaches and potential equipment damage on DC circuits.

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TECHNICAL SPECIFICATIONS

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APPLICATIONS & USE CASES

Commercial and Utility-Scale Solar Installations Verify string voltages and currents during commissioning, conduct performance testing, and troubleshoot underperforming arrays on 1500V DC systems. The genuine CAT III 1500V rating provides the safety margin these installations demand.

Rooftop PV Maintenance and Fault-Finding Identify failing strings, check combiner fuse status, and measure inverter inputs and outputs. The IP65 rating means weather delays don’t halt your inspection schedule.

Battery Energy Storage Systems (BESS) Measure DC bus voltages and currents on high-voltage battery installations. The 2500V DC voltage range accommodates modern battery architectures with capacity to spare.

Switchboard and Distribution Testing Expand to 3000A AC with the optional flexible probe for main switchboard measurements, transformer secondary checks, and large motor circuit verification.

Electrical Contractor General Use Beyond solar, the R5075 handles standard electrical testing – residential through industrial – with voltage, current, resistance, continuity, capacitance, and temperature functions in one instrument.

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WHAT’S INCLUDED

• REED R5075 Professional Clamp Meter
• Type K Thermocouple Wire Probe
• Thermocouple Adapter (mini-connector to banana plug)
• Test Leads
• Protective Carrying Case
• 2 × AA Batteries (installed)
• User Manual

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OPTIONAL ACCESSORIES