New Essential 5 kV and 10 kV insulation resistance testers

NEW Expert 5 kV, 10 kV, and 15 kV insulation resistance testers

The range includes three models: S1-568/2 (5 kV), S1-1068/2 (10 kV), and S1-1568/2 (15 kV). All are trusted by utility engineers, OEMs, and commissioning teams working on critical assets like transformers, cables, switchgear, and bushings.

The adaptive filter, nearly unique to Megger, monitors the rate of change in noise current and applies dynamic damping to prevent test current distortion. It predicts spikes that would otherwise affect results and stabilises readings — even during energisation events or switching noise.

Test modes include IR, DAR, PI, DD, SV, ramp, and PDC (with software). PI Predictor™ reduces Polarisation Index test time by up to 50%, and Re<Act™ shows when insulation is safe to retest, saving time and reducing risk. 

Fully remote control via Bluetooth® or USB enables testing from a safe distance — or even from the comfort of an air-conditioned vehicle during extreme site conditions. Onboard memory and no-dongle Bluetooth® make data transfer seamless. High-performance guard terminals ensure measurement accuracy even with high surface leakage. 

With CAT IV safety ratings, robust design, and powerful time-saving tools, the Megger Expert range gives HV professionals the speed, safety, and confidence they need to test without compromise.

• Reliable results in noisy substations
• Accurate testing with Re<Act™
• Remote control for safer, easier testing
• PI Predictor™ cuts test time in half
• Full diagnostic suite with PDC capability

S1-568/2, S1-1058/2, S1-1568/2 Datasheet

NEW Advanced 5 kV, 10 kV, and 15 kV insulation resistance testers

The Megger Advanced range of 5 kV, 10 kV, and 15 kV insulation resistance testers is ideal for engineers and technicians performing insulation testing on transformers, motors, switchgear, and cables in environments up to 230 kV. These instruments support IR, DAR, PI, DD, SV, ramp, and PDC (with software), providing the diagnostic depth needed for condition assessment and maintenance planning.

Each model includes PI Predictor™ to speed up testing, internal memory for storing results, and optional Bluetooth® for exporting data to PowerDB or CertSuite — no manual recording required.

The new innovative patent applied Re>Act test mode allows the user to make accurate measurements by monitoring reabsorption current. This groundbreaking test mode can ensure reabsorption current does not result in incorrectly passing or failing insulation, helping to maintain safety. In addition, the test mode can be used to ensure dangerous return voltages to not occur.

Choose from three models — MIT525/2, MIT1025/2, and MIT1525/2 — based on your required test voltage. With 6 mA noise immunity and high-performance guard terminals, the Advanced range delivers reliable results where remote control and substation-level noise handling are not required.

• Diagnostic testing with full test suite
• PI Predictor™ cuts test time in half
• Accurate testing with Re<Act™
• Built-in storage and easy data export
• Designed for safe testing in the field

MIT525/2, MIT1025/2, MIT1525/2 Datasheet

Three-phase Winding Resistance Ohmmeter

Three-phase winding resistance ohmmeter for electro-mechanical testing of power, distribution, and instrument transformers

Solar Digital Multimeter and Wireless Current Clamp

Unmatched safety and convenience for solar professionals

The CAT III 1500 V/CAT IV 1000 V True-RMS Fluke 283 FC Digital Multimeter and a283 FC True-RMS Wireless Current Clamp set the new standard for technicians in DC environments up to 1500 V. Whether you’re working with a utility-scale solar photovoltaic (PV) array, wind power, an electric railway, or a data center, the Fluke 283 FC has been engineered to enhance safety and increase productivity while giving you accurate, reliable, and repeatable results.

The 283 FC/PV includes CAT III 1500 V DC safety-rated accessories so you can work confidently in higher voltage environments without compromising safety. Staubli MC4 test leads allow you to quickly make reliable, secure connections to modules or strings to test DC voltage up to 1500 V DC. TL175-HV CAT III 1500 V/CAT IV 1000 V rated silicone test leads give you more flexibility when testing voltage, millivoltage, resistance, continuity, or capacitance on inverters, combiner boxes, PV arrays, or individual PV modules. A bright backlit LCD screen and illuminated keypad make it easier to work in both direct and low-light conditions. The included magnetic hanging kit frees up your hands, and the custom hard carrying case protects your investment during transport.

Additional features:

• Highly accurate voltage measurements for precise frontline troubleshooting
• Current measurements up to 60 A AC/DC for safely troubleshooting individual strings of modules with greater accuracy (when using a283 FC wireless current clamp)
• Visual and audio polarity indicators help prevent accidental module wiring issues
• User-defined limit gauge helps you make quick go/no-go troubleshooting decisions
• Unique multimeter readiness self-check helps ensure your meter is ready to test
• Save and log measurements to internal memory and view them on your mobile device via Fluke Connect™

Fluke 283 FC/PV Datasheet

Loop Calibrator

Compact, lightweight, full-featured mA loop calibrator

The Fluke 715 Volt mA Calibrator delivers outstanding performance, durability, and reliability in a compact, lightweight tool. Offered in the rugged Fluke 80 Series digital multimeter package, the calibrator measures loop current as well as voltage output. It sources voltage to 200 mV or 20 V, measures loop current (0-20 mA, 4-20 mA) signals with 0 .01 % accuracy, and 1 µA resolution, and measures voltage output process signals from PLCs and transmitters. It can source or simulate 4-20 mA loop current and provides a 24 V loop supply with simultaneous current measurement.

• Provides step and linear ramp output function
• Features configurable zero and span settings
• Provides 24 V loop supply with simultaneous current measurement
• Features enhanced voltage and current measure and source accuracy
• Includes a 250-ohm HART resistor with loop power

Easy to use and carry

The 715 is also extremely easy to use with a simple push button interface. It features the rugged construction that Fluke tools are known for and is EMI tolerant as well as dust and splash resistant. It also features a removable battery door for quick battery changes after the 18 hours of battery life the 9 V battery provides. And the tool also comes with a protective yellow holster with test lead storage. For added convenience the Fluke 715 is also compatible with the ToolPak magnetic meter hanging system.

Fluke 715 Datasheet