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Metrel MI3116 Photovoltaic & Electrical Installation Tester

Metrel
SKU: METRMI3116-CONF
  • Combines 1500 V insulation testing and full I/U curve analysis in one advanced instrument
  • Has a wireless remote unit that delivers real‑time irradiation and temperature data for highly accurate PV diagnostics
  • Available in a Standard set and a Bifacial set
More Info

Metrel MI3116 Photovoltaic & Electrical Installation Tester

The Metrel MI3116 Photovoltaic & Electrical Installation Tester is an advanced photovoltaic and electrical installation tester built to work on modern PV systems operating up to 1500 VDC. It simplifies complex testing by combining insulation resistance and I/U curve measurements, reducing time on site while maintaining the accuracy required for high-efficiency PV modules.

The MI3116 includes a wireless Wi-Fi remote unit that allows real-time measurement and logging of irradiation and cell temperature, providing more precise diagnostics and better insight into system performance under actual operating conditions. The built-in Auto Test function for Category 1 testing streamlines workflows, while the intelligent correction feature lets users adjust previously incorrect parameters across individual results or entire test groups without repeating the tests.

Operating it is easy thanks to a responsive colour touchscreen which lets users configure tests, capture results, and review data in both numerical and graphical formats. A memory organiser and PV module database handler make it easy to manage large datasets, while AUTOSEQUENCE functionality reduces manual intervention during repetitive testing.

The MI3116 supports a full suite of essential PV measurements, including insulation resistance up to 1500 V, I/U characteristics, Isc and Uoc testing, polarity checks, and continuity of protective conductors. It also enables accurate acquisition of irradiation and module temperature, ensuring reliable performance verification. Support for bifacial modules makes it suitable for newer, high-efficiency installations.

For enhanced reporting and data management, the MI3116 integrates with SW 1201 Metrel Electrical Safety Manager (MESM). This software allows users to predefine test structures, upload and download results, analyse I/U curves, and generate professional reports with ease, ideal for compliance and documentation.

Two configurations are available to suit different needs. The standard set includes the analyser, PV remote unit, reference cell, temperature sensor, and a comprehensive range of leads, probes, and accessories for immediate deployment. The bifacial set, on the other hand, expands on this with additional equipment for accurate testing of bifacial modules, making it a strong choice for advanced solar installations.

The analyser features a robust design with IP54 protection (when closed), making it suitable to use in demanding environments. It includes a high‑resolution 4.3” colour display, reliable Li‑Ion battery power, and compliance with key standards such as EN 62446 and EN 61557. With support for microSD storage up to 512 GB, USB and RS232, plus Bluetooth and Wi-Fi connectivity, it offers flexible data handling both on site and in the office.

Key Features

  • Insulation and I/U measurement of 1500 V PV systems in one instrument
  • Suitable for testing high‑efficiency PV modules
  • Capacitive measurement method
  • Wireless (Wi-Fi) remote unit for measuring and logging irradiation and cell temperature of PV modules
  • Auto test for Category 1 tests
  • Calculation of STC values and comparison with nominal data
  • Correction of previously incorrectly entered parameters on already executed measurement or a group of measurements
  • Controlled via a colour touch screen, allowing test setup, measurement execution, result storage, and review (numerical or graphical)
  • Memory organiser, group operations, and search functionality
  • PV modules database handler
  • AUTOSEQUENCE functionality
  • SW 1201 Metrel Electrical Safety Manager (MESM) for predefined structures, data transfer, I/U curve analysis, database exploration, and professional report generation

Metrel MI Series Comparison Table

  MI3114 MI3115 MI3116
Voltage DC ✓ ✓ ✓
Voltage DC 1500 V ✓ ✓ ✓
Current DC ✓ ✓ ✓
Current DC 20 A X ✓ X
Current DC 40 A ✓ X ✓
Power for I/U Curve in PV X ✓ ✓
Isc, Uoc, Polarity ✓ ✓ ✓
PV Insulation ✓ ✓ ✓
Irradiance X ✓ ✓
Module Temperature ✓ ✓ ✓
I-V Curve X ✓ ✓
Extrapolation to STC X ✓ ✓
Umpp, Impp, Pmax X ✓ ✓
Module Database X ✓ ✓
Rs (Calculated in PC SW) X ✓ ✓
DC Side Measurements U ✓ ✓ ✓
DC Side Measurements I ✓ ✓ ✓
DC Side Measurements P X ✓ ✓
Bifacial Modules X X ✓
High Efficiency Modules (20%+) ✓ ✓ ✓
PASS/FAIL Indicators ✓ ✓ ✓
Voltage Monitoring ✓ ✓ ✓
LCD/Backlit Display ✓ ✓ ✓

Specialists In Solar PV Test Equipment

Watch the video above to see how we can help you find the right solar pv test equipment & get in touch on 0113 248 9966 or sales@test-meter.co.uk.

As a leading Solar PV Test Equipment and Solutions provider in the UK, we have a wide range of expertise. Whether you're conducting simple commission tests, small-scale 1000V solar PV rooftop installations or 1500V commercial solar farms to more in-depth IV curve trace analysis, our team ensures your enquiry is looked after from start to finish, providing you with the perfect solution.

Find the best solution for your application and budget through:

  • Onsite-demo/remote consultations on request
  • 'Try Before You Buy' and hire options available
  • After-sales care that provides ongoing calibration and servicing
  • Finding the optimal software package, ensuring the correct reporting and data functionality for your needs

Can't find the right Solar PV Test Equipment or solution? We're on hand to help, please get in touch on 0113 248 9966 or sales@test-meter.co.uk

What’s in the Standard Set?

  • Instrument MI 3116 PV
  • A 1785 PV Remote WL
  • A 1833 PV temperature sensor
  • A 1846 PV Reference cell V2
  • 2x A 1835 Clamp for attaching accessories
  • A 1840 MC4 Test lead, Blue, 1500 V
  • A 1841 MC4 Test lead, Red, 1500 V
  • A 1790 RED Test lead, Red, 3m, 2,5mm2
  • A 1790 BLU Test lead, Blue, 3m, 2,5mm2
  • A 1792 Test lead Green, 3m, 0,75mm2
  • A 1509 Test lead, Black, 50m, 0,75mm2 – Reel
  • A 1012 Test lead, Green, 4m, 0,75mm2
  • A 1309 Crocodile clip, Green
  • A 1014 Test probe, Black
  • A 1015 Test probe, Blue
  • A 1016 Test probe, Red
  • A 1727 USB cable TypeA/B
  • A 1728 Power cable, 2m, 3x0.75mm2
  • A 1551 Soft padded carrying bag Size: L
  • A 1548 Power supply 0,5A/12V
  • A 1791 Carrying strap with tightening buckle
  • S 2080 Battery set, Type AA, 2100mAh - 6pcs
  • Calibration certificate for MI 3116
  • Calibration certificate for A 1785
  • User Manual
  • SW 1201 Metrel Electrical Safety Manager (MESM)

Part number: MI 3116 ST

What’s in the Bifacial Set?

  • MI 3116 standard set
  • A 1846 PV Reference cell V2
  • A 1383 Temperature probe with 3 m cable
  • A 1847 Communication cable, 0.5m
  • A 1835 Clamp for attaching accessories

Part number: MI 3116 BF

Specification

General specifications

  • Display: Colour TFT display, 4.3”, 480 x 272 pixels with touch screen
  • Battery: Li-Ion, 14.4 V, 4400mAh, non-removable
  • Mains: 100 V … 240 V, 50 Hz … 60 Hz, 100 W
  • Overvoltage category: CAT II / 300V
  • Protection classification: Reinforced insulation
  • Pollution degree: 2
  • Degree of protection: IP 54 (cover closed)/ IP 40 (cover opened)
  • Altitude: up to 4000 m
  • Memory: Memory card slot, microSD card, up to 512 GB
  • Connectivity RS232: 1 port, DB9 female
  • USB: USB 2.0, standard Type-B
  • Bluetooth: v4.2 BR/EDR and BLE specification
  • Wi-Fi: 802.11 b/g/n (802.11n up to 150 Mbps) (Only for communication with A 1785 - PV Remote WL)

For in-depth specifications, please click on the datasheet below.
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pdf Metrel MI3116 Datasheet pdf 764.4 KB Download