Fully automated tester for electric safety compliance testing MI 3107

Overview
The MI 3107 EurotestEASI Touch is an advanced portable multifunction tester for low-voltage TT and TN electrical installation testing. Housed in an ergonomic Eurotest casing, it delivers fast, accurate measurements, automated test sequences and on-site guidance to help technicians meet regulatory requirements.

Key features

• 5.2 Ah Li‑ion battery
• Universal USB Type‑C connector for fast charging (15 V, 3 A, 45 W) and PC communication
• 4.3” TFT high‑resolution colour touchscreen for quick operation and data entry
• Separated RCD type and current shape detection; automated RCD testing (RCD AUTO)
• Predefined automatic tests:
  • Auto TT
  • Auto TT RCD
  • Auto TN
  • Auto TN RCD
• Predefined AUTO SEQUENCE and Multitest profiles
• Built‑in help screens, graphical menus and fuse tables for on‑site reference
• Real‑time L‑N, L‑PE, N‑PE voltage monitoring and measurement filtering by area group
• Automatic polarity reversal on continuity tests
• Wi‑Fi and Bluetooth® connectivity; Metrel Cloud and Metrel ES Manager compatibility (some features require licences)

Measuring functions

• Insulation resistance (50 V, 100 V, 250 V, 500 V, 1000 V) with automatic discharge
• Continuity including acoustic continuity, automatic lead compensation and polarity reversal
• Loop / Z‑line impedance: Zline L‑L, L‑N; Zloop L‑PE; Zs (RCD) 3‑wire; fuse evaluation and Max. Ipfc up to 20 kA
• RCD testing: types AC, A, F, B, B+, RCD(t), MI‑RCD, EV‑RCD; currents 10 mA–1000 mA; RCD I Ramp and AUTO functions; 3‑phase testing
• Earth resistance: 2‑wire and 3‑wire tests, 200 mA earth/PE lead tests, ring test (UK) and automatic evaluation
• EVSE measurements and optional EVSE AUTO sequences and adapters

Applications / Used for

• Initial and periodic testing and inspection of domestic and small‑office low‑voltage installations
• Testing of TT and TN systems
• Fire safety and hazard testing, installation troubleshooting and maintenance
• EVSE testing, EVSE installation verification and commissioning
• Low‑voltage earthing and lightning protection measurements

Intended users

• Electrical installation companies and electricians
• Electrical inspectors and safety officers
• Facility maintenance teams and technical services
• EVSE installers and testing specialists

Standards applied

• IEC/EN 60364 series; IEC/EN 60364‑6; IEC/EN 60364‑4‑41
• IEC/EN 61557 series (parts 1,2,3,4,5,6,7,10,12)
• IEC/EN 61008‑1, IEC/EN 61009; IEC 62305; BS 7671; AS/NZS 3017/3018
• IEC/EN 61010 and IEC/EN 61326 (safety and EMC); IEC/EN 61851, IEC/EN 62752 (EVSE)

Included automatic functions / user interface

• Auto tests for TT and TN systems and combined AUTO TN/RCD and AUTO TT RCD
• AUTO SEQUENCE profiles with PASS/FAIL evaluation and optional barcode/QR workflows
• Adaptable touchscreen UI, graphical help and multi‑level memory/database

Accessories, expandability and optional items

• Optional EVSE adapters (Mode 3 cable adapter, EVSE adapters)
• Optional Ring/Active/Passive adapters and specialised adapters (UK Ring, Active Impedance Adapter, EASYswitch, Tip/Plug Commanders)
• Optional Bluetooth, mobile apps and Metrel Cloud licences for enhanced data transfer and reporting

Technical characteristics / specifications

• Model: MI 3107 EurotestEASI Touch
• Brand: Metrel
• Dimensions: 230 x 103 x 115 mm
• Mass: 1.4 kg
• Battery: 5.2 Ah Li‑ion (rechargeable)
• Connector: USB Type‑C (charging and PC communication, 15 V, 3 A, 45 W)
• Display: 4.3” TFT colour touchscreen
• Memory: internal memory and microSD compatibility
• Connectivity: Wi‑Fi, Bluetooth®, USB/USB‑C; Metrel Cloud and Metrel ES Manager compatible (some features require licences)
• Typical measurements: insulation, continuity, loop/line impedance, earth resistance, RCD effectiveness, EVSE monitoring (optional)
• Test voltages for insulation: 50 V, 100 V, 250 V, 500 V, 1000 V
• RCD currents supported: 10 mA–1000 mA; Max. Ipfc up to 20 kA
• Protection categories: CAT IV 300 V, CAT III 600 V