Impedance tester MI 3136 EurotestCOMBO XC

insulationphase sequenceRCD

Overview
The MI 3136 EurotestCOMBO XC is a portable multifunction tester for low-voltage installation verification and electrical safety inspections. Designed for field use, it provides fast, standard-compliant measurements and on-site evaluation to support installation verification, troubleshooting and maintenance tasks.

Key features

• Integrated 5.2 Ah Li‑ion battery with built-in charger
• USB Type‑C port for charging and data (15 V, 3 A, 45 W)
• 4.3" TFT high-resolution colour touchscreen for test setup and results review
• Dedicated selection of RCD type and current shape; automated RCD procedures (RCD AUTO, RCD I ramp)
• Predefined automatic tests: Auto TT, Auto TT RCD, Auto TN, Auto TN RCD
• Programmable AUTOSEQUENCE profiles (EVSE sequence optional)
• On-board help screens and fuse tables for on-site evaluation of loop/line impedance
• Real-time monitoring of all three phase voltages and automatic polarity reversal on continuity tests
• Measurement filtering by selected area group
• Wi‑Fi and Bluetooth® connectivity for Metrel Cloud communication (licence options)
• Compatible with Metrel Cloud Storage, Metrel Cloud App and PC SW Metrel ES Manager (licence options)

Used for

• Initial and periodic testing and inspection of domestic and small-office low-voltage installations
• Verification of TT and TN earthing systems
• Fire safety and shock hazard assessments
• Installation troubleshooting and commissioning checks
• Testing of electric vehicle supply equipment (EVSE)
• Preventive, predictive and corrective maintenance tasks
• Low-voltage earthing and lightning protection verification

Used by

• Apprentices, entry-level and small electrical contractors
• Facility maintenance teams and service companies
• Technical support organisations (fire services, defence, healthcare)
• Public sector maintenance departments
• Hotels, restaurants and commercial premises
• Rental companies and small-to-medium installation firms
• Entry-level electrical inspectors and training centres

Standards / Competences

• EISinsp Competences: Low Voltage Electrical Installation Safety Inspection
• EISc Competences: Low Voltage Electrical Installation Safety for Contractors and Maintainers
• IEC/EN 60364 series (Electrical installations of buildings)
• IEC/EN 60364-6 Verification; IEC/EN 60364-4-41 Protection against electric shock
• IEC/EN 60755, IEC/EN 61008-1 (RCCBs), IEC/EN 61009 (RCBOs)
• IEC/EN 61557 series (measurement equipment for verification of protective measures)
• VDE 0413 (IEC 61557), BS 7671, AS/NZ 3017, AS/NZ 3018
• IEC/EN 61851, IEC/EN 62752 (EVSE related)
• IEC/EN 61010, IEC/EN 61326 (instrument safety and EMC)

Software & Cloud

• Metrel Cloud Storage (SW 1404) — compatible (licence)
• Metrel Cloud App (SW 1406) — compatible (licence)
• PC SW Metrel ES Manager (SW 1201) — professional reporting and data transfer (licence options)

Technical specifications

• Dimensions: 252 x 111 x 165 mm
• Mass: 1.78 kg
• Battery: 5.2 Ah Li‑ion with built-in charger
• Charging/Communication: USB Type‑C (15 V, 3 A, 45 W)
• Display: 4.3" TFT high-resolution colour touchscreen
• Connectivity: Wi‑Fi and Bluetooth® (for Metrel Cloud communication)
• RCD testing: separate RCD type and current shape, RCD AUTO and RCD I ramp options; supports AC, A, F, B, B+ types
• Auto sequences: Auto TT, Auto TN, Auto TN RCD, Auto TT RCD and programmable AUTOSEQUENCES
• Loop / line impedance: Zline/Zloop/Zs tests with fuse table evaluation; Max. Ipfc = 20 kA supported
• Insulation tests: 50 V, 100 V, 250 V, 500 V, 1000 V with automatic discharge
• Earth/ground measurements: 2-wire and 3-wire methods, PE lead resistance 200 mA, ring tests (UK), 200 mA/7 mA continuity options
• Pass/Fail evaluation and on-site parameter settings
• IP rating: IP40; Safety category: CAT IV 300 V, CAT III 600 V