MI 3125BT COMBO
Multifunctional testers
MI 3125BT is the ideal instrument for engineers who perform high volume testing or work regularly on TT and TN systems. Containing all necessary tests for installation safety testing, MI 3125BT offers the brand new ability to test B-type (DC sensitive) RCDs. COMBO contains integrated characteristics of fuses and RCDs (including EV type) for the evaluation of line/loop impe-dance results. The bright graphic display with backlight ensures that results, indications, measurement parameters and messages are clear, visible and easy to read. The red and green LEDs on either side of the display provide a clear PASS/FAIL evaluation of test results. Each test has its own individual help screen describing how to connect the instrument into the installation and how to perform a measurement. All the results can be quickly saved and referenced on the instrument and then downloaded via the MESM software.
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- Instrument MI 3125BT COMBO PRO
- Soft hand strap
- Small soft carrying bag
- Test lead, 3 x 1.5 m
- Mains Plug Lead
- Tip Commander, 1.5m
- Test probe, 3 pcs (blue, brown, green)
- Crocodile clip, 3 pcs (blue, brown, green)
- Power supply adapter + 6 rechargeable batteries NiMH, type AA
- USB cable
- Metrel ES Manager BASIC license
- Metrel aMESM PRO Android app
- Short instruction manual
- Calibration certificate
Standards applied
Building LV Installation
- EISinsp Competences: Low Voltage Electrical Installation Safety Inspection
- EISc Competences: Low Voltage Electrical Installation Safety for Contractors and Maintainers
- IEC/EN 60364 Electrical Installations for Buildings series
- IEC/EN 60364-6 Electrical Installations for Buildings - Verification
- IEC/EN 60364-4-41 Electrical Installations for Buildings - Protection against electric shock
- IEC/EN 60755 General safety requirements for residual current operated protective devices
- IEC/EN 61008-1 Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs)
- IEC/EN 61557 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - series
- IEC/EN 61557-1 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements
- IEC/EN 61557-2 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance
- IEC/EN 61557-3 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance
- IEC/EN 61557-6 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 6: Effectiveness of residual current devices (RCD) in TT, TN and IT systems
- IEC/EN 61557-7 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence
- IEC/EN 61557-10 Electrical safety in low voltage distribution systems up to 1 000 v a.c. and 1 500 v d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 10: Combined measuring equipment for testing, measuring and monitoring of protective measures
- VDE 0413 (IEC 61557) Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - series
- AS / NZ 3017 Electrical installations – Verification guidelines
- AS / NZ 3018 Electrical installations - Domestic installations
- BS 7671 IEE Wiring Regulations (18th edition)
- CEI 64.8 V4 rated electrical equipment not exceeding 1,000 VAC and 1,500V DC current
Earthing and lightning protection
- LPSinsp Competences: Lightning Protection of Buildings Inspection
- LPSc Competences: Lightning Protection of Buildings for Contractors and Maintainers
- IEC 62305 Protection against lightning - series
- IEC/EN 61557-5 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 5: Resistance to earth
- IEC/EN 61557-4 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth connection and equipotential bonding
Instrument safety towards user
- Directive EMC 89/336/EE on electromagnetic compatibility
- IEC/EN 61010 Safety requirements for electrical equipment for measurement, control, and laboratory use - series
- IEC/EN 61010-2-033 Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-033: Particular requirements for hand-held multimeters and other meters for domestic and professional use, capable of measuring mains voltage
EMC safety
- IEC/EN 61326 Electrical equipment for measurement, control and laboratory use - EMC requirements - series
Properties
Measuring functions
- Insulation resistance with DC voltage;
- Continuity of PE conductors with 200 mA test current with polarity change;
- Continuity of PE conductors with 7 mA test current (continuous measurement) without RCD tripping;
- Line impedance;
- Loop impedance;
- Loop impedance with Trip Lock RCD function;
- TRMS voltage and frequency;
- Phase sequence;
- RCD testing (general and selective, type AC, A and B);
- Earth resistance (3-wire method).
Key features
- LED Pass/Fail indicators: two LED indicators for PASS / FAIL evaluation of test results are placed on both sides of the LCD
- Help screens: instrument comes complete with built-in help screens for referencing on site.
- Earth resistance measurement: instrument performs 3-wire earth resistance testing with two additional rods.
- Built-in fuse tables: this unique feature allows automatic evaluation of the line / loop impedance compared to the regulations.
- Online voltage monitoring: monitors all 3 voltages in real-time.
- Upgradeable: if changes occur to the regulations, upgrades can be made to the firmware to keep the instrument up to date.
- Polarity swap: automatic polarity reversal on continuity test.
- Insulation range: wide range of insulation test voltages from 50 V to 1000 V, reading up to 1000 MΩ.
- Trip Lock function: Zs (RCD) function performs a loop impedance test without tripping the RCD.
- Multi-system testing: tests on single and multiphase TT and TN systems.
- Built-in charger & rechargeable batteries: unit has a built-in charging circuit and comes complete with a set of rechargeable NiMH batteries.
- RCD auto: automated RCD testing procedure significantly reduces test time.
- B type RCD testing is supported.
- BT connectivity: it enables BT communication with Android tablets and smart phones via built-in BT.
- PC SW Eurolink PRO included in the standard set enables downloading of test results and parameters and creation of test reports.
Technical data
- Dimensions: 140 x 80 x 230 mm
- Mass: 1.0 kg
Applications
Patient recovery rooms and hospital wards
- Public and workspace electrical safety in healthcare
Secondary power sources in healthcare
- Field hospital
Preventative maintenance
- Earth continuity and insulation testing
- Line and loop impedance and RCD testing
- Basic earth resistance
- Voltage measurements
- Current measurements
- Frequency measurements
Troubleshooting
- Installation troubleshooting
Specifications
Downloads
| Datasheet | Language | Version | Release | Notes | Type | Size | Download |
|---|---|---|---|---|---|---|---|
| PC SW EuroLink PRO | en | 1.0 | 13.03.2014 | 915.07 KB |
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| MI 3125BT COMBO | uk | 2018 | 04.10.2018 | Single leaflet | 531.06 KB |
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| Other | Language | Version | Release | Notes | Type | Size | Download |
|---|---|---|---|---|---|---|---|
| Installing vehicle charge points? | uk | 2018 | 15.11.2018 | 3.23 MB |
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| Manual | Language | Version | Release | Notes | Type | Size | Download |
|---|---|---|---|---|---|---|---|
| MI 3125BT COMBO | uk | 2.7.6 | 09.09.2022 | 20 751 577 | 2.63 MB |
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| Fuse tables guide | en | 1.11.1 | 20.01.2023 | 350.79 KB |
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| DoC | Language | Version | Release | Notes | Type | Size | Download |
|---|---|---|---|---|---|---|---|
| UK Declaration of Conformity | uk | 02.09.2022 | QR code | External link | Unknown |
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| PC Software | Language | Version | Release | Notes | Type | Size | Download |
|---|---|---|---|---|---|---|---|
| SW 1201 Metrel Electrical Safety Manager (MESM) | Multi-Language | 1.23.0.1115 | 29.02.2024 | Readme | zip | 369.58 MB |
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| SW 0101 EuroLink PRO (UK) | uk | 5.17 | 18.03.2019 | zip | 31.93 MB |
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| Android | Language | Version | Release | Notes | Type | Size | Download |
|---|---|---|---|---|---|---|---|
| SW 1307 Eurolink Android | en | 04.01.2021 | QR code | External link | Unknown |
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| Firmware | Language | Version | Release | Notes | Type | Size | Download |
|---|---|---|---|---|---|---|---|
| Firmware MI 3125BT | uk | 3.93 | 20.06.2023 | zip | 701.85 KB |
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