Brand: Metrel

Metrel MI 3121 SMARTEC Insulation and Continuity Tester

Name: Metrel MI 3121 SMARTEC Insulation Tester – Datasheet & Quote
Brand: Metrel
SKU: MI 3121

Description

A handheld insulation and continuity tester with a PASS/FAIL verdict

The Metrel MI 3121 SMARTEC is a dedicated insulation and continuity tester for the verification, maintenance and periodic testing of electrical installations. It measures insulation resistance at 50, 100, 250, 500 and 1000 V DC over a range of up to 30 GOhm, runs continuity tests at 200 mA or 7 mA with automatic polarity reversal, and measures voltage and frequency.

Metrel designed it for use on site: a very large LCD with bargraph and backlight, bright green and red indicators that give an immediate PASS or FAIL against preprogrammed limits, a magnetic holder for hands-free operation, a built-in battery charger and a robust, ergonomic housing. It is suited to testing on CAT IV installations, such as the distribution side of installations and industrial plants. Test results are stored in a two-level memory structure, 1900 measurements in total, and can be downloaded through USB or RS232 with the EuroLink PRO PC software.

Technical specifications

Parameter	Specification
Insulation, 50 / 100 / 250 V DC	0.00 to 199.9 MOhm; EN 61557 range 0.25 to 199.9 MOhm; accuracy +/-(5 % of reading + 3 digits) up to 19.99 MOhm
Insulation, 500 / 1000 V DC	0.00 MOhm to 29.9 GOhm; EN 61557 range 0.15 MOhm to 30 GOhm; accuracy +/-(5 % of reading) to 999 MOhm, +/-(10 %) 1.00 to 4.99 GOhm, +/-(20 %) 5.00 to 19.99 GOhm
Insulation test source	Open-circuit voltage -0 % / +20 % of nominal; measuring current min. 1 mA at RN = UN x 1 kOhm/V; short-circuit current max. 3 mA; auto discharge after test
Continuity 200 mA	0.00 to 1999 ohm; EN 61557 range 0.16 to 1999 ohm; open-circuit 6.5 to 9 V DC; lead compensation up to 5 ohm; automatic polarity reversal
Continuity 7 mA	0.0 to 1999 ohm; short-circuit current max. 8.5 mA
Voltage (TRMS)	0 to 550 V, 0 Hz and 15 to 500 Hz; nominal range 10 to 550 V
Frequency	0.00 to 500 Hz, +/-(0.2 % of reading + 1 digit)
Standards	IEC/EN 60364, VDE 100, BS 7671 17th edition, CEI 64.8; IEC/EN 61557 parts 1, 2, 10; IEC/EN 61010-1; IEC/EN 61326
Power supply / battery life	6 x 1.5 V AA or rechargeable cells; typically 13 h (over 1200 insulation tests or 2000 RLOW tests)
Overvoltage category / protection	CAT III 600 V, CAT IV 300 V; double insulation; pollution degree 2; IP 40
Memory / communication	1900 measurements; 115200 baud RS232, 256000 baud USB
Dimensions / weight	14 x 8 x 23 cm (w x h x d); 0.80 kg without batteries

Typical jobs and what is in the box

Metrel lists PE conductors and main and supplementary PE connections, troubleshooting of connectivity and polarity, insulation resistance, observation of insulation trends, and insulation of control, signal and telecom wiring at 50 and 100 V among the applications. For general installation work the 1000 V range covers the usual low-voltage test, and the 30 GOhm upper limit leaves headroom for dry, healthy cable.

The standard set contains the instrument, a soft hand strap, a universal 3 x 1.5 m test cable, two test tips and two alligator clips (black and red), a power adapter with six NiMH AA batteries, an instruction manual and a short manual, the product verification data and the handbook Guide for testing and verification of low voltage installations on CD. Optional accessories include 4 m and 20 m test leads (A 1154, A 1153), a magnetic contact probe (A 1198), tip commanders (A 1244, A 1270), a fast charger (A 1160), carrying bags and the EuroLink PRO or PRO Plus PC software packages.

What to confirm before ordering

Confirm the highest insulation test voltage your procedure calls for: 1000 V is the maximum on this model, so equipment tested at 2.5 kV or 5 kV needs a different instrument. Decide whether you need the PC software package and cable, longer leads, a magnetic probe or a larger carrying bag, and whether the set must include a manufacturer certificate. Metrel notes that photographs may differ slightly from delivered instruments and that specifications can change without notice.

Documents and quotation

The Metrel leaflet is attached as a datasheet. Other portable testers are grouped in the portable test and measurement category, including the Fluke 1507 insulation resistance tester for a comparison of ranges. Send the model, accessories and quantity and Seven Star LLC will quote against that request.

Datasheets & Documents

Datasheet Metrel MI 3121 SMARTEC product leaflet (PDF) Download

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About brand

Metrel is a Slovenian manufacturer of electrical measuring and testing instruments, established in 1957 and based in Horjul. Seven Star LLC lists Metrel installation testers, high-voltage insulation testers, earth testers, micro-ohm meters and power quality analysers, and supplies Metrel instruments to electrical contractors, utilities and maintenance teams in Oman and the GCC.

Metrel instrument groups on this page

Installation testers: MI 3152 EurotestXC, MI 3155 EurotestXD and the MI 3121 insulation and continuity tester for low-voltage installation verification.
Insulation and micro-ohm testers: TeraOhm 5 kV and 10 kV instruments (MI 3201, MI 3205, MI 3211) and the MI 3242 MicroOhm 2A.
Earth testers: MI 3290 Earth Analyser and MI 3288 Earth Insulation Tester.
Power quality analysers: MI 2892 Power Master, MI 2893 Power Master XT and MI 2885 Master Q4.

Ordering Metrel instruments: what we need

Give the complete model name and the set you want, because Metrel sells most instruments as standard, Euro or advanced sets with different leads, clamps and software licences. List the accessories separately (longer leads, current clamps, adapters), and state the standard your testing must follow. If you are unsure of the model, describe the installation, the test voltage and the measurements required.

Browse Metrel products by category: Portable Test & Measurement.