Metrel MI3250 Precision Resistance Microohmmeter 10A

• Bidirectional resistance measurement from 0,1 µO up to 2000 O
• test current up to 10 A
• Highly efficient 10 A current source generates 10 A into 200 mO load for 15 min without overheating
• High overvoltage protection (CAT IV / 300 V)
• Custom limits can be set for PASS / FAIL evaluation of test result.
• 50 Hz / 60 Hz ripple detection and rejection.
• Instrument can be powered from mains or internal rechargeable battery.
• Up to 1000 test results with timestamp can be stored in internal memory.
• PC SW HVLink PRO enables downloading, review, analyses and printing of test results.

 

• Continuity tests (200 mA, 4 A, 10 A, 25 A).
• Insulation resistance.
• Substitute leakage current.
• Differential leakage current.
• Touch leakage current.
• IEC cord polarity test.
• Leakage and load TRMS current measurement with current clamp.

 

• Insulation resistance with up to 2500V DC voltage
• PI, DAR calculation
• 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

 

• Supports all types of earthing resistance measurements:
• - Standard earthing resistance measurement with spikes
• - Selective earthing resistance test with one current clamp
• - Selective (contactless) earthing resistance with two current clamps
• - Specific earth resistance measurement
• Leakage current tests with current clamps
• Load current tests with current clamps
• High accuracy, very high immunity against external noise
• Preprogrammed limits

 

• Bidirectional resistance measurement from 1 µO up to 199,9 O
• test current up to 2 A
• High overvoltage protection (CAT III / 600 V)
• Internal protection cicuit
• 50 Hz / 60 Hz ripple detection and rejection.
• more than 800 measurements of 500 mO load 8 2 A test current & 15 s measurement duration
• Pre-programmed limits with PASS/FAIL evaluation of measurement result
• Up to 1500 test results with timestamp can be stored in internal memory.
• PC SW HVLink PRO enables downloading, review, analyses and printing of test results.

 

• Functional and visual inspection
• Earth bond resistance
• Insulation resistance
• Insulation resistance of isolated accessible conductive parts
• Substitute leakage current
• Substitute leakage current of isolated accessible conductive parts
• Differential leakage current test
• Touch leakage test
• PRCD test

 

• Measurements on DC side of PV installation:
• Voltage, current, power, energy;
• Uoc (Open Circuit Voltage) and Isc (Short Circuit Current);
• I - U curve of PV modules and strings;
• Irradiance;
• Module temperature.
• Measurements on AC side of PV installation:
• Voltage, current, power;
• Efficiency of PV module, inverter, PV system calculation.

 

• 12 V … 1000 V AC measurement range
• Optical and vibrating indication
• CAT III / 1000 V overvoltage protection

 

• Very large LCD display with bargraph and backlight
• High measuring range of up to 30 G? with test voltage from 50 V to 1000 V
• Fast and reliable continuity tests with automatic polarity reversal
• Voltage and frequency measurements
• Preprogrammed limits
• PASS/FAIL evaluation of result
• Bright GREEN/RED indicators provides visual evaluation of results
• Suited for testing on CAT IV installations

 

• Insulation Resistance: Three different test voltages (250, 500 and 1000 V)
• Continuity: 200 mA measurement with automatic polarity change.
• RMS Voltage and Frequency
• Warnings are given if hazardous voltages are detected.
• Auto power-off.