NEW. 2 A Low resistance. ohmmeter. MI 3242 MicroOhm 2A

Transcription

1 MI 3242 MicroOhm 2A 2 A Low resistance ohmmeter NEW MI 3242 MicroOhm 2A is a portable low resistance ohmmeter used to measure low resistances of switches, relays, connectors, bus bars, power distribution cable joints, motor & generator winding, power transformers, power inductors, rail track joints, wire and cable resistance, welding joints for industrial application, etc., with test current up to 2A MEASURING FUNCTIONS: Bidirectional resistance measurement from 1 μω up to 199,9 Ω with test current up to 2 A KEY FEATURES: High overvoltage protection (CAT III / 600 V) allows measurement in substations and other points with low line resistance. Internal protection cicuit protects user and instrument from inadvertent connection to lines. 50 Hz / 60 Hz ripple detection and rejection. When powered from internal battery it enables more than 800 measurements of 500 mω load 2 A test current & 15 s measurement duration. Pre-programmed limits with PASS/FAIL evaluation of measurement result and bright GREEN/RED indicators providing visual evaluation of the results. Large 128 x 64 dots matrix display with backlight offers easy to read results and all associated parameters. Lightweight portable design. 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. APPLICATION: Measuring of the resistance of: In inductive mode: Motor & generator winding Power transformer Power inductors Wire & cable resistance In resistance mode: Ralays Switches Connectors Busbars Power distributor cable joints Welding joints STANDARDS: Electromagnetic compatibility: EN Class A Safety (LVD): EN EN EN

2 TEST MODES: Manual mode is initiated by pressing the Test button after connecting the test leads to the unit under test. Continuity of C1 and C2 connectors is checked. Current is applied in both forward and reverse direction. Automatic mode: test starts automatically when probes are connected. Current is applied in both forward and reverse direction. Continuous mode allows repeated measurements to be made on the same sample. The measurement is updated every three seconds. Inductive mode is used for measuring resistance of inductive loads like motors and generators. Instrument generates selected current in one direction and waits voltage to stabilize, before measurement is preformed. To provide safety after measurement is completed instrument is equipped with auto-discharge facility. TECHNICAL SPECIFICATION Function Range Resolution Accuracy Test current mω 1 µω mω 10 µω 2 A mω 100 µω mω 10 µω Resistance mω 100 µω ±(0.25 % of reading 100 ma Ω 1 mω + 2 digits) Ω 10 mω mω 100 µω Ω 1 mω Ω 10 mω 10 ma Ω 100 mω Voltage V ±(2 % of reading V + 2 digits) Frequency Hz ±(0.2 % of reading Hz + 1 digit) ORDERING INFORMATION: MI 3242 Instrument MI 3242 MicroOhm 2A Test cable 4 wire, 2.5 m Crocodile clip, 4 pcs (2x black, 2x red) Test probe, 2 pcs (black) Power supply adapter 1.2 V NiMH rechargeable battery, 6 pcs RS232 serial cable USB cable Soft carrying bag PC SW HVLink PRO Instruction manual Calibration certificate OPTIONAL ACCESSORIES: Standard set Photo Order No. Acc. decription A 1407 Test cable Kelvin 500 A, 2,5 m GENERAL SPECIFICATION Power supply voltage: 9 VDC (6 x 1.5 V battery or accu, size AA) Idle state: > 25 h Measurements: > 800 measurements of 500 mω load 2A test current & 15s measurement duration. Overvoltage category: CAT IV / 300 V; CAT III / 600 V Protection degree: IP 40 Display: 128x64 dots matrix display with backlight Dimensions (w x h x d): 140 mm x 80 mm x 230 mm Weight: 1.0 kg, without battery cells and accessories Connection: RS232 & USB Memory: 1500 storage locations (512 kb) A 1408 Test cable Kelvin, 2,5 m Measuring and Regulation Equipment Manufacturer METREL d.d. Ljubljanska 77 SI-1354 Horjul Tel: (0) Fax: (0) metrel@metrel.si Note! Photographs in this catalogue may slightly differ from the instruments at the time of delivery. Subject to technical change without notice.

3 MI 3250 MicroOhm 10A 10 A Low resistance ohmmeter NEW MicroOhm MI 3250 is portable low resistance ohmmeter for measuring low resistances of breakers and switches, busbars, cable joints, small to medium sized transformer and motor windings for industrial application, etc., with test current up to 10 A. MEASURING FUNCTIONS: Bidirectional resistance measurement from 0,1 µω up to 2000 Ω with test current up to 10 A; Temperature compensation (with optional temperature probe). KEY FEATURES: Highly efficient 10 A current source generates 10 A into 200 mω load for 15 min without overheating. High overvoltage protection (CAT IV / 300 V) allows measurement in substations and other points with low line resistance. Internal protection cicuit protects user and instrument from inadvertent connection to lines. 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. Instrument can be normally used while built-in fast battery charger charges the NiMh batteries. Large 320 x 240 dots matrix LCD offers easy-to-read results and all associated parameters. Lightweight portable design. 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. APPLICATION: Measurement of the resistance of: Bus bar joints Motor and transformer windings Cables Fuses Aircraft frame bonds Rail and pipe bonds Lightning conductor bonding STANDARDS: Electromagnetic compatibility: IEC Safety (LVD): EN EN

4 TEST MODES: Manual mode is initiated by pressing the Test button after connecting the test leads to the unit under test. Continuity of C1 and C2 connectors is checked. Current is applied in both forward and reverse direction. Automatic mode: test starts automatically when probes are connected. Current is applied in both forward and reverse direction. Continuous mode allows repeated measurements to be made on the same sample. The measurement is updated every three seconds. Inductive mode is used for measuring resistance of inductive loads like motors and generators. Instrument generates selected current in one direction and waits voltage to stabilize, before measurement is preformed. To provide safety after measurement is completed instrument is equipped with auto-discharge facility. Range 2mΩ 20mΩ 200mΩ 2 Ω 20 Ω 200 Ω 2 kω Auto Test Mode Single Auto Continous Inductive Current 10A 10A 1A 10A 1A 100mA 1 A 100mA 10mA 100mA 10mA 1mA 10mA 1mA 1mA Set Max Current Messages: High Voltage Pass/Fail Battery Low Out of limit High Resistance High Temperature Meas. In Progress ORDERING INFORMATION: MI 3250 Standard set Instrument MI 3250 Test cable, 2 m, with Kelvin Clip, 2 pcs Test cable, 2 m, 4 pcs (2 x black, 2 x red) Crocodile clip, 4 pcs (2 x black, 2 x red) Test probe, 2 pcs (red, black) Mains cable USB cable RS232 cable NiMH rechargeable batteries, type C, 6 pcs PC SW HVLink PRO Bag for accessories Instruction manual Calibration certificate TECHNICAL SPECIFICATION Function Range Resolution Accuracy Test current 1,9999 mω 19,999 mω 199,99 mω 1,9999 Ω Resistance 19,999 Ω 19,999 Ω 199,99 Ω 199,99 Ω 1,9999 kω Power supply (mains voltage) Power supply (batteries) Operation Overvoltage category Protection class Display Communication Memory Dimensions Weight 0,1 µω 1 µω 10 µω 100 µω 1 mω 10 mω 10 mω 100 mω 1 Ω ±(1% Rdg + 0,1% FS) ±(1% Rdg + 0,25% FS) ±(1% Rdg + 0,25% FS) VAC / 60 VA 6 x 1,2 V NiMH 3500 mah batteries, type C > 1000 single measurements CAT IV / 300 V Double insulation 320 x 240 LCD with backlight RS232 and USB 1000 memory locations 310 x 130 x 250 mm 2.8 kg 10 A 10 A/1 A 10 A/1 A/100 ma 1 A/100 ma/10 ma 100 ma/10 ma 1 ma 10 ma 1 ma 1 ma OPTIONAL ACCESSORIES: Photo Order No. Acc. decription S 1072 A 1383 A 1333 Continuity test lead, with crocodile clip, 2 x 2.5 m, 2 pcs Temperature probe with 3 m cable Resistor SHUNT 750 µω Measuring and Regulation Equipment Manufacturer METREL d.d. Ljubljanska 77 SI-1354 Horjul Tel: (0) Fax: (0) metrel@metrel.si Note! Photographs in this catalogue may slightly differ from the instruments at the time of delivery. Subject to technical change without notice.

5 MI 3252 MicroOhm 100A Accurate low resistances measurement NEW MI 3252 MicroOhm 100A is a portable low resistance ohmmeter used to measure low contact resistances of breakers and switches, busbars using test current from 100 ma to 100 A. MEASURING FUNCTIONS: Resistance measurement: wide measuring range (10 µω Ω) with high accuracy 0.25 % of reading and resolution down to 1 nω, adjustable test current (100 ma A); Voltage drop measurement; Bar graph: on screen resistance bar graph. KEY FEATURES: Safe: sustain external voltages in case of wrong connection, protection level (CAT IV, 50 V); automatically detects continuity in current circuit. Single and continuous measuring mode. Portable: rugged carrying case with a handle and lightweight design enable easy moving the instrument between sites. High protection degree: IP 64. Custom limits: the limits can be set for PASS or FAIL evaluation of test result. Battery powered: the instrument enables measurements with 100 A for up to 10 minutes when powered from internal battery only. Memory: built-in memory enables storage of up to 1000 test results. Downloadable: downloads test results via RS232 or USB cable directly to the PC with the help of the software. APPLICATION: Measurement of the resistance of: High, middle and low voltage circuit breakers High, middle and low voltage disconnecting switches High current bus bar joints Cable splices Welding joints STANDARDS: Functionality: IEC ; IEC ; ANSI C37.09; ASTM B 539; Spain: El Real Decreto 223/2008 Electromagnetic compatibility: IEC Safety (LVD): EN

6 Technical Specification Ordering information: MI 3252 Standard set Function Range Resolution Accuracy Current Resistance Function Voltage Power supply Battery 10, ,999 μω 0, ,99999 mω 2, ,9999 mω 20, ,999 mω 0, ,99999 Ω 2, ,9999 Ω Res. range 200 μω 2 mω 20 mω 200 mω 2 Ω 20 Ω Overvoltage category Display Communications Memory Dimensions Weight 1 nω 10 nω 100 nω 1 µω 10 µω 100 µω ±0,25% of reading 100 A 100 A / 50 A 50 A / 10 A 1 / 10 A 1 A / 100 ma 100 ma Voltage range Resolution Accuracy Current 1,000 mv 20,000 mv 20,00 mv 200,00 mv 10,00 mv 100,00 mv 100,0 mv 1,0000 V 20,0 mv 200,0 mv 200,0 mv 2,0000 V 20,0 mv 200,0 mv 200,0 mv 2,0000 V 20,0 mv 200,0 mv 200,0 mv 2,0000 V 230 / 115 VAC 12 VDC / 12 Ah 50 V / CAT IV 1 µv 10 µv 10 µv 320 x 240 LCD with backlight 2 x RS232 and USB 512 kb (1000 test results) 410 x 175 x 370 mm 11,8 kg ±0,25% of reading 100 A 100 A 50 A 50 A 10 A 1 A 10 A 1 A 100 ma 100 ma MI 3252 MicroOhm 100A Current test lead with crocodile clip, 5 m, 25 mm 2, 2 pcs Potential test lead, 5 m, 2 pcs (red, black) Test probe, 2 pcs (red, black) Crocodile clip, 2 pcs (red, black) Mains cable RS232 cable USB cable Bag for accessories PC SW HVLink PRO Instruction manual Calibration certificate Typical applications MI 3252 MicroOhm 100A can help you to find issues typically related with high contact resistance in circuit breakers, bus bars, weld joints, ground bonds. Those issues can lead to apparatus failure and damage of nearby components. Optional accessories: Photo Order No. Decription S 2046 Current test lead with insulated crocodile clip, 5 m, 25 mm2, 2 pcs A 1333 Resistor SHUNT, 750 µω Example 1: Testing the contact resistance of high voltage circuit breaker. According to the IEC this test should be performed with 50 A test current at least. Example 2: Testing the bus bar contact resistance. By using higher currents bus bar resistance under similar condition as in normal use can be observed. This will give you more reliable result and easy decision about necessary maintenance. Measuring and Regulation Equipment Manufacturer METREL d.d. Ljubljanska 77 SI-1354 Horjul Tel: (0) Fax: (0) metrel@metrel.si Note! Photographs in this catalogue may slightly differ from the instruments at the time of delivery. Subject to technical change without notice.