Electrical Testing


Electrical testing is a process of inspection that covers many different areas of the electrical system, such as medical, industrial and automotive, using various testing equipment, such as a Digital Multi-Meter, CRO, Clamp Meter, Insulation tester, etc. These testing tools are used to measure different electrical parameters, such as AC/ DC voltage, current, resistance, capacitance, frequency, continuity, insulation, etc. In an electrical system, regular insulation resistance testing is highly recommended to avoid electrical shocks and ensure safety, which reduces downtime. It helps to check the corrosion of insulation and repair works, s vacuum cleaning, steam cleaning and rewinding can be scheduled. Excessive heat or cold, moisture, corrosive vapours, oil, vibration, aging and nicked wiring are the primary causes of insulation failure. The equipment necessary for insulation resistance tests are a megohmmeter, temperature indicator and humidity meter. The total current in the body of the insulation is the sum of capacitance charging current, absorption current and leakage or conduction current.


Electrical testing confirms that different parts of the system and its features are working correctly. It assures a safe environment free from unnecessary risks. A well planned electrical preventive maintenance schedule can reduce accidents, saves lives and minimize costly breakdowns. Impending troubles can be identified and solved before they become significant problems which may require more expensive, time-consuming solutions.


Electrical safety testing of different testing equipment is essential for safe operating standards which uses electricity. There are various agencies which have established strict requirements for electrical products. It is compulsory for an electrical product to conform to certain safety standards laid down by safety and official agencies, such as UL, CE, VDE, CSA, BSI, CCC, etc. The product must pass safety tests, such as High Voltage test Insulation Resistance test, Ground Continuity test and Leakage Current test. Here we discuss some of the common mistakes while performing electrical measurement with a Multi-Meter. We should not replace the original fuse with a locally made or cheaper one because it will change the safety standards of the Multi-Meter. It should be replaced with an authorized fuse. We should not use a bit of wire or metal to get around the fuse. We should use the appropriate Multi-Meter as per measurement work.


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FLUKE-1AC-A1-II 5 PK
FLUKE-1AC-A1-II 5 PK - Voltage Tester, VoltAlert™, Pack of 5, 90V to 1000V, LED, -10 °C, 50 °C

04M4406

Voltage Tester, VoltAlert™, Pack of 5, 90V to 1000V, LED, -10 °C, 50 °C

FLUKE

VOLTAGE DETECTOR, 90 TO 1000VAC, LIGHT; Voltage Measuring Range AC:90V to 1000V; Meter Display Type:LED; Operating Temperature Min:-10°C; Operating Temperature Max:50°C; Product Range:-; Plug Type:-; Battery Size Code:AAA RoHS Compliant: Yes

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FLUKE-325
FLUKE-325 - Clamp Meter, Auto, True RMS, 400 A AC, 600 V AC, 600 V DC, 30 mm Jaw Opening Max.

88T2549

Clamp Meter, Auto, True RMS, 400 A AC, 600 V AC, 600 V DC, 30 mm Jaw Opening Max.

FLUKE

CLAMP METER, DIGITAL, TRUE RMS; DMM Functions:AC/DC Current, AC/DC Voltage, Capacitance, Continuity, Frequency, Resistance, Temperature; Current Measure AC Max:400A; Voltage Measure AC Max:600V; Voltage Measure DC Max:600V RoHS Compliant: Yes

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    FLUKE-773
    FLUKE-773 - Clamp Meter, AC/DC Current, DC Voltage, 24 mA, 30 V, Average

    09R2351

    Clamp Meter, AC/DC Current, DC Voltage, 24 mA, 30 V, Average

    FLUKE

    MULTIMETER, DIGITAL, CLAMP; DMM Functions:AC/DC Current, DC Voltage; Current Measure AC Max:-; Voltage Measure AC Max:-; Voltage Measure DC Max:30V; Resistance Measure Max:-; DMM Response Type:Average; Range Selection:Auto RoHS Compliant: Yes

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    CB10
    CB10 - Voltage Tester, Circuit Breaker, GFCI, 90V to 120V, 5 °C, 40 °C

    50M8196

    Voltage Tester, Circuit Breaker, GFCI, 90V to 120V, 5 °C, 40 °C

    EXTECH INSTRUMENTS

    CIRCUIT BREAKER/GFCI RCPT TESTER, 120VAC; Voltage Measuring Range AC:90V to 120V; Meter Display Type:-; Operating Temperature Min:5°C; Operating Temperature Max:40°C; Product Range:-; Plug Type:- RoHS Compliant: Yes

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    T+ US
    T+ US - Voltage Tester, T+ Electrical, 12V to 600V, LED, -10 °C, 55 °C

    30M9569

    Voltage Tester, T+ Electrical, 12V to 600V, LED, -10 °C, 55 °C

    FLUKE

    T+ ELECTRICAL TESTER, 12 TO 600V, LED; Voltage Measuring Range AC:12V to 600V; Meter Display Type:LED; Operating Temperature Min:-10°C; Operating Temperature Max:55°C; Product Range:-; Plug Type:-; No. of Batteries:2

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    DVA30
    DVA30 - Voltage Tester, Detector, Current, 12V to 600V, Light

    27K7528

    Voltage Tester, Detector, Current, 12V to 600V, Light

    EXTECH INSTRUMENTS

    VOLTAGE/CURRENT DETECTOR 12 - 600V LIGHT; Voltage Measuring Range AC:12V to 600V; Meter Display Type:Light; Operating Temperature Min:-; Operating Temperature Max:-; Product Range:-; Plug Type:-; Battery Size Code:Coin Cell RoHS Compliant: Yes

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    380947
    380947 - Clamp Meter, Auto, True RMS, 400 A AC, 23 mm Jaw Opening Max.

    27K9639

    Clamp Meter, Auto, True RMS, 400 A AC, 23 mm Jaw Opening Max.

    EXTECH INSTRUMENTS

    MULTIMETER, DIGITAL, CLAMP, 3-3/4 DIGIT; DMM Functions:AC/DC Current, Frequency; Current Measure AC Max:400A; Voltage Measure AC Max:-; Voltage Measure DC Max:-; Resistance Measure Max:-; DMM Response Type:True RMS; Product Range:-

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    AC40C
    AC40C - Clamp Meter, True RMS, 400 A AC, 600 V AC, 600 V DC, 25.4 mm Jaw Opening Max.

    47T1936

    Clamp Meter, True RMS, 400 A AC, 600 V AC, 600 V DC, 25.4 mm Jaw Opening Max.

    AMPROBE INSTRUMENTS

    MULTIMETER, DIGITAL, AUTO/MANUAL, CLAMP; DMM Functions:AC Current, AC/DC Voltage, Continuity, Resistance; Current Measure AC Max:400A; Voltage Measure AC Max:600V; Voltage Measure DC Max:600V; Resistance Measure Max:400ohm

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    72-7228
    72-7228 - Clamp Meter, Auto, True RMS, 1 kA AC, 600 V AC, 600 V DC, 55 mm Jaw Opening Max.

    01N4892

    Clamp Meter, Auto, True RMS, 1 kA AC, 600 V AC, 600 V DC, 55 mm Jaw Opening Max.

    TENMA

    MULTIMETER, DIGITAL, CLAMP, 3-5/6 DIGIT; DMM Functions:AC/DC Current, AC/DC Voltage, Continuity, Diode, Frequency, Resistance; Current Measure AC Max:1kA; Voltage Measure AC Max:600V; Voltage Measure DC Max:600V; Range Selection:AutoRoHS Compliant: Yes

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    ACD-14-PRO
    ACD-14-PRO - Clamp Meter, Auto, True RMS, 600 A AC, 600 V AC, 600 V DC, 30 mm Jaw Opening Max.

    76Y6229

    Clamp Meter, Auto, True RMS, 600 A AC, 600 V AC, 600 V DC, 30 mm Jaw Opening Max.

    AMPROBE INSTRUMENTS

    DMM, CLAMP, HVAC, 600V, 600A, AUTO, TRMS; DMM Functions:AC/DC Current, AC/DC Voltage, Capacitance, Continuity, Diode, Frequency, Resistance, Temperature; Current Measure AC Max:600A; Voltage Measure AC Max:600V; Range Selection:Auto

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    LVD1A
    LVD1A - Voltage Tester, Detector, 40V to 300V, LED, 0 °C, 50 °C

    59Y6552

    Voltage Tester, Detector, 40V to 300V, LED, 0 °C, 50 °C

    FLUKE

    VOLTAGE DETECTOR, 40 TO 300VAC; Voltage Measuring Range AC:40V to 300V; Meter Display Type:LED; Operating Temperature Min:0°C; Operating Temperature Max:50°C; Product Range:-; Plug Type:- RoHS Compliant: Yes

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    FLK-A3004FC
    FLK-A3004FC - Clamp Meter, Auto, True RMS, 4.5 mm Jaw Opening Max.

    48Y3977

    Clamp Meter, Auto, True RMS, 4.5 mm Jaw Opening Max.

    FLUKE

    WIRELESS DC CURRENT METER, 0.004-0.02A; DMM Functions:DC Current; Current Measure AC Max:-; Voltage Measure AC Max:-; Voltage Measure DC Max:-; Resistance Measure Max:-; DMM Response Type:True RMS; Range Selection:Auto, Manual RoHS Compliant: Yes

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    FLUKE-1630-2 FC
    FLUKE-1630-2 FC - Earth Ground Tester, Ground Resistance, Leakage Current, Current, 0.025ohm to 1.5kohm, 1 kHz

    11AC0585

    Earth Ground Tester, Ground Resistance, Leakage Current, Current, 0.025ohm to 1.5kohm, 1 kHz

    FLUKE

    EARTH GND RESISTANCE METER, 1K5, 1KHZ; Measuring Functions:Ground Resistance, Leakage Current, Current; Resistance Measurement Range:0.025ohm to 1.5kohm; Resistance Measurement Frequency:1kHz; Product Range:- RoHS Compliant: Yes

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    MIT515 CAL DU
    MIT515 CAL DU - Insulation Tester, Calibrated w/D & U, Digital Megohmmeter, 250V, 500V, 1kV, 2.5kV, 5kV

    12AC8401

    Insulation Tester, Calibrated w/D & U, Digital Megohmmeter, 250V, 500V, 1kV, 2.5kV, 5kV

    MEGGER

    INSULATION TESTER CAL W/DU, RES, 5KV; Insulation Tester Type:Digital Megohmmeter; Insulation Testing Voltage:250V, 500V, 1kV, 2.5kV, 5kV; Insulation Testing Resistance:10kohm to 15Tohm; Operating Temperature Min:-20°C; Weight:6.75kg RoHS Compliant: Yes

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    382252
    382252 - EARTH GROUND RESISTANCE TESTER KIT

    11AC0004

    EARTH GROUND RESISTANCE TESTER KIT

    EXTECH INSTRUMENTS

    EARTH GROUND RESISTANCE TESTER KIT; Measuring Functions:2 and 3 Pole; Resistance Measurement Range:20ohm, 200ohm, 2000ohm; Resistance Measurement Frequency:820Hz; Product Range:-; SVHC:No SVHC (20-Jun-2016) RoHS Compliant: Yes

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    ET250
    ET250 - Voltage Tester, 600V, LCD

    22AC9093

    Voltage Tester, 600V, LCD

    KLEIN TOOLS

    AC/DC VOLTAGE/CONTINUITY TESTER, 600V; Voltage Measuring Range AC:600V; Meter Display Type:LCD; Operating Temperature Min:-; Operating Temperature Max:-; Product Range:-; Plug Type:-

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    FLUKE-1621 CAL D
    FLUKE-1621 CAL D - Earth Ground Tester, Calibrated w/Data, 2 and 3 Pole, 0.15ohm to 20ohm, 128 Hz

    12AC7232

    Earth Ground Tester, Calibrated w/Data, 2 and 3 Pole, 0.15ohm to 20ohm, 128 Hz

    FLUKE

    EARTH GROUND TESTER, 2 &3 POLE, CAL D; Measuring Functions:2 and 3 Pole; Resistance Measurement Range:0.15ohm to 20ohm; Resistance Measurement Frequency:128Hz; Product Range:- RoHS Compliant: Yes

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    FLUKE-1507 CAL
    FLUKE-1507 CAL - Insulation Tester, Calibrated, Digital Megohmmeter, 50V, 100V, 250V, 500V, 1kV, 10kohm to 10Gohm

    12AC7213

    Insulation Tester, Calibrated, Digital Megohmmeter, 50V, 100V, 250V, 500V, 1kV, 10kohm to 10Gohm

    FLUKE

    INSULATION RESISTANCE TESTER, CALIBRATED; Insulation Tester Type:Digital Megohmmeter; Insulation Testing Voltage:50V, 100V, 250V, 500V, 1kV; Insulation Testing Resistance:10kohm to 10Gohm; Operating Temperature Min:-20°C RoHS Compliant: Yes

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    FLUKE-381 CAL D
    FLUKE-381 CAL D - Clamp Meter, Auto, True RMS, 2.5 kA AC, 1 kV AC, 1 kV DC, 34 mm Jaw Opening Max.

    12AC7337

    Clamp Meter, Auto, True RMS, 2.5 kA AC, 1 kV AC, 1 kV DC, 34 mm Jaw Opening Max.

    FLUKE

    CLAMP METER/IFLEX, TRUE-RMS, CAL W/DATA; DMM Functions:AC/DC Current, AC/DC Voltage, Continuity, Frequency, Resistance; Current Measure AC Max:2.5kA; Voltage Measure AC Max:1kV; Voltage Measure DC Max:1kV; DMM Response Type:True RMS RoHS Compliant: Yes

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    CM42
    CM42 - Clamp Meter, Auto, True RMS, 400 A AC, 600 V AC, 600 V DC, 30 mm Jaw Opening Max.

    98Y1642

    Clamp Meter, Auto, True RMS, 400 A AC, 600 V AC, 600 V DC, 30 mm Jaw Opening Max.

    FLIR

    DMM, CLAMP, MANUAL, 400A, 5/6 DIGIT; DMM Functions:AC Current, AC/DC Voltage, Capacitance, Frequency, Resistance; Current Measure AC Max:400A; Voltage Measure AC Max:600V; Voltage Measure DC Max:600V; Resistance Measure Max:60kohm RoHS Compliant: Yes

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