Resistance Test
measured in ohms is the ability of a current to conduct.
See Also: Resistance, Resistivity, Resistance Standards, Resistance Meters, Battery Internal Resistance Testers
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Contact Resistance Test Sets
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When a high current passes through a pair of mechanically independent metallic contacts, the resistance must be as low as possible. An increase in resistance can lead to additional degradation, as I2R losses will cause local heating of the contact surfaces. Our range of micro-ohmmeters measure both steady state and dynamic low resistance values. With test currents up to 600A available, logging and trending are also available on some models. We ensure that our Contact Resistance tests sets are portable, making them suitable for field measurements. Our contact resistance testers’ portability makes them ideal for a vast range of resistance testing across the entire LV, MV HV and EHV spectrum.
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Xenon Lamp Weather Resistance Test Chamber
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SN Xenon lamp test chamber adopts the Xenon ARC lamp that can simulate full sunlight spectrum to reproduce destructive light waves existing in different environments so as to provide the corresponding environment simulation and acceleration test for scientific research, product development and quality control.
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Floor Resistance Test Kit
PMK-152
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The PMK-152 Floor Resistance Test Kit contains the instruments you need to take resistance measurements.The PMK-152 includes Prostat's PRS-812 Resistance Meter with 5 pound conductive rubber electrodes. You can take measurements at 10 and 100 volts with accuracy within ±5%.
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Insulation Resistance Test Instrument
2681
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Shenzhen Chuangxin Instruments Co., Ltd.
Insulation Resistance Test Instrument
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Low Resistance Test System
9100-2
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Palico Instrument Laboratories
The Model 9100-2 measures the resistance of single or multiple battery separators quickly and accurately when used with our Model 9000-9100 Electrolyte Test Bath. This system uses a 4-terminal measurement technique which cancels the effects of electrode/electrolyte potentials.
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Sand Test Chambers
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Labodam sand and dust test chambers are corrosion resistant equipment that tests the stability, quality, reactivity, and characterists of products against the sand and dust exposed environmental conditions. These test chambers are carefully designed as per the CE and ISO standards and provide rpotection against current leakage, overload, over-current, short circuit, over temperature, motor overheating, and over pressure for safe and precise results.
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Igniter Testers
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Igniter Tester is a failsafe and portable digital ohmmeter specifically designed for ultra-safe resistance testing on squibs, flares, bridge-wire, and other explosive devices. The 620A-4 ohmmeter has been approved by the USAF Non-Nuclear Munitions Safety Board for usage on all non-nuclear munitions, and independently certified to meet Mil. Std. 810 Mtd. 511 for usage in fuel-filled environments. Due to its intense self-safety design and numerous certifications, the 620A-4 failsafe ohmmeter is the industry standard for military programs in need of igniter testing.
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Contact Resistance Meter
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The Motwane Manufacturing Company
High contact resistance values are a definite cause of the failure or less than optimal performance in a wide variety of electrical devices. Contact resistance testing is therefore most critical to measure the resistance of electrical connections in switching devices, circuit breakers, isolators, busbars, relays, joints, connectors, cables, and cable joints. The device helps to find destructive or corroded contacts and hence protects substation devices from damage.
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Mini Digital Multimeter
HH2102
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Basic Accuracy 1.0%. LCD display 2000 count, 12.8mm figure height. Manual Ranging at your choice (19 Range). Higher Voltage test up to AC 750V and DC 1000V. Higher Current test up to 10A. Resistance test up to 20MΩ. Signal Injection and Diode test
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[5kV AC/6kV DC] Hipot and Insulation Resistance Tester, Rise/Fall-Time Control Function Equipped
TOS5300 Series
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The "TOS5300 Series" is a series of test instruments used in Hipot (withstanding voltage) tests and insulation resistance tests, two of the four tests regarded as necessary for ensuring the safety of electrical products. With an output of 5 kV/100 mA (AC) and 6 kV/10 mA (DC), the series can be used in Hipot (withstanding voltage) & insulation resistance testing of electronic equipment and electronic parts, based on the requirements of IEC, EN, UL, VDE, JIS, and other international safety standards and the Electrical Appliance and Material Safety Law. Also, the test voltage stability is improved with the adoption of a newly developed switching amplifier. Since the output voltage can be kept constant even when the AC line voltage or frequency changes, consistent testing can be performed, even when the power supply environment is in an unstable region. The TOS5300 is also equipped with a number of features that are capable of meeting a variety of test needs. It is a new low-cost standard model that provides thorough operability, reliability and safety.
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Digital Earth Resistance Tester
8PK-ST1520
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Capable of measuring earth voltage (Vac.) 2mA measuring current permits earth resistance to test without tripping earth leakage current breakers in the circuit. Battery operated. Auto power off function. Data hold function. Small and light weight.
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Surface Insulation Resistance Testing
AutoSIR2™
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One AutoSIR chassis can hold between 1 to 16 measurement cards and can monitor up to 256 x 2-point test patterns or 78 x 5-point test patterns, or 32 x 9-point test patterns at selectable intervals from minutes to days. Each channel is current limited (1 M Ω), ensuring that dendrites are preserved for failure analysis. The frequent monitoring capability provides a full picture of the electrochemical reactions taking place on a circuit assembly, and provides early trend analysis enabling tests to be curtailed, thus saving considerable test time and money.
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Pen Type Digital Multimeter
HH3211D
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High Accuracy (basic accuracy 0.5%). Large LCD display 2000 count. Convenient Auto Ranging. High Voltage test up to AC 600V and DC 600V. Resistance test up to 20MΩ. Diode test and audible continuity check. Low Battery Indication
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Contact Resistance Tester
CRM-200
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Contact Resistance Meter CRM-200 can provide test current up to 200A subject to the load resistance and supply voltage, which is suitable for testing circuit breaker contacts, switch contacts, busbar joints or other applications where high current is needed.Contact Resistance Meter CRM-200 uses a four terminal measurement method to eliminate the resistance of the test leads from the measurement.
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Mini Jumbo LCD Autoranging Multimeter
HH2202
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High Accuracy (Basic Accuracy 1.0%). Jumbo LCD display 4000 count, 21mm figure height. Convenient Auto Ranging. Higher Voltage test up to AC 750V and DC 1000V. Higher Current test up to 10A. Resistance test up to 40MΩ. Diode test, audible continuity check
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AC/DC Programmable Hipot Voltage Insulation Tester 5KV
7122
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Shenzhen Chuangxin Instruments Co., Ltd.
Programmable AC/DC Hipot & Insulation Resistance Tester can do hipot test and insulation resistance test
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Portable Ground Strap Tester
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This Ground Strap Tester provides an inexpensive method for guaranteeing the integrity of wrist straps. This compact, automatic test unit checks the specified resistance limits of all types of wrist straps and other similar personnel grounding devices. Incorporates upper and lower resistance tests.
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FiberScout | Fault Identifier & Singlemode Fibre Length Tester
TS21
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The TS21 Fiber Scout was designed and developed by Yamasaki as a cost effective and simple solution for identifying faults and testing the length of singlemode fibers. This lightweight, rugged, dustproof and water resistant piece of test equipment can list up to 8 results at one time and has three brilliant functions.
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Hand-In Type Electromagnetic Anechoic Box (Shield Box)
MY3720
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Suitable for weak electric field resistance test, out-of-service test or digital forensics for smart phone, tablet terminal or mobile PC ! !DUT can be operated directly with bare hands while placing it in the box and looking at the inside from the shield window.
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Thumpers and Cable Fault Location
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Cable testing can be broken down to different steps of the process, starting with a time domain reflectometer test to look for an incident signal on the line or, in some high resistance situations, VLF testing. These tests will identify a fault, allowing you to move on to pre-locating it. In some low resistance faults this will occur alongside the identification via the TDR.
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Three-Phase Transformer Winding Resistance Meters
TWA Advanced Series
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TWA Advanced series is the latest DV Power solution for three-phase transformer winding resistance measurement and tap changer analysis. They are capable of testing six transformer windings with a single cable connection, as well as three-phase automatic transformer demagnetization. It has the option of the automated test mode, where the instrument operates the tap changer without operator input (minimizing the risk of human error) and records winding resistance results based on pre-selected stabilization criteria.The unique DVtest method of tap changer analysis enables checking the moving contacts of on-load tap changers during the transition, measuring the transition time, detecting open circuits, and many other types of faults. It is performed with 0.1 ms sampling rate, together with the measurement of tap changer motor current which detects motor and mechanical issues. A special proprietary algorithm is used for testing tap changers connected through a built-in series (booster) transformer. The DVtest can be performed either on one phase or simultaneously on three phases. It can also be performed together with the winding resistance test in all tap positions.A unique advantage of TWA Advanced instruments is the capability of simultaneously testing the winding resistance of all three phases of a three-phase transformer connected in a YN configuration. This can significantly speed up the testing– for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.TWA500 is equipped with a large 10.1” graphical touch-screen display, while TWA400 has a 7” graphical touch-screen display. Besides making the interface much more user-friendly compared to older winding ohmmeters, it also enables certain test options that were previously available only with DV-Win software. The most important among them are DVtest, tap changer motor current measurement, “Heat Run” test, test templates, and automatic test mode.
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Digital Multimeters
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Triplett Test Equipment & Tools
compact digital multimeter with a backlit LCD display. It offers a large variety of measurement features including AC/DC Voltage, DC Current, Resistance, Continuity, Diode Test, Transistor hFE, and Temperature. The rubberized boot provides impact and drop resistance in a sleek ergonomic design, and the user-friendly Auto Power Off feature helps maximizes battery life. The Model 1101-B is well suited for a variety of commercial and residential applications such as security, home theater, electrical, HVAC installations and more. Includes test leads with alligator clips, Type K bead probe and battery (9V).
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Current Transformer Analyzer
CT Analyzer
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Current transformer testing in a multifunctional instrument performing excitation, ratio, polarity and winding resistance tests on current transformers as well as burden impedance measurement.
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Transformer Resistance Testing
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Transformer insulation resistance deterioration is one of the most common causes of transformer failure: a failing transformer is a costly replacement in an electrical system with the potential for a long downtime. If you fail to maintain your transformer with regular insulation resistance testing (as can be carried out by the Megger Transformer Ohmmeter (MTO) series of transformer test equipment) then it’s likely to fail before reaching its maximum operating life.
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Wound Component EST Scanner
19035
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The quality verification tests for wound components consist mainly of AC/DC Hipot tests and insulation resistance (IR) tests. The Chroma 19035 wound component EST scanner series perform safety tests for motor, transformer, and heater related wound products.
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Test Probes
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Our innovative Test Probes are the upgrade version of Auto Multi Meter. It can perform multiple circuit system test such as power supply feed, voltage and resistance measurement, continuity test, ground test, polarity check and components activation.
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True RMS Clamp Meter
DL489
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UEi Test & Measurement Instruments
The DL489 True RMS Clamp meter offers contractors better features, functions and safety in a commemorative edition housing. A complete meter with the precision of True RMS and the functionality your job requires. Featuring 600A AC/DC, 750V AC and 1000V DC, resistance, capacitance, diode test, continuity, microamps and LRA Inrush. The DL489 is the complete meter your job requires.
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Primary Current Injection Test Set
T 2000
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T 2000 is a portable current transformer test set which allows to perform many different measurements such as saturation, ratio and polarity tests and CT winding resistance test. Substation maintenance and commissioning test equipment, T 2000 is extremely appreciated by electrical engineers for its high accuracy and portability.
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Salt Spray Test Chamber
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Dongguan Kejian Instrument Co., Ltd.
Corrosion resistance salt spray testing machine can be used to determine the corrosion resistance of inorganic or organic coatings of ferrous or non-ferrous metals, such as electroplating, anodizing, chemical processing, painting and other surface treatments.
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ELECTRONIC MEGOHMMETER
MI-2550e
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The MI-2550e general purposes megohmmeter is a truly portable equipment suitable to measure insulation resistances using test voltages up to 2,5 kV. It employs high-reliable, state-of-the-art technology for accurate measurements of ultra high insulation resistances up to 5.000.000 MΩ with four test voltages: 0,5 kV - 1 kV - 1,5 kV - 2,5 kV.
