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Resistance

that which keeps current from flowing freely.

See Also: Resistivity, Resistance Standards, Resistance Meters, Resistance Test, 4-wire


Showing results: 2416 - 2430 of 2655 items found.

  • Linear Power Supplies Precision, Analog or Local Control, Ultra Low Ripple/Noise

    Series ATE - Kepco, Inc.

    Series ATE linear power supplies are precision analog-controlled power supplies. They feature high gain and zeroable offsets to follow voltage signals or variable resistance controls precisely. An optional fast mode provides fast programming response into the mid audio range, providing active down programming and active up programming. The voltage and current channels are equally controllable with automatic crossover between modes. These power supplies offer ultra low noise and ultra low ripple at the output and are MIL-STD-461 compliant.

  • CT Ratio/Burden Tester

    1047 - The Eastern Specialty Company

    TESCO’s new CT Ratio/Burden Tester (Catalog No. 1047) is a lightweight, portable and highly accurate in-service test set to assist in finding lost revenue by testing the accuracy of your meter circuits. The Tester can help determine if there are installations errors, loose connections, incorrect ratios, resistance buildup, open CT’s, or manufacturers defects. The CT Ratio/Burden Tester measures and displays the primary and secondary current of the CT under test, and the ratio of the currents. All test data is stored in the internal memory and easily uploaded to a PC.

  • PID Insulation Tester

    TOS7210S - Kikusui Electronics Corp.

    The PID insulation tester (TOS7210S) is designed based on the insulation resistance tester (TOS7200) to carry out the evaluation of the PID (Potential Induced Degradation) effect of the PV module precisely and efficiently. Being equipped with the output ability of 2000 V and the ammeter with nA resolution as well as a polarity switching function, the TOS7210S is also applicable not only to the PID evaluation but also the evaluation of the insulators that requires a high sensitivity of measurement. The tester is equipped with the panel memory that is externally accessible and RS232C interface as standard; it can be flexibly compatible with the automated system.

  • Micro-Ohmmeters

    IBEKO Power AB

    Contact resistance measurement is one of the most important and common tests during switchgear manufacturing, commissioning and maintenance stages. Besides switchgear testing, the RMO digital micro-ohmmeters are designed for simple, safe and efficient testing of:disconnecting switches,high-current bus bar joints,cable splices,welding joints,and different high-current links in factory and high-induction field environments.All DV Power RMO micro-ohmmeters use Kelvin’s 4-point measurement principle which is the most convenient for very small resistance measurements. The measurements are accurate and in accordance with international standards for AC high-voltage circuit breakers testing (IEEE C37.09 and IEC 62271-100).Starting from 2003, DV Power has been a trend-setter on the market when our first 500 A micro-ohmmeter weighing only 8 kg (RMO500A / CPM500) was released.Currently, DV Power products portfolio includes 16 models, divided into 3 series:13 portable models: RMO-A (6) and RMO-G (7) series.6 handheld models: RMO-H (6) seriesThe instruments generate a user-selectable and ripple-free test current up to 800 A in an automatically regulated test ramp. Test current ramping significantly decreases the influence of the magnetic transients to measurement.

  • Multifunction Electrical Installations Meter

    MPI-525 - Sonel S.A.

    Possible measurementsShort-circuit loop measurement:*impedance measurement with 23 A current (44 A phase-to-phase) - short-circuit resistor R=10,*measurement range: 95...440 V, frequency 45...65 Hz,Short-circuit loop measurement with resolution 0,01, in distribution network without tiggering RCD (In30 mA):*automatic calculation of short-circuit, detection of phase voltage and phase-to-phase voltage,*additional UNI-Schuko plug for automatic measurement, AGT adapter for 3 phase network measurement.Testing of general and selective RCD with the rated differential current of 10,30,100,300,500 and 1000 mA. (Type AC, A and B).Measurement of insulation resistance:*with test voltage 250 V, 500 V, 1000 V, 2500 V,*measurement range up to 10G,*automatic discharging after measurement,*automatic measurement of all resistences in 3,4,5-wire cables using optional adapter AUTO-ISO,*acoustic signals in 5 sec intervals for insulation resistance characteristic,*elapsing T1, T2, T3 times (0...600 s) form measurement of absorption coefficients (DAR, PI or Ab1, Ab2)*safety measurement - protection against overvoltage.Measurement of earthing resistance.Bi-directional testing of PE wire continuity using 200 mA current.*Autocalibration of test leads.

  • Protective Bonding Testers

    RMO-E Series - IBEKO Power AB

    The RMO-E instruments are designed and ideal for testing protective bonding (grounding) of equipment following the standard IEC 61010-1. Also, they can measure the resistance of high, middle and low voltage circuit breakers, high-current bus bar joints, cable splices, and welding joints. The instruments accurately measure not only in factory environments but also in high-induction fields and substations.Both models generate a true DC ripple-free (less than 1 %) current with automatically regulated test ramps. During a test, the protective bonding testers automatically generate increasing current before measuring and decreasing current after the measurement. Consequently, this significantly decreases magnetic transients and ensures great accuracy.These instruments can store up to 500 measurements in the internal memory and have a built-in thermal printer available as an option.DV Win software communicates with the RMO-E earth resistance meter via USB or RS232 interface. It allows a user to run the test remotely from PC, as well as to download test results, analyze and generate fully configurable test reports.The RMO-E series contains two models, RMO60E and RMO100E. The main difference between these two models is in the maximal test current:60 A DC for RMO60E100 A DC for RMO100E

  • Ignition Pulse Detector

    IP-292/296 - Ono Sokki

    These detectors are electromagnetic induction type detector designed to detect the number of ignition pulses produced in the gasoline engines. The IP-292 pinches a primary cord (low voltage) and the IP-296 pinches a secondary cord (high voltage) of the ignition coil. The compact, light-weight and clip-on design of these detectors offer a simple and easy detection of the number of pulse. Since the detector and its cord are made of heat resistance materials, these models are not affected by the high temperature in the engine room. These detectors are used with the engine tachometers made by Ono Sokki. (AR-7240B, CT-6700, HT-6200, SE-1620, FT-2500 or GE-2500)

  • Standard Digital Multimeter - Auto Ranging

    MM39 - Martindale Electric Co. Ltd

    The MM39 is an auto-ranging multimeter with a large rotary switch for easy selection of the required test, even when wearing gloves. There are two test buttons, one to lock the range and the other to hold the results which are displayed on a 3½ digit LCD screen.

    The main test functions are AC voltage and DC voltage and current and resistance. The MM39 measures both AC and DC voltage between 0.1mV to 600V and AC and DC current between 10mA to 10A. There is a diode test and an audible continuity test which sounds at less than 25Ω.

  • PXI Single 32x8 Matrix, 1 Pole Switching

    40-531-021 - Pickering Interfaces Ltd.

    Model 40-531 very high density matrix modules are configured as a 32x8, while the 40-532 modules are configured as a Dual 16x8. Both modules are available in a choice of reed relay formats: 1-pole, 2-pole and 1-Pole screened. The screened version is suitable for switching coaxial signals up to 50MHz. Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability Sputtered Ruthenium Reed Relays, offering 109 operations to give maximum switching confidence with long life and stable contact resistance.

  • PXI Dual 16 x 8 Matrix 1 Pole Screened

    40-532-021-S - Pickering Interfaces Ltd.

    This high-density reed relay matrix with 256 crosspoints. This model is configured as a Dual 16x8, model 40-531 is configured as a 32x8. Both modules are available in a choice of reed relay formats: 1-pole, 2-pole and 1-Pole screened. The screened version can be used for switching coaxial signals up to 50MHz. Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability Sputtered Ruthenium Reed Relays, offering 109 operations to give maximum switching confidence with long life and stable contact resistance.

  • PXI Single 32x8 Matrix, 1 Pole Screened

    40-531-021-S - Pickering Interfaces Ltd.

    Model 40-531 very high density matrix modules are configured as a 32x8, while the 40-532 modules are configured as a Dual 16x8. Both modules are available in a choice of reed relay formats: 1-pole, 2-pole and 1-Pole screened. The screened version is suitable for switching coaxial signals up to 50MHz. Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability Sputtered Ruthenium Reed Relays, offering 109 operations to give maximum switching confidence with long life and stable contact resistance.

  • PXI Dual 16x8 Matrix, 1 Pole Switching

    40-532-021 - Pickering Interfaces Ltd.

    This high-density reed relay matrix with 256 crosspoints. This model is configured as a Dual 16x8, model 40-531 is configured as a 32x8. Both modules are available in a choice of reed relay formats: 1-pole, 2-pole and 1-Pole screened. The screened version can be used for switching coaxial signals up to 50MHz. Typical applications include signal routing in Functional ATE and data acquisition systems. These PXI matrix modules are constructed using high reliability Sputtered Ruthenium Reed Relays, offering 109 operations to give maximum switching confidence with long life and stable contact resistance.

  • Palm Size Digital Multimeter, Calibrated, 1999 Count, Mean Value, Manual Range, 3.5 Digit

    72-7770 CAL - Tenma

    The 72-7770 CAL from Tenma is a palm sized digital multimeter with 3 3/4 digit LCD. It is 3 1/2digits with steady operations, fashionable design and highly reliable hand held measuring instrument. The meter measures AC/DC voltage, AC/DC current, resistance, temperature, diode and continuity. It is an ideal tool for maintenance. The multimeter features square wave output, data hold, low battery indicator and display backlight, This meter complies with the standards CE, IEC61010, in pollution degree 2, overvoltage category (CAT I 600V, CAT II 300V) and double insulation.

  • Building Electronic Thermometer

    NF-514 - Shenzhen Noyafa Electronic CO.,LTD

    *Cement Concrete Professional Thermometer.*Built-in LCD Lighting Function: Working in harsh environments, clear readings.*Exquisite material selection and lightweight design.*Built-in Temperature Measuring Line, Durable and High Temperature Resistance.*Embedded Line Asphalt Temperature Measurement.*Small size,light weight, easy to carry, suitable for construction sites and field operations.*Certification. Passes RoHS, FCC, and CE compliance testing, and Noyafa is certified to the ISO 9001 standard.*100% Affordable. Manufactured in China and a lot cheaper than competitor products with similar quality.

  • High Voltage EMC Surge Generator

    TM510 - T&M Tools Limited Co

    TM510 Surge Generator is mainly used for testing power cable high-resistance and arc-over fault whose grade range is 0-10kV, co-operating with cable fault tester and locating devices to test and locate faults. If the user choose the professional digital milli-ampere-meter, as for cable with grade range about 0- 6kV, the instrument can also be used to do DC&voltage resistance test and current leakage test after the fault is repaired. The instrument is internally equipped with voltage-rise rectifying and discharging device, has complete functions, and is also convenient and safe to be wired and operated.

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