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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: 2596 - 2610 of 2647 items found.

  • PXI Device Power Supply - 4 Isolated Channels, 20-bit Measurement Resolution

    52310e series - Chroma ATE Inc.

    Chroma 52310e Series i s a programmabl e PXI-Express DPS (Device Power Supply) Card designed for high-accuracy and reliable output power for device test applications. Its compact size, easy level of integration, and high flexibility make the 52310e Series ideal for multi-channel power supplies. Chroma 52310e Series features 8 selectable control bandwidths to ensure high speed output and stable operation; multiple current measurement ranges with a 20-bit DAC/ADC provide the highest resolution and accuracy with a sampling rate up to 600K S/sec; programmable internal series resistance for battery simulation. Chroma 52310e DPS series has a patented hardware sequence engine that has deterministic t iming to cont rol each DPS channel. The sequencer's on-board memory can store up to 1024 sequencer commands and 32k measurement samples per channel.

  • Digital H.V. Insulation Tester(10kV)

    6310 IN - Standard Electric Works Co., Ltd

    ● 2 Lines × 16 Characters LCD● Microprocessor-controlled● Tests insulation resistance up to 20 TΩ● 4 Insulation test voltages: 1000V, 2500V, 5000V, 10000V● AC / DC Voltmeter (30~600V)● Short-circuit current up to 5mA● PI (Polarization Index) indication● DAR (Dielectric Absorption Ratio) indication● Auto-ranging on all insulation ranges● Optical USB to RS-232 data transmission● Well isolated from contact● Well protected from surges● 2 built-in optical LEDs for data transfer● Visual and audio warning of external voltage presence (≥30Vac or ≥30Vdc)● Auto-hold function to freeze reading● Overload protection● Adjustable testing duration: 1~30 minutes● Internal memory for data storage● Displays testing duration for insulation measurement● Auto-off function● 200 measurement results can be saved in memory and recalled on

  • Digital H.V. Insulation Tester(5kV)

    6305A IN - Standard Electric Works Co., Ltd

    ● 2 Lines × 16 Characters LCD● Microprocessor-controlled● Tests insulation resistance up to 10 TΩ● 4 Insulation test voltages: 500V, 1000V, 2500V, 5000V● AC / DC Voltmeter (30~600V)● Short-circuit current up to 5mA● PI (Polarization Index) indication● DAR (Dielectric Absorption Ratio) indication● Auto-ranging on all insulation ranges● Optical USB to RS-232 data transmission● Well isolated from contact● Well protected from surges● 2 built-in optical LEDs for data transfer● Visual and audio warning of external voltage presence (≥30Vac or ≥30Vdc)● Auto-hold function to freeze reading● Overload protection● Adjustable testing duration: 1~30 minutes● Internal memory for data storage● Displays testing duration for insulation measurement● Auto-off function● 200 measurement results can be saved in memory and recalled on

  • Digital H.V. Insulation Tester(5kV)

    6305 IN - Standard Electric Works Co., Ltd

    ● High contrast OLED display● Microprocessor-controlled● Tests insulation resistance up to 10 TΩ● 4 Insulation test voltages: 500V, 1000V, 2500V, 5000V● AC / DC Voltmeter (30~600V)● Short-circuit current up to 5mA● PI (Polarization Index) indication● DAR (Dielectric Absorption Ratio) indication● Auto-ranging on all insulation ranges● Optical USB to RS-232 data transmission● Well isolated from contact● Well protected from surges● 2 built-in optical LEDs for data transfer● Visual and audio warning of external voltage presence (≥30Vac or ≥30Vdc)● Auto-hold function to freeze reading● Overload protection● Adjustable testing duration: 1~30 minutes● Internal memory for data storage● Displays testing duration for insulation measurement● Auto-off function● 200 measurement results can be saved in memory and recalled on display

  • Digital H.V. Insulation Tester(5kV)

    6304 IN - Standard Electric Works Co., Ltd

    ● 2 Lines × 16 Characters LCD● Microprocessor-controlled● Tests insulation resistance up to 10 TΩ● 4 Insulation test voltages: 500V, 1000V, 2500V, 5000V● AC / DC Voltmeter (30~600V)● Short-circuit current up to 1.9mA● PI (Polarization Index) indication● DAR (Dielectric Absorption Ratio) indication● Auto-ranging on all insulation ranges● Optical USB to RS-232 data transmission● Well isolated from contact● Well protected from surges● 2 built-in optical LEDs for data transfer● Visual and audio warning of external voltage presence (≥30Vac or ≥30Vdc)● Auto-hold function to freeze reading● Overload protection● Adjustable testing duration: 1~30 minutes● Internal memory for data storage● Displays testing duration for insulation measurement● Auto-off function● 200 measurement results can be saved in memory and recalled on display

  • Multifunction Calibrator 15 ppm Basic Accuracy

    MC142 - Powertek LLC

    Multifunction calibrator MC142 is a precision voltage, current and power calibration source serving as a measurement standard in calibration laboratories and production lines; where verification of electrical measurement equipment & sensors is required. It can be used for calibration and adjustment of meters measuring voltage, current, power, resistance, capacitance and frequency. Internal harmonic and non-harmonic signals make it possible to test electrical performance of meters using signals with various crest factors. Frequency modes enable selection of frequency, amplitude and duty cycle of the output signal. These are suitable for basic calibration of digital and analog oscilloscopes along with transient recorders. The calibrator is equipped to measure temperature with TC and RTD temperature sensors. Its built-in multimeter can be used independently or simultaneously with the calibrator output. Testing of transducers of various types, regulators and sensors can be performed, without the necessity to use any other measuring instrument.

  • Near Field Probes 30 MHz up to 3 GHz

    RF2 set - Langer EMV-Technik GmbH

    The RF2 near field probe set consists of 4 passive near field probes for measurements in the development phase of the magnetic field in the range from 30 MHz to 3 GHz on electronic assemblies. The probe heads of the RF2 set allow the step by step localization of interference sources of the RF magnetic field on assemblies. From greater distances the electromagnetic interference can be detected by RF-R 400-1 and RF-R 50-1 probes. The RF-B 3-2 and RF-U 5-2 probes with their higher resolution can more precisely detect the interference sources. Field orientation and field distribution on an electronic assembly can be detected through a trained special use of the near field probe. The near field probes are small and handy. They have a sheath current attenuation and are electrically shielded. They can be connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. They do not have an internal terminating resistance.

  • Micro-Ohmmeters

    RMO-A Series - IBEKO Power AB

    The RMO-A is a portable micro-ohmmeter designed for contact resistance measurements of switchgear during manufacturing, commissioning and maintenance stages. This micro-ohmmeter is widely used by medium and high-voltage circuit breakers manufacturers. Other typical applications are testing of disconnecting switches, high-current bus bar joints, cable splices, and different high-current links. It accurately measures not only in factory environments but also in high-induction fields and substationsThe RMO-A series contains 6 models, rated from 100 A (RMO100A) to 600 A (RMO600A). The RMO500A (formerly CPM500) is our best seller, with 500 A ripple-free current and weighs only 8 kg.Although placed in a very portable and lightweight metal housing, RMO-A micro-ohmmeters have very high output power capabilities. They can generate 600 A test current continuously for up to 20 s. You can test with current up to 100 A without rest time. High output voltage enables a wider measurement range at the highest test currents, as well as the use of thinner/longer test cables. For testing with 100 A, 20 m test leads can be provided with only 16 mm2 cross-section.RMO-A micro-ohmmeter generates a true DC ripple-free (less than 1 %) current with automatically regulated test ramps. During a test, the RMO-A ramps up with increasing current before measuring and decreasing current after the measurement. This significantly decreases magnetic transients and ensures great accuracy.An additional option is a built-in High Precision module suitable for measurement of very low resistances, ranges from 1 to 30 µΩ, with 0,01 µΩ resolution.These instruments can store up to 500 measurements in internal memory. A built-in thermal printer is available as an option.Our free DV Win software communicates with the RMO-A micro-ohmmeters via USB or RS232 interface. It allows you to run the test remotely from PC, as well as to download test results, analyze and generate fully configurable test reports.

  • Circuit Breaker Analyzers & Timers

    CAT Advanced Series - IBEKO Power AB

    DV Power circuit breaker analyzer and timer utilizes the latest technological enhancements for safe and fast testing of circuit breakers. The sophisticated design ensures efficient and reliable operations in high-voltage substations and industrial environments.The CAT Advanced series are stand-alone or PC-controlled digital instruments for a circuit breaker testing. The timing channels record closing and an opening of the arcing, resistor, and auxiliary contacts. Also, the main contact channels can measure the resistance value of the pre-insertion resistors (if present in the circuit breaker).With CAT Advanced series instruments, it is possible to record graphs of open and close coil currents. Furthermore, it records displacements of the HV and MV circuit breaker moving parts. Test results can be saved via USB, PC or be printed via 112 mm (4.4 inches) thermal printer (optional accessory) in tabular and graphical form.A circuit breaker test consists of different operational modes and CAT Advanced series supports:Open (O)Close (C)Reclose (O-0,3s-C)Trip free (CO)O-0,3s-COOpen-Close (O-C)Close-Open (C-O)Open-Close-Open (O-C-O)First trip (O)Multiple operations, such as Open-Close and Open-Close-Open, can be initiated by using a predefined delay time or by sensing a breaker’s contact position.The auxiliary inputs are used to monitor dry and wet auxiliary contacts. The six coil control analog channels measure and record coil currents simultaneously (OPEN and CLOSE), up to 35 A AC/DC.The additional six voltage analog channels have four selectable voltage ranges available (±1 V, ±5 V, ±60 V and ±300 V AC/DC).A built-in micro-ohmmeter generates up to 500A true DC ripple-free current with an automatically regulated test ramp that provides performing static and dynamic contact resistance measurement.Three transducer channels provide a measuring displacement of the circuit breaker moving parts, contact wipe, over-travel, rebound, damping time and average velocity. Also, a user can connect either an analog or a digital transducer to these universal channels.

  • Near Field Probes 30 MHz up to 3 GHz

    RF6 set - Langer EMV-Technik GmbH

    The RF6 near field probe set consists of 2 passive magnetic field probes and 2 passive E field probes for measurements in the development phase of the E-field and magnetic field in the range from 30 MHz to 3 GHz on electronic assemblies. The probe heads of the RF6 set allow a step by step localization of interference sources of the RF magnetic field and RF-E-field on an assembly. From a larger distance the electromagnetic interference is detected by RF-R 50-1 for the magnetic field and by RF-E 02 for the E-field. The RF-B 3-2 and RF-E 10 probes with their higher resolution can more presicely detect the interference sources of the magnetic field and the E-field. Field orientation and field distribution on an electronic assembly can be detected by special guidiance of the near field probe. The near field probes are small and handy. They have a sheath current attenuation and are electrically shielded. They can be connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. They do not have an internal terminating resistance.

  • Automatic Three Phase Transformer Ratio Meter

    ATRM PLUS - Eltel Industries

    *Fully Automatic measurement.*Wide selection of Excitation Voltages of 10V, 40V, 100V, 230V & 250V from front panel.*4V Excitation voltage provided for CT measurements*Ratio range of up to 5000; direct display of measured ratio.*No conversions required.*Automatic Jumper selecting as per the vector*Diagram of Transformer.*Automatic testing of all 3 phases in 3 phase transformers*Without manual intervention.*Displays % deviation from a nominal ratio.*External storage facility using pen drive.*Internal storage up to 10000 readings.*Touch screen 7” Color TFT display with backlighting with*Resolution of 800 X 480.*Tap changer facility.*Computer interface using RS-232 or USB.*Windows Interface software provided for data transfer.*USB printer interface.*Four terminal measurements to reduce errors due to*Winding and lead resistance.*Auto print and storage facility.Fast measurements.

  • Harness Design and Manufacture

    Teledyne Marine Impulse-PDM

    When designing an underwater cable harness, there are some factors which need to be considered, and we have produced the following list as a guide for customer information:Component considerations:- Electrical requirements- Mechanical considerations- Quality requirements- Reliability- Design redundancy (contact count)- Connector selection (type and form)- Locking requirements- Backpotting requirements- Waterblocking in moldings- Cable specification- Cable jacket material and compatibility with elastomers- Abrasion resistance- Stiffness profile at termination- Connector format (straight or right angle)- Molding format (straight or at an angle)- Clearance allowance for molding and cable routing- Elastomer compatibility (eg oil filled units)- Metalwork selection re: corrosion and cathodic delamination- Surface finish for metalwork as appropriateOperational considerations:- Operating depth profile (not just max. depth)- Tensile loads- Torsional loads- Bending loads- Bend control requirements (to limit bending at termination)- Deployment and recovery loads- Dynamic loading-Flow turbulence effects.

  • 11 Function Heavy Duty True RMS Industrial MultiMeter

    Extech EX530 - Extech Instruments Corporation

    Ruggedly designed and waterproof to IP67 standards, the EX530 is ideal for use in the outdoors, on boats, and in any harsh industrial environment. It has a double molded housing and is drop-proof up to six feet with a safety rating of CAT IV 600 Volt and CAT III 1000 Volt. It measures AC/DC voltage and current, resistance, capacitance, electronic and electrical frequency, temperature, 4 to 20 mA, and duty cycle. Additional features include: 0.06% basic accuracy, continuity beeper, diode test (2.8 Volt open circuit voltage), 40000 count resolutions, backlit LCD with barograph, peak hold, min/max, relative mode, data hold and 1000 Volt input protection for all functions. Comes complete with double-molded test leads, type K bead wire temperature probe (-4 to 482 degrees F/-20 to 250 degrees C), magnetic hanging strap, case, and a 9v battery.

  • Micro-Ohmmeters

    RMO-G Series - IBEKO Power AB

    The RMO-G is a portable micro-ohmmeter designed for contact resistance measurement of non-inductive test objects and applications with increased safety requirement. It tests medium and high-voltage circuit breakers, disconnecting switches, high-current bus bar joints, cable splices, and different high-current links. Due to its Both Sides Grounded and Remote Control functionalities, the instrument accurately measures even in the most demanding environments, providing additional safety to testing personnel.The RMO800G is the most powerful portable micro-ohmmeter on the market with 800 A output current. RMO200G is our best seller in the USA. A user can choose the appropriate model depending on the output current requirement, from 100 A (RMO100G) to 800 A (RMO800G).We use an unbreakable plastic case with IP67 protective rating (with closed lid) for instruments’ housing. Although very portable and lightweight, RMO-G micro-ohmmeters have very high output power capabilities. High output voltage enables a wider measurement range at higher test currents. Consequently, it enables the usage of thinner/longer test cables. RMO-G generates a true DC ripple-free (less than 1 % ripple) current with automatically regulated test ramps. During the testing, it increases current before measuring and decreases current after the measurement. This significantly decreases magnetic transients and ensures great accuracy.Special current clamps measure a current through groundings when the instrument tests in Both Sides Grounded conditions. The instrument itself powers these clamps. If even higher safety level is required, the Remote Control feature enables the operator to perform measurements from distant locations.RMO-G instruments can store up to 500 measurements in internal memory. Also, they have a built-in thermal printer and USB flash drive available as an option. An additional option is the built-in High Precision module suitable for measurement of very low resistance, in the range from 1 to 30 µΩ, with 0,01 µΩ resolution.Our free DV Win software communicates with the RMO-G micro-ohmmeters via USB or RS232 interface. It allows a user to run the test remotely from a PC. Also, a user can download test results, analyze and generate fully configurable test reports through the software.

  • Near Field Probes 30 MHz up to 6 GHz

    XF1 set - Langer EMV-Technik GmbH

    The XF1 set of near field probes consists of 4 passive near field probes and one passive E field probe for making measurements in the development phase of the magnetic and electric fields in ranges from 30 MHz to 6 GHz. Due to their integrated impendance matching, the probes are less sensitive in the lower frequency range than the RF type probes. The probe heads of the XF1 set allow for the step by step identification of interference sources of the magnetic field on an electronic assembly. At first, for example the XF-R 400-1 detects the fields which the assembly emits in total. Next, using higher resolution probes the interference sources can be more precisely detected. The E field probe is used for the detection of electric interfering fields near the assemblies. With trained use of the near field probes, field orientation and field distribution can be detected. The near field probes are small and handy. They have a sheath current attenuation and are electrically shielded. They can be connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. They have an internal terminating resistance.

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