Resistance Decade Box
set of precision resistors configured in desired resistance values.
See Also: Decade Box, Capacitance Decade Boxes, Inductance Decade Boxes
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Three-Phase Transformer Winding Resistance Meters
TWA Advanced Series
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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Transformer Winding Resistance Meters
TWA Standard Series
The TWA standard series instruments are designed to measure the resistance of six coils and simultaneously analyze the three-phase tap changer on load of the primary and secondary transformer coils (provided by model TWA40). This is done in a single cable configuration, with test currents up to 40A. Each transformer configuration has a special measurement algorithm that is optimized for rapid stabilization of test results. The TWA instruments generate a true DC current without ripple. Both current injection and magnetic circuit energy discharge are automatically regulated.
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Contacts Resistance Tester
JYK II
•Instrument IPC architecture for domestic production of all models of metal contacts SF6 switchgear, GIS combination of electrical, vacuum switch, oil switch and column switches, contacts and so on.•Sensor: Acceleration speed sensor, rotation speed sensor, linear stroke sensorinstallation is very easy and simple.•Trigger: The trigger, external trigger, the sensor is triggered. Sensor can trigger the circuit breaker manually switching characteristic test, such as a manual column pole division switch.
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Loudspeaker Box
Echo
The Echo Speech Source Type 4720 is a small active loudspeaker box providing calibrated acoustic signals for speech intelligibility measurements using the Dirac room acoustics software. The Echo Speech Source is typically placed at a human speaker position. The received signal at the listener position is then picked up by a microphone and analyzed in Dirac to arrive at an accurate qualification of the speech intelligibility through parameters such as the Speech Transmission Index (STI). The Echo Speech Source operates from 4 AA batteries or an external mains power supply, and can be mounted on a standard tripod.
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Oil Resistivity Test System / Million Meg Ohm Meter (MM1)
OTD-45
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Model : OTD-45OTD-45 is single self contained unit containing oil test cell, high frequency induction heating with temperature controller/sensor; dielectric loss measuring bridge, AC test voltage source, SF6 filled standard capacitor; high resistance meter; DC voltage source and all digital circuits.
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Masks Respiratory Resistance Tester
WKS-1200
WKS-1200 Masks Respiratory Resistance Tester applies to determining the inhalation resistance and exhalation resistance of respirators and mask protective products under specified conditions, and used for the relevant testing and inspection of ordinary mask products by the national labor protection equipment inspection agency or manufacturer.
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AC Load Bank (Resistive & Inductive)
K-1000 Resistive & Inductive
Kongter Test & Measurement Co., Limited
Kongter resistive & inductive AC load banks are used to simulate the motor loads or other electromagnetic devices working at their rated power factor. Many backup generators and turbines are rated at 0.7, 0.8 or 0.85 power factor and need to be commissioned at nameplate capacity using a combination of resistive and reactive load to fully qualify their operating capability. Using a resistive & reactive load bank enables comprehensive testing from a single unit.
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Insulation Resistance Tester For PV
MSEI-200C
MULTI MEASURING INSTRUMENTS Co., Ltd.
This model can measure insulation resistance of DC current circuit in PV systems (between PV module and power conditioner) on the live line and can distinguish the deteriorated part between Power Phase, Neutral Phase, P/N Phase and or PV modules.
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Resistance Standards
Ohm-Labs manufactures reference grade resistance standards from 10 micro-ohms to 10 teraohms. Each range of standards utilizes the latest advances in materials and processing for high stability and immunity from changes in ambient environment. All products are supplied with ISO17025 accredited calibration.
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Breakout Box
T1000-15
T1000-15 breakout box with dual 15 pin D-Sub connectors for signal capture or monitoring. Dual connectors provide a total of 30 test points plus a ground jack. All test points use standard size 4mm banana jacks. Test points may be connected using shorting banana cable to allow signal continuity. Ideal for continuity measurements, isolation testing, and signal capture.
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Digital Earth Resistance Tester
8PK-ST1520
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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OTDR Launch Cable Box
TM1000
Designed to aid in the testing of fiber optic cable when using an OTDR. The OTDR LaunchFiber box is used with Optical Time Domain Reflectometers (OTDR's) to help minimize the effects of the OTDR's launch pulse onmeasurement uncertainty.
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Ohm-Stat Resistivity Tester with LED Display
Range: 103 1012 ohms -100% accuracyMeasures resistance/resistivity, RTT, RTG and volume resistance with accessoriesAutomatic zeroing and power shut offCE approvedProduct conforms to the ESD S.20.20 spec standardsAutomatic voltage range selectorSmall, lightweight 2.6"x 5"x 1.2" (6.5 x 113 x 3cm), 8.4 oz. (233 g)LED display color indicates rangeLow battery warning lightLED display
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RF Shield Box
CMW-Z10
The R&S®CMW-Z10 has excellent shielding effectiveness and superior coupling characteristics.The shield box can be used for frequencies up to 6 GHz.The antenna structure is optimized to enable excellent radio connections between the DUT and tester.The highly broadband spiral antenna allows a wide variety of applications.These outstanding features combined with modular options make the RF shield box indispensable for any radiocommunications tester.
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3 Wire (Digital) Earth Resistance Tester
1120 ER
Standard Electric Works Co., Ltd
● Waterproof: IP54● Capable of measuring earth resistance and earth voltage● 2mA measuring current permits the testing of earth resistance without tripping earth leakage current breakers in the circuit under test● The test leads are supplied as standard accessories for simplified two-wire measuring system● 0Ω adjustment● Battery operated● Data hold function● Low battery indication
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OTDR Launch Cable Box, OTDR Dead Zone Eliminator, 1KM-2KM
Shanghai Fibretool Technology Co.,Ltd.
Designed to aid in the testing of fiber optic cable when using an OTDR. TheOTDR Launch Cable Box is used with Optical Time Domain Reflectometers (OTDRs) to help minimize the effects of the OTDRs launch pulse on measurement uncertainty. Available in many different configurations and fiber lengths.
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Resistance Welding
Resistance welding is a method in which the welding works are heated by resistance heat generated by sandwiching the welding workpieces with welding electrodes, passing current through them, and the metal is welded while pressurizing the works.A resistance welding machine composed of welding power supply, a weld head and an electrode. The welding power supply controls a welding current,the weld head exerts a pressure on the material to weld and the electrode provides welding current and pressurization force to the part under welding. We have been providing various kinds of welding power supplies and welding heads to meet these requirements.
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Single-Phase Transformer Winding Resistance Meters
RMO-TD Series
Using the most advanced switch-mode technology available today, the RMO-TD series is ideal for winding resistance measurements of inductive objects. Transformer resistance meters and tap changer analyzers are perfect for testing:transformer windings (power transformers, distribution, autotransformers),all types of tap changers,generators,electrical motors,high-current busbar joints,cable splices,and welding joints.In addition, transformer demagnetization can also be done with all RMO-TD instruments.The RMO-TD series contains 3 models, with maximal test currents from 25 A (RMO25TD) to 60 A (RMO60TD).The three independent voltage sense channels enable testing of three windings in series. This enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.All RMO-TD transformer resistance meters have a built-in tap changer control unit. It enables remote control of on-load tap changer (OLTC) directly from the device. In order to make the most out of this feature, DV-Win software is included which can be programmed to do everything automatically – running winding resistance tests and changing OLTC tap positions.The DV-Win software also enables control and observation of the test process, as well as saving and analyzing the results on a PC. It provides a test report, arranged in a selectable form as an Excel spreadsheet, PDF, Word, or ASCII format. Additionally, DV-Win measures and calculates the OLTC transition time, the ripple and the winding resistance for each tap changing operation. The software can also perform the calculations necessary for the “Heat Run” test.All results can be exported in the report format.
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4-Wire Resistance Measurement | Continuity & HiPot Cable & Wire Harness Testers
An add-on option for the CableEye HVX high voltage cable tester series that permits expanded testing for contact and wire resistance as low as 1 mΩ. After checking for opens, shorts, miswires, and resistance limits, the 4-wire Kelvin measurement applies a user-selectable test current from 10 mA to 1 A to determine connection resistance within 1 mΩ. The resistance profile of a model cable may be stored and used as a basis of comparison during later testing to reveal cold solder joints, faulty crimps, recessed pins, pin contact contamination, improper wire gauge, and stress-extruded wire.This option may be purchased with any new HVX tester, or added as an upgrade to any of your existing HVX testers.
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Ground Resistivity and EarthService Tester
AD-510
Large, readable LCD display (2000 counts), Instant battery life indicator, Test frequency: 128 Hz (quartz generator), Test Voltage: max 30 V peak-to-peak, Range: 0,01 W ? 2 k W. Accuracy resistance measurement: 1 % 2 digits,
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Winding Resistance Meter 15Amps, 2 Channels Rack
WR14R
Raytech Digital Winding Resistance meter WR14 R is the rack mount version of the WR14. They are designed for high degree of accuracy for the measurement of very low resistance of any inductive loads.
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Insulation Resistance Tester For PV (Judge Deterioration Point)
MIS-PVS
MULTI MEASURING INSTRUMENTS Co., Ltd.
The model MIS-PVS is an insulation resistance tester for the exclusive use in photovoltaic systems. The ordinary insulation resistance testers cannot make measurement properly during generation of PV systems. This instrument, however, can measure the insulation resistance simply by touching probe to the live line whether making generation or not. There are two ranges of PVH and PVL. PVH is for high voltage generation system (more than 500V and less than 1000V) and PVL is for the system less than 500V.
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Resistance Meters
ACL provides surface resistance/resistivity meters and digital megohmmeters to quickly and accurately measure resistivity.
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Skid (Portable Skid Resistance Tester)
(also known as the British Pendulum Tester) is an essential tool for anyone with a duty to minimize the risk of accidents arising as a result of slippery roads and floor surfaces. This device is also used to investigate the cause of accidents after they have taken place.
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2D Geophysical Inversion Software for Resistivity and Induced Polarization Data
RES2DINV
RES2DINV software is designed to interpolate and interpret field data of electrical geophysical prospecting (2D sounding) of electrical resistivity (conductivity) and induced polarization. The inversion of the resistivity and IP data is conducted by least-square method involving finite-element and finite-difference methods. The software can handle data from any electrode array, including Wenner (a, b, g), dipole-dipole, inline pole-dipole, pole-pole, Wenner-Schlumberger, equatorial pole-dipole and non-conventional arrays. Interpolate data from land, under water, and cross-borehole surveys. Easy data conversion from the most popular geophysical instruments including ABEM Lund, Syskal, AGI, PASI, IRIS, SCITREX, etc.
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Field-installation Type Electric Resistivity Meter (Two-Wire Transmission)
HE-300R
HE-300R connects resistivity sensor (ERF Series) and measures resistivity and temperature in the sample water.It is suitable for measurement of UPW resistivity.
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Anti-Surge Chip Resistors (Double-Sided Resistive)
Panasonic Industrial Devices Sales Company of America
An AEC-Q200 Compliant SeriesPanasonic components specified as AEC-Q200 Compliant are consistently designed into automotive systems. However, today’s Design Engineers are specifying AEC-Q200 components to meet the high-quality standards of devices beyond automotive applications.
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Handheld Digital Multimeter, 4.5 Digit, Water and Dust Resistant
U1272A
Feature sets that meet traditional industrial requirements and improve productivity and safety Improved accuracy and resolution to meet traditional industrial requirements (30,000 counts resolution with 0.6% for ACV accuracy)Intelligent features to improve productivity and safety (LPF, ZLOW, Smart )Better grip Both visual and audible continuity indication in noisy environments Easy access to fuse for simplified maintenance Easy connectivity to PC and internal memory (up to 10,000) for data logging Large rotary switch and buttons that are easy to operate Dust and water resistant casing (IP 54 compliant)Compatible with U1177A/U1117A IR-Bluetooth adapter for remote monitoring & datalogging Altitude: 3000 meters
