Ground Resistance
Evaluation of the conductance of earth grounding.
See Also: Ground Resistance Clamps, Ground Resistance Testers, Surface Resistivity
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Three-Phase Transformer Winding Resistance Meters
TWA Standard Series
When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilization criteria. This option makes the operator’s job significantly easier.Both models can output test currents from 5 mA to 25 A DC for the purpose of winding resistance measurement. TWA40D has a special test mode for checking the synchronization of on-load tap changers with three phases simultaneously tested in parallel, in which the total test current can rise to up to 40 A DC.TWA40D has additional advantages when it comes to non-intrusive tap changer analysis. The unique DVtest method 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, simultaneously with the measurement of tap changer motor current which helps with the detection of 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 on three phases simultaneously. It can also be performed as an additional test simultaneously with the winding resistance test in all tap positions.An additional unique advantage of TWA40D 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 shorten the total testing time – for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.The test leads for TWA three-phase transformer winding ohmmeters are interchangeable with the TRT turns ratio testers, which means that both sets of tests can be performed with a single test lead connection to the power transformer terminals.
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Insulation Resistance Tester
UDH-50-1-T
UDEYRAJ ELECTRICALS PRIVATE LIMITED
utomatic-microcontroller operated• Standard test voltages-0.5kV, 1kV, 2.5kV, 5kV • Resistance range to 1TΩ • Continuous digital display on LCM• Test modes: Insulation resistance,PI (Polarization Index)AR (Dielectric Absorption Ratio)(PI and AR automatically calculated)
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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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High Resistance Meters
Measurements International Ltd.
Direct or Substitution Measurements, Automatic and Manual Operation, No Temperature Coefficient, Multiple Modes of Operation.
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Guardian Ground Bond Tester
19572
Chroma Systems Solutions, Inc.
Wide resistance measurement range : 0.1 ~ 510 mΩHigh performance AC current output : 45 ACompact size ground bond testerProvide reliable and stable test resultsBuilt-in resistance compensation functionStandard RS-232 interfaceOptional GPIB InterfaceCompatible with the model 19070 series Hipot Tester2-Year factory warranty
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Earth Resistance Testers
Shanghai Beha Electronics Co., Ltd.
A handy test and measurement instrument for testing Earth resistance and Soil resistivity.
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Electronic Resistance Stores
Is designed to reproduce the values of resistance to direct current through channels independent and galvanically isolated from each other and from the case.
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Transformer Winding Resistance Meters
TWA Advanced Series
The TWA advanced series instruments are designed for six-winding resistance measurement and simultaneous three phase on-load tap changer analysis of both the primary and the secondary transformer windings. This is performed with a one singlestep cable setup, with test currents of up to 40A. Each transformer configuration has a special measurement algorithm which is optimized for the fast stabilization of test results. The TWA instruments generate a true DC ripple-free current. Both the injection of the current and the discharge of energy from the magnetic circuit are automatically regulated.
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Earth Resistance Clamp Meter
T2100
Clamp meters for measuring earth resistance directly on earth rods (STAKELESS METHOD) and compatible with MacrotestG series meters
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TRANSFORMER WINDING RESISTANCE METER
International Biological Laboratories
This Test set is suitable to measure winding resistance of transformers, single or 3-phase, star or delta connected upto several MVA.Two independent displays read the resistance of both primary & secondary windings simultaneously. However, primary or secondary winding can also be measured separately.
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Resistance Meter
RM3542A
High-speed resistance meter ideal for automated lines; compatible with super-small electronic components • Testing source: DC • Fastest measurement time: 0.9 ms • Minimum integration time: 0.1 ms • Finest resolution: 0.1 μΩ
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Dry Arc Resistance Tester
Dry Arc Resistance Tester is designed to conduct high voltage,low current Arc Resistance test on solid electrical insulation material as per:ASTM standard D495-99 (2004) and UL 746A. Why Arc Resistance Test? Many Cases of insulator failure are due to deterioration of its surface because of sustained electrical discharge or Arc. This test method is intended to test the resistance of insulating material when a high -Voltage low -current Arc close to the surface of insulation, intending to form a conducting path therein or in causing the material to become conducting due to decomposition and erosion.AdvantagesThis Test ensures that your products meet high standards of quality & safety. This product is meant for all Switchgears/ insulator/ Polymer/ electro plastic manufacturers and manufacturers who use insulators in their products e.g. Wiring Accessories, Appliances, HT/LT line insulators etc.
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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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Sheet Resistance, leakage, and CV-IV measurements
Electrical Char
Full line of front end electrical characterization tools: Sheet Resistance, leakage, and CV-IV measurements.
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IEC60529 IPX1/2 Rain Resistance Tester
IPX12A-600
Shenzhen Chuangxin Instruments Co., Ltd.
The IEC60529 IPX1/2 Rain Resistance Tester is designed according to the <> of IEC60529 standard, GB7000.1 and GB4208-2008. IEC60529 IPX1/2 Rain Resistance Tester is mainly used to simulate the product under the condition of the rain climate to test the products’ physical properties.
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Resistance Thermometry Bridges
By using built-in or external standard resistors, resistance thermometry bridges measure resistance ratios with high accuracy, which are indicative of the temperature, among other things. These instruments are not only used in the field of temperature measurement, but − due to their high accuracy − also in electrical laboratories.
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Terminal High Resistance
Terminal High Resistance Standards that can be rack or bench mounted. The 6636 Series provides a set of customer chosen precision resistance standards enclosed in a temperature controlled chamber.
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Insulation Resistance Measurement
MD 10KVR
The digital insulation tester model MD-10KVR is Megabras' cutting edge insulation analyzer equipment and it is one of the most complete and sophisticated available in the international market. A powerful software allows for further analysis of tests results, including features such as graphical representation and automatic report generation. Its proven technology provides safe, reliable and accurate measurements of insulation resistances up to 10 TΩ, with 4 pre-selected test voltages, 500 V - 5 kV - 10 kV - 15 kV. Other test voltages may be selected in steps of 25 V, 100 V or 500 V.
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DC Resistance Tester
DCSS502BC
Resistance meter is designed to measure copper resistance of transformers, wires, cables, other conductors and other coil products etc. It is widely used of low resistance measurement of switches, heater wires, transformers, relays, motors, electric films and PC circuit boards, wires, cables, etc. With reliable Good/ NG judgement, it is a premier resistance meter for the use in production line or QC department.
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Resistivity Meters
Precisely Measure Surface Resistivity, Volume Resistivity, or Resistance to Ground. Advanced Energy's Trek and Monroe resistivity meters offer accurate and repeatable measurements for surface resistivity, volume resistivity, or resistance to the ground.
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Contact Resistance Meter
CRM 200B
CRM 200B directly measures micro-ohm values at 100 Amps DC under live switchyard conditions.CRM 200B is specially designed to reliably measure contact resistance of circuit breakers, isolators, busbar joints, welded joints etc., under the hostile electrostatic noise found in live EHV switchyards upto 765 kV.
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Plant Auditor's Surface Resistance Kit
PMK-153
The PMK-153 Resistance Test Kit contains the instruments you need to take resistance measurements.The PMK-153 includes the PAS-853B Wide Range Ohmmeter with 5 pound Conductive Rubber Electrodes. The PAS-853B instrument is a wide range ohmmeter that measures accurately from 0.01 to 9.9x1012 ohms. In AUTO mode the instrument automatically adjusts resistance range and selects test voltage in accordance with standard practices outlined in ANSI/ESD STM11.11, and meets audit requirements of ESD TR53.
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Resistive Touch Controllers
Analog Devices offers a range of controller ICs for use with 4-wire resistive touch screens. These controllers can be used in human machine interface applications in consumer, automotive, and other products. Analog Devices’ controllers have 12 bits of resolution, SPI/I2C interface options, and low power consumption, making them ideal for use in handheld devices.
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Time Domain Induced Polarization /Resistivity Receiver
IPR-12
This allows you to troubleshoot and monitor data quality for the most efficient IP survey possible. With an IPR-12 you will have an excellent tool to get the best possible IP data from your survey.
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Low Resistance Test System
9100-2
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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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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Transformer Winding Resistance Meters
Vanguard Instruments Company, Inc.
The TRM-40 is Vanguard Instruments’ third generation transformer winding resistance meter. The TRM-40 is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or any dc resistance of an inductive device.
