Resistance
that which keeps current from flowing freely.
See Also: Resistivity, Resistance Standards, Resistance Meters, Resistance Test, 4-wire
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Product
Earth Contact Resistance Tester
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SCR ELEKTRONIKS have developed an equipment namely Earth Contact Resistance Tester to test the appliance. To ensure the safety of operator it is essential that the Earth path (connection) should offer minimum impedance to by pass short circuit Current to Earth. This is ensured by measuring Resistance of the Earth path by passing heavy Current say 25 A. The Earth Contact Resistance Tester essentially comprises of a Variable Current source with digital Ammeter to measure the Current supplied. The Voltage drop across the Earth path is measured with a digital Voltmeter. Optionally for a particular Current (25 A) the meter can be calibrated in terms of Resistance. A timer is provided to switch off the Current after the Set Time.
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Product
Fully Automatic Transformer Winding Resistance Tester
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Measure DC resistance of transformers windings etc. Introduction: The NMC ''TDR'' is a high precision, new generation, light weight large output current and micro-processor controlled tester. This replaces old DC wheat stone bridge and double arm bridge for measurement of DC resistance. ''TDR'' adopts new advanced test current power supply technology, four terminal measurement, digital display of resistance value and test current. ''TDR'' is powered by 220V AC mains single phase supply. The measurements are accurate as the test current is highly stable. High automation is achieved with automatic discharge warning.Principle: The constant current generated is fed to the resistance under test through the current terminals and the voltage drop across the resistance under test is measured and displayed in ohms. A true four terminal measurement is used to eliminate the need for lead resistance compensation.
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Product
TRANSFORMER WINDING RESISTANCE METER
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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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Product
High Resistance Neutral Grounding Devices
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HRG systems limit the fault current by placing high resistance between neutral point of transformer (or generator) and ground. As it is not possible to locate the fault point in delta connected systems, an artificial neutral point is created and delta connected system can be grounded. This allows a fault current of a few amperes thus locating the fault point gets easy. When the neutral point is grounded thru high resistance, both continuity of operation is provided during fault condition and sufficient current (typically between 2 A and 10 A) flow is provided for ease of locating the fault point.
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Product
Contact Resistance Meter
CRM 100B+
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SCOPE introduces its next generation of hugely popular CRM series contact resistance meter, CRM100B+ in all new super light avatar, based on cutting edge ultra capacitor technology. CRM incorporates some state of the art hardware & smart software features making it a must have tool for testing & maintenance engineers.
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Product
Earth Resistance Meter
EM 4058
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earth tester is a digital, microprocessor controlled instrument that allows to measure the earth resistance and ground resistivity (using Wenner´s method), as well as to detect parasitic voltages present in the ground. This instrument is suitable to measure earth systems in power substations, industries, distribution networks, etc., according to IEC 61557-5.
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Product
Non-contact Sheet Resistance /resistivity Measurement Instrument
EC-80
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*Easy operation and compact design*Auto-measurement start by inserting a wafer under the probe*Easy set up to measurement condition by JOG dial*5 types of model for each measuring range
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Product
Insulation Resistance Tester
UDH-50-1-T
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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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Product
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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Product
Single-Phase Transformer Winding Resistance Meters
RMO-TW Series
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RMO-TW series is perfect for winding resistance measurements of inductive objects. It is ideal for testing transformer windings (power transformers, distribution, autotransformers) and for on-load tap changer verification. In addition, any RMO-TW transformer ohmmeter & tap changer analyzer can also perform transformer demagnetization.The series contains 4 models, with maximal test currents from 10 A (RMO10TW) to 50 A (RMO50TW). They are fitted in a portable and lightweight metal housing.All transformer ohmmeters from RMO-TW series generate a true DC ripple-free current with automatically regulated measurement and discharging circuit. The injection of current and discharge of energy from the test object are automatically regulated.Three independent channels enable testing of three windings in series. Consequently, this enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.DV-Win software 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. Finally, a user can export all results in the form of a report.
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Product
Welding Resistance Tester
WRT
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The Welding Resistance Tester is used in battery assembly lines to detect defective intercell connections. It is equipped with a 5-channel test head for car and truck batteries. It features 1-20 O DC resistance ranges and a multi-line LC display for OCV, CCV, and DCR measurements for 5 intercell connections.
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Product
Circuit Breaker Contact Resistance Meters
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Vanguard Instruments Company, Inc.
The Vanguard Auto-Ohm 10 is a 10-ampere battery powered micro-ohmmeter designed for low-resistance-measuring applications such as the measurement of resistance in circuit breaker contacts, bushing contact joints, and welding joints. The unit is powered by four 3400mAh, 3.7Vdc Li-Ion rechargeable batteries. With these high capacity batteries, up to 2,900 tests per charge (10A/2 second duration) can be performed in the field.
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Product
Surface Resistance Meter
990SRM
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The Model 990SRM is a convenient, pocket-sized meter for measurement of surface resistivity and resistance to ground.
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Product
Resistance Measurement
PROMET
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High-precision micro-ohm measuring systems with adjustable DC test current for determining resistances on circuit breakers or inductive loads such as transformers, for example. The high-precision ohm meters of the PROMET series are used to determine very low electrical resistances in the µΩ range. The adjustable test current of up to 600 A in combination with a four-wire measuring method delivers measurement results which meet stringent accuracy requirements. State-of-the-art power electronics coupled with a robust design guarantee excellent reliability for use as a portable device in switching stations and industrial environments. Typical applications include determining the contact resistance of switchgear devices and determining the resistance on inductive loads such as transformers.
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Product
Digital Insulation Resistance Tester (CE)
MIS-D
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MULTI MEASURING INSTRUMENTS Co., Ltd.
*The big digital and bar graph LCD display with back light enabled easy observation. Especially useful when working in dark place.*Hand free and continuous measurements with custom made switch.*Safe design with built in automatic discharging function for any capacitors present in the circuit.*The voltage in the circuit or capacitor can be checked by warning lamp for safe insulation measurements.*Data hold and auto power off function.*Compact, light weight and heavy duty rugged case.
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Product
4 Channel Precision Resistance Simulator Card
DP-cPCI-2709
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DP-cPCI-2709 RTD Simulator is ideal for applications of Resistance Temperature Detector(RTD) simulation requiring high resolution and low value resistances . DP-cPCI-2709 is offered in two factory selectable configurations of 4 channels and 2 channels depending on the resistance range needed. The 4 channel configuration offers resistance ranging from 30Wto 75Win steps of 50 mWresolution. This is ideal for applications where low Ohmic simulation is required. Similarly, the 2 resolution.
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Product
Winding Resistance Meter
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* Selectable four resistance ranges.* 4 1/2 digits LED display* High measurement Current (10A)* True four Technique elimanates lead resistance errors Systems* Fully protected against overloads* Proven design* Computer connectivity through RS 232
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Product
Low Resistance Ohm Meters
DMO-100D
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For fast and accurate measurements of low resistanceon Switch Contacts, SF-6 Switch Gear, Bushbars, Splices, Joints, Fuses, Breaker Contacts, and Rail Bonds. • 100A DC continuous current in 4 ranges of 10A, 20A, 50A and 100A
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Product
Insulation Resistance Measurement
MD 5KVr
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The digital insulation tester model MD5KVR is TENTECH's cutting edge insulation analyzer equipment and it is one of the most complete and sophisticated available in the international market. A 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 5 TΩ, with 4 preselected test voltages, 500 V -1 kV - 2,5 kV - 5 kV. Other test voltages, from 50 V to 5 kV, can be selected in 25 V or 500 V steps.
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Product
Resistance Transmitter
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Knick Elektronische Messgeräte GmbH & Co. KG.
Transmitters for resistors and potentiometers in 6 mm housing with calibrated range selection. Functional safety up to SIL 2, SIL 3 redundant to parameterization via interface or intuitively, directly on the device. Universal use with 24 V DC or AC power supply.
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Product
PE-, Insulation Resistance, HV- and Function Tester
GLP1-g
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GLP1-g testers are ideally suited for use in production, laboratory, test field, quality management, automation and many more applications. Thanks to the individual combination of functions you are able to reach your aims quickly, reliably and cost-effectively.
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Product
20J3 SHEET RESISTANCE METER
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Non-contact measurement of Ohms/sq, Ohms-cm, resistivity, thickness, and moreMeasures nearly all thin conductive materials or coatingsChoose a sensor in one of four ranges, from .005 Ohms/sq to 100,000 Ohms/sqadd other sensors laterFor benchtop or inline applicationsSimple one-button operationSmall footprint with detached sensor probeOptions include vacuum-ready probe, PC-based productivity software, Ethernet connectivity, stage, and more
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Resistance, Ground Testing, Battery And Power Quality
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Our testing equipment works wherever you are, whenever you need it, with precision and reliability.
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Product
3 Wire (Analogue) Earth Resistance Tester
1805 ER
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Standard Electric Works Co., Ltd
● High quality Taut Band movement.● 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.● Test test leads are supplied as standard accessories for simplified two-wire measuring system.● Battery operated.● Battery check function.● Calibration performed with supplied test leads.
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Product
Precision Resistance Meter
IC4
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Precision digital resistance meter IS4 is intended for use in an upgraded version of the TEST-9110 installation quality control system and testing on-board cable networks. The IC4 module can also be successfully used in other control and measurement systems based on the open international VXI standard.
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Product
Zero Resistance Ammeters
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Current sinks are electronic circuits which can sink electric power in a controlled manner, thus acting as controlled loads. Our current sinks are designed as four - quadrant current sinks which can feed and sink currents in both polarities (also disregarding the polarity of the resulting voltage).
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Product
Electronic Resistance Store
MEMS2-4L
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The mezzanine serves as an electronic store of resistance to direct current, the value of which is set by software, through two isolated channels.
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Product
Earth Resistance Tester
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PeakTech Prüf- und Messtechnik GmbH
A Rugged sealed digital earth tester is built with all the protection you need for outdoor use. The instrument is suitable for the testing of single earth electrodes such as lightning conductors and other small earthing systems according to VDE 0413. The resistance of conductors such as continuity and conduit coupling joints can also be measured. Two-terminal operation measurement, which reduces the accuracy, can also be done by shorting P and C terminals. It has an advanced circuit design that permits the instrument to operate with the minimum influence from earth voltage and earth resistance of the auxiliary spikes.
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Product
ITO Sheet Resistance Standards (ITOSRS)
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Indium Tin Oxide Sheet Resistance Standards (ITOSRS) from VLSI Standards are NIST-traceable products, intended for calibration of both contact and non-contact sheet resistance measurement tools used in the LCD, flat panel and touch-screen markets.
