Zero Resistance Ammeters
measure galvanic current and resistance. Also known as: ZRA
See Also: Ammeters, Nanoammeters, Picoammeters
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Contact Resistance Measurement System
CRMS
The CRMS is a system designed to allow any user to measure the resistance of each set of relay contacts associated with the relay under test. The test system consists of a CONTACT RESISTANCE MEASUREMENT UNIT (CRMU), a MULTIPLE RELAY TEST RACK, as well as an interconnect CABLE ASSEMBLY. Either DC or AC energy to pick and drop relay coils under test for all contact measurements is supplied from the CRMU and easily interfaces with the Multiple Relay Test Rack. For additional and more thorough testing of relays an external relay tester can be interfaced to the Multiple Relay Test Rack to supply energy to the relay coil. It is recommended that the UTE Relay Tester With Timer/Counter (UTE Product # 15967-00) be utilized so the operator can take full advantage of the unique features it offers
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Resistance Substitution Box
RS Series
The RS Series Resistance Substitution Box is the most commonly used decade box on the market today. The RS Series is not only easier to use, but it is also priced lower than most its competition.
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Insulation Resistance Tester For PV (4 Range)
MIS-PV2
MULTI MEASURING INSTRUMENTS Co., Ltd.
The model MIS-PV2 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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Fully Automatic Transformer Winding Resistance Tester
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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10KV Insulation Resistance Testers
DIT-915
• A timer which shows the elapsed time when the test was "ON" and also shows the total time of the test• Displays a voltage warning and sound when AC or DC is present before injecting the test voltage.• A buzz will intermittently sound when high voltage is generated and continues until the circuit is fully discharged• Four voltages (1KV, 2.5KV, 5KV and 10KV)• Auto-ranging and menu-driven.• A bar-graph which displays the voltage decay during the discharge of the tested circuit and the voltage stressing the insulation while the test is in progress
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Winding Resistance Meter
TRM 25
SCOPE introduces 25 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 25 is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistance measurement of three / six windings, measurement of resistances of all taps with automated tap change and demagnetization facility. The meter is protected against the back-EMF offered by large inductive windings.
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Insulation Resistance Tester
1507
The Fluke 1507 is a versatile, compact, handheld insulation tester for advanced industrial and electrical insulation testing. Its multiple test voltages make it the ideal tool for many troubleshooting, commissioning, and preventative maintenance applications.
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Megohmmeters/Insulation Resistance Testers
Full line of megohmmeters with test voltages 50V to 5000V. Capability to measure insulation resistance up to 10T. These rugged, weather resistant meters are accurate, reliable and built to perform. Battery, AC Powered & Hand-cranked models available.
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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
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3 Wire (Analogue) Earth Resistance Tester
1105 ER
Standard Electric Works Co., Ltd
● 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.● In addition to facilitating for precision measurement, test leads for simplified two-wire measuring system also are supplied as standard accessories.● Battery operated.● Battery life indicator. ● Calibration performed with supplied test leads.
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Battery Internal Resistance Tester
HDGC-3915
HD Power Test Equipment Co.ltd
Battery Internal Resistance Tester is designed using the advanced AC discharge measurement method to test accurately voltage and resistance of battery. It is strictly designed to evaluate battery performance, state and life-time, which maintain all stationary power systems including Uninterruptible Power System. Battery Internal Resistance Tester can proceed the measurement in a group and in a single section of battery. With accurate testing of resistance and voltage, it gives an indication of battery capacity and technical status. The measurement data can be read on the instrument display directly. And it can also be uploaded to PC simply by using the USB drive. With the analyzing software, you could not only keep a record of the testing result but also have detailed analyzing for the status of batteries in different testing conditions.
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Digital Surface Resistance Meter
NEW Enclosure with Rubber Grip EdgesThinner and narrower design is easier to hold and provides protection from drops.NEW Quick Check ButtonBypasses the 15 second electrification period to allow quick spot checks.NEW Battery Compartment
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Weather Resistant Surge Protector for RS485 Control & 12VDC Power Lines
SP-RS485-12V-O
Ideal for applications such as video surveillance cameras and access control. Protects sensors running on 22 AWG 2-wire sensor cables or 12VDC power lines against the effects of electrostatic discharge, faulty wiring and lightning. RS485 protection: Stage 1 clamping voltage: ±90V; Stage 2 resistance: 3.3 Ohms; Stage 3 clamping voltage: ±7.5V. 12VDC power lines protection: Stage 1 clamping voltage: ±90V; Stage 2 current rating: 3A; Stage 3: 12V TVS (transient voltage suppression) diode. Screw terminal pairs for RS485 and 12VDC power lines protection. Will also protect two single ended data, analog or control lines. Impact and weather resistant enclosure with locking hinged cover.
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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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Insulation Resistance Meter
AMIC-15k1
The partial discharge indicator PDI. Diagnosis of insulation systems based on standard measurements of IR, DAR, PI, SV, RT, DD. Allows to test the electrical durability of the tested object - indication of breaking voltage. The high resistance to electromagnetic interference ensures uninterrupted operation in power plants and near high-voltage transmission lines up to 1200 kV AC and 500 kV DC.
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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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Handheld Turns Ratio & Winding Resistance Tester
TWR-H Series
Handheld TWR-H device is DV Power single-phase instrument designed for measuring transformer winding resistance and turns ratio.The instrument has two output DC sources for measuring transformer winding resistance. The first DC source can output up to 2 A DC and is used for injecting current to the transformer’s high voltage winding. The second DC source can output up to 10 A DC and is used for testing the transformer’s low voltage winding. This is especially useful when measuring winding resistance of distribution transformers. These transformers have large turns ratio and therefore a big difference between resistances of high voltage and low voltage windings. Upon the winding resistance test, it is also possible to demagnetize the transformer core. The demagnetization process is completely automatic and safe.Together with the turns ratio, the instrument also measures excitation current and phase shift. This enables detecting transformer core or winding turns failures which cannot be spotted by measuring turns ratio only. The instrument can output test voltage up to 40 V AC for this test, but it can also output a very low test voltage of 1 V AC which is necessary for turns ratio verification of the majority of current transformers.TWR-H is powered by an internal Li-Ion battery. Up to 100 tests can be performed with a fully charged battery.
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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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Multi-Test Resistivity Measurement System
Sheet resistance mapping of thin films with a collinear 4-point probe, Temperature co-efficient of resistance (TCR) of thin films with collinear 4-point probe, Precision temperature co-efficient of resistance (TCR) with 2-point Kelvin probes and precision surface temperature probe, resistor testing with 2-point Kelvin probes,Precision resistor testing with a Kelvin probe card, temperature co-efficient of resistance resistor test (TCR), and Standard TCR test of multiple resistors with Kelvin probes or a probe card.
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Radiation Resistant Resolver
Computer Conversions Corporation
Computer Conversions GT Transducers are brushless, Electromagnetic, Rotary Sensors used to provide Precise Absolute or Incremental Position, and Velocity feedback in harsh environments. All Computer Conversions Transducers are continuous rotation, bidirectional, and electronically passive devices (no electronic components to degrade or fail), that require zero maintenance, and may be installed in virtually inaccessible locations.
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Circuit Breaker Contact Resistance Meters
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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Resistive & Capacitive, Inductive AC Load Bank
RLC
Inductive & capacitive load banks are reactive only and must be used in combination with a resistive load bank to provide the desired load profile to test a power system. Reactive loads banks can provide either a leading power factor (Capacitive) or lagging power factor (Inductive).
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Insulation Resistance Meter
Changzhou Applent Instruments Inc.
Designed for measuring very high resistance and related parameters of insulation materials, electronic components, and electro-mechanical components.
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Surface Resistance Meter Kit - Test Anti-Static, Static Dissipative and Conductive Surfaces
PRS-812RM
- Surface Resistance Tester from 0.10 Ω to 1 Teraohm- Constant Voltages 10 volts and 100 volts- Automatic Electrification Period- Determines if a surface is Dissipative, Conductive, or Insulative- Measures resistance point-to-point(Rtt) and resistance to ground (Rtg)- Measures resistance of ESD Flooring, ESD Worksurfaces and Packaging- Conforms to all ESD Association Standards for Resistive Characterization- Includes 2 each Surface Resistance Probes- Packaged in a hard shell Carrying Case- Certificate of Calibration Traceable to NIST included- 2-year Limited Warranty on Main Instrument
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Zero Gauss Chamber
IDR-800
Integrity Design and Reseach Corp.
Two cylindrical tubes are equal in length (12"), one is inside the other, both of them are closed at one end. At the other end, the inner tube is open (Radius=1").The cylindrical tubes are made from high permeability material.The magnetic field inside the inner tube is almost annulled.Optional use with the Geomagnetometer IDR-321 to provide a zero gauss (magnetic field-free environment) reference, enabling you to take absolute readings of the ambient magnetic field (the Earth's magnetic field is typically around 500 mG)
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Field-installation Type Electric Resistivity Meter (Four-Wire Transmission)
HE-200R
HE-200R 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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Resistance Measurement
PROMET 100 / 200 / 600 high-accuracy, precision ohm meters deliver an adjustable test current up to 600 A which is independent of the supply voltage. They utilize the four-wire resistance measurement method, enabling them to meet extremely stringent accuracy requirements when determining resistance values in the micro-ohm range.State-of-the-art power electronics coupled with a robust design guarantee maximum reliability, even when used as portable devices in switching stations or industrial environments.The modern operating concept, an interface to the test systems of the ACTAS product line and an optional remote control unit make these micro-ohm meters flexible and versatile.
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Surface Resistance Meter
Wolfgang Warmbier GmbH & Co. KG
Starterkit for testing conductive an dissipative surfaces and electrostatic fields/surface potentials
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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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Medical Grounding Resistance Tester
2678YM
Shenzhen Chuangxin Instruments Co., Ltd.
Medical Grounding Resistance Tester，Product Introduction2678YM Medical Grounding Resistance Tester Is Used To Measure The Internal Electrical Equipment Of Grounding Resistance,Which Reflects The (Contact) Resistance Of Total Grounding Terminal Of Electrical Equipment.It Suitable For Measuring All Kinds Of Motors,Electrical Appliances,Instruments,Household Appliances And Other Equipment Resistan
