Ground Resistance Testers
See Also: Ground Resistance, Earth Resistance Testers, Ground Resistance Clamps
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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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Air Core Neutral Grounding Reactors
Neutral Earthing (Grounding) Reactors, which resist current flow through inductive elements, are single phase reactors generally connected between ground and neutral of transformers or generators in order to control single line-to-ground faults at a desired level.
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Hand Cranked Analog Insulation Resistance Tester
IRT20
UEi Test & Measurement Instruments
The IRT20 is a Hand-cranked Insulation Resistance Tester. With a insulation resistance range of 0.1 to 1000MΩ, 250, 500 and 1000V output ranges and accurate to with in one division. It is in a sealed, water resistant, rugged metal housing and is backed by a 1-Year limited warranty.
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Earth and Resistivity Testers
Earth tester offering selective earth, soil resistivity, earth coupling and continuity measurements
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Earth resistivity meter
16GL-N
Last release of a very popular family of earth resistivity meters, this 16 bits geoelectrical instrument represents a really performing and affordable solution for Vertical Electrical Soundings at medium and great depth. Reliable and lightweight, 16GL-N is characterized by really first-rate performances, even if it remains extremely easy to use. The possibility to download data through USB enables a quick interpretation with the data inversion software. It is recommended, as to exploit its capabilities, to use it in conjunction with one or more P-100-N rechargeable accumulators.
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Static Grounding for Process Plant & Equipment
Earth-Rite OMEGA II
The Earth-Rite OMEGA II monitors the resistance of the static grounding circuit for processes where a risk of static charge accumulation on the equipment could result in an incendive electrostatic spark within locations that have potentially flammable atmospheres present.
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Transformer Winding Resistance Meters
RMO TW Series
The RMO-TW instrument can perform a simple, fast and reliable verification of a transformer on-load tap changer. This instrument allows measurements of a winding resistance at each tapping position of an on-load tap changer without discharging between tests. Problems with OLTC switching, such as interruption, can be detected with these measurements. The results are displayed on a backlit LCD screen.
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Ground Bond Tester
260 Series
Our 260 Series makes Ground Bond testing simple. We offer two models so that you can have a simple and easy-to-use Ground Bond tester that provides the output current you need to satisfy NRTL specifications. With an intuitive interface that allows you to set-up a test in seconds and practical security settings, our 260 Series can easily be deployed in both laboratory and production line environments.
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Insulation Resistance Meter
SME1202
Scientific Mes-Technik Private Ltd
General purpose insulation resistance meter Analog indicator, High measurement speed Test voltage range: 10 V to 1000 V Suitable for Testing capacitor insulation test Easy operation
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2-Channel Resistivity Meter
HE-960RW-GC(W)
The HE-960RW-GC(W) is a 2-channel simultaneous-measurement carbon sensor, resistivity meter that can be connected with two sensors. The measurement range is: 0 - 100.0 MΩ・cm.The high performance and high precision is maintained while simultaneously measuring the output of the resistivity of different two locations. This is carried out in a single converter for overall cost efficient performance.
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Automated Temperature Resistance Standard
Measurements International Ltd.
Exceptional Stability, Cost-effectiveness, Performance-based Results, 10 Ω, 25 Ω, 100 Ω, 200 Ω, 400 Ω and 1000 Ω Internal Standards, Built-in Temperature Chamber for Optimal Performance.
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Concrete Surface Resistivity
Surf
Giatec Surf™ is a laboratory test device for rapid, easy and accurate measurement of the surface electrical resistivity of concrete based on the four-probe (Wenner-Array) technique. The Surf™ patented technology automatically measures resistivity around the concrete specimen using four channels of 4-probe array (located at 90° from each other). The PC software generates the required reports according to the standard specifications.
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Battery Ground Detector
BGD
Battery Ground Detectors supply contact closures for alarm indications at precise ground fault resistance settings.
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Resistivity Meters
Periodic compliance checks of ESD work surfaces are super important. Monitors only verify the ground plane, or path to ground. The surface itself can wear down, become dirty, or if you use low quality mat—just not hold up. A handheld Surface Meter is great for running monthly, or prescriptive compliance verification of your ESD surfaces.
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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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Low On-state Resistance
Is a low output capacitance solid state relay containing a GaAs LED on the light emitting side (input side) and MOS FETs on the output side. A small flat-lead package has been provided which realizes a reduction in mounting area of about 50% compared withthe PS78xx series. It is suitable for high-frequency signal control, due to its low C × R, low output capacitance, and low off-state leakage current.
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Resistance Temperature Sensors
Watlow Electric Manufacturing Company
These sensors are suited for applications where accuracy and stability are essential for proper control in applications that operate at or below 1200°F (650C).
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Decade Resistance Substituter Lab Standard
HARS-LX Series
The HARS-LX substituter is a precision resistance source with excellent characteristics of accuracy, stability, temperature coefficient, and power coefficient. All these features serve to make it a laboratory resistance standard, exceeded in performance only by stand-alone standard resistors.
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Ground Threat Emitter Sensor System
GTESS
The Ground Threat Emitter Sensor System (GTESS) is a modular test and training system capable of stimulating multi-spectral aircraft electro-optic sensor suites at long range. The GTESS system integrates Textron Systems’ ultraviolet (Mallina™), infrared (Phoenix) and/or laser (Phantom™) ranged stimulators with an automated tracking system to facilitate fast-moving test, training and evaluation exercises. A fully integrated camera system for effective after action review. GTESS can also work in conjunction with Textron’s radio frequency (RF) range stimulator systems (PRTS™ & HPRTS) for complete multi-spectral testing.
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Insulation Resistance Measuring Equipment
AMIC-5010
Insulation resistance measurement - 15TΩ: * 50 - 1000 V, in 10 V steps, * 1000 - 5000 V, in 25 V steps ; Memory of 999 results and transmission to PC ; Measurement of AC and DC voltage and capacity ; Measurement of leakage current and function with digital filter ; Measurement of continuity of protection and equipotential connections ; Adjustable alarm limits
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Truck Mounted Static Grounding Verification
Earth-Rite MGV
The Earth-Rite Mobile Ground Verification system (MGV) is a unique, patented technology designed to provide automatic confirmation of a positive electrostatic ground connection for trucks collecting and transferring flammable / combustible products.
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Ground/Insulation Resistance Test Series
Wuhan Huatian Electric Power Automation Co., Ltd.
Ground/Insulation Resistance Test Series by HVTEST
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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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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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Rub Tester and Abrasion Tester
RT4
This comparative test works by abrading a printed sample against a reference material under known conditions. The results can be used to identify alternative substrates, better ink and coating formulations or the suitability of finished cartons, films or printed books, magazines and promotional materials.
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AC/DC Withstanding Voltage& Resistance Tester
TH9201B
Changzhou Tonghui Electronic Co., Ltd.
TH9201 AC/DC withstanding voltage & insulation tester is a kind of Hipot Tester. Due to simple and compact structure, mature technique, brand new structure and operating interface, the operation becomes more convenient, and more practical functions are included as well. TH9201S can be widely applied in transformer, device, component especially for winding safety inspection.Withstanding voltage test
