Ground Resistance Testers
See Also: Ground Resistance, Earth Resistance Testers, Ground Resistance Clamps
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Product
Transformer Winding Resistance Tester
KRI 9310
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KRI 9310 adopt Kelvin four-wire testing method, which effectively eliminates the influence of the resistance of the test line on the test results. It can be able to increases the current to 10A by which can test extremely low resistance to 0.01 Ω(such as amorphous alloy, Copper-nickel, nickel-chromium-iron, iron-chromium-aluminum etc). For the tested objects with high resistance value (CT/PT), the instrument can extend the range to 20 kΩ，so the wide resistance test range enables KRI9310 can cover 80% of the power transformer products on the market and switchgear bus-bar cable etc. The power of the tester use the built-in rechargeable lithium battery that can test hundreds of transformers by one time charging.
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Product
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
Ground Fault Locator
K-3837
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Kongter Test & Measurement Co., Limited
Kongter’s K-3837 Ground Fault Locator is developed to fast detect, trace and pinpoint virtual grounding faults on LIVE DC systems with earth fault. It will save you from long time unnecessary troubleshooting and helps to increase the stability of your electrical equipments. It is widely used in various DC systems including power utilities, locomotive, telecom and etc.
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Product
Safety Shoe Electrical Resistance Tester
UI-FT06
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Safety Shoe Electrical Resistance Tester is to test the electrical resistance of conductive footwear and antistatic footwear.
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Product
Contact Resistance Meter
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The Motwane Manufacturing Company
High contact resistance values are a definite cause of the failure or less than optimal performance in a wide variety of electrical devices. Contact resistance testing is therefore most critical to measure the resistance of electrical connections in switching devices, circuit breakers, isolators, busbars, relays, joints, connectors, cables, and cable joints. The device helps to find destructive or corroded contacts and hence protects substation devices from damage.
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Product
Linear Polarization Resistance Probes
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Linear polarization resistance (rosion probes are commonly used in the water treating industry and other environments where instantaneous, on-line corrosion rate readings are required. Linear polarization probes are ideally suited to monitor fluctuations that may occur within a system; for example, these probes can be used to monitor corrosion inhibitor effects on a regular basis.
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Product
Ground Fault Locator
GFL-1000
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The GFL-1000 ground fault locator is used to pinpoint faulty grounding where electrical cables have breakage and lost to the ground. The GFL-1000 is recommended by NERC PRC-005-2 to inspect for unintentional grounds for VLA, VRLA and NiCad batteries every four calendar months. Included software allows for data management analysis.
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Product
Insulation Resistance Measurement
MI20KVe
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The MI-20KVe High-Voltage insulation tester is a truly portable device that allows the measurement of insulation resistances using test voltages up to 20 kV.
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Product
AC Load Bank (Resistive)
K-1000 Resisitive
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Kongter Test & Measurement Co., Limited
The kW of a resistive load bank is “real” power in electrical terms. When a resistive AC load bank is used to test an engine generator set the engine will produce its full horsepower rating, dissipate engine exhaust gases, and produce thermal energy into the engine cooling system. The resistive load bank in fact, will completely test the engine and its various systems.
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Product
4-Wire Resistance Measurement | Continuity & HiPot Cable & Wire Harness Testers
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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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Product
Resistivity Meter
Model 2180
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The unit is compact and lightweight. The basic system is 7″ wide by 2.5″ high and 12″ long. When measurements are needed below approximately 100 micro-ohm-centimeters, the basic system is piggybacked onto a second enclosure that houses a power amplifier with a current gain of ten. The combined unit measures 7″ wide by 5″ high and 12″ long. The combined unit weighs 11.5 pounds. Two short cables interconnect the two enclosures for powering the power amplifier and routing the signals to the fixture or four point probe. The front panel of the basic system includes a 32-character backlit LCD display and a set of function keys. An easy-to-use menu will allow access to user defined parameters such as sample thickness, sample volume, and calibration constants; upper and lower alarm limits, relative measurements, and several others.
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Product
Non-Trip Earth Resistance Measurement
M73
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M73 has been developed for operators who mainly work on private installations. M73 is very easy to use, it is very small in size and it carries out all necessary tests to establish COMPLIANCE (and hence ensure SAFETY) of an electric system.
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Product
Automated Temperature Resistance Standard
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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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Product
Contact Resistance Meter
CRM 200B
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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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Product
Concrete Surface Resistivity
Surf
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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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Product
Handheld Turns Ratio & Winding Resistance Tester
TWR-H Series
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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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Product
Decade Resistance Boxes
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A range of units to cover the requirements of development laboratories and calibration and test departments. High resistance instruments provide reliable calibration of insulation testers.
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Product
Resistance Substitution Box
RS Series
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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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Product
Ground Fault Location
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Kongter Test & Measurement Co., Limited
Kongter offers a whole line of ground fault locator from basic to advanced model to fast detect, trace and pinpoint virtual grounding faults in DC systems when systems are LIVE (working online). Without injecting any signal to the DC system, they are safe to your existing system. With Kongter’s unique technique for signal tracing, these ground fault locators are much faster and more effective to find the earth fault in the field than its peers.
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Product
DC Ground Fault Finder
FST-JD200
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Foresight Electronics Co., Ltd.
FST-JD200 not only can provide a solution on accurately testing the faults of the indirect-grounding of the direct current system, non-metal grounding, loop grounding, simultaneous grounding of the anode and cathode, balanced grounding of the anode and cathode and multi-point grounding 1.
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Product
Transformer Winding Resistance Meters
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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.
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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.
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[5kV AC/6kV DC] Hipot and Insulation Resistance Tester, Rise/Fall-Time Control Function Equipped
TOS5300 Series
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The "TOS5300 Series" is a series of test instruments used in Hipot (withstanding voltage) tests and insulation resistance tests, two of the four tests regarded as necessary for ensuring the safety of electrical products. With an output of 5 kV/100 mA (AC) and 6 kV/10 mA (DC), the series can be used in Hipot (withstanding voltage) & insulation resistance testing of electronic equipment and electronic parts, based on the requirements of IEC, EN, UL, VDE, JIS, and other international safety standards and the Electrical Appliance and Material Safety Law. Also, the test voltage stability is improved with the adoption of a newly developed switching amplifier. Since the output voltage can be kept constant even when the AC line voltage or frequency changes, consistent testing can be performed, even when the power supply environment is in an unstable region. The TOS5300 is also equipped with a number of features that are capable of meeting a variety of test needs. It is a new low-cost standard model that provides thorough operability, reliability and safety.
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Product
System Grounding & Earthing Analysis
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ETAP's system grounding & earthing foundation automatically detects the system earthing configuration based on source and transformer grounding or earthing type selection. The resulting earthing types are displayed both on the one line diagram and for the various connected cables.
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Product
Ground EMI Filters
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High-frequency signals on ground is never good news - it interferes with normal operation of equipment and creates electrical overstress (EOS). However it is easy to block propagation of EMI on ground by installing highly-effective ground EMI filtes in ground lines. Our unique patent-pending ground EMI filters provide very low impedance for DC and mains' power while effectively blocking propagation of high-frequency currents throughout facility or equipment ground. Ground filters meet safety standards, as well as ANSI/ESD S6.1 and ANSI/ESD S20.20.
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