Ground Resistance
Evaluation of the conductance of earth grounding.
See Also: Ground Resistance Clamps, Ground Resistance Testers, Surface Resistivity
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Ground Threat Emitter Sensor System
GTESS
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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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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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Setaflash ‘Series 8’ Active-Cool (Corrosion Resisting)
6910
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The Elcometer 6910 Setaflash ‘Series 8’ Active-Cool (Corrosion Resisting) offers the same feature as the Active Cool Closed Cup Tester but comes with a corrosion resisting insert in the cup for testing corrosive samples.
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Product
AC Load Bank (Resistive & Inductive)
K-1000 Resistive & Inductive
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Kongter Test & Measurement Co., Limited
Kongter resistive & inductive AC load banks are used to simulate the motor loads or other electromagnetic devices working at their rated power factor. Many backup generators and turbines are rated at 0.7, 0.8 or 0.85 power factor and need to be commissioned at nameplate capacity using a combination of resistive and reactive load to fully qualify their operating capability. Using a resistive & reactive load bank enables comprehensive testing from a single unit.
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Handheld Contact Resistance Tester
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Weshine Electric Manufacturing Co., Ltd
The hand-held Circuit resistance tester is an innovative product. The product is compact, hand-held operation, battery power supply, easy to carry. The product is mainly used in the measurement of contact resistance and other micro-Euclidean resistance of switch contacts. The test speed is fast and the accuracy is high.
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Stator Ground Protection Relay
SEL-2664S
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Schweitzer Engineering Laboratories, Inc.
Protect high-impedance grounded generators from ground faults at standstill, during startup, and while running with the multisine frequency injection and neutral overvoltage-based protection in the SEL-2664S.
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Contact Resistance Measurement System
CRMS
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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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Winding Resistance Tester
JYR-50C/40C/20C
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1. With demagnetization function.2. Testing range reach to 20k3. Also apply to testing tranformer with high winding resistance.
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Product
Electrometer / High Resistance Meter, 0.01fA
B2985B
Electrometer
The B2985B Electrometer/High Resistance Meter is the world’s only graphical electrometer that allows you to confidently measures small currents with 0.01 fA (0.01 x 10-15 A) resolution and large resistances of up to 10 PΩ (10 x 1015 Ω). It possesses a 4.3” color LCD with a graphical user interface that provides trend chart and histogram data in addition to numeric information.
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Ground Grid Tester
GGT Series
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The GGT500 ground grid integrity tester is designed for inspection of the substation ground grid. It can also be used as a portable micro-ohmmeter with Both Sides Grounded and Remote Control functionalities. It is intended to inspection the conditions of a grounding system beneath substations, testing of medium- and high-voltage circuit breakers, disconnecting switches, high-current bus bar joints, cable splices, and different high-current links.In the United States when inspecting the quality of the grounding systems beneath a substation, the proper procedure is to inject 300 A DC during a time period of 60 s. This is what the GGT500 will do, and in that time period, the current path and voltage drop are checked. Also acting as a micro-ohmmeter, the GGT500 can test low resistance values by producing high test currents of up to 500 A.The instrument is placed in an unbreakable, plastic case with IP67 protective rating (with closed lid). Although very portable and lightweight, micro-ohmmeters have very high output power capabilities. High output voltage enables a wider measurement range at higher test currents, as well as the use of thinner/longer test cables. GGT500 ground grid integrity tester generates a true DC ripple-free (less than 1 % ripple) current with automatically regulated test ramps. This significantly decreases magnetic transients and ensures great accuracy.When used for testing in Both Sides Grounded conditions, a special current clamp powered from the ground grid integrity tester is used for measuring a current through groundings. If even a higher safety level is required, the remote control feature enables the operator to perform measurements from a distant location, away from the instrument and test object.
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Above Ground Insulator Tester / RF-IT
RF-IT
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Hand Held InstrumentEasily locates shorted bolts, replaces bolt to boltUse on structure with or without CPUses Radio Frequency to test effectiveness of above ground insulatorsAuto Shut-Off feature
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High Power Resistance Decade Box
HPRS Series
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The HPRS Series resistance decade boxes employ state-of-the-art precision resistors of various types for high accuracy, high stability, and low temperature and power coefficients of- resistance. High-power resistors within the unit are made available without sacrificing other electrical properties.
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Resistance Wire Bonding
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Electronic Systems of Wisconsin, Inc.
ESW's Resistance Wire Bonding System comes equipped with the latest features the market has to offer. Our system is capable of bonding armatures, stators or coils. The on-screen display in our bonder makes it easy to read, track, and record your bonding data. If desired, ESW offers complete electrical testing of the part prior to the bonding sequence as well. This ensures only good parts that have been electrically tested are processed through bonding. It is our duty to make sure you never have to worry about losing important information again. Our Sales and Engineering staff will work closely with you to make sure that a bonding systems will meet your needs. See the slideshow below to see some of our Resistance Wire Bonding Testers.
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Earth Resistance
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Precision Mastech Enterprises Co.
Specialized instruments designed to measure the effectiveness of earthing systems, ensuring electrical fault currents safely dissipate into the ground to protect people and equipment.
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Metal Foil Low Resistance Chip Resistor
MFF
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*Low Resistance / TCR / EMF / Inductance*Excellent long term stabilityRoHS compliant and halogen free.*Lead free.*High precision current sensing and voltage division.
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Product
Electrometer / High Resistance Meter, 0.01fA, Battery
B2987B
Electrometer
The B2987B Electrometer/High Resistance Meter is the world’s only graphical electrometer that allows you to confidently measure small currents with 0.01 fA (0.01 x 10-15 A) resolution and large resistances of up to 10 PΩ (10 x 1015 Ω). In addition, battery operation eliminates AC line noise from your critical measurements.
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New Resistivity Inversion Software
EarthImager 3D
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AGI is proud to introduce the new EarthImager 3D resistivity and IP inversion software. This software inverts resistivity and IP data acquired with electrodes arranged in boreholes and/or on the surface and presents a 3D volume of inverted resistivity data with advanced volume rendering technique. The final resistivity or IP image-volume can be rotated in any orientation, zoomed in and out, and translated to anywhere inside the image window in order to see the volume of interest in detail. Colors representing areas of less interest can be made transparent so that the shape of a pollution plume, for example, can be visible. With EarthImager, 3D resistivity inversion can be as easy as two steps: Read Data and Start Inversion with only a few mouse clicks.
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Resistance Calibration
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Process Instruments maintains fractional part-per-million accuracy with a state of the art resistance calibration facility. Specialized services include precision resistor manufacture, resistor and shunt repair, characterization of alpha and beta temperature coefficients and the determination of barometric effects on resistance values.
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Resistance Decade Box
HARS Series
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The HARS Series is the best choice when you need a laboratory grade, tight tolerance, high performance resistance decade box that is also cost effective.
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Surface Insulation Resistance Testing
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Following over 2 years of intense research and development, we are proud to introduce the next generation of equipment used to measure changes in Surface Insulation Resistance.
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Fungus Resistance Testing
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End-to-end testing helping you ensure your product's performance and resilience against fungal growth and fungus-susceptible field environments.
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Personal Grounding Tester
PGT120
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Electronic test apparatus for checking personnel grounding systems such as electrostatic wrist straps and conductive footwear. The unit is equipped with two separate measuring circuits and is therefore capable of checking wrist straps and footwear separately or in parallel. The test result is signaled visually, acoustically (only if error is detected) and via contacts.
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Contact Resistance Test Sets
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When a high current passes through a pair of mechanically independent metallic contacts, the resistance must be as low as possible. An increase in resistance can lead to additional degradation, as I2R losses will cause local heating of the contact surfaces. Our range of micro-ohmmeters measure both steady state and dynamic low resistance values. With test currents up to 600A available, logging and trending are also available on some models. We ensure that our Contact Resistance tests sets are portable, making them suitable for field measurements. Our contact resistance testers’ portability makes them ideal for a vast range of resistance testing across the entire LV, MV HV and EHV spectrum.
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Product
Automatic Oil Tan Delta & Resistivity Kit
MOTR
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The Motwane Manufacturing Company
Motwane's MOTR is multifunctional automatic test kit designed for accurate measurement of the Dielectric Constant, TanDelta, Resistivity & capacitance of transformer oil & other electrical insulating liquids. It has preprogrammed test sequences as per various International standards along with customized test sequences as per user requirements. Internal memory for 250 tests provided with PC interface & report generation facility. Inbuilt thermal printer for onsite results. Test cell is designed as per IEC247 with calibrator for onsite calibration of kit.
