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Ground Resistance
Evaluation of the conductance of earth grounding.
See Also: Ground Resistance Clamps, Ground Resistance Testers, Surface Resistivity
- Pickering Interfaces Inc.
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Resistance Temperature Detectors (RTD) Simulators
Simulation of resistance based temperature sensors such as positive or negative temperature coefficient thermistors. Resistance Temperature Detectors (RTDs) can be wire-wound or thin film. Our RTD simulator modules provide a cost-effective method of simulating both PT100 and PT1000 RTD sensor types that require fine setting resolution.
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Earth Resistance Meter
EM 4058
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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Surface Resistance Meter
990SRM
The Model 990SRM is a convenient, pocket-sized meter for measurement of surface resistivity and resistance to ground.
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Earth Leakage Breaker And Residual Current Device
IGR Series
IGR Leakage Current Analyzer is invented as the world first, and also can measure Insulation Resistance (MO) without power cut-off. This patented instrument can analyze leakage current, and display Igr(resistive), Igc(capacitive), and Io(vector sum), Ground Insulation Resistance, and the phase angle between voltage and current. (IGR ELB) - Operates due to Igr. - Properly-operating in spite of IGC in digital era. ( Not tripping on UPS load and Harmonics and noise area) - Possible to go down Igr for safety of people and animals. - Possible to manufacture high sensitive ELB. - Possible to prevent fire from electric leakage current.
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NI-9226, 8-Channel, 400 S/s Aggregate, 0 Ω to 4000 Ω, PT1000 RTD C Series Temperature Input Module
783864-02
8-Channel, 400 S/s Aggregate, 0 Ω to 4000 Ω, PT1000 RTD C Series Temperature Input Module - The NI‑9226 is a resistance temperature detector (RTD) input module. You can configure the NI‑9226 for two sample rate modes: high sample rate or high resolution. The NI‑9226 is compatible with 3‑ and 4‑wire RTD measurements, and it automatically detects the type of RTD (3‑ or 4‑wire) connected to the channel and configures each channel for the appropriate mode. The module provides per-channel current excitation. The NI‑9226 features calibration and includes a channel‑to‑earth ground double isolation barrier for safety, noise immunity, and a high common-mode voltage range.
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Hipot Testers
Hypot® Series
The Hypot Series sets the standard for safety and efficiency in production line Hipot Testing. Whether your application requires AC Withstand tests, DC Withstand tests, or Insulation Resistance tests, The Hypot Series provides innovations that will allow you to begin achieving best practices for safety and efficiency without the need for an expensive automated test system or connection to a PC. You can even connect the Hypot Series with the HYAMP Series to form a seamless safety compliance system for Hipot and Ground Bond Testing.
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NI-9216, 8-Channel, 400 S/s Aggregate, 0 Ω to 400 Ω, PT100 RTD C Series Temperature Input Module
783863-01
8-Channel, 400 S/s Aggregate, 0 Ω to 400 Ω, PT100 RTD C Series Temperature Input Module - The NI‑9216 is a resistance temperature detector (RTD) input module. You can configure the NI‑9216 for two sample rate modes: high sample rate or high resolution. The NI‑9216 is compatible with 3‑ and 4‑wire RTD measurements, and it automatically detects the type of RTD (3-‑or 4‑wire) connected to the channel and configures each channel for the appropriate mode. The module provides per channel current excitation. The NI‑9216 features calibration and includes a channel‑to‑earth ground double isolation barrier for safety, noise immunity, and a high common-mode voltage range.
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Miller 400A
44500
Rugged, lightweight case - safe to use on wet ground. Weatherproof, even with lid removed - IP67 rating for dust and water intrusion. Convenient case lid removal for ease of movement, with test leads attached, to new measurement locations. Resistance measurement range from 0.01Ω to 1.1MΩ . Resistance measurements are unaffected by any stray interference signals that may be present in the earth during readings, due to the use of narrow band-pass filters centered at 97Hz (the unit’s operating frequency). Runs on a set of C-cell alkaline batteries...no need to periodically recharge the unit or to plug it into a power source
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Resistance, Ground Testing, Battery And Power Quality
Our testing equipment works wherever you are, whenever you need it, with precision and reliability.
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Electrical Safety Analyzer
19032
Chroma Systems Solutions, Inc.
Our Electrical Safety Analyzers combine Hipot, Insulation Resistance ( IR), Ground Bond (GB), Leakage Current (LC)/AC LC/DC LC, and Dynamic Function Tests. Savings can be up to 50% of production line space by not having to purchase and rack several safety test instruments. It also increases efficiencies of electrical safety testing and reduces associated labor costs.
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Service Ground Test Set
900
TESCO’s Service Ground Test Set has been designed to check the condition of the ground connection on a secondary service. If for any reason the ground connection has a resistance, this can be immediately detected by the Test Set. The Service Ground Test Set consists of a voltmeter which can be shunted by a resistance of 60 ohms. The voltmeter is of the suppressed zero type with a double range, from 65 to 130 or from 130 to 260, and can be used for checking service voltage independently of the ground test.
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Earth Ground Tester
Weshine Electric Manufacturing Co., Ltd
UT520 series can perform precise 3-wire and simple 2-wire earth resistance measurement for power and electrical systems, lightning protection equipment, and ground system of all electrical equipment.
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Resistivity Meters
Precisely Measure Surface Resistivity, Volume Resistivity, or Resistance to Ground. Advanced Energy's Trek and Monroe resistivity meters offer accurate and repeatable measurements for surface resistivity, volume resistivity, or resistance to the ground.
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Sensing Resistors
Resistive Voltage Dividers
NGR Sensing Resistors are attached in parallel to the neutral grounding resistor. The sensing resistor allows a protective relay to detect a resistor failure in a continuous manner. Sensing Resistors are used in combination with neutral grounding resistor monitor relays. The relay measures neutral grounding resistance, neutral grounding resistor current and neutral to ground voltage. The relay continuously measures neutral grounding resistor ohmic value in an unfaulted system and it trips on if neutral grounding resistance varies from its calibrated value.
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Ground Grid Tester
GGT Series
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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High Resistance Neutral Grounding Devices
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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POWER PROBE 4
PP401
*Electronic circuit and component tester that supplies battery ground and power along with 8 diagnostic testing modes to provide automotive technicians with detailed information on the circuits and signals being tested*Diagnostic Modes include: AC/DC Voltmeter, Ohmmeter, Frequency, Pulse width (Positive and Negative) Fuel Injector Tester, PCM/ECM Driver Tester and PPECT3000 Signal tracer*Tests for AC/DC voltage in 100ms and 50s resolutions, AC volts RMS and volts peak-to-peak, measure resistance, frequency and pulse width (negative and positive)
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Medical System
Sentinel I
Chroma Systems Solutions, Inc.
The Sentinel I System provides fully automated Electrical Safety Testing to IEC/EN/UL/CSA 60601-1. This system is ideal for testing medical products with one or no patient connections or low volume production where operators can manually change leads between different patient connections. This is a 5 in one Hipot test system that can test Hipot, Ground Bond, Insulation Resistance, Patient Leakage, Earth Line Leakage, Enclosure Leakage and Patient Auxiliary Leakage.
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Ohm-Stat Digital Display Megohmmeter
Measures resistivity RTT, RTV, and RTG 103-1012 ohms/sq., ohms, ohm-cmRelative humidity 10% 90% RHTemperature 32oF 100oFDigital display: easy to interpretNIST calibration includedIncludes chair probe to measure smocks, earth ground, chairs, and resistance probes: $400 value for freeResistivity probe built in the bottom of meterProduct conforms to the ESD S.20.20 spec standardsCE mark includedThe kit includes, two (5) lb probes, coil cords, hard carrying case, battery, 110v or 220v adaptor, garment clips, chair probe, and ground circuit tester
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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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Electrical Safety Testers
.AC/DC withstand voltage test & ground bond test .Insulation resistance test(ST60).Arc detection.Zero crossing turn-on,turn-off operation switch.Controllable ramp-up time .Ture RMS cut-off current measurement .Automatic fail indicator of alarm lamp and buzzer.VFD display.Standard PLC interface .Option RS-232,RS-485
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Earth Ground Resistance Meter
1623-2
The Fluke 1623-2 earth ground tester measures earth ground loop resistances using only clamps, only stakes, or one clamp and stakes. With the stakeless test method, the Fluke 1623-2 is able to measure earth ground loop resistances for multi-grounded systems using only current clamps.
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Rack Mount Cable Tester
AudioJog Rack
There are 2 rows of 6 LED's corresponding to each of the possible connector pins and one for the screen (or ground) connection. As each pin is activated, the LED's indicate all connections associated with that pin, so that short, open and crossed circuits can be easily found. The LED's also show the possibility of high resistance or leakage connections.
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Miller 400D
44550
No need to select ranges or adjust dials – the Miller 400D provides a direct read-out of resistance with the push of a button• Bluetooth interface allows optional data-logging via a Bluetooth-enabled PC (or PDA)**• Rugged, hard plastic case - safe to use on wet ground – IP67 rating for dust and water intrusion• Resistance measurement range from 0.01Ω to 10MΩ (auto-ranging) • High resolution digital display• Resistance measurements are unaffected by any stray interference signals that may be present in the earth during readings, due to the use of narrow band-pass filters centered at 82.2Hz (the unit’s operating frequency)• Runs on a set of replaceable D-cell alkaline batteries...no need to periodically recharge the unit or to plug it into a power source• Performs 10,000 single readings on a fresh set of batteries• Integrates with Universal Rectifiers’ Soil Depth Selector/Multi-Pin Cable Harness System (please see Integration with Universal Rectifiers’ Cable Harness)
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UNI-T Series
Weshine Electric Manufacturing Co., Ltd
mainly used to measure the wire resistance of cables, the contact resistance ofswitches, connectors, relays, the resistance of coils, motors, transformer windings, and equipment enclosures, lightning protection belts, ground beams, structures, cabinets, steel bars, Test the connection resistance between metal components of water pipes, windows, guardrails, radiators, assembly lines, etc. It is widely used in telecommunications, electric power, meteorology, computer rooms, oil fields, power distribution lines, tower transmission lines, gas stations, factory grounding grids, lightning rods, etc.
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Step & Touch & Earth Impedance
The kit applyed with STS 5000, STS 4000 or eKAM, allows to perform the following types of test: soil resistivity, ground grid resistance, step and touch tests and overhead lines zero sequence and mutual coupling coefficients
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Resistance Grounded Systems (HRG/LRG)
Neutral Grounding Resistors (NGRs) are used to limit the maximum ground-fault current. Restriction of fault current lowers hazards and reduces damage done to equipment. High Resistance Grounding (HRG) systems are often used on industrial and critical power applications to maintain system uptime during a first ground fault. HRG systems are also used in tripping applications to help control touch potential on portable loads and improve personnel safety.
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AC Ground Bond Tester
448
Our 448 model is a 4-in-1 tester with 500VA AC Hipot, DC Hipot, Insulation Resistance and Ground Bond testing capabilities. The 448 is capable of a 500VA AC Hipot output to comply with 100mA leakage current test compliance requirements. This tester features a simple design and easy-to-use interface, reducing setup time and increasing production-line throughput for your application.
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High Voltage Insulating Tester
Suitable for preventive maintenance of gapless arresters.By simply clamping around the ground wire of an arrestor with a clamp CT, it detects leak current and leak current resistance components.
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Installation Testers
Offers two models that verify the safety of electrical installations in residential, commercial and industrial applications. Has been developed to carry out the following safety measurements of electrical installations in accordance with EN 61557 and DIN VDE 0100: Insulation resistance, RCD tests, Low Ohm resistance, Earth ground resistance, Loop impedance, Phase sequence.
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Solid State Relays for Switching Heavy Loads with Physically Small 6-pin DIP Package
Part No. ZD20CD
Series ZD20CD solid-state relays use an advanced design capable of switching heavy loads in a physically small 6-pin DIP package These relays have a power FET output that ensures low ON resistance and low leakage current. Optical isolation ensures complete protection of signal lines, power and ground bus and control circuits from switching noise and EMI.MSL 6ZD20CD 1A, 60Vdc Load; 8-20mAdc Control; through hole mountedSZD20CD 1A, 60Vdc Load; 8-20mAdc Control; surface mounted
