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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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Hardness & Scratch Resistance
Hardness can be defined as a material’s resistance to permanent deformation. In the coatings industry, hardness measurement can be used to determine the resistance of the coating to scratching from general wear and tear and also if a coating is fully cured.
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Three-Phase Transformer Winding Resistance Meters
TWA Advanced Series
TWA Advanced series is the latest DV Power solution for three-phase transformer winding resistance measurement and tap changer analysis. They are capable of testing six transformer windings with a single cable connection, as well as three-phase automatic transformer demagnetization. It has the option of the automated test mode, where the instrument operates the tap changer without operator input (minimizing the risk of human error) and records winding resistance results based on pre-selected stabilization criteria.The unique DVtest method of tap changer analysis 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, together with the measurement of tap changer motor current which detects 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 simultaneously on three phases. It can also be performed together with the winding resistance test in all tap positions.A unique advantage of TWA Advanced instruments 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 speed up the testing– for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.TWA500 is equipped with a large 10.1” graphical touch-screen display, while TWA400 has a 7” graphical touch-screen display. Besides making the interface much more user-friendly compared to older winding ohmmeters, it also enables certain test options that were previously available only with DV-Win software. The most important among them are DVtest, tap changer motor current measurement, “Heat Run” test, test templates, and automatic test mode.
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Contact Resistance Meter
4.5 Digits LED display Range : 0 TO 1999.9 W to 199.99mW High Measurement Current : 100A DC max. True Four wire resistance measuring technique eliminates lead resistance errors inherent in 2 wire systems. Fully protected against overloads. Proven design
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Transformer Resistance Testing
Weshine Electric Manufacturing Co., Ltd
Transformer insulation resistance deterioration is one of the most common causes of transformer failure: a failing transformer is a costly replacement in an electrical system with the potential for a long downtime. If you fail to maintain your transformer with regular insulation resistance testing (as can be carried out by the WESHINE Transformer Ohmmeter (VS-3110 series) of transformer test equipment) then it’s likely to fail before reaching its maximum operating life.
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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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Femto / Picoammeter and Electrometer / High Resistance Meter
B2980A Series
Both the picoammeters and electrometers provide a world-best performance of 0.01 fA (0.01 x 10-15 A) current measurement resolution. In addition, the electrometers can measure resistance up to 10 P (10 x 1015 ), which is also a best-in-class specification. Finally, since AC power line noise can be difficult to eliminate when making low-level measurements, both the picoammeters and electrometers are available in battery powered versions.
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IEC60558 Insulation Material Layer Abrasion Resistant Test Device
CX-J16
Shenzhen Chuangxin Instruments Co., Ltd.
This test is conforms to IEC60558-1 Fig6 and IEC60065 Fig14--16.The test shall be performed by fixing the specimens of thin sheets on a mandrel made of nickel plated steel or brass with smooth surface finish.
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1μΩ-4kΩ AC Milliohmmeter Low Resistance Tester
TH2521
Shenzhen Chuangxin Instruments Co., Ltd.
TH2521 AC Milliohmmeter is a high-performance and intelligent tester widely used to test contact resistance, internal resistance and battery voltage. The application of constant current source with 1kHz frequency can greatly eliminate the potential error caused by thermoelectricity on DUT. This meter has the function to automatically detect contact failures on test cable. At the range of 30mΩ, basic R resolution can reach 1μΩ. It is applicable for transformer, inductance coil copper resistance, relay contact resistance, switch, connector contact resistance, wire resistance, PCB line and via reistance dan metal defect detection, etc. In the mean time, signals, such as HIGH, LOW, PASS, can be output through HANDLER interface, thus it is very convenient to be used in automatic production line.
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Atlas ESR PLUS - Equivalent Series Resistance Meter
ESR70
The Atlas ESR provides instant measurement of a capacitor's ESR and it's capacitance value. Using the supplied gold plated probes (removable), the Atlas ESR can measure ESR down to a resolution of 0.01 ohms, up to 40 ohms. It can even measure ESR for capacitors that are in-circuit. Measurements are made at the industry standard frequency of 100kHz. Probes are now removable, allowing 2mm compatible probes to be fitted. Audible alerts are produced for various ESR levels allowing you to perform many tests in succession without having to look at the display.
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Single-Phase Transformer Winding Resistance Meters
RMO-TD Series
Using the most advanced switch-mode technology available today, the RMO-TD series is ideal for winding resistance measurements of inductive objects. Transformer resistance meters and tap changer analyzers are perfect for testing:transformer windings (power transformers, distribution, autotransformers),all types of tap changers,generators,electrical motors,high-current busbar joints,cable splices,and welding joints.In addition, transformer demagnetization can also be done with all RMO-TD instruments.The RMO-TD series contains 3 models, with maximal test currents from 25 A (RMO25TD) to 60 A (RMO60TD).The three independent voltage sense channels enable testing of three windings in series. This enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.All RMO-TD transformer resistance meters have a built-in tap changer control unit. It enables remote control of on-load tap changer (OLTC) directly from the device. In order to make the most out of this feature, DV-Win software is included which can be programmed to do everything automatically – running winding resistance tests and changing OLTC tap positions.The DV-Win software also enables control and observation of the test process, as well as saving and analyzing the results on a PC. It provides a test report, arranged in a selectable form as an Excel spreadsheet, PDF, Word, or ASCII format. Additionally, DV-Win measures and calculates the OLTC transition time, the ripple and the winding resistance for each tap changing operation. The software can also perform the calculations necessary for the “Heat Run” test.All results can be exported in the report format.
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Automatic Oil Tan Delta & Resistivity Kit
MOTR
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.
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Full- Channel Resistivity Meter
ZZ Universal 64
ZZ Resistivity Imaging Pty. Ltd.
Comprehensive resistivity instrument. 61 channel system.
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Non-contact Sheet Resistance Multi-points Measurement System With Wide Range
NC-80MAP
*Possible to measure wide range of sheet resistance by installing Max. 4 probes*Min. 7 mm position from edge can be measured*User programable measurement pattern & programmable measuring pattern
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Winding Resistance Meter
TRM 50+
SCOPE introduces 50 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 50 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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Contacts Resistance Tester
JYK II
•Instrument IPC architecture for domestic production of all models of metal contacts SF6 switchgear, GIS combination of electrical, vacuum switch, oil switch and column switches, contacts and so on.•Sensor: Acceleration speed sensor, rotation speed sensor, linear stroke sensorinstallation is very easy and simple.•Trigger: The trigger, external trigger, the sensor is triggered. Sensor can trigger the circuit breaker manually switching characteristic test, such as a manual column pole division switch.
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Electrical Resistivity Instrumentation
The resistivity survey method is more than 100 years old and is one of the most commonly used geophysical exploration methods (Reynolds, 1997). It has been used to image targets from the millimeter scale to structures with dimensions of kilometers (Linderholm et al., 2008; Storz et al., 2000).
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5KV Digital Insulation Resistance Tester
The high voltage insulation resistance tester is a handheld instrument designed primarily to measure AC DC voltage. Resistance, Continuity test/Insulation resistance.
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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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3 Wire (Analogue) Earth Resistance Tester
4105 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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Surface & Volume Resistivity Meter for Nonconductive Materials
Hiresta UX
The new Hiresta-UX is a high performance meter for measuring the surface and volume resistivity of a wide variety of nonconductive materials. With an extended measurement range of 103 ~ 1014Ω, this meter is ideal for Production, Engineering, R&D and Quality Control. The new Hiresta-UX features powerful new algorithms that automatically choose the right voltage, which optimizes the surface and volume resistivity testing. This versatile, high performance resistivity meter includes a built-in switch box that can be mated with a J-Box (meets JIS K 6911 for surface & volume resistivity and is compatible with ASTM D 257) as an option. The Hiresta-UX can store up to 2,000 measurement results, which can be easily exported to a USB memory device.
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DC Resistance Tester
DCSS502BC
Resistance meter is designed to measure copper resistance of transformers, wires, cables, other conductors and other coil products etc. It is widely used of low resistance measurement of switches, heater wires, transformers, relays, motors, electric films and PC circuit boards, wires, cables, etc. With reliable Good/ NG judgement, it is a premier resistance meter for the use in production line or QC department.
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Earth resistance meters
The PROMAX earth meters guarantee the proper operation of industrial and home electrical circuits.
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Low Resistance Test System
9100-2
Palico Instrument Laboratories
The Model 9100-2 measures the resistance of single or multiple battery separators quickly and accurately when used with our Model 9000-9100 Electrolyte Test Bath. This system uses a 4-terminal measurement technique which cancels the effects of electrode/electrolyte potentials.
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Insulation Resistance Tester
HT2672 / 762
Wuhan Huatian Electric Power Automation Co., Ltd.
Mainly used to check the insulation resistance of electrical equipment or electrical lines to ground and phase to ensure the normal operation of these equipment.
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ITO Sheet Resistance Standards (ITOSRS)
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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Contact Resistance Meter
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.
