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Primary Testing Technique
Individual components for instrument transformer testing technologyStationary and portable instrument transformer testing technologyprimary testing technique
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PD Surveyor with RFI & EMI Diagnostics
PDS200
The Doble PDS200 is a combination survey tool that uses radio frequency interference and electromagnetic interference diagnostics to find signs of partial discharge.This hand-held instrument is an ideal tool for a condition based maintenance program, allowing you to quickly find insulation defects in motors, generators, transformers, cable terminations and additional substation components.
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Transformer Winding Resistance Meters
TWA Standard Series
The TWA standard series instruments are designed to measure the resistance of six coils and simultaneously analyze the three-phase tap changer on load of the primary and secondary transformer coils (provided by model TWA40). This is done in a single cable configuration, with test currents up to 40A. Each transformer configuration has a special measurement algorithm that is optimized for rapid stabilization of test results. The TWA instruments generate a true DC current without ripple. Both current injection and magnetic circuit energy discharge are automatically regulated.
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Oil Resistivity & Tan Delta Test Set-Up
This testing set is an automated instrument, widely used for measuring electrical characteristics of insulating liquids, transformer oil and other insulating material samples.
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903 Benchtop Three Phase 40A
Weshine Electric Manufacturing Co., Ltd
1. The instrument has standard four phase voltage and three-phase current output. It can test not only various traditional relays and protection devices, but also various modern microcomputer protections, especially for transformer differential protection and standby automatic switching device. The test is more convenient and perfect.2. Classic Windows XP operation interface, friendly man-machine interface, easy and fast operation; high performance embedded industrial control computer and 8.4 inch resolution 800 × 600 TFT true color display screen, can provide rich and intuitive information, including the current working state of the equipment and various help information.
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Current Transformers
National Meter Industries Inc.
Is an instrument transformer, used along with measuring or protective devices, in which the secondary current is proportional to the primary current (under normal conditions of operation) and differs from it by an angle that is approximately zero.
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Transformer Turns Ratio Meter
TTRM 102
SCOPE introduces state of the art precision single phase Transformer Turns Ratio Meter (TTRM ) designed for field testing as well as factory testing of power transformers, instrument transformers and distribution transformers of all types. TTRM 102 along with turns ratio, measures ratio deviation, phase angle deviation, magnetizing current and detects tap-position of single phase transformer in charged switchyard condition. The range of AC voltage selection offers high accuracy in measurement.Both the instrument have in-built TFT display with touch screen and thermal printer. The user friendly, simple instrument makes the testing more easy. With the touch keypad it is possible to enter required DUT information.The ratio results are displayed with % error. Internal non-volatile memory gives the provision of storing test results.Further data can be downloaded to PC or copied to memory stick through USB port provided.
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Standard CT
6300A
The Model 2509 Instrument Current Transformer is a 6300 A ampere CT designed for precision measurement of AC current or for Instrument Current Transformer calibration applications. The CT can be installed on a bus bar or it can be used with a primary conductor consisting of number of turns. The 6300 CT is designed with a tapped primary & a tapped secondary winding, thus providing a large number of ratios over a range of 5 to 6300 amperes.
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SF6 Filled High Precision Standard Capacitors
YL Series
Shanghai Jiuzhi Electric Co., Ltd.
The SF6 insulated standard capacitor is used as Capacitance standard in measuring bridge Circuits to measure the dielectric dissipation Factor tanδ of all types including cables, capacitors, bushings, instrument transformers and power transformers. Further-more, It can be used as high-voltage capacitor for voltage divider circuits of high-voltage transformer test.
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Power Transformer Automatic Test Device
XD71
Hangzhou Xihu Electronic Institute
The device is used for power transformer power outage routine test items to do automated testing.Which is characterized by dielectric loss, insulation resistance, DC resistance, tap-changer switching characteristics, short circuit impedance and variable ratio of six test items are concentrated in an instrument,so that the instrument function, test power and test lead height fusion.Field test, just start wiring once, at the end of unplugging wiring once,the middle process by the test personnel in the computer terminal to send command control,the test system automatically completes all or part of the above test items.
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SAE AS5643 Mil-FireWire PXI Express Test & Simulation Instrument
HSSUB-6120
Avionics Interface Technologies
Highest density capability available in an AS5643 3U PXI Express, single slot instrument - Four (4) FireWire nodes, each with three (3) ports - Apps provide high-level (AS5643) and low-level (1394) access, while accommodating end-user customization - S100, S200, S400, S800 transfer rates - Support all Nodes operating concurrently at 800 Mbps - Independent transformer coupling for each port - Eight (8) standard PXI backplane triggers - Industry standard Texas Instruments IEEE 1394b Chipset - ANSI C (typical), C++/C#/LabVIEW
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Transformer Analyzer
505
The UTEC 505 Transformer Analyzer is designed for testing current transformers (CT) and potential transformers (PT) without interruption of the customer’s service. This instrument measures CT admittance, CT ratio, CT primary-to-secondary phase angle and the voltage, current and phase angle of the service. With the ‘Burden CT/PT Option’, it determines the CT secondary burden capability, the regulation of the PT and its secondary burden capability and provides for CT core demagnetization.
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LCZ LCR Meter
SS1062
This (SS1061 / SS1062 / SS1063) LCZ Meters are a test system for passive components designed for the use in electronic inspection or production process for quality control. They meet any demanding requirement on production speed and precision, discrimination of qualified products from unqualified ones, as well as internal setup, storing and calling function for up to 10 instrument groups, so they are actually optimum test instruments for component incoming and production inspection. Like as: transformer, inductor, resistor, capacitor, relay, motor, generator, eletric valve, contactor, cable, wire, etc..
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Transformer Turn Ratio Instrument
ART-3D
The ART-3D is high precision instrument designed to measure ratios, magnetization currents, phase-shifting in power transformers, distribution transformers, potential and current transformers, in conformity to IEEE C57.12.90 and CEI/IEC 60076.
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On Load Tap Changer Analyzer
TAP4
The TAP-4 is the first instrument to use vibro-acoustic measurement to perform tests on On-Load Tap Changers (OLTC). The TAP-4 is a universal device, it adapts itself to any type of transformers: MR Reinhausen, ABB, Ferranti, Federal Pioneer and others.
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AC Test Transformer
Shanghai Guantu Technology Co., Ltd.
How the AC test transformer prevents the overvoltage generated by the frequency conversion series resonance test device is a relatively simple problem, but the overvoltage caused by voltage fluctuation is difficult to appear when the overvoltage protection is set. Generally, the overvoltage of the frequency conversion series resonance test device will appear in the frequency sweep stage of the instrument, that is, in the process of finding the resonance point. Those who have used it know that in the process of finding the resonance point of the frequency conversion series resonance test device, the voltage and frequency have a parabola-like linear relationship. By default, the system finds the high voltage, that is, the apex of the parabola as the resonance point.
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LCZ LCR Meter
SS1061
LCZ Meters are a test system for passive components designed for the use in electronic inspection or production process for quality control. They meet any demanding requirement on production speed and precision, discrimination of qualified products from unqualified ones, as well as internal setup, storing and calling function for up to 10 instrument groups, so they are actually optimum test instruments for component incoming and production inspection. Like as: transformer, inductor, resistor, capacitor, relay, motor, generator, eletric valve, contactor,cable,wire,etc.
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Distribution Transformer Tester
NDB-DOC™
The NDB-DOC™ is a test instrument designed for distribution networks transformers from 10kVA to 2500kVA. It can determine the presence of short circuits or an open circuit in the distribution transformer primary winding & also short circuits on the secondary winding. The NDB-DOC™ is designed to be operated from an arial device or from the ground at the end of a hot stick without disconnecting the transformer’s secondary windings.
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Complete Transformer Test Bench
Weshine Electric Manufacturing Co., Ltd
Our multifunction Transformer Test Bench (VS-ZHSY Series) is intuitive with all of the ease of working with individual, dedicated instruments. We deliver this experience through our design philosophy. Rather than producing a single, complex system with afterthought towards rendering it friendly, we uniquely combine several intelligent instruments packaged as a single system.
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Tap Changer Analyzers & Winding Ohmmeters
Winding resistance test of inductive test objects, such as power transformers, is one of the most effective non-intrusive ways of checking its condition. Due to their advanced design, DV Power winding resistance meters provide high test currents (up to 100 A DC) and high accuracy (up to 0.1%) within light and portable test instruments. In addition to winding resistance measurement, it is also possible to perform simple, quick and reliable transformer on-load tap changer condition assessment by recording the test current during tap changer operation, also known as DVtest. Because of that, problems with a tap changer connection, contacts, and switching procedure can be detected.DV Power winding ohmmeters consist of single-phase RMO-T and three-phase TWA series. Models from the TWA series are designed for six-winding resistance measurement of power and distribution transformers, with only one single-step cable setup. As a result of reducing the total test time, it enables significant saving of time and money.Typical application areas of these instruments are high-voltage substations and industrial environments. They are intended to measure the resistance of:Transformer windingsOn-load tap changersGeneratorsElectrical motorsHigh-current bus bar jointsCable splicesWelding joints
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Test Sets For Diagnostic Testing
Test Sets For Diagnostic Testing are designed to test Oil Resistivity, Tan Delta, High Voltage Surge Comparison, etc. These test sets are automated instruments used to measure electrical features to insulate transformer oil, liquids and varied other insulating materials. They are ideal for revealing different localized problems and varied weak spots in the insulation. These modern testing sets are designed to provide high accuracy in results. In addition to this, they are easy to maintain testing sets available to ensure accurate readings.
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Primary Test Manager
The Primary Test Manager™ (PTM) software supports you during diagnostic testing, condition assessment and data management of medium- and high-voltage assets, such as circuit breakers, rotating machines, grounding systems, instrument and power transformers as well as bushings and on-load tap changers (OLTC).
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Low-Voltage Arrester Analyzer
Weshine Electric Manufacturing Co., Ltd
1. This instrument can be widely used in equipment maintenance of substations and power plants, and to measure insulation resistance, absorption ratio and polarization index of high-voltage electrical equipment such as transformers, reactors, capacitors, and circuit breakers. The leakage current of the low-voltage arrester of the power distribution cabinet is automatically tested.
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Transformer Tester
Kvtester Electronics Technology Co.,Ltd
High precision instrument for measuring characteristic parameters of transformer capacity, no-load and load. The instrument is a multi-function measuring instrument, which is equivalent to the usual two kinds of test instruments: the transformer capacity tester + transformer characteristic parameter tester. The utility model can precisely measure a series of power frequency parameters of a plurality of transformers, such as the capacity, the type, the no-load current, the no-load loss, the short circuit (load) loss and the impedance voltage.
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Voltage Transformer
Beijing GFUVE Electronics Co.,Ltd.
Are a parallel-connected type of instrument transformer. They are designed to present a negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering.
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Single-Phase Transformer Winding Resistance Meters
RMO-TT Series
RMO-TT series is perfect for measuring winding resistance of inductive objects such as power and distribution transformers or autotransformers. Additionally, every transformer resistance meter from RMO-TT series can analyze:tap changers,generators,electrical motors,high-current busbar joints,cable splices,and welding joints.Transformer demagnetization can also be performed with all RMO-TT instruments.The series is consisted of 3 models, with maximal test current from 40 A (RMO40TT) to 100 A (RMO100TT). RMO100TT is the only portable transformer resistance meter in the market with 100 A DC output current.The three independent channels enable testing of three windings in series. Consequently, a user can measure winding resistance in every tap position of an on-load tap changer without discharging between the tests.In addition to winding resistance measurement, a user can perform a detailed on-load tap changer analysis by analyzing recorded graphs (10 kHz sampling rate) and by measuring vibrations on an external tap changer tank.All RMO-TT instruments have a built-in tap changer control unit. Because of this, it is possible to remotely control on-load tap changer (OLTC) directly from the device. Also, a user can program DV-Win software 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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Voltage Transformer Testing System
KVTS
The Knopp Voltage Transformer Testing System is designed to measure the accuracy of instrument transformers having 120 volt secondaries and up to 14,400 volt primaries (special order for up to 36,000 volt primaries is available). The system includes a control console which contains the control circuitry, ANSI standard burdens, and the Knopp Automatic Transformer Comparator. The Knopp precision and loading transformer set is also included (as pictured) and is connected to the console via a special cable.
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Instrument Transformer Calibrators
MRL 22
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Automatic measure of contact resistance. True 4 terminal measurement. μP operated, automatically saves results.
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Time Interval Meter
Highly experienced in this industry, we are a well recognized manufacturer and exporter of Time Interval Meter. Supplied to electrical, power and engineering industry for instrument transformer and switchgear testing, this instrument is available to clients in different technical specifications. We use certified quality raw materials and components, procured from trusted vendor in market. We offer this Time Interval Meter (1 & 3 Channel) to clients at competitive price.
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High-Voltage Test Device
PGK 150 / 5 HB
BAUR Prüf- und Messtechnik GmbH
Cable testing and diagnostics with the BAUR PGK H. There are hardly any other longer-lasting, more robust and cost-effective testing devices than the two-piece high-voltage test devices from the PGK HB series. They generate continuous adjustable test voltages with mains frequency or optionally DC with positive or negative polarity. The display instruments for current and voltage, the safety control unit and the regulating transformer for the voltage are integrated in the operating unit.* Testing of medium- and high-voltage cables* DC voltage testing of up to 150 kV output voltage with positive or negative polarity* AC voltage testing - up to 110 kV for switchgear, busbars and insulating elements* Easy-to-maintain 2-piece design
