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- PJ Electronics, Inc.
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Digital High Frequency Surge Testers
C Model
These Digital High Frequency Surge Testers are the ultimate in ruggedness & durability. Fourteen / sixteen gauge steel construction and mobility on 6" heavy duty rubber wheels makes it a favorite for use in harsh industrial environments. The performance of PJ's exclusive/unique High Frequency Technology is capable of testing the integrity of any turn-to-turn insulation, including low inductance windings.
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Power Transformer
Transformer turn ratio meter is special designed for power transformer (single phase & three phases) and instrument transformer testing, suitable for testing in substation, transformer manufacturer, meter manufacturer. It helps to detect faulty transformer winding and tap changer position. It’s fully automatic device, can recognizes winding connection and vector group number of transformer winding. The user only need connect measuring cable and press start button and come out the test result.
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Brushless Motor
Citizen Chiba Precision Co., Ltd.
*High output *The rotor uses Nd magnets. *The stator was designed for maximum output per unit volume to maximize winding.*Long service life *Since these are brushless motors, the only limit to service life is how long the ball bearings last.
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Transformer Polarity Checker
865
This instrument is used to check the correctness of polarity markings on transformers. In operation, the two leads carrying the test current are connected to one of the transformer windings. The other two leads from the indicating meter are connected to the other winding.
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Insulation Tester, 250/400/1000V
61-795
*Checks new installation for damaged insulation*Checks existing installations and motor windings for breakdown in insulation*2-year warranty
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Voice Coils
CAES can tailor a motor for your specific application. This customization can include size variations and winding characteristics to accommodate power supply availability, performance parameters and physical mounting requirements.
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Dry Testing Transformer
GTB Series
Wuhan Sangao Electrical Test Installations Limit Co.
GTB series dry testing transformer is adopted with new technology of winding epoxy vacuum pouring and CD type Iron core. Compared with similar product of oil immersed type transformer, it is light weight, smaller size, insulation strength and moisture-resistant is more improved.
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Transformer Winding Resistance Meter
10A
*10A DC continuous current in 4 ranges of 0.01A, 0.1A, 1A and 10A.*4 ½ digit display for higher resolution.*Dual channel measurement.*Suitable for operation in energized switchyard conditions.*Specialized protection circuits for suppression of inductive voltage kickback.*SMPS based - lightweight and portable.
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Inductor Tester
Koyo Electronics Industries co., ltd
Especially designed for testing insulation of chip power inductor coil. Applicable to choke coils, motor coils, and coil with less winding, too.
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Current Transformer Analyzer
CT Analyzer
Current transformer testing in a multifunctional instrument performing excitation, ratio, polarity and winding resistance tests on current transformers as well as burden impedance measurement.
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Coil Tester
It is a new impulse winding tester that incorporates high precision, a wide range of functions, various expandability, improved operability, and a full range of external communication interfaces.
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Quasi Square Wave Constant Voltage Transformers
Osborne Quasi Square Wave Constant Voltage Transformers are used to regulate output voltages for applications that have varying input voltages. When used with a rectifier conversion circuit, these units provide an elegant design approach to voltage regulation. Osborne achieves this innovative approach by partnering the constant voltage transformer with an auxiliary resonant capacitor winding. The result is a unique (though time honored) technology that offers reliability, performance, and cost advantages over other styles of voltage regulation.
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High Voltage Surge Testers
HVST
The most important features of the surge tester are its ability to test the entire winding insulation system. A high voltage surge generates turn to turn, coil to coil, and phase to phase voltage stress, as well as ground insulation stress. When used as a dielectric test, accurate voltage readings are essential. The HV Surge Tester monitors the voltage directly across the winding under test. This voltage is displayed on an oscilloscope and recorded on the Pass/ Fail LED latch monitor. This voltage will be accurate despite the impedance of the winding being tested. The insulation system can be tested way above the operating voltage because of the brief duration of the applied voltage test pulse. This allows faults to be detected long before they become apparent at operating conditions.
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Insulation Tester
61-797
*Checks new installation for damaged insulation*Checks existing installations and motor windings for breakdown in insulation*2-year warranty
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Three-Phase Transformer Winding Resistance Meters
TWA Standard Series
When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilization criteria. This option makes the operator’s job significantly easier.Both models can output test currents from 5 mA to 25 A DC for the purpose of winding resistance measurement. TWA40D has a special test mode for checking the synchronization of on-load tap changers with three phases simultaneously tested in parallel, in which the total test current can rise to up to 40 A DC.TWA40D has additional advantages when it comes to non-intrusive tap changer analysis. The unique DVtest method 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, simultaneously with the measurement of tap changer motor current which helps with the detection of 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 on three phases simultaneously. It can also be performed as an additional test simultaneously with the winding resistance test in all tap positions.An additional unique advantage of TWA40D 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 shorten the total testing time – for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.The test leads for TWA three-phase transformer winding ohmmeters are interchangeable with the TRT turns ratio testers, which means that both sets of tests can be performed with a single test lead connection to the power transformer terminals.
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3 Phase Voltage Extension To Turns Ratio Meter
T-REX
The Raytech three phase voltage system option T-Rex is an optional system accessory for 3-Phase transformer ratio meter test sets designed by Raytech (i.e. TR-MARK III). T-Rex was designed to give Engineers and Test Technicians the ability to test the phase relationships and actual voltage ratios of transformer windings while applying three phase voltage.
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Surge Tester
Qingdao AIP Intelligent Instruments Co., Ltd
Surge tester able to test various coils, motor, stator winding, relay/contactor coil, electric magnetic valve coil etc. and can be applied for maintenance, production line, lab and QC etc. Extension: single surge test or multiple tests options.Large storage: up to 1000 test groups can be established.Automatic determine: manual or auto test mode options and test results would be determined automatically.Support both touch screen and numeric keyboard operating.Data analysis: data can be exported in CSV format by USB flash drive.Surge determine items: area, area difference, corona, and phase.100MHz sampling frequency.3KV and 5KV voltage options.Voltage closed loop feedback ensures test precision.User permission management.Support MES connection (manufacturing execution system).
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Micro-ohmmeters
MMR-650
Designed to measure very low resistances of both resistive and inductive types of objects, including amorphous core transformers. This product is made to be used in power plants, railways and maintenance companies, to measure welded and soldered connections, equipotential bondings, earthing conductors, contacts, bolted connections, windings of motors and power transformers and other resistive and inductive objects. MMR-650 can be also utilized on a production lines (eg. at the final production control stage). An innovative combination of a high-performance measuring device with a modern user interface and advanced data management system. Wireless data transmission, enhanced system of 2D codes and ability to print labels to identify test items, all contribute to bringing new quality of work and allow the user to perform a wide range of measurements.
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Fiber Optics
The Neoptix product line includes fiber optic temperature sensors for transformer windings temperature monitoring and for laboratory, industrial, and medical applications.
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COMPUTERIZED LCRTZ TEST SYSTEM (Automatic Transformer Test System)
CVCT-S20
Ideal for fast and fool proof testing of COILS AND SMALL TRANSFORMERS like SMPS transformers, Telecom transformers (HYBRID, POT CORE, RM-CORE), Pulse transformers etc. The systems scans at one stroke, all the windings of a transformer and tests as per definition of test procedure. The test procedure can be pre-programmed and stored under User friendly menu driven software . Any semi-skilled and unskilled person can be engaged for actual testing purpose. Can Select test frequency, pin number, parameters, test conditions, limits for each test. Test any pin to any other pin any defined parameter.Test Parameters :-> Inductance-> Capacitance-> AC Resistance, -> DC Resistance, -> Impedance, -> Leakage Inductance,-> Transformation Ratio & Winding PolaritySPECIFICATIONS :Measurement Frequencies : 50 Hz, 100 Hz, 500 Hz, 800 Hz; 1 KHz, 2 KHz, 5 KHz, 10 KHz. Measurement Voltage: 0.1 V – 1.0 V RMS adjustable under program control.
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Surge Testers
MTC 2
Advanced automatic high precision electrical winding testers for testing products like alternators, stators, transformers, armatures and motors. Available as static or portable units from 6-50 kV.
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Multiplexer For Transformer Testing
MUX-R
Raytech Multiplexer MUX R is designed to drastically reduce cabling time and increase test performance. It is made to be used with Raytech Winding Resistance and Turns Ratio Meters. Any MUX R configuration can be easily controlled by a Winding Resistance Meter touch panel or by remote.
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Automatic Three Phase Transformer Ratio Meter
ATRM PLUS
*Fully Automatic measurement.*Wide selection of Excitation Voltages of 10V, 40V, 100V, 230V & 250V from front panel.*4V Excitation voltage provided for CT measurements*Ratio range of up to 5000; direct display of measured ratio.*No conversions required.*Automatic Jumper selecting as per the vector*Diagram of Transformer.*Automatic testing of all 3 phases in 3 phase transformers*Without manual intervention.*Displays % deviation from a nominal ratio.*External storage facility using pen drive.*Internal storage up to 10000 readings.*Touch screen 7” Color TFT display with backlighting with*Resolution of 800 X 480.*Tap changer facility.*Computer interface using RS-232 or USB.*Windows Interface software provided for data transfer.*USB printer interface.*Four terminal measurements to reduce errors due to*Winding and lead resistance.*Auto print and storage facility.Fast measurements.
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DC Resistance Tester
GDZRS-20A
GDZRS series Winding DC resistance tester is optimal designed for measuring three phase winding DC resistance of big capacity transformer. It can test three phase winding DC resistances at the same time
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Motor Tester and Analyzer
ITIG
The iTIG III is the industry’s most advanced electric motor tester and winding analyzer. Bringing confidence to motor repair companies, industrial end users, OEMs, and manufacturers of rotating equipment, the iTIG III features over 20 high- and low-voltage tests including high frequency surge and partial discharge.Choose multiple tests to run automatically in a sequence or select single tests. Report results with the easiest to use instrument available. Manually operate voltage dial or set up for automatic operation. Carry the iTIG III in the field or use it as a benchtop device. Connect to an external portable power pack for testing up to 40kV. The iTIG III is the most versatile and easy-to-use tester available.
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Core Loss Testers
S30 and S30S Series
Stacks built with punched laminations can have a lot of quality issues. Even though the lamination material is tested in sheet format before any process, that alone is not sufficient to guarantee good quality stators. Wear and tear of the punch, bad welding, bad insulating coating in annealing add to the magnetic losses in the stator. It is always advisable to test the stator core in it's final format before winding to ensure good quality throughout the production batch.
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Digital Surge Tester
25KV, 30KV & 40KV
The Digital Surge Tester is designed specifically to test the coils and windings of High range AC Rotating machines ranging up to 13.8KV. The Surge Tester has an Embedded Industrial PC with 8 inch Touch screen Display and software to Store, Recall and Print the Test Reports.
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Transformer Winding Resistance Testers / TRT ? 2
TRT-2
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Fast measurement: Test current 0.02A to 2A DC, Digital display of resistance and test current.
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Dielectric Withstand Tester
Weshine Electric Manufacturing Co., Ltd
The induction withstand voltage test of transformers and transformers is an important test to ensure that the quality of transformers conforms to national standards. The longitudinal insulation induction withstand voltage test of the inter-turn, inter-layer, inter-section and inter-phase insulation of the transformer winding is an important item in the transformer insulation test.
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Motor Termination Units
Since the rise time of IGBTs are in the range of a few tens of nanoseconds (between 50ns-200ns), even short cables between PWM motor drives and motors cause voltage doubling at the motor terminals due to Travelling Wave Phenomenon as in transmission lines. The insulation of motor windings are prone to failure due to high voltage spikes if necessary precautions are not sufficiently taken. RC Type Output Filter Modules reduce these high voltage spikes to protect motors by connecting to stator terminals.
