Transformer Comparators
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Product
HDBaseT Transformers
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Pulse HDBaseT transformers are designed to provide common mode noise reduction for improved EMI performance and support power over HDBaseT (PoH) applications of up to 100W. The HDBaseT technology enables 5Play feature set, which includes ultra high definition 4K video, audio, 100BASE-TX Ethernet, various control signals, and up to 100W of power, on a single 100m/328ft CAT5e/6 cable.
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Cylinder Type Transformer Systems
YDTW\YDTCW Series
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Shanghai Jiu Zhi Electric Co., Ltd.
Conventional AC test transformers are especially designed for testing objects of medium capacitance. These systems are particularly suited for tests requiring stable voltage even if the load changes under voltage (corona, wet & pollution tests) or when the load is inductive (inductive voltage transformers).The possibility of stacking several of these transformer modules allows reaching very high voltage levels by keeping reasonable floor space.
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Signal Transformers
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Signal transformers are used as a step-up / step-down, isolating, or impedance matching component in electronic devices.
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Current Transformer
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A precision electrical device used to step down high alternating (AC) or direct (DC) primary currents into safe, measurable secondary values for power analysis, energy management, and monitoring instruments.
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Telecom Transformers
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Our high-performance telecom transformers support multiple home phone line and power line network applications. These transformers have excellent THD performance, small footprints, and are designed to exceed industry standards. Single, dual, quad, six, octal and twelve transformer numbers are available.
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Linear Variable Differential Transformers (LVDTs)
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Whilst there are several ways to measure displacement, the Linear Variable Differential Transformer (LVDT) remains a popular transducer in most industrial applications. LVDTs initially were used as a means of taking dimensional readings in laboratories. They gained popularity in a wide variety of industrial monitoring and control applications, and whilst an LVDT is used to measure displacement the technology can be employed within other transducer types.
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ANSI Metering Current Transformer Burden
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The ANSI Current transformer burden is designed for loading the current transformer during accuracy Tests. The ANSI burden is designed as per ANSI burden C57.13.It can be used along with the Eltel Automatic Instrument Transformer Test Set to test CTs as per ANSI Standards.
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Product
TRANSFORMER WINDING RESISTANCE METER
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International Biological Laboratories
This Test set is suitable to measure winding resistance of transformers, single or 3-phase, star or delta connected upto several MVA.Two independent displays read the resistance of both primary & secondary windings simultaneously. However, primary or secondary winding can also be measured separately.
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High Frequency Current Transformers
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Osborne High Frequency Current Transformers operate at frequencies higher than 50/60 Hertz. Their purpose is to reduce high frequency system currents to lower values that are appropriate for instrumentation and/or protection circuits. They have been designed to meet specified current ratios, and burden impedance at a specified transformation error. One area of unique Osborne expertise is in designing for phase shift when high frequency current transformers are to be used for power measuring applications.
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Transformer Oil Gas Analysis
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It is necessary to analyze outgas in transformer insulation oil in power plant facilities. Shimadzu offers a System GC compliant with ASTM D 3612 Method B (oil stripper sampling) or ASTM D 3612 Method C (headspace sampling). The Nexis GC-2030TOGAS3 system, equipped with a PDHID, enables the analysis of more trace amounts of permanent gas than conventional systems.
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Transformer Degaussing Analyzer
KRI6691
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The KRI6691 transformer degaussing analyzer injects current into the test winding by applying ±90V voltage, and collects the terminal voltage and winding current to draw the hysteresis characteristic curve. Linear quantitative analysis of transformer remanence can be performed, and rapid demagnetization can be achieved by tracking the hysteresis curve.
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Product
IC & Transformer
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Mornsun Guangzhou Science & Technology
MORNSUN launched the self-designed electronic integrated circuits according to the different product lines, types of the integrated circuit include AC/DC power supply control ICs, DC/DC power supply control ICs, interface ICs, start-up ICs, contactor power saving controller ICs and digital isolator ICs. MORNSUN IC chip can be widely used in industrial equipment, process control, data acquisition system, building automation, smart meter, etc. Adopting MORNSUN's AC/DC transformers and DC/DC transformers, with the use of its control ICs, can achieve wide voltage input flyback power supply design with multiple protection functions and superior EMI performance. We hope that those power transformers along with the integrated circuits & chips electronics can be an ideal fit for your application needs.
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Transformer Test System
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Transformer testing instrument, can be used as a stand-alone device and has the highest efficiency. Can be used in power transformers, network communication transformers, etc.
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Rectifier Transformers
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Osborne’s Rectifier Transformers are used in conjunction with various rectification configurations to convert AC input to DC output(s). Key characteristics include regulation, transformer utilization and AC ripple. Osborne rectifier transformer designs are often engineered to operate in advanced rectifier circuit applications.
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Transformers (Murata Power Solutions Products)
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Murata transformers are ideally suited to high-frequency designs. The products come in a variety of industry-standard packages and can be used in applications where impedance matching, voltage conversion, isolation and current sensing may be required.
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Distribution Transformer Test System
DTTS Series
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Shanghai Jiu Zhi Electric Co., Ltd.
The DTTS Series Distribution Transformer Test System are self-contained test sets incorporating all features necessary for testing single and three phase distribution transformer.
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Instrument Transformer Testing
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HAOMAI Electric Test Equipment Co., Ltd.
Testing for current and voltage/potential transformers to ensure reliable and accurate operation and avoid outages.
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Single-Phase Transformer Winding Resistance Meters
RMO-TT Series
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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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Three-Phase Transformer Winding Resistance Meters
TWA Standard Series
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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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Surface Comparators & Magnifier
127
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Designed for use with the Elcometer 127 illuminated magnifier, each surface comparator has a hole in the centre allowing for clear visual comparisons to be made.
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Flux Testing Transformer
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The testing equipment is manufactured in strict adherence with industry standards using superior quality raw materials, sourced from reputed vendor in market.
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Transformer Winding Resistance Meters
RMO TW Series
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The RMO-TW instrument can perform a simple, fast and reliable verification of a transformer on-load tap changer. This instrument allows measurements of a winding resistance at each tapping position of an on-load tap changer without discharging between tests. Problems with OLTC switching, such as interruption, can be detected with these measurements. The results are displayed on a backlit LCD screen.
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Current Transformer
CBT4
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SHANGHAI POWOO INDUSTRY CO., LTD
- Completely enclosed, good mechanical behavior, suitable for various environments, strong voltage isolation ability, delicate appearance; - more space in meter can be saved with combined current transformer in comparison to that of the same number of single form current transformers; - HLX-2 is used for 3-phase-3-wire circuits; HLX-3 is used for 3-phase-4-wire circuits;
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Product
Position Compare And Trigger Cards
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Position Synchronized Output, is determined by a specified position moving interval. Both fixed intervals and user-specified intervals are supported
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Voltage Transformer
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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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Transformer Insulation Testing
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The primary test methods used to assess the condition of the active insulation components in transformers and bushings, on site, include:1) power factor/tan δ,2) variable frequency power factor/tan δ (1 - 500 Hz)3) dielectric frequency response (DFR) [a dielectric response method], and4) moisture in oil measurements (for transformers).
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Product
Split Core Current Transformers
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Application:Watt Transducer, Current Transducer, KWH Meter, Demand Meter, Power Factor Meter, Current Sensing Relays, Energy Management SystemsContinuous Thermal: Rating 1.25 at 30° C, 1.0 at 55° C Standard 5-amp secondary. Others available.
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Product
ACP Portable Electrical Current Transformer Test,CT/PT Analyzer
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Chongqing Assen Power Equipment Co., Ltd
ACP portable Current transformer analyzer is mainly used for field or lab testing, it can finish the measurements (M) and protection (P) class CT, PT and TYP class CT. Adopt 7 inch touch TFT LCD, self-equipped mini type printer supporting field printing; supporting to use USB flash disk to dump data. The CT PT Analyzer is the most complete and easy-to-use testing system for protection and metering CTs according to IEEE and IEC standards.
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Transformer & Capacitor Testers
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*Quick and easy check for opens or shorts on transformers before energizing*Provides clear indications of open circuits, short connections and confirmation that the test results are OK*Tests overhead, pad-mount and other distribution transformers*Tests the primary and secondary sides of de‑energized transformers without disconnecting*Helps prevent line workers from installing a fuse on a shorted transformer*Automatic self-test feature*Magnet holds the tester in place while testing
