Transformer
transfers of electricity from one circuit to another by electro-magnetic induction.
See Also: Transformer Testers, Power Distribution, Coil
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400/5A CHEAP SPLIT CORE CAST RESIN CURRENT TRANSFORMER
LZCK310-10
Beijing GFUVE Electronics Co.,Ltd.
LZCK series outdoor waterproof current transformers are applicable for AC power system 35kV and measurement of current of power supply equipment below 10KV also can be used for microcomputer protection. This type of current transformer employs imported silicon steel which with high permeability as magnetic material, has the characteristics of Small magnetic circuit loss and can be split, its semicircular core and secondary windings employ high quality epoxy resin vacuum, casting in plastic-case(ABS or PC) which is flame retardance anti-moisture, stable performance, no maintenance.
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Automatic Transformer Test System
TH2840NX
Changzhou Tonghui Electronic Co., Ltd.
■ The test speed is as high as 1000 times/s (>10kHz), without relay action time ■ Test level up to 20Vrms ■ The bias voltage is built-in ±40V/±100mA/2A ■ Up to 288 test pins (only TH2840NX) ■ Industry-friendly user experience: Linux bottom layer, built-in help file
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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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Instrument Transformer Calibrators
CTPT 81
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Tests: Ratio error. Excitation current and curve. Polarity CT / PT TESTER
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Current Transformer with Open Core
TCP
Lifasa - International Capacitors, SA
The TCP series is designed for installations in operation. It has a removable core that allows its connection without interrupting the power supply.
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Step Up Transformer
MagD
SCOPE proudly introduces Step-Up Transformer - MagD, specially designed to cater the needs of testing of instrument Transformers. Before new systems are put into service or after any occurrence of fault, the instrument transformers need to be tested for their outputs. It is to be ensured that these instrument transformers are giving proper outputs to the protective relays. MagD is used to plot excitation curves for instrument transformers. Inbuilt voltmeter and ammeter, eliminates the need of external meters for plotting of curves. It can also be used for de-magnetization of transformer cores and also turns-ratio tests can be conducted using MagD.
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Wall Transformer, Converters & Chargers
PeakTech Prüf- und Messtechnik GmbH
An appliance for holding or inserting a charge of power.
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ACP Portable Electrical Current Transformer Test,CT/PT Analyzer
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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PD Free Test Transformer
Wuhan Fanke Transformer Manufacture Co., LTD
PD Free Test Transformer
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Mini Automatic Transformer Observation System
mini-ATOS
The mini-ATOS, is a professional multifunctional power transformer and substation diagnostic system. This compact and intelligent instrument can perform many routine and advanced tests such as Winding Resistance (WR), Dynamic Resistance Measurement (DRM), Turns Ratio (TR), Frequency Response of Stray Losses (FRSL), Magnetic Balance, and other diagnostic parameters. With the built-in fully automatic multiplexer, only a one-time connection is required for nearly all functions, which saves a considerable amount of time. The portable, rugged case is perfect for use anywhere onsite or in a laboratory. It is specially designed for fast and easy measurements with the well-known high precision and quality of all Raytech instruments.
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Test Equipment for Instrument Transformer
is desirable for measuring ratio errors and phase angles of low current (voltage) transformers used in electric devices, such as watt hour meters, smart meters, digital current meters, and transducers, etc.
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Current Transformer
ST-3RCT
Standard Electric Works Co., Ltd
● Primary Current Rating (Amp) : 20~300
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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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Current And Voltage Transformer Test Set
iCT1
iCT1 - CT/VT Test Set is the NEW and most advanced portable equipment capable to test current, voltage and combined transformers.With the low voltage method, known as "DC method", iCT1 is able to test Current Transformers with a very high saturation voltage, up to 30 kV, in a complete safety mode. Quick and easy to use tool, iCT1 allows to perform tests in one shot without changing the connection to the CT, thanks to the integrated 5-TAP Switchbox.
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Automatic Transformer Tester
SS3250 / SS3252 / SS3302
Automatic transformer test instrument is a precision test system, designed for transformer production line or incoming/outgoing inspection in quality control process, with high stability and high reliability. With the enhanced capability in turn ratio measurement, they can solve the measuring problems of low coupling coefficient, transformer's turn ratio and turn number with more precise measurement.
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Current Transformer Analyzer/Tester
GF1061
Beijing GFUVE Electronics Co.,Ltd.
Portable CT PT 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 download data or RS232 port to PC control. This model GF1061 CT PT analyzer is the most complete and easy-to-use testing system for protection and metering CTs according to IEEE C57.13 and IEC60044 & IEC61869 standards.
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Current Transformer Tester
CT-T1
The CT-T1 is a microprocessor-based Current Transformer Tester that measures CT excitation current, turns ratio, and winding polarity tests, all without having to switch the leads during testing. The instrument has a fully automatic knee point detection (ASA 10/50, IEEE 30°, IEEE 45°). Although includes 5 low side taps and 1 high side tap.
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Automatic Transformer Test System
TH2840AX
Changzhou Tonghui Electronic Co., Ltd.
■ The test speed is as high as 1000 times/s (>10kHz), without relay action time ■ Test level up to 20Vrms ■ The bias voltage is built-in ±40V/±100mA/2A ■ Up to 288 test pins (only TH2840NX) ■ Industry-friendly user experience: Linux bottom layer, built-in help file
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Differential Transformer Type Extensometers
DT Series
ISO Class 1 Compliant Differential Transformer Type Extensometers The ISO 6892-1 standard for tensile testing of metallic materials prescribes Class 1 or higher extensometers, and JIS Z2241 prescribes Class 2 or higher extensometers when measuring withstanding pressure. The DT series includes Class 1 compliant differential transformer type extensometers, which can be used to implement test methods compliant with metal tensile test standards.
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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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Split type AC Current Transformer
CTS-400
MULTI MEASURING INSTRUMENTS Co., Ltd.
*5A output for metering application.*Short circuit switch for secondary output is provided for safe operation.*High accurate transformer for the application of first class meter.*Easy to install by metal fitting.
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Transformer Insulation Testing
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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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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Transformer Loss Measuring Bridge
MLS 7100
The MLS 7100 transformer loss measuring bridge was especially designed to greatly simplify the determination of transformer core and copper losses – an ideal choice when working on site. The measuring bridge features open circuit as well as short circuit measuring. Many transformers can be directly connected to the MLS 7100 without needing further transducers.
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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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Transformer Monitoring
MTE offers a broad range of products and solutions for the online gas-in-oil monitoring of transformers (online DGA). With its individual and modular system components MTE provides the optimal customer oriented solution for utilities, industries and transformer manufacturers.
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Transformer Testing Instrument
The Motwane Manufacturing Company
Transformers are a vital link in the electrical distribution system. Accurate and timely transformer maintenance can prevent breakdowns by detecting potential causes, and eliminating them before danger strikes. In addition, regular maintenance ensures multiple years of trouble-free operation. Motwane offers a wide range of transformer maintenance products, such as the transformer turn ratio tester, winding resistance tester, automatic oil BDV tester, and oil tan delta resistivity tester.
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Transformer Winding Resistance Meters
Vanguard Instruments Company, Inc.
The TRM-40 is Vanguard Instruments’ third generation transformer winding resistance meter. The TRM-40 is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or any dc resistance of an inductive device.
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Automatic Transformer Comprehensive Test System
TH2837LX
Changzhou Tonghui Electronic Co., Ltd.
Automatic Transformer Comprehensive Test System
