Transformer Turns Ratio
measures a transformer's number of primary winding turns to it's secondary turns.
See Also: Winding, Transformer Turns Ratio Testers
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Transformer Test Equipment
KV Hipot Power Test Equipment Co.,Ltd
Transformer Test Equipment. Ensure that a transformer meets performance and reliability requirements, from the production line to after a repair or upgrade, when a major disruptive event occurs such as a lightning strike, or for preventive/predictive maintenance.
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Instrument Transformer Test Systems
Our systems for testing voltage (VT) and current (CT) instrument transformers are conceived among other things for testing accuracy and insulation.
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Split Core Current Transformer
Beijing GFUVE Electronics Co.,Ltd.
Have a "split" in the core that allows the CTs to open and be placed around the conductor without having to disconnect the conductor or disrupt the wiring.
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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-300
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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Distribution Transformer Tester
NDB-DOC-3™
The NDB-DOC-3™ is a test instrument designed for distribution networks transformers from 5kVA to 3MVA. It can determine the presence of short circuits or open circuits in the distribution transformer primary winding & also short circuits on the secondary winding.The NDB-DOC-3™ is designed to be operated without disconnecting the transformer’s secondary windings from their loads.
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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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Transformer Winding Resistance Tester
KRI 9310
KRI 9310 adopt Kelvin four-wire testing method, which effectively eliminates the influence of the resistance of the test line on the test results. It can be able to increases the current to 10A by which can test extremely low resistance to 0.01 Ω(such as amorphous alloy, Copper-nickel, nickel-chromium-iron, iron-chromium-aluminum etc). For the tested objects with high resistance value (CT/PT), the instrument can extend the range to 20 kΩ，so the wide resistance test range enables KRI9310 can cover 80% of the power transformer products on the market and switchgear bus-bar cable etc. The power of the tester use the built-in rechargeable lithium battery that can test hundreds of transformers by one time charging.
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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 Transformers Test Set
Supreme Instrument Laboratories
The basic unit is sensitive magnetic comparator and also it incorporates electronic null detector to facilitate the balance. The reference Current 5A. or IA. obtained from Standard Current Transformer and in comparison to that the vector length and phase displacement is measured. The ratio error in percentage and phase displacement in minutes are directly compared and indicated on dials.
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WINDING COIL TURNS TESTER
VE201R
Winding Turns Tester for Counting Measuring Number of Turns for Air Core Coils, Bobbin Coils or Solenoid Coils. Can Measure : Turns along with Winding Polarity and DC Resistance.Turns Measurement : 1 Turns to 80,000 Turns
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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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Relaying Current Transformer Analyser
*Measures Ratio, Excitation Characteristics, Polarity, Winding Resistance, Remanance, and Insulation Resistance of secondary winding. * Determines Composite Error. * Used to test un-mounted CTs or CTs that are mounted but isolated inside the power system equipment. * Conducts a whole series of tests automatically, thus speeding up the time to commission CTs and relaying systems. * Battery powered test set - light weight & fully portable. * Provides a graphical presentation of the CT excitation characteristics. * Determines the IEC 10/50 knee point and the point of maximum permeability, ANSI 45 degree Slope Point. * Detects shorted turns or insulation problems within the test CT, thus avoiding commissioning of faulty equipment.
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Vertical Space Transformers
ST
The Space Transformer (ST) is an integral part of the probe card, utilized between the probe head and the PCB. Nidec SV Probe provides a wide variety of space transformation options including: • WST™ (Wired Space Transformer) • MST™ (Modular Space Transformer) • MLC (Multi-Layer Ceramic) • MLO/Mini-PCB (Multi-Layered Organic) • Multi-Site MLO Reflow of Package Substrate • MLC with MLTF to 50µm PitchOne of the main priorities for Nidec SV Probe is the internal development and manufacture of our own probe card components. We now offer in-house manufactured space transformer technologies with shorter lead time and competitive pricing. Contact your sales representative to learn more about our internally manufactured STs or any of our other ST technologies.
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Transformer Bench Tester
KVBT
KV Hipot Power Test Equipment Co.,Ltd
Transformer Test System is applied for ex-work and maintenance detecting on various transformers.
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Hand Held Microwave Moisture MeterFor Water/Cement Ratios of Fresh Concrete
Cementometer
The James Cementometer represents a break-through in modern moisture measurement technology. By utilizing the latest microwave and microprocessor science, the Cementometer can determine the moisture content of freshly mixed cement, concrete, and mortar. Simply insert the prongs of the probe into the material to be measured and instantaneously the water cement ratio is shown on the easy to read display.
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Multi Mount Transformer
UET101
UEi Test & Measurement Instruments
Multi Mount Control and Ringer transformer.
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Instrument Transformer Testing
Weshine Electric Manufacturing Co., Ltd
Your product description goes here.
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Single Gas Transformer DGA
Hydran composite gas Dissolved Gas Analysis (DGA) products provide essential online monitoring of transformer oil. The Hydran line is the perfect cost-effective application for small- and medium-sized transformers where customers need to know about developing fault conditions that could cause unscheduled outages.The Hydran products allow for the addition of expansion to the base unit, allowing for greater measurement accuracy
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High Frequency Current Transformer Clamps
HFCT-20HD & HFCT-60HD™
The HFCT-20HD™ and HFCT-60HD™ are high frequency current transformer sensors designed for partial discharge detection on electric apparatus’ ground returns. Made from superior quality materials, it is designed for any environment.
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200KHz AUTOMATIC TRANSFORMER TEST SYSTEM
VE2729XAU
Its a Microprocessor Based 200KHz Automatic Transformer Tester with inbuilt 20 Pin Channel Scanner for Automatic Switching and Testing Coils & Transformers (Ferrite) with Max. 20 PINS. Test Parameters : -> Inductance (L)-> Leakage Inductance (Lk)-> Capacitance (C)-> DC Resistance (Rdc)-> AC Resistance (Rac)-> Turns Ratio with Winding Polaity-> Quality Factor (Q)-> Impedance (Z)
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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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Polarization Extinction Ratio Measurement
Rapid & Accurate measurement for PER, Angle, and Power. The most suitable light source for PER measurement.
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Standard Voltage Transformer
HJ / 635
Wuhan Huatian Electric Power Automation Co., Ltd.
It is mainly designed for the voltage transformer calibration standard of basic power supply and production department.
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Current Transformer
ST-40CT
Standard Electric Works Co., Ltd
● 200/5A - 400/5A● 3-5V A● Class 1● Insulation 600V
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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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Current Transformers
Excellent measurement technology requires high-quality current transformers. The product portfolio comprises a wide range of current transformers for load currents (operating currents) and residual currents (RCM). Different designs cover a variety of installation situations and metrological requirements, and enable retrofitting. AC/DC sensitive measuring current transformers use a special measurement method to detect both AC and DC currents of different frequencies.
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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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Current Transformer Tester
HTCT-300
Full-featured, can not only satisfy various CT (eg: protection, measurement and TP category) but also PT type electromagnetic unit for its excitation characteristics (ie voltage current characteristics), ratio, polarity, secondary winding resistance, secondary load, ratio deviation, angle deviation and other test requirements.
