Transformer Comparators
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Product
Series Precision Multi-Ratio Current Transformers
PMT25090
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Power Measurement Technologies Inc.
Precision two-stage toroidal current transformers find application as the reference in determining the accuracy of instrumentation current transformers.
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Product
AC Current Transformers
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CR Magnetics supplies an extensive line of toroidal current transformers for any need. Our offerings include measuring from 10,000 amps to a few milliamps. This includes ANSI, Commercial, Ground Fault, High Frequency, Wound Primary, DC Immune and Nano Alloy current transformers.
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Product
Transformer Polarity Checker
865
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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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Product
High Frequency Current Transformer
HFCT
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The HFCT is a high frequency current transformer designed specifically for picking up partial discharge signals. It has a split core ferrite to allow retrospective fitting to earth straps without the need for disconnection. The durable body has a hinge and a quick release latch, making use quick and easy. The HFCT is constructed with an aluminium body to provide RF shielding and improved performance in noisy environments.
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Product
Desktop Inspection/Measurement Systems VisionGauge Digital Optical Comparators
400 Series
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The 400 Series VisionGauge Digital Optical Comparator are state-of-the-art inspection and measurement systems in a compact desktop format. It''''''''s a compact desktop system that still provides a large working envelope. The 400 Series is a very cost-effective, full-featured system that has all of the advanced, patented VisionGauge software capabilities. This system is especially well suited for lower volume applications.Available in both Horizontal and Vertical Configurations. Patented VisionGauge CAD Auto-Align and CAD Auto-Pass/Fail tools provide fast, accurate and operator-independent results. 3 axis inspection and measurement system with manual stage movements
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Product
Transformer Winding Resistance Tester
KRI 9310
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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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Product
Pressure Comparator (System D)
P Series
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AMETEK Sensors, Test & Calibration
The P-Series (System D) comparators are hydraulic screw pumps designed for easy, controlled, high pressure generation. Each comparator includes a 4 connection manifold, which can be used for the reference indicator, the device under test, a fine adjust, an isolation valve, or a fluid reservoir. The adjustable reference pressure port lets you set your reference gauge at the best viewing angle. Three models are available for hydraulic oil, water, or both.
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Product
Variable Transformer DC Power Supplies
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Variable DC power supplies are AC to DC power supplies with a variable DC output. The output can be varied with a Variable Transformer (also known as variac). The Variable Transformer can be adjusted manually or with a motorized control. The AC input power can be single phase or three phases. With single phase AC input, the DC output ripple is very high (50%). With three phase AC input, the DC output ripple is low (5%). This would be a key benefit for selecting three phase AC input instead of single phase.
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Product
Transformers & Reactors
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Our company leads the market by manufacturing and exporting a wide range of Transformers & Reactors. We manufacture these equipments in different models and technical specifications to suit clients' demands. Our highly skilled team use best grade raw materials and components to manufacture these Transformers & Reactors. We offer these equipments to clients at competitive prices.
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Product
Current Transformers Test Set
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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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Product
Peripheral Level Transformer
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The Peripheral Level Transformer (PLT) is an adapter module that increases the voltage of the analog inputs&outputs for easy communication with external devices. It is connected between the instrument and the periphery.
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Product
Split type AC Current Transformer
CTF-400T
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MULTI MEASURING INSTRUMENTS Co., Ltd.
*1A output for metering application.*Wire stopper is equipped for the slipping protection.*The special connector is not necessary as the output terminals are provided.*Open circuit protection and nonflammable plastic material.
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Product
Test Set For Instrument Transformer
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This modern Test Set For Instrument Transformer is used for measuring relative errors of Instrument Voltage and Current Transformers. This is developed for reading out the unbalance of any bridge circuit. It also calculates the burden associated to the test sample. In addition to this, it further converts it to ratio and phase error values for presenting them on a LCD screen. With high-tech microprocessor controller, it ensures to provide quick and correct measurements.
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Product
Fully Automatic Transformer Oil Test Set
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1. Test as per International standards NMC insulating oil testers are fully automatic micro controller based system,completely self-contained,compact and portable giving smooth variable test voltage from 0 to 60, 80, or 100 kV for testing the dielectric strength of insulating oil in accordance with all international standards like IEC156/IS6792/ASTM D 1816/ASTM D877/ UNE 21 specifications.2. Auto mode NMC insulating oil testers are fully automatic type.1) IEC-156, IS6792, ASTM D 877, ASTM D 1816, UNE 21.2) Withstand Test A3) Withstand Test B4) 5 Minute Test5) User defined3. 100 Test results storage capacity NMC insulating oil testers has a storage capacity of 100 test results which can be recalled and printed.4. LCD display NMC insulating oil testers use LCD for easy readability of the BDV test results.5. Built in printer The printer used is a thermal paper print outs.The paper rolls can be easily installed by any person.6. User Friendly RS 232 Interface RS 232 interface is very easy to use to communicate stored data which can be saved in text format.7. Safety protection Safety interlocks are provided on the test chamber.Zero interlock protection to ensure operator safety.8. Accurate Performance The kit not only has all basic functions of an insulating oil tester but also has unique features that are seldom seen in similar products. For e.g. PROOF test A, PROOF test B, 5 Minntes test, LCD to display all test data.It ensures high work efficiency and reliability in any tough environment.
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Product
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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Product
Current Transformers
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The Institute of Electrical and Electronic Engineers defines a current transformer (IEEE Std C57.13) as “a transformer intended to reproduce in its secondary circuit, in a definite and known proportion, the current of its primary circuit with the phase relations substantially preserved”. Its primary winding is connected in series with the conductor carrying the current to be measured or to be controlled and its secondary winding is connected to the measuring, protection or control devices. Osborne designs and manufactures current transformers which are used for instrumentation applications, others which are used for power system synchronizing applications and others which are used in protection circuit application. They have been designed to meet specified current ratios, burden impedance and transformation errors.
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Product
32-Bit, 4-Ch Encoder/Counter With Preload Position Compare FIFO PCIE Card
PCIE-1884
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Four 32-bit programmable encoder countersQuadrature (X1, X2, X4), dual pulse (CW/CCW), signed pulse (OUT/DIR) modesProgrammable trigger output (preload FIFO) for position comparisonSingle-ended or differential inputsDigital filter with selectable values2,500 VDC isolation protection for all signals
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Product
48 Channel Threshold Comparator FPGA PXI Card
GX3748
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The GX3748 is a user configurable, FPGA-based, 3U PXI card which features 48 voltage comparator channels. The daughter board interfaces to the GX3700 FPGA baseboard which employs the Altera Stratix III FPGA. Each input channel can accept input voltage signals from 0 to 50 volts, with programmable threshold levels. Three of the 48 channels are supported by the board's timestamp event feature.
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Product
Transformer Test Equipment
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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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Product
Vibration Comparator
VC-2200/3200
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The VC-2200/3200 is a Vibration comparator which is used for maintenance and constant monitoring of production facilities with high accuracy, high function, and low cost in a single unit.
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Product
Split type AC Current Transformer
CTS-600
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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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Product
Software For Transformer Measuring Professional
T-Base Pro
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T-Base Pro is a new powerful software for electrical testing, developed by Raytech GmbH. Years of experience in building world-class testing equipment flowed into the development, resulting in a state-of-the-art software framework. Its functionality ranges from simple data import and export using a USB stick, to the full control of the sophisticated Raytech testing devices and measurement systems remotely.
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Product
Digital Transformer BDV Oil Test Set
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We are engaged in manufacturing, supplying and trading an exhaustive range of High Voltage Oil Test Set, which is developed under the constant supervision of our team of experts. This equipment is acknowledged for its optimality in performance and quality.
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Product
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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Product
Current Transformer Tester
HTCT-300
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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.
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Product
Power Transformer Monitoring
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Optimize the efficiency of your transformers by relying on our flagship DGA monitoring system with long-term stability, no maintenance needs, no false alarms and a revolutionary method for detecting ambient air ingress.
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Product
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
Series Precision Fixed-Ratio Current Transformers
PMT25100
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Power Measurement Technologies Inc.
Precision two-stage toroidal current transformers find application as the reference in determining the accuracy of instrumentation current transformers.
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Product
Comparators
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General-purpose comparators utilizing CMOS process suitable for low voltage, low power consumption, and fast response.
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Product
Current Transformer Tester
CT-T1
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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.
