Current and Potential Transformers
current and potential transformer T&M instruments.
-
Product
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.
-
Product
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.
-
Product
Clamp type AC Current Sensor／for Power Monitor
ZCT-40P
-
MULTI MEASURING INSTRUMENTS Co., Ltd.
*AC 0.1A～500A*Current measurements of feeder
-
Product
Instrument Transformer
CT & PT Test Equipment
-
Measurements International Ltd.
Calibration of Voltage and Current Transformers from a Single Instrument, Calibration of Instrument Transformers with Different Rated Ratios Using One Single Reference Standard, Calibration of Voltage Transformers (VT) up to 800 kV When Used with MI 2500 Series of HV Dividers and Standard Capacitors, Calibration of Current Transformers (CT) Up to 10000 A When Used With MI 7020 and/or 7200 Series of Precision Current Transformers and/or Current Comparators, Test Frequency from 15 Hz to 100 Hz70.
-
Product
Multi Circuit Leakage Current Monitor
MCM-8000
-
MULTI MEASURING INSTRUMENTS Co., Ltd.
●The leakage current of max.8 circuits at the same time.●Easy for data management (storage by CSV formula)●Cost performance, high-speed sampling with high-frequency cut function.
-
Product
AC/DC Current Probe (1-Channel), 3 MHz, 50 UA
N2821A
Battery Probe
As modern battery-powered devices and integrated circuits become more green and energy efficient, there is a growing need to make high-sensitivity, low-level current measurements to ensure the current consumption of these devices is in acceptable limits. The N2821A high-sensitivity probe is engineered to make high-dynamic-range, high-sensitivity measurements to meet today’s challenging current measurement needs.
-
Product
Standard Round 2m Cables, Shielded, for Higher Current
ST010-S
-
Connection to digital boards, intended for higher currents. to be used with CPCI-1500, APCI-1500, APCI-1564, APCI-2032.
-
Product
Split type Pulse Current Sensor
CTF-03
-
MULTI MEASURING INSTRUMENTS Co., Ltd.
Suitable for the operation and cable continuity check of the equipment by pulse current detection method. Wide AC current range from 0.1mA to 8A. Ultra compact and light weight. High sensitivity and least affection from external magnetic field.
-
Product
Current Clamps and Transducers
-
High-accuracy Current Sensors and TransducersHigh-accuracy sensors for AC/DC current measurement and power analysis. From current clamps to high-precision zero flux current transducers and Rogowsky coils.
-
Product
High Frequency Transformers
-
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.
-
Product
High Speed-Large Current DC Electronic Load (CC/CV/CR/CP)
PLZ-4WL Series
-
While the PLZ-4WL series succeeds to the superior operability of our conventional model of the PLZ-4W series, the PLZ-4WL series realizes the high speed rise and fall time (slew rate of 50A/µs.) in the range of low voltage with large current. The PLZ-4WL offers six operation modes, and equips with various features such as sequence operation, switching operation, soft-start function, and time and voltage measurement. The PLZ-4WL applies not only for the conventional load test of the CPU power supply, but also it can be applied to even faster current response test. In addition, the PLZ-4WL is a space-saving design (about 50% less volume of the conventional model) that can save the facility space of the testing site, and it can be applied for the single cell testing of the large scale rechargeable battery.
-
Product
Clamp type AC Current Sensor／for Power Monitor
ZCT-33S
-
MULTI MEASURING INSTRUMENTS Co., Ltd.
*Ultra compact size*AC 0.1A～150A*Current measurements of feeder
-
Product
Transformer Demagnetization Tester
-
Weshine Electric Manufacturing Co., Ltd
After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores.
-
Product
High Current Conditioners
-
IsoTek’s unique Direct Coupled Design system offers extremely low impedance high current clean power for the hardest of loads.
-
Product
Eddy Current Chassis Dynamometers
-
Cradle- or single-roll (top-mount) dynamometers accommodating single- or tandem-axle vehicles, with continuous vehicle power ranges from 50 hp to 622 hp (37 kW to 464 kW), Taylor’s chassis dynamometers allow a top recommended speed of 90 mph (145 kph) at full load. Look to our experts to not only help you select your optimal system, but also to provide design, configuration, installation and training for a total solution that integrates seamlessly with your operation.
-
Product
Automatic Instrument Transformer Test Set
-
*ARM 9 processor controlled measurements*Measures total burden connected to test sample*Internal data storage facility upto 1 lakh readings*Digital display of test results on 800 x 480 TFT color display.*Latest IEC 61869 / ANSI C57.13-2008 / IS-2705 standards incorporated*VGA Port to interface with bigger display / monitor*Both Voltage & Current Transformer testing with one test set*5 and 1 Amp CT testing using either 5 or 1 Amp standard CT*Identifies ANSI, IEC, IS-P, IS-PR, BS, BS-S, IEC-S, IS, IS-S, AS, AS-M, AS-ME standards for CT & VT*USB memory storage*Available in three versions: AITTS Plus , ACTTS Plus & AVTTS Plus
-
Product
Wall Transformer, Converters & Chargers
-
PeakTech Prüf- und Messtechnik GmbH
An appliance for holding or inserting a charge of power.
-
Product
Manually Operated Transformer Oil Test Set
-
We offer Manually operated Transformer Oil Testing Kits to check the DI-electric strength of the insulating Oils as per relevant specifications via. IS 6972. It is a useful equipment for transformer / switchgear manufacturing units. Oil frittering agencies, repair shop and electrical maintenance departments.
-
Product
Extra-Ground Current Impuision Equipment
JYQ
-
Generally, the way of finding out the iron core ground false of powertransformer is always inefficient, while the method of using the traditional measure such as increase powerful current by welder when finding the false point oftransformer. The transformer needs to be mended on the spot or return to the factory if it can not melt off the point because of low voltage. It will spend high transportation fee and dealing costs, brings huge economic loss. The JYQ iron-coreimpulsionequipment is the intelligence set for exclusiveusing in solving the false of transformer. It can output high-voltage powerful current transientand melt the ground point off rapidly.
-
Product
Digital Eddy Current Displacement Sensor
ZET 7140-S
-
A digital eddy current sensor consists of a primary transducer (eddy current probe) and the ZET 7140-S measuring unit.
-
Product
Incremental Transformer Solutions
TRANSPORT X
-
The Kelman TRANSPORT X is a compact portable Dissolved Gas Analysis (DGA) system which can be used to analyze oil samples for all dissolved fault gases and moisture. If abnormal levels are detected, it further provides a diagnostic using various IEEE/IEC approved interpretation rules.
-
Product
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.
-
Product
Current Sense Magnetics
-
Current sense magnetics are used as a low loss method for sensing AC current in a circuit and also provide electrical and safety isolation between the source of the current and the measurement circuit. The key parameters for a current sense transformer are the rms current rating (to ensure it does not overheat in the application) and the safety and voltage isolation (to ensure it conforms to the end-application requirements).
-
Product
Clamp-On Type Earth Resistance Tester / Leakage Current Clampmeter
KM 1620 / KM 1720
-
Kusam Electrical Industries Limited
KM-1620 / KM 1720 single-jaw type Earth Resistance Tester is widely used for earth resistance testing of the equipments in the field of power, telecommunication, as well as the other electrical equipments. It features easy operation, high-accuracy and good adaptation of testing environment.
-
Product
Control Transformers
-
ENTES control transformers ensure the safe operation of measuring devices with 24 VAC supply voltage for electical control panels. Input voltages of Control transformers are either fixed (230 or 400V) or selectable with taps (400;230+15-15).
-
Product
30A, 100MHz High Sensitivity Current Probe
CP031A
-
Teledyne LeCroy current probes are available in a variety of models for a wide range of applications. The full range of Teledyne LeCroy current probes includes models with bandwidths up to 100 MHz, peak currents up to 700 A and sensitivities to 1 mA/div. Teledyne LeCroy current probes are often used in applications such as the design and test of switching power supplies, motor drives, electric vehicles, and uninterruptible power supplies.
-
Product
Fully Automatic Eddy Current Crack Test System
ROTO-SCAN
-
Foerster Instruments, Incorporated
The fully automatic crack test system ROTO-SCAN was specially developed for the testing of rings. The mechanical equipment has been developed for the gentlest possible handling of the test pieces and features a compact and low-maintenance design. The test probes seamlessly scan the inner and outer contours of the test pieces, thus ensuring 100 % testing of the rings.
-
Product
Current Probe
PA-629
-
*Maximum Current Value: +/- 200ADC, 140A RMS*1mA = 10mA, 100mA (switchable)*Rising Time: 1.2uS*Bandwidth: DC ~ 300kHz*Over Range Indicator*Battery, AC Power Supply Adaptor (free), dual usages
-
Product
Transformer Performance Tester
JYM
-
JYM insulation resistance tester is used for on-site insulation resistance measurement. The instrument has built-in positive and negative bipolar high-voltage power supplies, with large output power and strong load capacity. It is suitable for insulation resistance measurement of samples with large capacitance, such as power transformers and cables.
-
Product
Current
-
ACI’s comprehensive current sensor line includes transmitters, switches, and relays—and the technical support to solve the most challenging applications
