Current Transformers
transfers accurately proportional levels of current to multiple circuits.
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Product
Current Transformers
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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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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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Current Transformers & Bushings
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Measurements International Ltd.
AC Current Transformer, Reference Standard for the Calibration of Precision CTs, Currents as high as 10,000 A, Portable with carrying handle for smaller CTs, Wheels on heavier CTs, Passive or Electronically Aided Compensation.
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Current Transformers
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Supreme Instrument Laboratories
Portable Low Tension precision grade multi ratio Current Transformers, housed in laminated wooden cabinet, wound primary with suitable terminals on highly insulated bakelite panel upto 100 Amps. For higher ranges, a centre hole is provided for passing primary conductors for desired range.
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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
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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Current Transformers And Shunts
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Current transformers allow the different measuring devices to provide reliable and traceable data on the trends involving consumption and production processes in electrical installations. Especially designed to be installed quickly, easily and securely, meeting the most demanding expectations of today's market, covering a wide range of primary currents as well as multiple secondary outputs, both for AC and DC measurement.
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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
Standard Current Transformers
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Measurements International Ltd.
Single Range, Highest Permeability, Wide Measurement Range, Negligible Current Errors, High Accuracy.
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Product
Current Transformers
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Rishabh Instruments Pvt. Ltd.,
Rish Nano CT is a very reliable, efficient and robust current transformer for measurement of AC current. It provides 100 mA AC output. It can be used in Circuit breakers. Earth Leakage Protection.
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Product
Testing of Current Measuring Transformers
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All components from this category can be integrated into an existing current transformer test system. When selecting CT test components, both the type of converter to be tested and the required current are important.
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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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L.V. Current Transformers
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ENTES LV Current Transformers are measuring transformers which transform the primary current by a specified ratio to its secondary side with a phase difference of 0 degrees. They provide isolation of the relays and measuring devices from the HV side of the network.
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Product
Split Core Current Transformers
LZCK-55
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Beijing GFUVE Electronics Co.,Ltd.
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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High Current Transformers
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High Current Transformer is designed to elevate and check the temperature of the conductors at high current levels, in order to simulate the current loading conditions found in electrical circuits. High Current Transformer is designed as an open type transformer that uses the test object as its secondary coil or has 1 or 2-turn self secondary winding. The conductors cores' temperature depends on the short-circuit high current caused by the test object. According to the current going through the test object, the test temperature of the conductor will change. The loop temperature is measured by a thermocouple probe which is directly connected to conductor.
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Product
CT-PT-CVT Measuring
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Testing object: S current transformer, normal current transformer, voltage transformer● Testing item: ratio error, phase error, impedance, admittance of the transformer, etc● Rated current:5A,1A ( Customized )● Rated voltage: 100V, 100/√3V, 100/3V, 110V, 110/√3V, 110/3V, 120V, 120/√3V, 120/3V, 220V (or other)● Measurement range: ratio error measurement range : 0.0001%-19.99% phase error measurement range : 0.01 ' -900 '● Error minimum resolution:ratio error:0.0001%; phase error:0.01 ' ● Communication function : provide RS232 serial communication port● Measurement accuracy: ±1%● Consumed power: less than 20VA● Dimension :460×380×160 mm● Weight: 12kg
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Transformer Ratiometer
TR-1C
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Model TR-1C Transformer Ratiometer is a precision test set with an easy-to-read in-line digital readout from 0.00001 to 1.00000, suitable for testing all types of single and three-phase power distribution, potential and current transformers.
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Transformer Turns Ratio Testers
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Transformer turns ratio testers from TRT series are DV Power instruments mainly designed for the measurement of power transformer turns ratio. Also, they measure transformer excitation current and phase shift. Special tests, such as automatic vector group detection and magnetic balance, can be performed on three-phase transformers and three-phase autotransformers.All models, except TRT03 series, have a built-in true three-phase power source, which is necessary for testing turns ratio of transformers with special configurations, such as phase-shifting, rectifier, arc-furnace, traction transformers, etc.DV Power turns ratio testers can output various test voltages for different applications. From the extremely low test voltage of 1 V AC that enables turns ratio verification of the majority of current transformers, up to the highest test voltage of 500 V AC that provides the most accurate turns ratio testing of power transformers used in power generation and transmission. By using the external booster, test voltage increases up to 5 kV AC in order to successfully test capacitive voltage transformers.All DV Power turns ratio testers have a built-in tap changer control unit. Because of that, it is possible to control the on-load tap changer (OLTC) directly from the device. In order to make the most out of this feature, the instrument and included DV-Win software can be programmed to do everything automatically – running turns ratio tests, changing OLTC tap positions, and saving results. This option significantly facilitates and shortens the turns ratio testing time.TRT turns ratio testers use the same set of cables as three-phase winding ohmmeter & tap changer analyzers from the TWA series. Consequently, it enables one-time cable setup for performing eight tests:turns ratioexcitation currentphase anglemagnetic balancevector group detectionwinding resistanceon-load tap changer DVtestand demagnetization.
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Product
NI-9246, 50 kS/s/ch, 20 Arms, 30 Apk, 24-Bit, 3-Channel C Series Current Input Module
783920-01
Current Input Module
50 kS/s/ch, 20 Arms, 30 Apk, 24-Bit, 3-Channel C Series Current Input Module - The NI‑9246 is designed to support direct ring lug connectivity to the three-phase high-current measurements of 1 A and 5 A current transformers (CTs). It is optimized for power, energy, and industrial applications. The safety features, certifications, input ranges, overvoltage ranges, and connectivity are well suited for applications such as power quality monitoring and metering, utility pole-mounted smart switches, utility pole-mounted smart grid reclosers, substation merging units, industrial machine measurements, health monitoring, predictive maintenance and prognostics, and phasor measurement units (PMUs).
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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
Switch Box for CT Analyzer
CT SB2
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The CT SB2 switch box is an accessory for the CT Analyzer which allows automatic testing of multi-ratio current transformers. It is connected to all taps of the current transformer and to the CT Analyzer.
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Transformer Turns Ratio Tester
CX-BY
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Shenzhen Chuangxin Instruments Co., Ltd.
It is to test voltage ratio, vector, polarity, ratio error of current transformer and voltage transformer.
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Product
Current Transformer Tester
CTT
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The CTT is designed to test the current transformer ratio, Phase shift, Polarity, Excitation, Saturation, Winding resistance and Insulation resistance using the voltage method in compliance with ANSI/IEEE C57.13.1 and IEC 60044-1 standards, where voltage is applied to the secondary X terminals of the current transformer.
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Product
400/5A CHEAP SPLIT CORE CAST RESIN CURRENT TRANSFORMER
LZCK310-10
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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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High Frequency Current Transformer Clamps
HFCT-20HD & HFCT-60HD™
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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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Advanced Handheld Partial Discharge Detector
PDetector
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Power Monitoring and Diagnostic Technology Ltd.
The PDetector is an ideal device for On-Line Partial Discharge (OLPD) testing of MV and HV equipment which employs all 5 types of OLPD sensor technology: Ultra-High Frequency (UHF), Acoustic Emissions (AE), Ultrasonic, High Frequency Current Transformer (HFCT), and Transient Earth Voltage (TEV). The information from multiple sensors gives the PDetector the versatility to detect all types of PD in all types of substation apparatus. The exact type of PD activity can be determined effectively using multiple on-screen data spectrum analysis.
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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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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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Three-phase Electricity Meters
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Three-phase static electricity meters AMT B1x-S(D)xxTE are determined for single-rate or double-rate active energy measurement in direct and indirect connection, displaying results on mechanical register with stepping motor. In the case of CT (current transformer) operated meters (x/5A) it is necessary value of register to multiply by the current transformer ratio.
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Product
16-Channel VME AC Power Analysis Module
V180
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The V180 is a single-width VME module that allows accurate and comprehensive measurement of AC power circuits. The V180 acquires powerline current and voltage inputs using approved current transformers and model C750 remote potential transducers.
