Current Transformers
transfers accurately proportional levels of current to multiple circuits.
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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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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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Current Transformers
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A range of ring type current transformers suitable for primary currents from 1A-5000A with 1A or 5A secondaries. This standard range of measuring and protective current transformers is available as resin coated or tape wrapped.
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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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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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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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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
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Contrel Elettronica s.r.l. Company
We can supply current transformers (measure transformers, protection transformers and double ratio transformers, with analog output) with the following accuracy classes: 0.1, 0.2s, 0.5s; 1; 3. A wide range of combinations is available in our standard range with specific versions available upon request (other ratios, specific frequency, class or load). They are equipped with sealable terminal covers as standard.
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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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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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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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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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Split-Core Current Transformers
CTS Series
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Continental Control Systems LLC
The CTS series CTs are available with windows from 0.75 inch up to 2.0 inch. They have a removable section, so that they can be installed without interrupting the circuit. 0.333 Vac output at rated current Accuracy ±1% from 10% to 100% of rated current Phase angle <2° degrees at 50% of rated current (valid for 70 A or higher) 8 ft. twisted-pair wire, 600 Vac rated UL recognized for voltages up to 600 Vac, CE mark, RoHS
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Current Transformers
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National Meter Industries Inc.
Is an instrument transformer, used along with measuring or protective devices, in which the secondary current is proportional to the primary current (under normal conditions of operation) and differs from it by an angle that is approximately zero.
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Precision Multirange Current Transformer
P-5000
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The P-5000 transformer is a laboratory standard. The unit’s excellent accuracy and the Knopp One-to-One calibrating feature make this precision transformer well-suited as a standard for calibration work. This transformer can provide a very accurate determination of the ratio and phase angle characteristics of current instrument transformers having ratios from 5 to 5,000 amperes. This transformer also can accurately extend the range of a 5 ampere ammeter or wattmeter to cover all current values up to 5,000 amperes.
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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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CT Burden Tester
585
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The 585 Burden Tester is a hand held unit rated for use up to 20A. The design features a digital LED meter for displaying the current transformer (CT) secondary current. The burden is applied for a specific length of time controlled by circuitry inside the unit to help prevent the burnout of the burden elements.
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CT Analyzer
PCT200i
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PCT200 series CT test set (CT Analyzer) is a current transformer test equipment specially designed for current transformer characteristic test and with additional PT test functions for reference test. PCT200i owns more test items and higher technical parameters.
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Split type AC Current Transformer
CTS-200
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MULTI MEASURING INSTRUMENTS Co., Ltd.
*1A 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 installation by metal fitting.
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Power Calibrator And Protection Relay Test Set
CP11B
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Calmet Smart Calibration Devices
Single phase, class 0.02 and 0.05 power quality calibrator up to 120A and 560VAC with programmable power quality parameters. It makes possible to make automatic test of electricity meters, measurement transducers, current transformers and protection relays.
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NI-9247, 50 kS/s/ch, 50 Arms, 147 Apk, 24-Bit, 3-Channel C Series Current Input Module
783589-01
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50 kS/s/ch, 50 Arms, 147 Apk, 24-Bit, 3-Channel C Series Current Input Module - The NI‑9247 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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MCB Magnetic (Instantaneous) Trip Test Bench
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The test bench is specially built for low voltage- B, C & D curve MCBs. Specially designed custom built jigs are able to accommodate single, double, three and four pole MCBs. Decades of experience has helped us to design current source (transformer) in a special way such that good current regulation and high accuracy is ensured with a variable range without the use of any variable transformer in the system. The product is better than the competition with conventional technology at a lesser price!
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Current Transformer Analyzer/Tester
GF1061
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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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Instrument Transformer Comparator
PMT20010
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Power Measurement Technologies Inc.
The PMT20010 Comparator is an automatically balancing bridge that measures the accuracy of instrumentation potential and current transformers.
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CT/PT Test Set
PCT200Ai
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PCT200Ai is the CT/PT test set (current transformer analyzer) that can finish various current transformer test of different CT and plus reference testing functions of PT. Compared with PCT200i, its accuracy is higher.
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High Current DC Transformerd
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High Current DC Transformer provides very accurate DC current measurements up to 3000 A with output current that varies directly with the input current in three ranges. This direct current transformer is designed with an open window to pass a single cable, set of cables, or buss bar that carry the direct current to be measured.
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IEC Standard Burden Sets (Current)
IEC Burden Sets
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Testing and calibrating current transformers often requires standard burdens of reliable accuracy and stability, and burdens that are immune to stray fields and harmonics. These burden sets have been carefully designed to meet these requirements. They also provide the standard burdens required for the testing of current transformers for metering service, and for the testing (within the current rating provided by the sets) of current transformers for relaying applications, all as called for by IEC (International Electrotechnical Commission) Publication 185: 1987.
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Three Phase Power Calibrators And Tester Of Power Engineering Devices
C300B
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Calmet Smart Calibration Devices
Three phase, class 0.02 and 0.05 power quality calibrator up to 120A (360A) and 560VAC with programmable power quality parameters. It makes possible to make automatic test of electricity meters, measurement transducers, current transformers and protection relays.
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Split type AC Current Transformer
CTF-200T
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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.
