Current Transformers
transfers accurately proportional levels of current to multiple circuits.
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Current Transformers
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Ultra-precise electrical metrology devices designed to measure high AC and DC currents with exceptional accuracy in the parts-per-million (ppm) 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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Clamp Meters / Clamp Current Transformers
Multi-meter clamps
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Professional electrical testing tools and accessories used to measure AC or DC current safely without disconnecting the live wire.
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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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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
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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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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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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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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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Clamp Meters / Clamp Current Transformers
Clamp meter
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A professional-grade, contact-free electrical testing device used to measure alternating current (AC) and direct current (DC), voltage, power, and other electrical parameters safely by clipping around a conductor.
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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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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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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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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
Sensors
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The Current Transformer (CT) is the sensor which measures the amount of current draw from the wire it is installed on.
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5 Amp High Accuracy Current Probe
HA5
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Our HA5 Current Probe covers the measurement range from 20 milliamps to 5 amps, making it the best choice for measuring very small loads and the outputs of CT (Current Transformer) step-down circuits.
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N2782B AC / DC Current Probe, 50 MHz, 30 Arms
N2782B
High Current Probe
The N2782B current probe is an accurate and reliable solution for measuring AC and DC currents. Using a hybrid technology that includes a Hall effect sensor and an AC current transformer, the probe provides accurate measurement of DC or AC currents up to 30 Arms continuous.
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Current Transformer
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Nippen Electrical Instruments Co.
DIGITAL METERS NIPPEN electronic energy meters are panel mounting type innovative energy monitoring devices ,having state of the art electronic microcontroller circuitry for reliability and accuracy. They can be used for 1Ø / 3Ø balanced and unbalanced loads.
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Current Transformer
ST-100CT
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Standard Electric Works Co., Ltd
● 1000/5A - 3000/5A● 10-15V A● Class 1● Insulation 600V
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Current Transformer
ST-30CT
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Standard Electric Works Co., Ltd
● 30/5A - 150/5A● 2-3V A● Class 1● Insulation 600V
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Current Transformer
CT
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The split-core current transformers are easily installed with the snap on design.
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Current Transformer Loading Type
LCT 2
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SHANGHAI POWOO INDUSTRY CO., LTD
- suitable for a wide range of current (1.5A~120A); - there are standard holes on the primary lead wire; therefore, can be fixed at the terminal of the electricity meters with standard bolts, which makes it both firm and convenient; - the primary lead wire is highly customer-tailored with more than 300 specifications; - encapsulated with epoxy resin to ensure strong insulation ability; - linear output current, high precision; - AMB anti-combustion plastic casing.
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Surge Tester (Impulse Winding Tester)
SS6815 / SS6815F
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Surge testers (impulse winding tester) is used for testing and check the insulation grade of turns between turns, insulation grade of layers between layers, insulation grade of windings between turns. It is used widely for transformer, current sensor, voltage sensor, relay, contactor, inductor, motor, generator, valve coil, voice coil, etc.
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Test Switches and Accessories
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Test switches are designed and manufactured to allow quick and easy multi-circuit testing of switchboard relays, meters and instruments by any conventional system.These test switches and related test plugs have the features necessary for applications involving the measurement of individual currents and voltages associated with substation instrumentation and protection devices. They have been especially designed for the measurement of potential elements, current elements, and make-before-break short-circuit elements related to Current Transformer (CT) circuits.
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Split type AC Current Transformer
CTF-100T
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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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High Frequency Transformers
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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.
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Current Transformer Coil Type
CCT2
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SHANGHAI POWOO INDUSTRY CO., LTD
- suitable for small input current; - compact and delicate appearance; - linear output current, high precision; - small volume, light weight, easy to be fixed; - encapsulated with epoxy resin to ensure strong insulation ability; - ABS anti-combustion plastic casing.
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Split type AC Current Transformer
CTS-300
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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.





























