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Current Transformers
transfers accurately proportional levels of current to multiple circuits.
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Current Transformers
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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High Current Transformers
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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Current Transformers
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
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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Auxiliary Current Transformers
Osborne Auxiliary Current Transformers are often used to reduce system currents to lower values appropriate for instrumentation and/or protection circuits. The Aux CT’s are designed for specific current ratios and burden impedance with a known transformation error. Osborne’s units are built for high performance and longevity in the most demanding environments.
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Split Core Current Transformers
LZCK-55
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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Standard Current Transformers
Measurements International Ltd.
Single Range, Highest Permeability, Wide Measurement Range, Negligible Current Errors, High Accuracy.
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Series Precision Multi-Ratio Current Transformers
PMT25090
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
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
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 & Bushings
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
CTS Series
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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High Frequency Current 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.
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Current Transformers
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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Standard Current Transformer
HL / 640
Wuhan Huatian Electric Power Automation Co., Ltd.
It is used as the calibration standard of current transformer in the error test of transformer.
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Split type AC Current Transformer
CTS-200
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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Digital ESU Analyzer
ESU-2050P
Calibration quality analyzer; uses external precision non-inductive test loads and wide band current transformer. The Pulsed Model is compatible with all continuous output generators (same as standard model), plus generators with pulsed output waveforms.
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Test Sets For Transformer Industries
Contemporary Test Sets For Transformer Industries are developed to recognize the potentially disastrous current transformer errors. They prevent the primary current from overpowering insulation and short circuits. They are used for developing a testing and maintenance plan for addressing the errors before any failure to save money and time. With these powerful test sets, they are sure to perform saturation testing to test the knee point of a signal by comparing primary and secondary windings.
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AC / DC Current Probe, 100 MHz, 30 Arms
N2783B
The N2783B 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 Bus Bar Type
BCT 4
Shanghai Powoo Industry Develop Group Limited
- Various mechanical dimensions, highly customer-tailored;- there are standard holes on the external casing for fixing with standard bolts; - linear output current, high precision; - small volume, light weight, easy for installation; - ABS anti-combustion plastic casing; - encapsulated with epoxy resin to ensure strong insulation ability;
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Acoustic Imager
Can be used for quick on-site testing of current transformers in metering installations. They are designed and manufactured to test transformers’ primary current, secondary current, and turns ratio and identifies phase type and polarity.
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Primary Current Injection Test Set
T 3000
T 3000 is a primary current injection testing system designed to perform primary tests requested in substations commissioning. It allows to perform different tests and measurements on current transformers, voltage transformers, power transformers, protection relays, energy meters and transducers
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CT PT Tester
HTCT-300 / 357
Wuhan Huatian Electric Power Automation Co., Ltd.
Measurement of current voltage transformer excitation characteristics, excitation parameters, turns ratio, polarity coil resistance, etc.
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High Current DC Transformerd
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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Series Precision Fixed-Ratio Current Transformers
PMT25100
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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Electric Transformer
Zhengzhou SMS Electric Co.,Ltd
For the convenience of the user or the low voltage metering box of electric energy metering, instrument with high precision (0.1)split core type current transformer.
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Current Transformer
ST-12RCT
Standard Electric Works Co., Ltd
● Primary Current Rating (Amp) : 800~2000
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Current Transformer
OutputDC 10VLinearityAs graph aboveApplied VoltageAC 2000V, 1min (between aperture and terminals)ImpendanceDC 500V, over 100M (between aperture and terminals)Fire Retardant Level94V0Output Terminals2.54 mm pinAnti-vibration50 Hz 5G
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ANSI Relaying Current Transformer Burden
The ANSI Current transformer burden is designed for loading the current transformer during accuracy Tests. The ANSI burden is designed as per ANSI burden C57.13.It can be used along with the Eltel Automatic Instrument Transformer Test Set to test CTs as per ANSI Standards.
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ANSI Metering Current Transformer Burden
The ANSI Current transformer burden is designed for loading the current transformer during accuracy Tests. The ANSI burden is designed as per ANSI burden C57.13.It can be used along with the Eltel Automatic Instrument Transformer Test Set to test CTs as per ANSI Standards.
