Filter Results By:
Products
Applications
Manufacturers
Current Transformers
transfers accurately proportional levels of current to multiple circuits.
- Pickering Interfaces Inc.
product
PXI/PXIe Battery Simulator Module, 6-Channel, Simplified Current Sink, 750 V Isolation
41-752A-901
Targeting EV, automotive, aerospace, energy storage and electric aircraft applications, the new battery simulator modules occupy a single PXI slot. These 6-channel battery simulators are capable of supplying up to 7 V and 300 mA per channel. The channels are fully isolated from ground and from each other, allowing series connection to simulate batteries in a stacked architecture.
-
product
Split type AC Current Transformer
CTS-100
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.
-
product
Portable Analog Instruments
Instrument transformer is a general term for voltage transformers and current transformers that are used with electrical instruments. The main purpose of instrument transformers is to extend the measurement range for electrical quantities (voltage, current, power, power factor) on large-current and high-voltage circuits. They serve to convert currents and voltages to levels that are suitable for measurement, and to insulate the instrument, etc. from high-voltage circuitry.
-
product
Open Loop Current Sensor
C03 50A
The C03 offers efficient and precise sensor solutions for direct, alternating and pulsed currents in systems for industry and commerce as well as in communication systems. It consists of three main components: an accurate, linear Hall sensor with low temperature drift, a flux collector and a transformer. It is characterized by a very low resistance and thus lowers power loss and temperature drift - for optimal performance.
-
product
Test Equipment for Instrument Transformer
is desirable for measuring ratio errors and phase angles of low current (voltage) transformers used in electric devices, such as watt hour meters, smart meters, digital current meters, and transducers, etc.
-
-
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
DC Immune Current Transformer
DCT 108
Shanghai Powoo Industry Develop Group Limited
- Accurate DC measurement; comply to IEC 1036 and IEC 62053; - suitable for a wide range of current (from 1.5A to 100A); - linear output current, high precision; - compact, delicate appearance.
-
product
Transformer Tester
Kvtester Electronics Technology Co.,Ltd
High precision instrument for measuring characteristic parameters of transformer capacity, no-load and load. The instrument is a multi-function measuring instrument, which is equivalent to the usual two kinds of test instruments: the transformer capacity tester + transformer characteristic parameter tester. The utility model can precisely measure a series of power frequency parameters of a plurality of transformers, such as the capacity, the type, the no-load current, the no-load loss, the short circuit (load) loss and the impedance voltage.
-
product
Current Transformer
ST-3RCT
Standard Electric Works Co., Ltd
● Primary Current Rating (Amp) : 20~300
-
product
Zero Phase Current Transformer
MZL-30
MULTI MEASURING INSTRUMENTS Co., Ltd.
Split-core type for measuring zero phase current
-
product
Primary Current Injection Testers
Primary current injection tests are carried out during commissioning and certification of various types of switchgear and current transformers (CT), as well as during diagnostics of grounding circuits, testing circuit breakers and other devices. Primary current injection testers can also be used for determining the terminals polarity and transformation ratio of current transformers, thermal testing of electrical devices, testing automatic reclosers and sectional disconnectors.
-
product
Primary Test Equipment
LET-400-RD
It allows to perform with sufficient power, all the primary current injections to test the proper function and wiring of all the elements that compose the protection and measuring section in a substation.The regulation system is based on a continuously variable autotransformer (Variac) that supplies to a power transformer that delivers the high current outputs and isolate the main supply from the load. A built-in ammeter and a timer gives the information about the current value and the operation time of the relay or breaker under test.
-
product
Automatic Voltage Regulating Relay- Standard Model
NMC’s Microcontroller based Automatic Voltage Regulating Relays (AVR Relays) are latest technology based Relays used for regulating the secondary voltage of Power Transformers with On Load Tap Changer (OLTC). The Parameter settings are made through the front panel keys & are stored in NVRAM. Independent time delays can be set for first control pulse & subsequent pulses. Built-in Tap displays Tap number of Power Transformer. OLTC is blocked for UV, OV, OC, CF, Min/Max Tap Positions & Tap Fail . in manual mode, Tap Raise/Lower can be achieved through front keys. In TEST mode, Relays, Display and LED indications can be checked. A pair of contacts are available for Raise, Lower, UV, OV, Manual Mode, CF, TF & OC. There are two nos. of 5 Amps C.T.’s available, one for the Over Current blocking and L.D.C. & other for measuring the Current.
-
product
Transformer Turns Ratio Meter
TTRM 302
SCOPE introduces state of the art precision three phase Transformer Turns Ratio Meter (TTRM ) designed for field testing as well as factory testing of power transformers, instrument transformers and distribution transformers of all types. Along with turns ratio, this light weight and reliable instrument measures ratio deviation, phase angle deviation, magnetizing current and detects tap-position of single as well as three phase transformers in charged switchyard condition. The instrument has facility to automatically detect vector group of all majority configurations available. The differant AC voltage selection offers high accuracy in measurement.
-
product
Current Transformer Analyzer
CT Analyzer
Current transformer testing in a multifunctional instrument performing excitation, ratio, polarity and winding resistance tests on current transformers as well as burden impedance measurement.
-
product
Potential Transformers
Osborne Potential Transformers (PT’s) are used to reduce higher system voltages 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 potential transformers are to be used for power measuring applications.
-
product
Primary Current Injection Kits
During installation,testing,especially if the protective gear is connected to the power line via a current transformer it is advisable to use our Primary Injection Test Set. Keeping this in mind a wide range of Primary Current Injection Test Sets are being manufactured by "NMC”.
-
product
20Hz Injection Kit Monitoring System
Signals & Systems India Private Limited
The Display used to monitor the 20Hz and 50Hz current passing through NGT transformer. This could help to monitor the stator earth fault and could record the current every minute. The current shall be displayed in milliamps for both 20Hz and 50Hz. If an earth fault occurs in the generator star point, the 20 Hz voltage drives a current through the fault resistance. The current can be measured using clamp-on CT which would be clamped between load resistor and NGT. It gives an indication of the current values are lower or higher than the set threshold.
-
product
Current Transformer
ST-30RCT
Standard Electric Works Co., Ltd
● Primary Current Rating (Amp) : 1600~4000
-
product
High Voltage Transformers
We, NMC, are engaged in manufacturing AC/DC High Voltage Transformers ranging from 5kv upto 150Kv having current capacity from 10mA to 200mA AC/DC in Air cooled or Oil Cooled type as per the customer requirement.
-
product
Three-Phase Transformer Winding Resistance Meters
TWA Standard Series
When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilization criteria. This option makes the operator’s job significantly easier.Both models can output test currents from 5 mA to 25 A DC for the purpose of winding resistance measurement. TWA40D has a special test mode for checking the synchronization of on-load tap changers with three phases simultaneously tested in parallel, in which the total test current can rise to up to 40 A DC.TWA40D has additional advantages when it comes to non-intrusive tap changer analysis. The unique DVtest method 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, simultaneously with the measurement of tap changer motor current which helps with the detection of 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 on three phases simultaneously. It can also be performed as an additional test simultaneously with the winding resistance test in all tap positions.An additional unique advantage of TWA40D 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 shorten the total testing time – for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.The test leads for TWA three-phase transformer winding ohmmeters are interchangeable with the TRT turns ratio testers, which means that both sets of tests can be performed with a single test lead connection to the power transformer terminals.
-
product
CT/PT Bus-Bar Safety Protector
6450
The TESCO CT/PT Bus-Bar Safety Protector (Catalog No. 6450) has been developed to assist in the safe disconnect of a hot sequenced current transformer. After service is disconnected, the TESCO CT/PT Bus-Bar Safety Protector is slid over the bus-bar of the load side of the transformer and prevents accidental connection and/or arcing.
-
product
CT Burden Tester
585
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.
-
product
AC Resonant Test System
Yangzhou Power Electric Co., Ltd
Testing of certain apparatus requires much high voltage or current that a straight AC test system is not sufficient. Thus resonant test reactor with a variable core is needed. The main advantage of such test systems is lower input power and larger output power. The resonant test system is designed to compensate capacitance in the testing circuit precisely by tuning inductance of the test system. AC resonant test system is used for factory testing of middle, high and ultra-high voltage cables, capacitors, generators, motors, power transformers and gas-insulated switchgears.
-
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
Step & Contact Meter
HT2055
HT2055 consists in a power unit and a voltmetric unit, necessary for carrying out step and contact voltage measurements in industrial electric installations (TN systems, transformer cabinets) with a rated test current up to 50A.
-
product
Transformer Testers
*Quickly tests deenergized power distribution transformers*Briefly energizes the transformer and takes a snapshot of the condition by measuring the voltage, current and power factor of the test signal*Tests overhead, pad-mount and distribution transformers*Audible alarm confirms successful test*Improve SAIDI statistics by quickly testing and getting the transformer back in service*Auto self-test performed with every test*Compact, lightweight and easy-to-use
-
product
Transformer Turns Ratio Testers
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.
-
product
Transformers
RR Enterprises provides all type of transformersSingle Phase and Three Phase upto 100 KVA.The transformers can be→ Air Cooled→ Epoxy Cast→ Oil CooledWe provide transformers in high voltage and low voltage. These are used for various industrial and research purposes.→ High voltage transformers for corona and static elimination.→ High voltage transformers for plasma welding.→ Special purpose high voltage transformers.→ High current transformers for metalissing plants.→ Special purpose high current transformers.
-
product
Burn Down Transformer
ATG 6000
BAUR Prüf- und Messtechnik GmbH
Cable fault location with the BAUR ATG 6000. The high performance ATG 6000 burn down transformer is used for impedance reduction of cable faults in low- and medium-voltage networks. The short-circuit proof 5.75 kVA stray field transformer delivers a maximum voltage of 15 kV and is housed in a fully enclosed 19" housing.* Proven methodes for cable faults that are difficult to locate* Useful for cables that are difficult to access* Robust construction for reliable functions* Independent current and voltage control on each burning level
