Filter Results By:
Products
Applications
Manufacturers
- Virginia Panel Corporation
product
Instrument Bracket Mounting Block Kit, For Use With Pickering PXI Chassis
310113542
Instrument brackets come with pre-drilled holes that can be used to mount different instrument chassis (from multiple vendors) to the bracket. In order to use these mounting holes with Pickering Chassis, this mounting block kit must be used.
-
product
VLF/DC Hipots
HVA28
The HVA28 is the smallest, lightest VLF/DC test instrument on the market. It is about as small as you can make it! Do not let its compact size lead you to believe this unit is lacking in power. The instrument can test up to 100,000ft/30kms of cable (at reduced voltage and frequency). In addition to cables, this unit can test vacuum bottles, transformers, motors / generators, cable sheath/shields, etc.
-
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
Three-Phase Transformer Winding Resistance Meters
TWA Advanced Series
TWA Advanced series is the latest DV Power solution for three-phase transformer winding resistance measurement and tap changer analysis. They are capable of testing six transformer windings with a single cable connection, as well as three-phase automatic transformer demagnetization. It has the option of the automated test mode, where the instrument operates the tap changer without operator input (minimizing the risk of human error) and records winding resistance results based on pre-selected stabilization criteria.The unique DVtest method of tap changer analysis 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, together with the measurement of tap changer motor current which detects 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 simultaneously on three phases. It can also be performed together with the winding resistance test in all tap positions.A unique advantage of TWA Advanced instruments 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 speed up the testing– for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.TWA500 is equipped with a large 10.1” graphical touch-screen display, while TWA400 has a 7” graphical touch-screen display. Besides making the interface much more user-friendly compared to older winding ohmmeters, it also enables certain test options that were previously available only with DV-Win software. The most important among them are DVtest, tap changer motor current measurement, “Heat Run” test, test templates, and automatic test mode.
-
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
Transformer Power Tester
HDFZ -III
HD Power Test Equipment Co.ltd
HDFZ-III Transformer Power Tester is an multi-function instrument which is used to test accurately a serious of parameters such as capacity, type, no-load current ,no-load loss, impedance voltage of various transformers. The test result of capacity and characteristic can be up to 100% accuracy rate. The capacity measurement range :10kVA~100000kVA。
-
product
ANSI Standard Burden Sets
Voltage and Current
Testing and calibrating instrument transformers often requires standard burdens of reliable accuracy and stability, and burdens that are immune to stray fields and harmonics. The burden sets described below have been carefully designed to meet these requirements.
-
product
Three-Phase Transformer Demagnetizer
DEM60C
After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores. The best way to eliminate this source of potential problems is to use demagnetizer on the power or instrument transformer.The DEM60C is a fully automatic test instrument which performs three-phase transformer demagnetization. Transformer magnetic core demagnetization requires the application of AC current with magnitude decreasing to zero. DEM60C provides this AC current by internally changing the polarity of a controlled DC current. During the demagnetization process, the instrument supplies the current at decreasing magnitude for each step, following a proprietary algorithm. It can demagnetize single-phase and three-phase power transformers.The instrument can be connected to all three phases of a power transformer to be demagnetized, on either the primary or the secondary side. If a user selects specific vector diagrams for different types of transformers, DEM60C will run a specific demagnetization procedure for each transformer type (i.e., single phase, delta, wye/star, zig-zag.) without switching the test leads.DEM60C enables safe and efficient power transformer demagnetization. The instrument automatically regulates the injection of current and discharging energy from the inductance. During and after the operation, an intrinsically safe discharge circuit with an indicator rapidly dissipates the stored magnetic energy. The discharging circuit is independent of the power supply, which improves its reliability in case of loss of power.Test currents of up to 60 A DC enable efficient demagnetization of even the largest power transformers. Using a DV Win software, it is possible to control DEM60C externally.
-
product
Transformer Winding Resistance Meters
TWA Standard Series
The TWA standard series instruments are designed to measure the resistance of six coils and simultaneously analyze the three-phase tap changer on load of the primary and secondary transformer coils (provided by model TWA40). This is done in a single cable configuration, with test currents up to 40A. Each transformer configuration has a special measurement algorithm that is optimized for rapid stabilization of test results. The TWA instruments generate a true DC current without ripple. Both current injection and magnetic circuit energy discharge are automatically regulated.
-
product
Instrument Transformer Test Systems
Our systems for testing voltage (VT) and current (CT) instrument transformers are conceived among other things for testing accuracy and insulation.
-
product
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.
-
product
Power Transformer Automatic Test Device
XD71
Hangzhou Xihu Electronic Institute
The device is used for power transformer power outage routine test items to do automated testing.Which is characterized by dielectric loss, insulation resistance, DC resistance, tap-changer switching characteristics, short circuit impedance and variable ratio of six test items are concentrated in an instrument,so that the instrument function, test power and test lead height fusion.Field test, just start wiring once, at the end of unplugging wiring once,the middle process by the test personnel in the computer terminal to send command control,the test system automatically completes all or part of the above test items.
-
product
Precision Multirange Current Transformer
P-5000
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.
-
product
High-Voltage Test Device
PGK 70 HB
BAUR Prüf- und Messtechnik GmbH
Cable testing and diagnostics with the BAUR PGK HB. There are hardly any other longer-lasting, more robust and cost-effective testing devices than the two-piece high-voltage test devices from the PGK HB series. They generate continuous adjustable test voltages with mains frequency or optionally DC with positive or negative polarity. The display instruments for current and voltage, the safety control unit and the regulating transformer for the voltage are integrated in the operating unit.* Testing of medium- and high-voltage cables* DC voltage testing of up to 70 kV output voltage with positive or negative polarity* AC voltage testing - up to 55 kV for switchgear, busbars and insulating elements* Easy-to-maintain 2-piece design
-
product
Test Sets For Diagnostic Testing
Test Sets For Diagnostic Testing are designed to test Oil Resistivity, Tan Delta, High Voltage Surge Comparison, etc. These test sets are automated instruments used to measure electrical features to insulate transformer oil, liquids and varied other insulating materials. They are ideal for revealing different localized problems and varied weak spots in the insulation. These modern testing sets are designed to provide high accuracy in results. In addition to this, they are easy to maintain testing sets available to ensure accurate readings.
-
product
Standard CT
6300A
The Model 2509 Instrument Current Transformer is a 6300 A ampere CT designed for precision measurement of AC current or for Instrument Current Transformer calibration applications. The CT can be installed on a bus bar or it can be used with a primary conductor consisting of number of turns. The 6300 CT is designed with a tapped primary & a tapped secondary winding, thus providing a large number of ratios over a range of 5 to 6300 amperes.
-
product
5 A portable digital micro-ohmmeter
MPK-254
The MPK-254 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1 mA up to 5 A.
-
product
Handheld Turns Ratio & Winding Resistance Tester
TWR-H Series
Handheld TWR-H device is DV Power single-phase instrument designed for measuring transformer winding resistance and turns ratio.The instrument has two output DC sources for measuring transformer winding resistance. The first DC source can output up to 2 A DC and is used for injecting current to the transformer’s high voltage winding. The second DC source can output up to 10 A DC and is used for testing the transformer’s low voltage winding. This is especially useful when measuring winding resistance of distribution transformers. These transformers have large turns ratio and therefore a big difference between resistances of high voltage and low voltage windings. Upon the winding resistance test, it is also possible to demagnetize the transformer core. The demagnetization process is completely automatic and safe.Together with the turns ratio, the instrument also measures excitation current and phase shift. This enables detecting transformer core or winding turns failures which cannot be spotted by measuring turns ratio only. The instrument can output test voltage up to 40 V AC for this test, but it can also output a very low test voltage of 1 V AC which is necessary for turns ratio verification of the majority of current transformers.TWR-H is powered by an internal Li-Ion battery. Up to 100 tests can be performed with a fully charged battery.
-
product
Step Up Transformer
MagD
SCOPE proudly introduces Step-Up Transformer - MagD, specially designed to cater the needs of testing of instrument Transformers. Before new systems are put into service or after any occurrence of fault, the instrument transformers need to be tested for their outputs. It is to be ensured that these instrument transformers are giving proper outputs to the protective relays. MagD is used to plot excitation curves for instrument transformers. Inbuilt voltmeter and ammeter, eliminates the need of external meters for plotting of curves. It can also be used for de-magnetization of transformer cores and also turns-ratio tests can be conducted using MagD.
-
product
Primary Current Injection Set
It is widely used in industries for instrument transformer and switchgear testing.
-
product
Primary Test Manager
The Primary Test Manager™ (PTM) software supports you during diagnostic testing, condition assessment and data management of medium- and high-voltage assets, such as circuit breakers, rotating machines, grounding systems, instrument and power transformers as well as bushings and on-load tap changers (OLTC).
-
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
Winding Resistance Meter
TRM 104
TRM104 is a portable winding resistance meter, designed to work in live EHV switchyards. Winding resistance values of large transformers up to 500 MVA and rotating machines are directly displayed. The meter is protected against the back emf offered by large inductive winding. A back-lit 4 line LCD with a user-friendly menu sets up the instrument for the test. Winding resistances and safety messages are also shown on this display. It is possible to measure the resistance of two windings simultaneously.The meter contains a special power source for rapid stabilization of test results.
-
product
Current Transformer Tester
CT-T1
The CT-T1 is a microprocessor-based Current Transformer Tester that measures CT excitation current, turns ratio, and winding polarity tests, all without having to switch the leads during testing. The instrument has a fully automatic knee point detection (ASA 10/50, IEEE 30°, IEEE 45°). Although includes 5 low side taps and 1 high side tap.
-
product
Transformer Winding Resistance Meters
RMO TT Series
The Tap Changer Analyzer & Winding Ohmmeter of the RMO-TT series is designed for winding resistance measurement of inductive objects, and for a tap changer analysis. The RMO-TT series is based on the state of the art technology, using the most advanced switch mode technology available today. The RMO-TT instruments are accurate (0,1%), powerful (up to 100 A) and still portable. The Instruments generate a true DC ripple free current with automatically regulated measurement and discharging circuit. RMO-TT instruments can perform a simple, quick and reliable transformer on-load tap changer condition assessment. This series of instruments enable measurements of a winding resistance in every tap position, current ripple values (percentage of a current drop during a tap change) and transition times during the tap changes. Problems with a connection, contacts, and selector/diverter switch operation (tap change with interruption) can be detected with these measurements.
-
product
Instrument Transformer Comparator
PMT20010
Power Measurement Technologies Inc.
The PMT20010 Comparator is an automatically balancing bridge that measures the accuracy of instrumentation potential and current transformers.
-
product
Time Interval Meter
Highly experienced in this industry, we are a well recognized manufacturer and exporter of Time Interval Meter. Supplied to electrical, power and engineering industry for instrument transformer and switchgear testing, this instrument is available to clients in different technical specifications. We use certified quality raw materials and components, procured from trusted vendor in market. We offer this Time Interval Meter (1 & 3 Channel) to clients at competitive price.
-
product
Combustible Gas Meter
921A
The Arbiter Systems®, Inc. Model 921A Combustible Gas Meter is a rugged, portable instrument that measures total combustible gases (TCG) in oil-filled transformer nitrogen gas blankets. TCG measurements have been shown to be good indicators of transformer health.
-
product
Instrument Transformer Calibrators
CTPT 81
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Tests: Ratio error. Excitation current and curve. Polarity CT / PT TESTER
-
product
LCZ LCR Meter
SS1061
LCZ Meters are a test system for passive components designed for the use in electronic inspection or production process for quality control. They meet any demanding requirement on production speed and precision, discrimination of qualified products from unqualified ones, as well as internal setup, storing and calling function for up to 10 instrument groups, so they are actually optimum test instruments for component incoming and production inspection. Like as: transformer, inductor, resistor, capacitor, relay, motor, generator, eletric valve, contactor,cable,wire,etc.
