Voltage Transformer
a type of intrument transformer enabling secondary connected metering.
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H/L Voltage Clamp Meters
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High Voltage Current Transformation Ratio Tester breaks traditional structure, specially designed for high and low voltage first and secondary loop current, variable ratio, and current leakage test; apply the latest CT technology and mask digital integration technology, composed of special high-voltage clamp, low voltage clamp, host, high voltage insulation rod and monitoring software, etc; its wireless transmission test data can penetrate multiple building obstacles with a straight-line distance of 30 meters.
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Quasi Square Wave Constant Voltage Transformers
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Osborne Quasi Square Wave Constant Voltage Transformers are used to regulate output voltages for applications that have varying input voltages. When used with a rectifier conversion circuit, these units provide an elegant design approach to voltage regulation. Osborne achieves this innovative approach by partnering the constant voltage transformer with an auxiliary resonant capacitor winding. The result is a unique (though time honored) technology that offers reliability, performance, and cost advantages over other styles of voltage regulation.
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Testing of Voltage Measuring Transformers
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In this category you will find components for high-voltage testing as well as for testing electronic or conventional voltage measuring transformers.
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FTL Test Block
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FTL testblock with dust cover and current disconnect pinThe FTL is a test block for interfacing substation devices (protection relays, fault recorders, revenue meters, ... ) to the voltage and current transformers and to other equipment on the system side of a power grid. The FTL test block uses disconnect pins to isolate the substation devices from the system side equipment. Once isolated, secondary injection can be performed using banana jacks on the front side of the test block.
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Power Quality Analyzer
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Power quality analyzer is a product carefully developed by our company and specially designed for field test of three phases, multi-functional and intelligent, man-machine operation and concise and comprehensive test instrument. It is easy to use, large LCD screen display, high resolution, interface in both Chinese and English, shock-proof shell structure and so on. Can simultaneously measure the 4-channel current (ABC three phase and neutral wire current), 4-channel voltage (ABC three-phase voltage and neutral line voltage to ground), the peak value of current voltage, maximum/minimum value over a period, three-phase imbalance factor, short-time voltage flicker, transformer K factor, active power, reactive power, apparent power, power factor and displacement power factor, active power, reactive power, apparent power, total harmonic distortion and harmonic, etc; Display real-time waveform, harmonic ratio bar charts of current voltage; Dynamically capture instantaneous change of voltage current, monitoring starting current, monitoring the power parameters and generate the alarm list, generate the trend chart for a long time record test data.
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CT-PT-CVT Measuring
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Testing object: S current transformer, normal current transformer, voltage transformer● Testing item: ratio error, phase error, impedance, admittance of the transformer, etc● Rated current:5A,1A ( Customized )● Rated voltage: 100V, 100/√3V, 100/3V, 110V, 110/√3V, 110/3V, 120V, 120/√3V, 120/3V, 220V (or other)● Measurement range: ratio error measurement range : 0.0001%-19.99% phase error measurement range : 0.01 ' -900 '● Error minimum resolution:ratio error:0.0001%; phase error:0.01 ' ● Communication function : provide RS232 serial communication port● Measurement accuracy: ±1%● Consumed power: less than 20VA● Dimension :460×380×160 mm● Weight: 12kg
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AC HIGH VOLTAGE TEST SET
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International Biological Laboratories
IBL" make High voltage testing sets are suitable for Power frequency AC high voltage test on transformers, motors, insulators, cables etc. The sets are capable of giving continuously variable AC HIGH VOLTAGE from zero to maximum rated output voltage.
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High Voltage Transformer
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RR manufactures HIGH VOLTAGE TRANSFORMERS for various Industrial Applications.
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3 Phase Voltage Extension To Turns Ratio Meter
T-REX
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The Raytech three phase voltage system option T-Rex is an optional system accessory for 3-Phase transformer ratio meter test sets designed by Raytech (i.e. TR-MARK III). T-Rex was designed to give Engineers and Test Technicians the ability to test the phase relationships and actual voltage ratios of transformer windings while applying three phase voltage.
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HV AC Voltage Test Systems
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Fivestar HV Testing Equipment Co., Ltd.
FSHV offers three different types of AC voltage test systems, the conventional type is AC test transformer design, mainly for testing objects of medium & low capacitance products, particularly for tests requiring stable voltage even if the load changes under voltage (corona, wet & pollution tests) or when the load is inductive (like inductive voltage transformers). Another is AC resonant test systems, according to series resonance circuit XL=XC (2πfL=1/2πfC), by setting F frequency of power supply or L inductance of reactor, generate a pure sinusoidal waveform of the test voltage, and the required input power is only 1/Q. Variable frequency type operates in a frequency range from 20Hz to 300Hz, ideal for field commissioning test of power cables and GIS/GIL. Variable inductance type outputs continuous AC voltage of power frequency (50/60Hz), mainly for factory testing of high and ultra-high voltage cables, power transformers, GIS, etc.
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Precision Multirange Voltage Transformers
WP-36000
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The WP-36000 Transformer is primarily a laboratory standard. The high degree of accuracy and multiplicity of ranges makes this transformer the standard for precision calibration work. With the aid of this transformer, very accurate determination can be made of the ratio and phase angle characteristics of voltage transformers having ratings from 14,400 to 36,000 volts.
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Current And Voltage Transformer Test Set
iCT1
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iCT1 - CT/VT Test Set is the NEW and most advanced portable equipment capable to test current, voltage and combined transformers.With the low voltage method, known as "DC method", iCT1 is able to test Current Transformers with a very high saturation voltage, up to 30 kV, in a complete safety mode. Quick and easy to use tool, iCT1 allows to perform tests in one shot without changing the connection to the CT, thanks to the integrated 5-TAP Switchbox.
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Turns Ratio Testers
TRT Advanced Series
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TRT Advanced series is the newest DV Power solution for transformer turns ratio measurement. Besides its main application, each turns ratio tester from this series also measures transformer excitation current and phase shift. Furthermore, all models perform automatic vector group detection and magnetic balance on three-phase transformers and three-phase autotransformers. They have a built-in true three-phase power source. For that reason, they can test transformers with special configurations, such as phase-shifting, rectifier, arc-furnace, traction transformers, etc.The instruments can output test voltages from 1 V AC to 500 V AC, depending on the model. With the highest test voltage 500 V AC, TRT500 provides the most accurate turns ratio testing of power transformers used in power generation and transmission. The output test voltage of TRT500 can be boosted to 5 kV AC using the external CVT20 extension transformer. This application is specially designed for testing turns ratio of capacitive voltage transformers. The other three models, TRT400, TRT250, and TRT100 can output up to 400 V, 250 V, and 170 V respectively. The low test voltage of 1 V AC enables turns ratio verification of current transformers.TRT500 is equipped with a large 10.1” graphical touch screen display. Other models, (TRT400, TRT250, TRT100) have 7” graphical touch screen display. Besides making the interface much more user-friendly compared to older turns ratio testers, it also brings certain options that were previously available only with DV-Win software. The most important are test templates and automatic test mode. Users can simply create test templates, store them in the instrument’s memory, and load when in the field with just a few clicks.This turns ratio test set, as well as all other DV Power turns ratio testers, has a built-in tap changer control unit. It enables remote control of an on-load tap changer (OLTC) directly from the instrument. In order to make the most out of this feature, the instrument can be programmed to do everything automatically – running turns ratio tests, changing OLTC tap positions, and saving results. This option, especially in combination with test templates, significantly facilitates and shortens the turns ratio testing time. Automatic test mode minimizes human errors, which makes the measurement more reliable.
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UHF PD Detector
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Handheld online PD substation surveying system. The UHF PD Detector is the ideal tool for quick, non-invasive surveys in MV and HV substations and should be part of the toolkit for all maintenance and service teams. Due to its high measurement bandwidth, the UHF method provides accurate local online partial discharge (PD) measurements on HV components such as cable end-terminations, surge arrestors, voltage transformers and isolators.
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Turns Ratio Testing
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Weshine Electric Manufacturing Co., Ltd
1. Full three-phase sinusoidal inverter power output, output voltage is automatically adjusted, with soft start and soft stop functions, so the test speed is fast and the accuracy is high.2. The instrument has single-phase, three-phase, Z-type transformers, voltage transformer ratio, group, polarity test functions.
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Instrument Transformer
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Our company has achieved a reputed niche in international market by manufacturing and exporting a great range of Instrument Transformer. Widely used in electrical, power generation and engineering sector for transforming voltage or current level, this equipment is in accordance with industry standards. Manufactured using excellent grade raw materials sourced from reputed vendor, Instrument Transformer is offered to clients in different technical specifications. We stringently test this instrument on varied standard parameters.
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Transformer Ratio Meter
TRM 1000
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AJIT Transformer Ratio Meters are the most modern turn's radio meters widely used to test the turn's ratio of high voltage windings, to low voltage windings, of Transformer. These meters are accurate, compact & light in weight.
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Portable Analog Instruments
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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.
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Primary Current Injection Test Set
T 3000
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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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Power Quality Analyzer
PQM-700
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*power to the analyzer is supplied from tested mains (internal power supply) and is used in all types of networks from 64 V to 760 V, with particular emphasis on measurements at low voltage poles, due to the ease of connection,*has an independent power supply socket, especially suited for voltage measurements for transformers and DC circuits,built-in real-time clock.
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Uniload Voltage Transformer Test Set
2J6
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The Type 2J6 Knopp Uniload Voltage Transformer Test Set consists of three major parts: When the Knopp Precision Transformer in the 2J6 set is compensated for, and used with, a secondary burden of 15 volt-amperes, for example, the ratio of this precision transformer is well within 0.02% and the phase angle is well within 2 minutes. The transformer, in common with other Knopp Precision Multirange Transformers, is wound so that it has practically the same ratio and phase angle accuracy on all ranges.
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Baluns
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Causes a voltage transformation Uin / Uout = 1 / 2 and is designed for operation with hand- held field coil when performing tests.
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NI-9263, 100 kS/s/ch Simultaneous, ±10 V, 4-Channel C Series Voltage Output Module
779012-01
Voltage Output Module
100 kS/s/ch Simultaneous, ±10 V, 4-Channel C Series Voltage Output Module - The NI‑9263 is a simultaneously updating analog output module. It features overvoltage protection, short-circuit protection, low crosstalk, fast slew rate, high relative accuracy, and NIST‑traceable calibration. The NI‑9263 module includes a channel‑to‑earth ground double isolation barrier for safety and noise immunity.
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Product
DC-Powered, AC Voltage Monitor
VAD/VQD
Voltage Monitor
NAI’s VAD and VQD are DC-Powered, AC Voltage Monitors used to monitor voltage characteristics of single- or three-phase power lines. This allows normal operation of system loads when the power-line characteristics are within pre-determined limits. These voltage monitors are ideally suited for rugged defense and industrial applications.
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NI-9264, 25 kS/s/ch Simultaneous, ±10 V, 16-Channel C Series Voltage Output Module
785190-01
Voltage Output Module
25 kS/s/ch Simultaneous, ±10 V, 16-Channel C Series Voltage Output Module - The NI‑9264 is a simultaneously updating analog output module that accommodates higher‑channel‑count systems. Higher density modules conserve chassis space, which leaves room for other measurement types. Each channel has its own digital‑to‑analog converter. The spring-terminal version of the NI‑9264 uses a 36‑position connector for the output channels, and each channel has a ground connection.
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Product
NI-9242, 250 Vrms L-N, 400 Vrms L-L, 50 kS/s/ch, 24-Bit, 3-Phase C Series Voltage Input Module
783107-01
Voltage Input Module
250 Vrms L-N, 400 Vrms L-L, 50 kS/s/ch, 24-Bit, 3-Phase C Series Voltage Input Module - The NI‑9242 performs single-ended analog input. The wide measurement range makes it ideal for high-voltage measurement applications such as phasor measurements, power metering, power quality monitoring, standard potential transformers, and motor test. You can also perform transient and harmonic analysis with high-speed simultaneous sampling. The NI‑9242 offers three channels, so you can connect single‑ or three‑phase measurement configurations such as WYE and delta.
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NI-9220, ±10 V, 100 kS/s/ch, 16-Bit, Simultaneous Input, 16-Channel C Series Voltage Input Module
782615-02
Voltage Input Module
±10 V, 100 kS/s/ch, 16-Bit, Simultaneous Input, 16-Channel C Series Voltage Input Module - The NI‑9220 performs simultaneous differential analog inputs with 250 Vrms CAT II or 60 VDC CAT I isolation. The module is capable of generating 3.2 MB/s of data at the maximum sampling rate. There are two connector options for the NI‑9220: a 36-position spring-terminal connector and a 37‑position D‑SUB connector.
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NI-9221, ±60 V, 800 kS/s, 12-Bit, 8-Channel C Series Voltage Input Module
779014-01
Voltage Input Module
±60 V, 800 kS/s, 12-Bit, 8-Channel C Series Voltage Input Module - The NI‑9221 performs single-ended analog input. The wider voltage range makes this module well suited for industrial-level, automotive, or even smaller-cell battery measurements. There are two connector options for the NI‑9221: a 36‑position spring‑terminal connector and a 37-position D‑SUB connector.
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NI-9225, 300 Vrms, 50 kS/s/ch, 24-Bit, Simultaneous Input, 3-Channel C Series Voltage Input Module
780159-02
Voltage Input Module
300 Vrms, 50 kS/s/ch, 24-Bit, Simultaneous Input, 3-Channel C Series Voltage Input Module - The NI‑9225 performs differential analog input. The wide measurement range is well suited for high-voltage measurement applications such as power metering, power quality monitoring, motor test, battery stack testing, and fuel cell tests. You can perform transient and harmonic analysis with high-speed simultaneous sampling. In addition, you can prevent ground loops and add safety to a system with 600 Vrms channel‑to‑channel isolation between the three NI‑9225 channels.
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NI-9202, ±10 V, 10 kS/s, 24-Bit, 16-Channel C Series Voltage Input Module
784400-02
Voltage Input Module
±10 V, 10 kS/s, 24-Bit, 16-Channel C Series Voltage Input Module - The NI-9202 has excellent flexibility to meet the needs of your applications. The module has 16 simultaneous sampling, differential input channels to create large, distributed systems in a rugged form factor. It … also has configurable filters to eliminate noise in your system while maintaining low-latency to be used in control systems.
