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Voltage Transformer
a type of intrument transformer enabling secondary connected metering.
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Automatic Voltage Transformer Comparator
KATC-V2
Knopp’s KATC-V2 is a highly accurate state-of-the-art voltage transformer comparator that is compatible with all older generation Knopp comparators, and is designed to be a direct, plug-in replacement with additional test set cables to fit in the existing Knopp Voltage Transformer Test Systems.
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Standard Voltage Transformer
HJ / 635
Wuhan Huatian Electric Power Automation Co., Ltd.
It is mainly designed for the voltage transformer calibration standard of basic power supply and production department.
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Voltage Transformer Testing System
KVTS
The Knopp Voltage Transformer Testing System is designed to measure the accuracy of instrument transformers having 120 volt secondaries and up to 14,400 volt primaries (special order for up to 36,000 volt primaries is available). The system includes a control console which contains the control circuitry, ANSI standard burdens, and the Knopp Automatic Transformer Comparator. The Knopp precision and loading transformer set is also included (as pictured) and is connected to the console via a special cable.
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OIP TYPE VOLTAGE TRANSFORMER
12kV - 145kV post type voltage transformers having Oil Impregnated Paper( OIP) as major insulation has been designed with several unique features.OIP insulated outdoor products are subjected to extreme climatic conditions and hence extra care is taken in the design and manufacturing of such transformers.
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Uniload Voltage Transformer Test Set
2J6
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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Voltage Transformer
Beijing GFUVE Electronics Co.,Ltd.
Are a parallel-connected type of instrument transformer. They are designed to present a negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering.
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Epoxy Resin Silicon Rubber Outdoor Voltage Transformer
JDZW-10RG
Beijing GFUVE Electronics Co.,Ltd.
Outdoor voltage transformer of the type JDZW-10 is single phase and epoxy resin silicon rubber insulated product, it's used for metering electric energy, voltage control and relay protection in 50/60HZ rated voltage less than 12kV electric system. It can be used for medial voltage AIS, or can be used for medial voltage switchgears. They can operate in all kinds of environments (such as wide range temperature (-50~70℃), high altitude, high humidity, high pollution or salt). This model JDZW-10 outdoor voltage transformer is also as voltage source to supply 220V voltage.
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Turns Ratio Testers
TRT Advanced Series
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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3-Phase Ratiometer
PWR1-3B
The RATIOMETER PWR1-3B is constructed to measure the transformation ratio, phase error and magnetizing current of power- and distribution- transformers for all three-phases simultaneously. Voltage and current transformers are single phase, power transformers normally three-phase. Due to the bad quality on industrial lines (phase jitter and shifting, voltage differences between the three phases) all measurements normally are done single phase, even on three phase ratiometers.
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3 Phase Voltage Extension To Turns Ratio Meter Rack
T-REX R
The Raytech three phase voltage system option T-Rex R is an optional system accessory for 3- Phase transformer ratio meter test sets designed by Raytech (i.e. TR-MARK III R). T-Rex R 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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Baluns
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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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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Power Quality Analyzers
APQM-702/APQM-703
*It can be powered from the L phase.*It is intended for use in virtually all types of networks from 64 V to 760 V directly, with special consideration for measurements on low-voltage poles, due to its ease of connection.*It has an independent power supply and is therefore particularly suitable for measurements outside of voltage transformers. It can also be adapted for measurements on DC voltage systems.*Real-time remote configuration and data transfer (GPRS) using a built-in GSM modem
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Multifunction Substation Test Set
STS 4000
STS 4000 is a multifunction substation maintenance & commissioning test system for current, voltage and power transformers, designed to perform primary tests requested in substations commissioning. It allows to perform accurate tests on CTs, VTs, PTs and ground grid.
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HIPOT Insulation Testers
Crown high voltage, transformer type hipot insulation testers are safe, easy to use for quick, positive determination of grounds, shorts, and broken wires in motors, transformers and other low voltage equipment or wiring systems. A turn of the selector switch gives a selection of seven voltages; 500, 1080, 1250, 1500, 1750, 2000 or 2500 volts calibrated to +/- 5% accuracy; NEMA recommendation for insulation test is twice normal voltage plus 1000 volts. Since this instrument has a capacity of 2500 volts, it readily accommodates all normal requirements.
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Precision Multirange Voltage Transformers
WP-36000
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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Transformer Load Box
FY-H / 645
Wuhan Huatian Electric Power Automation Co., Ltd.
When testing current and voltage transformer, it provides various useful loads, which is an ideal matching product for various transformer verification devices.
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Transformer Ratio Meter
TRM 1000
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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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.
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Resonance Circuit for GIS Testing
CP RC
For HV testing OMICRON’s CPC 100 + CP RC are directly connected to the voltage transformer of the GIS, forming a resonance circuit. This reinforced “Power VT” is an integrated part of the GIS. So the need for draining and refilling any SF6 gas is eliminated. Acting as both the measuring and controlling device, the CPC 100 injects the required energy.
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CT-PT-CVT Measuring
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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High Quality Transformer Oil Dielectric Strength Tester
AS-023A
Chongqing Assen Power Equipment Co., Ltd
AS-023A Series High Quality Intelligent Transformer Oil Dielectric Strength Tester is specially designed for testing dielectric strength (Breakdown Voltage) of transformer oil. The breakdown voltage (dielectric strength) is one of the most important parameters of transformer oil, it is a rule of the voltage withstand. The value of breakdown voltage (dielectric strength) indicates whether the oil contains water, impurity and electric particles, and you’ll know the oil value via the breakdown voltage (dielectric strength).
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UHF PD Detector
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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Phasing Sticks
High voltage phasing rods enable phase comparisons to be made at the point of paralleling two circuits without the interposition of voltage transformers or secondary wiring circuits.
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Instrument Transformer
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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HV AC Voltage Test Systems
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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Voltage Transformer
PT2
Shanghai Powoo Industry Develop Group Limited
- completely enclosed, good mechanical behavior, suitable for various environments, strong voltage isolation ability, delicate appearance; - the lead wire has a pin format, which makes it easy to be fixed on a PCB; - the mechanical dimensions for this series of PTs are relatively small, hence can be used an electronic component; - good linearity, high precision, wide operating range; - ABS anti-combustion plastic casing; - encapsulated with epoxy resin to ensure strong insulation ability.
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Testing of Voltage Measuring Transformers
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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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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Control Transformers
ENTES control transformers ensure the safe operation of measuring devices with 24 VAC supply voltage for electical control panels. Input voltages of Control transformers are either fixed (230 or 400V) or selectable with taps (400;230+15-15).
