High Voltage Transformers
See Also: Substation
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Fully Automatic Transformer Winding Resistance Tester
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Measure DC resistance of transformers windings etc. Introduction: The NMC ''TDR'' is a high precision, new generation, light weight large output current and micro-processor controlled tester. This replaces old DC wheat stone bridge and double arm bridge for measurement of DC resistance. ''TDR'' adopts new advanced test current power supply technology, four terminal measurement, digital display of resistance value and test current. ''TDR'' is powered by 220V AC mains single phase supply. The measurements are accurate as the test current is highly stable. High automation is achieved with automatic discharge warning.Principle: The constant current generated is fed to the resistance under test through the current terminals and the voltage drop across the resistance under test is measured and displayed in ohms. A true four terminal measurement is used to eliminate the need for lead resistance compensation.
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Additional Products: High Voltage 50 Pin D-Type Connectors
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The connectors below are not compatible with Pickering products, however, are offered for developing a connection solution for use with other products.
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Voltage, Current and Power Measurement
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Educated Design & Development, Inc.
For measuring current, especially higher currents and quicker than series ammeters. These units are considered the finest available. All units are extremely rugged, reliable, and versatile.
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Single-Phase Transformer Winding Resistance Meters
RMO-TW Series
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RMO-TW series is perfect for winding resistance measurements of inductive objects. It is ideal for testing transformer windings (power transformers, distribution, autotransformers) and for on-load tap changer verification. In addition, any RMO-TW transformer ohmmeter & tap changer analyzer can also perform transformer demagnetization.The series contains 4 models, with maximal test currents from 10 A (RMO10TW) to 50 A (RMO50TW). They are fitted in a portable and lightweight metal housing.All transformer ohmmeters from RMO-TW series generate a true DC ripple-free current with automatically regulated measurement and discharging circuit. The injection of current and discharge of energy from the test object are automatically regulated.Three independent channels enable testing of three windings in series. Consequently, this enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.DV-Win software enables control and observation of the test process, as well as saving and analyzing the results on a PC. It provides a test report, arranged in a selectable form as an Excel spreadsheet, PDF, Word, or ASCII format. Additionally, DV-Win measures and calculates the OLTC transition time, the ripple and the winding resistance for each tap changing operation. The software can also perform the calculations necessary for the “Heat Run” test. Finally, a user can export all results in the form of a report.
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SPD High, Medium, and Low Voltage TOV Test Equipment
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Shanghai Guantu Technology Co., Ltd.
The high (medium) voltage TOV tester is used for transient overvoltage tests caused by faults in high and medium voltage systems such as surge protectors (SPDs), and can also be used for other scientific research tests.standardGB/T 16927-1997 High voltage test technology.GB18802.1-2011 Surge protective device (SPD) for low-voltage power distribution system Part: Performance requirements and test methods.IEC61643-1:2005 (Surge protective devices connected to low-voltage power distribution systems part 1: Performance requirements and testing methods)TOV fault test equipment1. Three-phase isolation test transformer2. Single-phase test transformer3. Low voltage switchgear4. Power controller5. Test voltage and current measurement6. Sample box
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PXIe High Voltage Programmable Resistor Module, REDEL Connector
42-230-216-HI
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The 40-230-216-HI (PXI) and 42-230-216-HI (PXIe) are programmable resistor modules with 4 channels which can be set between 2.5Ω and 1.8kΩ with 8Ω resolution with maximum voltage of 1.2kV. The 40/42-230 range provides a simple solution for applications requiring voltage handling up to 1kV (9-pin D-type connector) or 1.2kV (22-pin REDEL connector).
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PXIe High Voltage Programmable Resistor Module, D-Type Connector
42-230-153-HI
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The 40-230-153-HI (PXI) and 42-230-153-HI (PXIe) are programmable resistor modules with 1 channel which can be set between 4.5Ω and 11.32MΩ with 1Ω resolution with maximum voltage of 1kV. The 40/42-230 range provides a simple solution for applications requiring voltage handling up to 1kV (9-pin D-type connector) or 1.2kV (22-pin REDEL connector).
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Voltage Controlled Oscillator Assembly With Heater
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Teledyne RF & Microwave has designed a Voltage Controlled Oscillator to replace an existing application. The oscillator covers the 520 to 560 MHz frequency range. The oscillator provides +10 to +13 dBm output power. The oscillator has internal heaters designed to maintain the oscillator assembly at constant temperature. The unit operates over the 0° to 60° C temperature range with ~200 KHz frequency variation due to temperature variation.
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1kV, 25 MHz High Voltage Differential Probe Without Tip Accessories and with Auto Zero Disconnect
HVD3102A-NOACC
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The HVD3000A series of high voltage differential probes cover the fullest range of applications, from 120/240 V switch-mode power supplies through 600 V class and 5 kV electrical apparatus. The table below provides a list of recommended probe models based on specific device under test applications.
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High Voltage Tester
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Aarohi Embedded Systems Pvt. Ltd
AAROHI make high voltage tester is specially designed to test induction & submersible motors with cutting edge technology.High Voltage Tester is manufactured as per the International set standards and regulations. This High Voltage Testers are available in AC and DC types and are used for testing HV cables after installation and repair for ensuring efficient performance. It also indicates voltage withstands level and current leakage level of the cable during the testing period.
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Portable Three Phase Transformer
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Supreme Instrument Laboratories
Portable 3 phase double wound transformers both step-up & step-down, natural air cooled construction, housed in well ventilated sheet steel cabinet duly powder coated. All the input and output terminals are brought out and terminated on highly insulated bakelite panels duly marked for easy connection. Necessary carrying handles and castor wheel will be provided for portability.
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High Voltage Measurement
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High Voltage Pulse Attenuator is used to attenuate high voltage pulse signals in a 50 system. It is consist of highly surge robust components with great voltage linearity. The device is symmetrical, Input and output can be exchanged.
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Voltage logger0 to 2.5V
TK-4703
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Supplied with an input cable, this logger can measure voltages up to 2.5V DC and can be connected to many industry standard devices, such as CO2 sensors and current clamps, enabling the logging of a wide range of process parameters.The unit is particularly useful when space is at a premium.
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VLF Voltage Generators
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Fivestar HV Testing Equipment Co., Ltd.
VLF hipot is an AC output tester with an output frequency of 0.1 Hz or lower rather than 50/60 Hz. Although the frequency is very low, it is an alternating current with polarity reversals every half cycle.
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Voltage Variable Attenuators
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Voltage variable attenuators (VVAs) that offer up to 60 dB of attenuation across a broad range of frequencies from 400 MHz to 18 GHz. These voltage variable attenuators are frequently used in applications such as electronic warfare, instrumentation, point-to-point and point-to-multipoint radios, fiber optic and broadband telecom, microwave radio and VSAT, military radios, radar, ECM, SATCOM and sensors, and R&D.
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PXI High Voltage Power Multiplexer, Dual 12:1
40-331A-002
Multiplexer Module
The 40-331A-002 dual 12:1 MUX is part of our range of 40-331A/332 High Voltage Power Multiplexer and Matrix Modules and is suitable for applications requiring high voltage power relay switching with high density. They feature current handling up to 5A, 1000VDC/1000VAC peak cold switching and 110VDC/250VAC hot switching.
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PXI/PXIe High Voltage Multiplexer, Dual 11-Channel, 2-Pole
42-321-125-HI
Multiplexer Module
The 40-321-125-HI (PXI) and 42-321-125-HI (PXIe) are dual 11-channel 2-pole high voltage multiplexers capable of hot or cold switching up to 1000 V peak. They are also available in a range of bank sizes with 1 or 2 poles and channel counts between 4 and 48. High quality reed relays are used throughout.
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PXIe High Voltage Programmable Resistor Module, D-Type Connector
42-230-133-HI
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The 40-230-133-HI (PXI) and 42-230-133-HI (PXIe) are programmable resistor modules with 1 channel which can be set between 3.5Ω and 52.4kΩ with 1Ω resolution with maximum voltage of 1kV. The 40/42-230 range provides a simple solution for applications requiring voltage handling up to 1kV (9-pin D-type connector) or 1.2kV (22-pin REDEL connector).
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Relaying Current Transformer Analyser
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*Measures Ratio, Excitation Characteristics, Polarity, Winding Resistance, Remanance, and Insulation Resistance of secondary winding. * Determines Composite Error. * Used to test un-mounted CTs or CTs that are mounted but isolated inside the power system equipment. * Conducts a whole series of tests automatically, thus speeding up the time to commission CTs and relaying systems. * Battery powered test set - light weight & fully portable. * Provides a graphical presentation of the CT excitation characteristics. * Determines the IEC 10/50 knee point and the point of maximum permeability, ANSI 45 degree Slope Point. * Detects shorted turns or insulation problems within the test CT, thus avoiding commissioning of faulty equipment.
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High Voltage Micro-SIL Reed Relays
Series 119
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The Series 119 is a range of Micro-SIL Single-In-Line reed relays intended for voltages that are beyond the capabilities of conventional SIL reed relays. The 1 Form A, 1kV version is pin and package compatible with the established and popular Series 109P.
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Replacement Hook Clips for High Voltage Differential Probe
PK-HVA-03
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Replacement Hook Clips for High Voltage Differential Probe
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High Voltage Relays
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Sensata | GIGAVAC brings you decades of experience in DC and RF applications of high voltage relays. With a variety of voltages from 2- 100kV, we will spend the time to guide you through all of the possible selections and tradeoffs. You can then make an informed decision based on performance and price. Our online Application Notes available 24/365 help explain the finer points surrounding High Voltage Relays.
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PXI/PXIe High Voltage Multiplexer, Dual 4-Channel, 1-Pole
42-321-100-HI
Multiplexer Module
The 40-321-100-HI (PXI) and 42-321-100-HI (PXIe) are dual 4-channel 1-pole high voltage multiplexers capable of hot or cold switching up to 1000 V peak. They are also available in a range of bank sizes with 1 or 2 poles and channel counts between 4 and 48. High quality reed relays are used throughout.
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2kV, 80 MHz High Voltage Differential Probe
HVD3206A-6M
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The HVD3000A series of high voltage differential probes cover the fullest range of applications, from 120/240 V switch-mode power supplies through 600 V class and 5 kV electrical apparatus. The table below provides a list of recommended probe models based on specific device under test applications.
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LXI High Voltage Switching - 10xSPST Plugin Module
65-233-904-HI
Switch Module
The 65-233-904-HI plug-in module is part of a scalable high voltage switch platform that provides a high voltage switching solution with capability up to 9 kV.
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PXI High Voltage Programmable Resistor Module, D-Type Connector
40-230-142-HI
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The 40-230-142-HI (PXI) and 42-230-142-HI (PXIe) are programmable resistor modules with 1 channel which can be set between 4Ω and 392kΩ with 0.5Ω resolution with maximum voltage of 1kV. The 40/42-230 range provides a simple solution for applications requiring voltage handling up to 1kV (9-pin D-type connector) or 1.2kV (22-pin REDEL connector).
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PXIe High Voltage Programmable Resistor Module, D-Type Connector
42-230-136-HI
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The 40-230-136-HI (PXI) and 42-230-136-HI (PXIe) are programmable resistor modules with 1 channel which can be set between 3.5Ω and 395kΩ with 8Ω resolution with maximum voltage of 1kV. The 40/42-230 range provides a simple solution for applications requiring voltage handling up to 1kV (9-pin D-type connector) or 1.2kV (22-pin REDEL connector).
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Transformer Resistance Testing
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Weshine Electric Manufacturing Co., Ltd
Transformer insulation resistance deterioration is one of the most common causes of transformer failure: a failing transformer is a costly replacement in an electrical system with the potential for a long downtime. If you fail to maintain your transformer with regular insulation resistance testing (as can be carried out by the WESHINE Transformer Ohmmeter (VS-3110 series) of transformer test equipment) then it’s likely to fail before reaching its maximum operating life.
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High Collector To Emitter Voltage
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High collector-to-emitter voltage photocouplers (optocouplers) are optically coupled isolators containing a GaAs infrared light emitting diode and an NPN silicon Darlington connected phototransistor. The isolation voltage during input and output and the voltage between the collector and the emitter of the transistor are both high.
