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Frequency Response Analysis (FRA)

The HVEX FRA Frequency Response Analysis Test allows for the analysis of frequency response in linear systems. Utilizing frequency domain techniques, the FRA enables various types of measurements, including spectral signature analysis, open-circuit measurement, short-circuit measurement, capacitive measurement, and inductive measurement. The FRA is the ultimate solution for evaluating

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Electric Barrier

The Fish Mortality Mitigation and Rescue System for Hydraulic Ducts is an electro-sensitive solution developed for hydroelectric plants and hydraulic systems designed to protect aquatic fauna and reduce fish mortality. The system uses controlled electric fields to prevent fish from approaching turbines and suction ducts, producing a mild stimulus that repels them without causing harm.

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Partial Discharges Calibrator

HVEX Partial Discharges Calibrator is portable equipment that allows calibration with bipolar pulses at different intensities and frequencies, and can therefore be applied to partial discharge measuring instruments in oil or dry insulated transformers, generators, motors, bushings, cables, etc.

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Climate Chamber - Salt Spray Test Module System

HVEX Climate Chamber is designed to replicate extreme climatic conditions with high sea spray contamination and salinity. This modular system is the ideal solution to meet the most stringent technical standards, ensuring reliability in corrosion tests.

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Coupling capacitor for PD tests

HVEX offers coupling solutions for partial discharge (PD) and radio interference voltage (RIV) measurements, selected for each application: couplers for capacitive bushing taps, high-voltage test capacitors, and monitoring capacitors for motors, generators, and dry-type transformers.

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Thermal Cycle and Current Source

The Current Induction Loop is an effective solution for electrical tests, composed of a set of functional units that operate simultaneously with the test circuit, supervisory software, and acquisition hardware. It features HVEX Acquisition software that controls, triggers, and analyzes the tests, storing information and data history, providing safety and modular control

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High Potential Source - HIPOT

HVEX's High Potential Sources (HIPOT) are designed to provide reliable performance in high-voltage tests on electrical equipment. Whether assessing the dielectric insulation capacity or conducting specific tests, our sources ensure controlled voltage levels for precise results.

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Voltage Impulse Generator

Discover our cutting-edge technology in high-voltage impulse generation. Tailor-made, our generator is the reliable solution for evaluating the resistance of electrical equipment to atmospheric and switching surges.

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Current Impulse Generator

The HVEX Current Impulse Generator tests surge arresters, surge protective devices (SPDs), and their varistors using 4/10 µs, 8/20 µs, and 10/350 µs current impulses, according to the specified configuration. Current amplitude is expressed in kA, while residual voltage across the test specimen is measured in kV. Maximum system ratings: impulse current up to 350 kA and residual voltage up to 250 kV.

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Repetitive Impulse Generator

HVEX offers the Repetitive Impulse Generator, an essential element for dielectric evaluation of electrical equipment. As the only national manufacturer, we customize solutions following rigorous standards. With HVEX LIAS for remote control and automated security, we ensure reliable performance and safety.

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Surge Generator in Reactor Coils

The Reactor Coil Overvoltage Generator is a high-voltage test system developed by HVEX to evaluate the integrity of the longitudinal insulation of air-core dry-type reactors. The equipment subjects the coil to a series of impulse overvoltages to verify the dielectric’s robustness and identify incipient faults before the reactor enters service on the power grid.

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VLF Hipot Test Set

VLF is an advanced voltage tester that utilizes digital technology to ensure precise and safe testing on high capacitance loads such as high voltage cables, large motors, and generators. With direct sampling of current, voltage, and waveform data from the high voltage side, it provides increased accuracy and features overvoltage protection for quick interruption. Operated by a contro

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Routine Test Laboratory for Instrument Transformers

The Routine Testing Laboratory is a comprehensive, automated solution developed by HVEX for performing routine tests on instrumentation transformers—potential transformers (PTs) and current transformers (CTs)

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Routine Test Laboratory

Automated laboratory for routine testing of metal-oxide distribution surge arresters: power-frequency reference voltage, leakage current and partial discharge, with result recording and laser marking according to configuration.

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Transformer and Motor Test Laboratory

Configurable automated laboratory for routine testing of transformers or motors, with a compact container installation. The motor configuration covers applications up to 2 MVA, with instrumentation, power supply and test sequences specified for each application. The transformer configuration integrates no-load and load losses, applied and induced voltage, winding resistance and turns ratio tests.

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Portable Partial Discharge Meter

Portable case-mounted system for measuring, analysing and recording partial discharge in high-voltage equipment, with AI-assisted diagnosis and traceable reports.

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PD and RIV Measurement System

The PD-RIV Sensor is a device for evaluating partial discharge (PD) and radio frequency interference (RIV) currents in electrical assets. With oil or epoxy insulated capacitors and phase voltages ranging from 13.8 kV to 500 kV, it is versatile for indoor or outdoor use. It has comprehensive applications including generators, transformers, high-voltage conductors, reactors, circuit bre

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Insulation Resistance Tester

The HVEX Megohmmeter is the ideal instrument for measuring the insulation resistance of electrical equipment. Over time, insulation tends to degrade, especially due to abnormal voltage levels and inadequate conditions. Regular tests are conducted to identify signs of aging and degradation. The HVEX insulation resistance tester is the perfect choice for those seeking safe, fast, and ac

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Tangent Delta and Capacitance Tester

HVEX Tangent Delta Tester is a fully automatic device designed to perform tests measuring the Dielectric Loss Factor (tan δ) and capacitance in various electrical equipment, such as transformers, bushings, capacitors, current transformers, and potential transformers.

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Winding Resistance and TTR Tester

The TTR-OHMMETER Test Module from HVEX is a compact and portable solution designed for precise analysis of the transformer transformation ratio, identifying potential issues such as shorted coils, open circuits, and incorrect connections. Additionally, the equipment performs resistance measurements in highly inductive loads, providing a comprehensive approach for testing transformers and motors.

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100A Contact Resistance Tester

The HVEX 100A microhmmeter is a contact resistance tester case which is crucial for ensuring the efficiency and safety of electrical systems. Designed to perform precise tests, it is used to measure the resistance between contact points in components such as relays, disconnect switches, and circuit breakers, detecting hidden issues like loose connections, breaks, aging, or corrosion t

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40A Winding Resistance Tester

The HVEX 40 A Ohmmeter Case is a versatile solution for measuring the ohmic resistance of windings such as coils, reactors, and transformers. Once a resistance range is established for the type and class of the equipment being tested, a divergent measurement can indicate issues such as insulation failure, a short circuit between turns, or a partial break with insufficient conduction.

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Transformer Bushing Monitor for PD

Essential in asset management, HVEX's PD Monitor is an advanced solution for power transformer monitoring, designed to detect and assess faults in high-voltage bushings and windings. Its performs online measurements of partial discharges, capacitance, and dissipation factor in condenser bushings, providing information about insulation status and facilitating preventive maintenance

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Cable Fault Detector

The HVEX cable fault detector offers a comprehensive solution for identifying and locating faults in power cables, whether they are underground or within conduits. Comprising an intelligent tester, an impulse generator, and an acoustic locator, it utilizes principles of impulse signals, wave reflection, and acoustics for precise detection, estimating the distance to the fault and pinp

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Nickel Chromium Resistor

Nickel-chromium resistors are fundamental electronic components, utilizing the "nichrome" metallic alloy composed mainly of nickel and chromium as resistive material. Recognized for their exceptional electrical and physical properties, such as high resistivity and thermal stability, these resistors play a crucial role in a variety of applications, from consumer electronics to industrial environments. The ability of nichrome to offer stable and predictable electrical resistance makes these resistors essential in scenarios that demand precision and reliability.

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TOV Temporary Overvoltage Tester

HVEX temporary overvoltage (TOV) test system for single-phase or three-phase low-voltage surge protective devices (SPDs). The documented configuration includes a TOV transformer with a 1200 V secondary and a 5 kVA rating. Test parameters are selected for the SPD and the applicable procedure.

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Transformer Turn Ratio Tester TTR

HVEX Transformer Turns Ratio Tester (TTR) has been designed to allow for a concise analysis of the turn ratio in power, instrumentation, and distribution transformers, both during manufacturing and after extended use. Equipped with a high-capacity internal battery, it offers exceptional portability and combines compact size with high precision for reliable testing in any environment.

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Electric Tracking and Erosion System

Designed to test the resistance of dielectric materials to the formation of carbonized tracks. It allows for automatic measurements on up to 5 samples simultaneously, according to IEC 60112 and IEC 60587 standards. With a robust and automated design, the testing environment is isolated to ensure accurate results, while a sinusoidal filter controls harmonic distortion

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High Voltage Measurement System

Tests on electrical equipment often require voltage levels that are incompatible with the reading capacity of devices such as oscilloscopes and protective relays. The HVEX high-voltage measurement systems use resistive dividers to provide precise measurements of alternating, direct, or impulsive voltage. They stand out for their wide operating range and broadband reading capability, with customization available to meet the specific needs of each application.

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Transformer Monitoring System

The HVEX Monitoring System connects transformers to smart grids, sending real-time data such as voltage, current, and overload. It allows for the analysis of asset lifespan, detection of losses, and optimization of grid operation, as well as enabling energy balancing and time-of-use billing.

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Circuit Breaker Tester

The circuit breaker timer is a comprehensive solution for testing actuation time, monitoring and controlling input and output parameters. It can be used with sensors to measure mechanical displacement and the opening time of the poles. It is applicable to various types of circuit breakers, including oil, vacuum, and SF6 types, across different voltage levels.

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Six-Phase Relay Tester

HVEX Six-Phase Relay Tester plays a crucial role in verifying the functionalities of protection systems before installation. Equipped with advanced technology and precision components, it is compact, lightweight, and comprehensive, providing ease of transport for various protection and selectivity tests.

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Electrical and Thermal Transducer

HVEX Electrical and Thermal Quantities Transducer is the reliable solution for the precise conversion of signals in automation, measurement, and control systems. Designed for extreme environments, it offers versatility in applications that require the conversion of DC or AC voltage/current into signals compatible with PLCs and controllers.

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Single-Phase Oil-Cooled Variable

The HVEX Oil-Cooled Single-Phase Voltage Regulator is a variable autotransformer (known as a Variac or Varivolt) that provides an adjustable output voltage ranging from 0 to 220 V from a fixed input voltage of 220 V. It is a sealed unit with internal oil cooling.

Laboratórios de ensaio

Frequency Response Analysis (FRA)

Electric Barrier

Partial Discharges Calibrator

Climate Chamber - Salt Spray Test Module System

Coupling capacitor for PD tests

Thermal Cycle and Current Source

High Potential Source - HIPOT

Voltage Impulse Generator

Current Impulse Generator

Repetitive Impulse Generator

Surge Generator in Reactor Coils

VLF Hipot Test Set

Routine Test Laboratory for Instrument Transformers

Routine Test Laboratory

Transformer and Motor Test Laboratory

Portable Partial Discharge Meter

PD and RIV Measurement System

Insulation Resistance Tester

Tangent Delta and Capacitance Tester

Winding Resistance and TTR Tester

100A Contact Resistance Tester

40A Winding Resistance Tester

Transformer Bushing Monitor for PD

Cable Fault Detector

Nickel Chromium Resistor

TOV Temporary Overvoltage Tester

Transformer Turn Ratio Tester TTR

Electric Tracking and Erosion System

High Voltage Measurement System

Transformer Monitoring System

Circuit Breaker Tester

Six-Phase Relay Tester

Electrical and Thermal Transducer

Single-Phase Oil-Cooled Variable

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