Control methods depend on the equipment model and system configuration. Local touch-screen control, host-computer software, Ethernet and RS485 are available for remote programmable control. The supporting software is provided free of charge.

For programmable load applications, VILVA supports manual programming, intelligent program control, and remote control. Parameters such as voltage, current, power, and power factor can be programmed to reproduce different load conditions, including linear adjustment, step changes, and sudden changes.

For automated production-line or laboratory applications, the control architecture can be configured around the customer's testing process and data-management requirements. The specific interfaces, communication protocols, software functions, and licensing terms should therefore be confirmed according to the selected equipment and project configuration.

Measurement accuracy is model-and-configuration-dependent and should be confirmed against the specific EV charger testing equipment selected. Different testing systems may use different measurement ranges, sensors, control architectures, and accuracy specifications according to their intended application. Standard models deliver ±0.5% FS accuracy for voltage and current.

For high-precision laboratory applications, VILVA provides programmable and precision testing equipment capable of controlled adjustment and measurement of electrical parameters. High-precision versions reach ±0.1%/+0.05% FS, meeting national standard metrology verification requirements.

For projects requiring metrology verification or a defined measurement accuracy, customers should specify the required voltage/current range, accuracy level, applicable standard, and test purpose in advance. VILVA can then confirm the applicable specification for the selected model rather than applying a single accuracy value across all EV charger testers.

VILVA's EV charger testing equipment is designed to evaluate the electrical performance, communication protocols, charging compatibility, and operational stability of EV charging equipment. Depending on the model and configuration, it can support full-load testing, performance testing, protocol communication testing, installation and commissioning, maintenance verification, and other application-specific tests.

For DC charging applications, VILVA's EVD tester can simulate the vehicle side of the charging process and includes BMS simulation functions. It supports protocol and interoperability testing for charging equipment, helping manufacturers and testing laboratories verify whether a charger operates correctly under defined charging conditions.

The applicable test items depend on the charger type, output power, communication protocol, and target market. Customers can provide their charger model, AC/DC type, rated voltage and power, and applicable standard so that VILVA can recommend the appropriate testing configuration.

Yes. VILVA supports customized load-bank solutions for projects with non-standard electrical, mechanical, or functional requirements. Depending on the application, customization can cover rated voltage, power capacity, loading steps, dimensions, control and display configuration, cooling method, installation structure, and other project-specific requirements.

The customization process begins with requirement analysis and solution design, followed by parameter calculation, material selection, production, assembly, commissioning, inspection, aging testing, calibration, and delivery. This allows the load bank to be developed around the customer's actual test equipment, operating environment, installation space, and acceptance requirements rather than forcing the project to fit a standard model.

For a customized quotation, customers can provide the required voltage, power, AC/DC type, loading method or steps, dimensions, installation environment, control requirements, quantity, and intended application. VILVA can then evaluate the technical requirements and propose a suitable configuration, including further customization where required.

VILVA provides after-sales technical support throughout the equipment service period, including troubleshooting and technical assistance for equipment operation and maintenance. Its customized-service process includes after-sales support and a lifetime maintenance system designed to help maintain stable equipment operation.

For overseas projects, initial troubleshooting can be carried out remotely based on the equipment status, operating conditions, alarms, and test data. Depending on the nature of the issue and project requirements, further technical service arrangements can be evaluated to support equipment recovery and commissioning.

To speed up troubleshooting, customers should provide the equipment model, fault description, alarm information, operating conditions, and relevant photos or videos. VILVA can then assess the issue and determine the appropriate technical-support approach.

Warranty coverage depends on the product configuration and the terms agreed for the specific order. VILVA provides after-sales support and maintains a structured lifetime maintenance system for its equipment.

For certain VILVA equipment programs, a standard full-unit warranty is provided, with separate warranty coverage for core components. However, warranty duration and coverage should be confirmed against the quotation, product model, and final sales contract rather than treated as a universal term for every load bank.

Warranty support is intended to reduce operational risk after delivery. Before ordering, customers can confirm the warranty period, covered components, exclusions, response process, and after-sales responsibilities for their specific project.

Lead time depends on the product type, configuration, quantity, customization requirements, and whether the required model is in stock. The lead-time for standard models is around 4 weeks, while customized units require approximately 8 weeks depending on solution complexity.

For customized load banks, the process includes requirement analysis, parameter calculation, R&D, production, assembly, commissioning, inspection, aging testing, calibration, and delivery. More complex electrical specifications, mechanical structures, control systems, or site requirements may therefore require additional time.

For accurate project planning, customers should provide the required voltage, power, load type, loading steps, quantity, customization requirements, and desired delivery date. VILVA can then confirm the applicable production schedule before the order is finalized.

VILVA has project experience across data centers, power generation, UPS, energy storage, EV charging, and industrial power testing. Reference project cases can be provided upon request. The company also provides testing equipment and solutions for EV charging and new-energy applications, including a dual-standard EV charger testing project for manufacturers in Belarus. These projects demonstrate VILVA's ability to handle both standard equipment supply and application-specific testing requirements.

For customers evaluating a solution for a specific industry or project type, relevant case information can be discussed according to the application. Customers can share their equipment type, testing capacity, site conditions, and acceptance requirements so that VILVA can recommend a suitable reference solution.

VILVA operates under an ISO 9001:2015-certified quality management system and has obtained relevant CE, CQC, and CCC certifications listed on its official website. The company is also recognized as a National High-Tech Enterprise and a Specialized, Refined, Special and New Enterprise.

For export projects, the applicable certification and compliance documentation depends on the specific product, model, destination country, and market-access requirements. VILVA's products are exported to markets including the United States, Germany, Canada, and Southeast Asia, demonstrating experience in serving international customers.

Customers can provide the destination market, equipment model, and applicable standards in advance. VILVA can then confirm the available certificates and technical documentation for the selected equipment rather than applying the same certification package to every model.

VILVA uses core components from established brands, depending on the equipment configuration. These components are selected to provide reliable operation, electrical compatibility, and stable performance in demanding testing environments.

At the same time, VILVA independently develops and manufactures its alloy resistors in-house. This gives the company greater control over key components, product quality, accuracy, and supply availability, while reducing dependence on external suppliers for critical resistive elements.

This combination of internationally recognized components and in-house manufacturing capabilities supports VILVA's approach to stable, reliable load-bank production. The exact component brands and configuration can be confirmed according to the specific model and project requirements.

Environmental requirements depend on the load-bank model, cooling method, power level, and installation environment. Before selecting a load bank, factors such as ambient temperature, altitude, dust, moisture, ventilation, installation space, and test duration should be considered to ensure stable operation.

The standard operating ambient-temperature range is -10℃ ~ 50℃. Please notify us in advance for high-altitude or high-dust environments so that we can provide adapted solutions. For demanding environments, VILVA can develop customized load-bank solutions based on the actual working conditions. Its customization process covers requirement analysis, parameter calculation, design, production, commissioning, inspection, aging testing, calibration, delivery, and after-sales service, allowing key parameters and configurations to be adapted to different application environments.

For high-altitude, high-dust, outdoor, or other non-standard environments, customers should provide the site conditions in advance. VILVA can then evaluate the required cooling, protection, structural, and control configuration rather than applying a standard specification to every project.

For outdoor and large-scale construction-site testing, container-type load banks are a practical option because the load body, cooling, control, and protection systems are integrated into a standard container structure. They are designed for on-site high-power testing and can be moved or lifted as a complete unit without requiring a dedicated test room.

VILVA's container load banks are designed for all-weather operation, with protection against rain, dust, wind, shock, and high- and low-temperature conditions. They are suitable for on-site acceptance and operation and maintenance testing of large generators, power stations, wind and photovoltaic power projects, and grid-related projects. Container-type load banks reach an IP54 protection rating, being rain-proof and dust-proof for open-air outdoor operation.

The required protection configuration should nevertheless be confirmed according to the actual site conditions. For projects involving severe dust, rain, temperature extremes, or frequent transportation, customers should provide the expected environment and test conditions so that VILVA can select or customize a suitable configuration.