Medium/High Voltage Testing

Testing, inspection and certification for power transmission & distribution equipment

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  • Reliable equipment is paramount to a safe energy production

    For power grid operators and utility companies the reliability of their power transmission and distribution equipment installed in their network is vital. Investments in grid renewal and extensions are costly; equipment needs to last for decades. On top of that, it is important to eliminate electrical failures, reduce power outages, and increase the safety of people who work in critical environments.

    A safe power grid, safe equipment and systems, adequate processes and trained employees are paramount. By working with an independent third party like DEKRA, manufacturers can prove that their products have been tested according to international standards, meet end-user specifications, and relevant safety regulations. At the same time, grid operators and utility companies can rely on our certificates, reports, and verification services to assure the required level of reliability and safety.

    DEKRA makes sure that manufacturers comply with international standards, national deviations and end-user specifications to maintain a high level of safety and reliability. We offer you the complete scope of low, medium and high voltage testing for power transmission & distribution equipment. Our services are applicable to equipment manufacturers, energy utility companies, grid operators and large-scale energy users, amongst others.

    High voltage laboratory

    DEKRA is an approved third party inspection and testing company by power grid operators and utility companies in a large number of countries in Europe, Middle East, Asia and South America. VEIKI-VNL joined the DEKRA family in 2017 and complements DEKRA’s capabilities with a broad range of in-house testing services, e.g. short circuit testing (including short-circuit testing liaison [STL] membership), high voltage testing and temperature rise testing as well as aging tests. VEIKI-VNL supplies its services to reputable national and international transmission and distribution (T&D) equipment manufacturers as well as energy utility companies in over 40 countries on all continents.

  • Why DEKRA?

    Expert knowledge of standards

    Our experts have profound knowledge of standards, supported by their active participation in consortia and standardization groups.

    Flexible testing routes

    We offer very flexible testing routes: in our DEKRA labs in Dubai, Hungary, Asia, or the Netherlands. Or in your own laboratory or third-party lab under supervision.

    Widely recognized certificates

    Our test certificates and test reports are widely recognized and accepted by grid operators, utility companies, end users, governments, and more around the world.

  • Our services

    Typical services we offer include type testing, product certification, production supervision, factory acceptance tests, quality assurance, factory inspections, non-destructive testing, failure investigations, and inspections as part of asset management programs. We believe testing should be done as close as possible to manufacturers and end users. That’s why we offer testing near your premises, either in one of the DEKRA laboratories, your own laboratory under DEKRA supervision or in one of our associated third-party laboratories under DEKRA supervision.

    We provide local services to help you extend your global reach

    Our testing laboratories are located in the Netherlands, Hungary, the United Arab Emirates and China. In addition, our Dutch and China-based high-voltage inspection teams witness type testing at manufacturers’ sites and/or third-party laboratories around the world, including in Europe, the Middle East, South Korea, China, Japan and the USA.

    Our certificates and test reports are widely recognized and accepted by grid operators, utility companies, end users, governments, authorities and other stakeholders around the world. We can provide you with a reference list on request. The DEKRA services cover a wide range of products and standards for which we are accredited as a testing laboratory (ISO-IEC 17025), as an inspection body (ISO-IEC 17020) and as a Certification Body (ISO-IEC 17065). Our employees are highly qualified and experienced, and personal references can be provided on request.

    Middle East

    The DEKRA Middle East Testing Laboratory, located in Dubai, UAE, performs tests for products such as switchgear assemblies, cables, busbar trunking systems and packaged substations in line with national and international standards and client-specific requirements. In addition, preliminary testing is performed during the product design phase.

    Selected recognitions

    • ISO 17065
    • ISO 17025
    • ISO 17020
    • National Certification Body (NCB) within the IECEE CB scheme and operator of CB
    • Notified Body (NB) for various European Directives
    • Short-circuit Testing Liaison (STL) member
    • Certification Body and Testing Laboratory approved by a wide range of government authorities, end users and consultants in Europe, the Middle East and Asia

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  • Active in the entire energy grid

    At DEKRA, we work to provide safety throughout the entire power value chain, from where power is generated and transmitted to the final distribution and user. Our experts carry out many different tests throughout our global network of laboratories. Those tests include:

    • Short circuit tests
    • Making and breaking tests
    • Short-time and peak withstand tests
    • Synthetic tests on high-voltage circuit breakers
    • Power arc tests
    • Dielectric tests
       - Lightning-impulse
       - Switching-impulse
       - Power frequency voltage tests
       - Heat cycle ageing tests
       - RIV and Corona tests
       - Partial discharge measurements
    • Determination of sound level of any equipment
    • Temperature-rise tests
    • Mechanical tests, pollution and aging tests

  • Where we can help you in the power value chain:

    Power generation

    - Power plants
    - Control equipment for nuclear power plants
    - Solar installations (photovoltaic)
    - Rotary equipment (onshore wind turbines)

    Power transmission (HV)

    - High-voltage inspection services
    - High-voltage electrical equipment
    - High-voltage fuses
    - Insulator sets
    - Enclosed electrical equipment
    - Over-voltage protection equipment
    - Overhead line conductors and assemblies
    - Reactors
    - Submarine cables
    - Equipment for live line working (FAM)

    Power distribution (LV, MV)

    - Low-voltage (LV) switchgear assemblies
    - Medium-voltage (MV) switchgear
    - LV & MV busbar trunking systems
    - Circuit breakers
    - Transformers
    - Reactors
    - Submarine cables
    - Cables and cable accessories

    Power supply

    - Switch and controlgear devices
    - Motor starters
    - Protection devices
    - Installation devices
    - Distribution boards
    - Cables and cable accessories
    - EV charging stations
    - Energy storage units

    Power quality

    - Power factor correction panels (PFC)

    Smart grids

    - Sensors
    - Remote operated devices
    - Software (IEC 61850)
    - Cyber Security
    - Internet of Things (IoT)

    Where we can help you in the power value chain:

    Power generation

    - Power plants
    - Control equipment for nuclear power plants
    - Solar installations (photovoltaic)
    - Rotary equipment (onshore wind turbines)

    Power transmission (HV)

    - High-voltage inspection services
    - High-voltage electrical equipment
    - High-voltage fuses
    - Insulator sets
    - Enclosed electrical equipment
    - Over-voltage protection equipment
    - Overhead line conductors and assemblies
    - Reactors
    - Submarine cables
    - Equipment for live line working (FAM)

    Power distribution (LV, MV)

    - Low-voltage (LV) switchgear assemblies
    - Medium-voltage (MV) switchgear
    - LV & MV busbar trunking systems
    - Circuit breakers
    - Transformers
    - Reactors
    - Submarine cables
    - Cables and cable accessories

    Power supply

    - Switch and controlgear devices
    - Motor starters
    - Protection devices
    - Installation devices
    - Distribution boards
    - Cables and cable accessories
    - EV charging stations
    - Energy storage units

    Power quality

    - Power factor correction panels (PFC)

    Smart grids

    - Sensors
    - Remote operated devices
    - Software (IEC 61850)
    - Cyber Security
    - Internet of Things (IoT)

  • Meet our experts

  • person general
    Contact person

    Alphons Baas

    Industrial market segment, Global/Europe
  • person general
    Contact person

    Lucy Zou

    Industrial market segment, Asia


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