Digital Star
Technical papers
Growing Demand for Testing DC Cables & Accessories: Experience & Special New Requirements
​ High-voltage direct-current (HVDC) technology is a growing field in the T&D sector, allowing transmission of bulk quantities of energy with a reduced impact on infrastructures and reduced losses. The performance level of today’s HVDC solutions allows to gain advantage from technical, economic and environmental points of view. HVDC power transmission becomes more and more […]
Go to
High Power Testing Laboratories
High Power Testing: Advanced Methodologies and Certifications
KEMA Labs High Power Laboratories stands at the forefront of cutting-edge high power testing solutions, catering to the intricate requirements of global utilities and equipment manufacturers. With our state-of-the-art facilities and seasoned test engineers, we provide technical expertise and precision in high power testing. Comprehensive High Power Testing Capabilities Our extensive repertoire of high power […]
Go to
Testing Labs
High Voltage Testing
Component manufacturers are continually striving to produce equipments that are capable of operating at higher voltage stresses with more challenging insulation coordination requirements.  Research and development into these cutting-edge components is increasingly important due to the growing need to move energy over longer distances.  The High-Voltage Laboratory at KEMA Labs is an independent facility that […]
Go to
High Power Testing Laboratories
High-Power Testing Services
High-Power Testing Services Kema Labs Laboratories provide high-power testing services which include short circuit, switching testing, and short-time current testing based on international and regional standards, to utilities and equipment manufacturers all over the world. Several high-power labs are available in different locations, with short circuit power starting from 2,000MVA up to 15,000 MVA three-phase, […]
Go to
Testing Labs
Services IEC/IEEE Testing Services and recent updates
International Standards provide instructions, guidelines, rules, or definitions that are then used to design, manufacture, install, test & certify, maintain, and repair devices and systems. They are essential for quality and risk management; they help researchers to understand the value of innovation and allow manufacturers to produce products of consistent quality and performance. International standards […]
Go to
On Site Testing
Testing Inspection and Certification
On Site Testing
Whenever you install a new or refurbished component, it is essential to verify that it works properly before you put the component or substation into service. Even the smallest failure could cause a full-scale short circuit – with potentially disastrous consequences. Kema Labs offers onsite commissioning testing of components such as transformers, generators and high-voltage […]
Go to
Cables and Accessories
Products Expertise
Cables and Accessories
The increasing global demand for electricity in both industrialized and emerging markets is driving demand for cables systems. We carry out type tests to verify the design of LV, MV and HV cables and their accessories. Type testing allows you to prove that your cables and cable accessories meet the highest quality standards to deliver […]
Go to
High Power Testing Laboratories
Testing Labs
High Power Testing Laboratories
Kema Labs High Power Laboratories provide short circuit, switching testing and short time current testing based on international and regional standards, to utilities and equipment manufacturers all over the world. Several high power labs are available in different locations, with short circuit power starting from 2,000MVA up to 15,000 MVA three phase, the widest range […]
Go to
High Voltage Testing Laboratories
Testing Labs
High Voltage Testing Laboratories
It has become increasingly important to be able to transport energy over longer distances, pushing manufacturers to research, develop and produce components that can operate at higher voltages. KEMA Labs High-Voltage Laboratories is a renowned independent facility for testing and certifying medium and high voltage components used in electrical infrastructure. Our Laboratories can test cables, […]
Go to
Technical papers
PD in cable accessories
Optical PD detection in high voltage cable accessories A novel method in order to perform diagnosis of the insulation system is optical partial discharge detection. This method does not work with the electrical signals which are caused in case of partial discharges but rather detects the optical signals which are coming up at the same […]
Go to
Technical papers
Safety aspects of MV and HV underground cables and accessories in urban areas
The booming of renewable power stations (solar and wind mill mainly), the increase use of Interconnectors and submarine cables, the construction of urban substations in big cities with intense population and the need to avoid the use the overhead lines (right of way and so on), are the main factors leading to the increasing amount […]
Go to
HV tests for on-site cable diagnostic
Views
HV tests for on-site cable diagnostic
Energy utilities need on-site AC high-voltage acceptance tests on their cable systems and switchgear, in order to ensure the quality of their transmission systems; such tests need to be performed on site with special equipment as well as remarkable measurement technology and diagnosis at voltages of up to 500 kV. Complete acceptance tests such as […]
Go to
Technical papers
Optical PD detection in high voltage cable accessories
Optical partial discharge detection is a new method to perform diagnosis of the insulation system detecting optical signals which are coming up at the same time.This method does not work with the electrical signals which are caused in case of partial discharges though. On the basis of this different physical process, external electrical noise can […]
Go to
Jicable’15
News
Jicable’15
​CESI Group will be present with four papers at Jicable Conference in Versailles, France from 21st to 25th June. Jicable is the main forum where you can meet with the major experts in AC and DC insulated power cables and their accessories, from low voltage and special cables up to ultra-high voltage cables as well […]
Go to
Technical papers
Safety issues in case of internal arc on HV cable terminations, bushings
Worldwide demand for new T&D networks will increase in the near future pushing the utilities to install a larger number of high voltage equipment like cable terminations, bushings and surge arresters. Meanwhile the attention to environmental and safety issues is generally increasing. The aim of this paper is to analyze the potential risks associated with […]
Go to
Services IEC/IEEE Testing Services and recent updates
IEEE C57.164:2021 – Guide for establishing Short-Circuit Withstand Capabilities of Power Transformers, Regulators, and Reactors
This IEEE Guide describes the ways to establish the capabilities for withstanding short-circuit currents resulting from external short-circuit faults. The procedures described in this document are always based on the results of actual short-circuit tested transformers, being used directly as reference or the evaluated short-circuit stresses during such tests. Other standards and updates New editions […]
Go to
CESI AT INMR
News
CESI AT INMR
​Milan, October 15, 2019 – CESI will attend the INMR World Congress in Tucson, the event focused on design, operation and inspection of overhead and underground power lines as well as substations. CESI will be present at the related Exhibition area with its Testing and Certification Delegates to show its innovative services related to TIC […]
Go to
Technical papers
Transparent Fluorescent Silicones
Characterization of Transparent Fluorescent Silicones for Optical Monitoring of High-Voltage Cable AccessoriesThe mechanical and electrical properties of new transparent silicone materials modified with two fluorescent dyes were investigated by measuring stress-strain behaviour, electrical breakdown strength, capacity and dissipation factor, before and after thermal ageing, as well as electrical and optical partial discharges. Mechanical properties of […]
Go to
CESI AT THE 2017 INMR WORLD CONGRESS
News
CESI AT THE 2017 INMR WORLD CONGRESS
Barcelona, November 6  2017 – CESI is at the 2017 INMR World  Congress, presenting two papers. On top of that, our company is pleased to welcome participants to its stand, n.° 59&60, in the exhibition area.The first CESI paper “Trends in Energy & Electrical Power Worldwide & Impact on Development of T&D Systems” will be […]
Go to
CESI SELECTED BY GERMAN TSOs
News
CESI SELECTED BY GERMAN TSOs
CESI has been selected as one of the contracted testing centers by the four German transmission companies to test both the reliability and safety of the three electricity corridors’ cable systems that will connect the significant wind potential of the North and Baltic Sea to the big cities and to the vast industrial complexes of […]
Go to