1• Water law
Since the 1992 Water Act, “water is part of the nation’s common heritage”. Water quality must therefore be preserved as far as possible and developed as an economic resource to preserve aquatic ecosystems and ensure the proper development of water resources. Balanced management of water resources must therefore be ensured: “One or more master plans for water development and management set out the fundamental guidelines for balanced management of water resources for each basin or group of basins”.
Source: https://www.legifrance.gouv.fr/loda/id/JORFTEXT000000173995
In compliance with the French Water Act (decree 77-254), the water discharged from the tanks is not contaminated with more than 5 ppm of hydrocarbons after passing through our SPI anti hydrocarbons water filters, in accordance with standard EN 858-1 (“Light liquid separation installations”).
Source: https://www.legifrance.gouv.fr/loda/id/JORFTEXT000000649171
Source: https://www.boutique.afnor.org/fr-fr/norme/nf-en-8581/installations-de-separation-de-liquides-legers-par-exemple-hydrocarbures-pa/fa027566/20712
Our SPI® anti hydrocarbons water filters meet these standards and are regularly tested by independent laboratories: SANERGRID Bureau Veritas report certified COFRAC I.D.: 003606/2776443/1/1/1 in 2015 (France), SPI Phoenix I.D. laboratory reports: AR67044 from 2002, 2004, 2005, 2009, 2018, 2022 (USA), TÜV report Nr 2432974 in 2016 (Germany), NUA report -Z-11895-1/1-2016. (Non-exhaustive list)
The SPI® filter technology is the European benchmark for filter cartridges for small-volume retention of rainwater contaminated with hydrocarbons. It is the only filter on the market that has been validated for over 30 years by the largest French and European industrial companies (EDF, ENEDIS, SNCF, SCHNEIDER, RTE, ABB HITACHI, SIEMENS, IBERDROLA, NATURGY, REE, EDP, ENEL, IREN, TERNA, E-ON, RWE, VATTENFALL, ELIA, ESB, SCOTTISH POWER, NATIONAL GRID, NETWORK RAIL, UK PN, BRITISH PETROLEUM, TOTAL ENERGIE, BASF, BAYER, ELES, CERN, ITER, VOLVO, DEUTSCHE BAHN, ADIF, SNCB, REPSOL, etc… non-exhaustive list).
2• Retention standards
Standard NF EN 61936-1, relating to the design and installation of electrical installations, which requires watertight retention representing 100% of the volume of oil used, and provides the necessary indications for pre-dimensioning retention volumes and surfaces, fire safety distances and systems, and rainwater management associated with the outdoor storage of hydrocarbons.
Our single welded retention tanks (TRT range) or with removable fronts (BDRG range), watertight retention tanks (ERT range and TRT-LHD range) and flexible bins for temporary storage (TRFLEX range) can meet the requirements and constraints of your facilities, guaranteeing 100% watertight retention.
3• General electrical installation standards
High-voltage electrical installations are governed by standard NF C13-200 and delivery stations supplied by a public HV distribution network are governed by standard NF C13-100.
French standards NF C13-100 and NF C13-200 prevent the electrical risks of overcurrents, earthing problems, fire risks, short circuits, soil pollution and environmental pollution. They protect people and property in direct or indirect contact with electrical installations.
NF C13-200 “applies to installations supplied with alternating current at a nominal voltage greater than 1,000 V and less than or equal to 245 kV, the preferred frequencies being 50 Hz and 60 Hz”.
It advises on the installation of annexes by providing advice on the design of installations: the most common electrical installation distribution architectures, classification of earth connection diagrams, examples of dielectric recovery devices, determination of the k factor, etc.
NF C13-200 states that dielectric oils from power transformers must be recovered using an appropriate device or a liquid dielectric extinguishing pit with an integrated recovery tank for transformers with a power rating of over 1,250 kVA. Above 40 MVA, oil-filled transformers must be fitted with a liquid dielectric extinguishing pit with a separate recovery tank.
- Dielectric recovery pits must be watertight and designed to withstand the temperature rise caused by the properties of the dielectric.
- Where several transformers share a recovery system, it must be designed to prevent fire spreading from one transformer to another.
- A fire trap must be used when the distance between the discharge pipes and the recovery tank is less than 15 m.
- Every precaution must be taken to ensure that the recovery tanks do not fill with water.
- Oil and water must be separated in a separate recovery tank using appropriate equipment.
- The extinguishing tank must contain at least 20% of the transformer’s liquid. The separate recovery tank may be common to several transformers, but with a capacity at least equal to that of the transformer with the highest capacity.
Source: https://www.boutique.afnor.org/fr-fr/norme/nf-c13200/installations-electriques-a-haute-tension-pour-les-sites-de-production-dene/fa190330/1734
NF C13-100 “deals with electrical energy delivery stations, intended for the connection of a user or producer from the public distribution network at a nominal voltage greater than 1,000 V and less than or equal to 33 kV and with a maximum current equal to 630 A”.
Revised in 2015 to be consistent with NF C13-200, NF C13-100 strengthens the requirements for specifications relating to high-voltage electrical installations.
- Electrical substations must be large enough to allow for the installation and connection of appliances and equipment, as well as for checking and maintenance.
- The delivery substation is located on the site to be served so as to allow access to the substation from the public domain, limiting the length of its connection to the public distribution network.
- The MV substation and the control and protection devices of the delivery substation must comply with the distributor’s technical reference file, which sets out its specifications and authorised equipment.
- Addition of EUROCODE.
Source: https://www.boutique.afnor.org/fr-fr/norme/nf-c13100/postes-de-livraison-alimentes-par-un-reseau-public-de-distribution-hta-jusq/fa185483/45032#AreasStoreProductsSummaryView
La NF C13-100 « traite des postes de livraison d’énergie électrique, destiné au raccordement d’un utilisateur ou d’un producteur à partir du réseau public de distribution sous une tension nominale supérieure à 1 000 V et inférieure ou égale à 33 kV et d’une intensité au plus égale à 630 A. »
Thanks to our highly qualified teams, we are able to offer you a wide range of electrical transformers that comply with the latest laws and standards in force:
- Trafo ELETTRO encapsulated dry-type transformers with enclosures up to IP54.
- Kolektor ETRA’s oil-fired power transformers are fitted with retention devices (BDRG ranges, TRT ranges, ERT ranges, TRT-LHD ranges, TRFLEX ranges), SPI filtration systems® , EXTICOV fire extinguishing covers® , Midsun bird protection® , GALVAGRID anti-corrosion coatings® RUST-ANODE® , SanerVib anti-vibration equipment® , HV insulator protection equipment.
4• Manufacturing control and quality management
Our manufacturing plants are certified ISO 9001 for their quality management process and IS0 14001 for their environmental management process, and are all based in Europe to encourage short supply chains and limit carbon emissions.
Our French and European sites enable us to guarantee that all our steel comes from European production, which is made up of over 50% recycled steel in order to limit the over-exploitation of resources and limit the carbon emissions linked to our manufacturing activities SANERGRID.
Our retention tanks are designed and manufactured in accordance with the European norms and standards of EUROCODE 3 (“Calculation of steel structures”).
Our transformers containment comply with EU Regulation No 548/2014 also known as ECODESIGN on the implementation of Directive 2009/125/EC, which lays down ecodesign requirements for the placing on the market or putting into service of transformers with a power rating of at least 1 kVA used in 50 Hz electricity transmission and distribution networks or for industrial applications. Called ECODESIGN Tiers 1 (2015) and ECODESIGN Tiers 2 (2021).
Source : https://certification.afnor.org/qualite/certification-afaq-iso-9001
Source : https://normalisation.afnor.org/thematiques/eurocodes/#:~:text=The%20Eurocodes%20are%20the%20codes,march%C3%A9s%20of%20other%20countries%20members
5• Fire risk management
Our fire extinguishing covers for oil-filled electrical transformers comply with CIGRE 23-07 and IEEE 980 recommendations on the use of fire extinguishing covers for transformer pits and tanks, as well as guidelines on the pre-sizing of indoor and outdoor retention pits and tanks.
NF C17-300 deals with fire risk protection for electrical equipment containing dielectric liquids. It stipulates that equipment containing flammable dielectrics must be protected to prevent the risk of fire, with devices enabling the power supply to the circuits to be cut off in an emergency in the event of a risk of electric shock, fire or explosion. Fire protection equipment, protection against overloads and short circuits, retention devices for liquids on fire and careful maintenance of this equipment on transformers for HV transmission, HTA and LV distribution networks, electrical traction installations used for the rail network and public transport networks must be installed.
Source : https://standards.ieee.org/ieee/980/7038/
Source : https://www.boutique.afnor.org/fr-fr/norme/nf-c17300/conditions-dutilisation-des-dielectriques-liquides-premiere-partie-risques-/fa005598/4112
Our EXTICOV fire suffocating covers® enable you to equip your retention pits and tanks for transformers containing dielectric oils. Our EXTICOV® -CCF™ natural and rapid dielectric extinguishing device is a SONEC model created in 2007, a single-slope flap model proven in the electrical industry for 30 years, a registered trademark with the INPI and tested at the CNPP (National Fire Laboratory) in 2009 and 2011.
Our extinguishing retention tanks (ERT and TRT-LHD ranges) enable you to equip your oil transformers in compliance with current international standards and laws on fire protection for electrical substations.
6• Standards: electrical transformers
The purpose of the International Electrotechnical Commission (IEC) is to promote international cooperation in all matters of standardisation in the fields of electricity and electronics. Working closely with the International Organization for Standardization (ISO), it sets the technical specifications for high-voltage electrical installations, particularly power transformers.
In accordance with IEC 60076, the design plan for power transformers must include solutions for temperature rise, insulation levels and dielectric tests, short-circuit resistance, determination of noise levels and an application guide.
“Electrical transformers immersed in a dielectric liquid must be fitted with a protection and disconnection device to protect the environment, property and people and to prevent any disturbance to the high-voltage network resulting from an internal fault in the transformer.
In addition, IEC 60354 specifies the loading guide for power transformers immersed in oil. It indicates how, within certain limits, transformers can be loaded above rated conditions.
Source : https://webstore.iec.ch/preview/info_iec60076-13%7Bed1.0%7Db.pdf
Source : https://www.boutique.afnor.org/fr-fr/norme/nf-en-iec-6007611/transformateurs-de-puissance-partie-11-transformateurs-de-type-sec/fa192195/82139
Our archives contain over 4,000 different models. Most of them are currently in use in our service activities, and represent a unique source of tradition, innovation, experience and excellence.
- Coated dry-type transformers from Trafo ELETTRO
- Kolektor ETRA oil-filled power transformers