62271-202:2007. "Prefabricated Transformer high voltage to low voltage" (
replaces BS EN 61330) in these facilities use natural gravity ventilation system,
and its.
About company
Electrical Equipment Factory EL-Q Ltd. has been operating since November 1991, as heir to the tradition of the production resulting in the mid seventies Electrical Appliance Manufacturing Plant, which is a Division of the Department of Energy Czestochowa. The company, specialized over the years in making prefabricated medium voltage power distribution equipment, especially the station MV / LV transformer, the first in the country developed the concept, produced and launched containerized transformer station.
We are a precursor to technical solutions not only in the station, but also many other power distribution equipment, which verified the quality and innovation of national power to adopt them, in many cases, the standard in network construction. Our solutions are innovative. The keynote to its development, among other things, the desire to simplify and standardize processes, installation of equipment in the field by minimizing the size and weight of. The company is the only one in Poland, produces concrete case of transformer stations based on proprietary technology, protected by a patent in the Patent Office.
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Recent technical and technological achievement with the family for a station transformer units with a capacity of up to 630 kVA and 1000 kVA. The products used in these innovative, highly efficient natural ventilation system, switch gear installed to guarantee 100% protection against overheating of the heat emitted inside the building. Each unit produced, prior to production, the subject is at the Institute of Power Engineering in Warsaw the full testing of the product with BS EN 62271-202: 2010. The results of laboratory tests and audits conducted by our company are the basis for certification for which reliability must be demonstrated by the following conditions must: - Laboratory tests were carried out by a laboratory accredited by PCA in research prefabricated transformer substations MV / LV - certificate has been issued by the Certification Body, accredited PCA to issue certificates of compliance for prefabricated transformer substations MV / LV.
A method of manufacturing enclosures substation.
Concrete Enclosures our stations transformer and points distribution are made on the basis of patented by our company as siatkobetonu production technique. On prepared reinforcement arranged in form, is sprayed in layers under pressure of concrete prepared in the form of dry mortar. The spray device, gunning, in the last hase before rendering coat shall dry mortar mix with water. The final layer of spray contains plasticizer, so that finishing is obtained with a thickness of 2-3 mm. Shotcrete method raises parameters built of concrete, and particular strength, water absorption and frost resistance. Thickness walls made in the art siatkobetonu is 30 mm at behavior required for housing strength and stiffness. This allows you to a light weight housing and thus the costs associated with their assembly at the construction site are as limited.
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Complete housing is a monolith the foundation, walls and roof and concrete floor of prepared channels for install equipment. The facade is covered with acrylic plaster the agreed color or finish wall plates on request.
Joinery is made of steel anticorrosive and then powder coated. We cover single or composed of several segments. Maximum segment length is 5400 mm, a width 2500 mm.
Development of innovative stations ELQ
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The natural ventilation
The main task of housing the transformer station is to ensure optimum operating conditions for the equipment built inside her. In practice this means that the need to maintain the prescribed temperature rise in the center, regardless of the amount of heat emitted by the transformer working in varying load conditions. Exceeding the temperature inside the transformer station is permissible cause significant shortening of the life of not only the source of heat emission transformer, but also many other equipment items such as LV and MV and even cables. They arise in damage to the transformer, faster aging winding insulation and cables, is accelerating the process of opening the cans SF6 as a result of volume changes and aging of the seals. These phenomena are, in the long term operation of the facility, a potential source of failure of electrical machinery and apparatus, the most sensitive to elevated operating temperature and environment. The only radical measures to prevent excessive temperature rise inside the station is to use an efficient ventilation system. According to PN-EN 62271-202:2007 "Prefabricated Transformer high voltage to low voltage" (replaces BS EN 61330) in these facilities use natural gravity ventilation system, and its performance determines, in the exercise of type tests, the qualified housing the station to one of the classes defined resistance numbers from 5 (best) to 30 (not suitable for transformer stations).
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Type used in garages SOLAR natural ventilation system, no ventilation grilles housing walls (registered with the Patent Office), has enabled the laboratory tests confirmed the enclosure class 5 (increases in temperatures below 5 ° C) at the premises of transformers up to and including l000kVA. Differences temperature rise nominally loaded transformer, set outside the station and the station reached 2.7 ° C for units with a capacity of ó30kVA and 3.4 ° C for the power 1000kVA. This solution enables the stable maintenance of optimum temperature inside the station without the use of unreliable mechanical support so that our products retain the character of unattended objects throughout their life. Super efficient and reliable, by virtue of being its design, natural ventilation system type SOLAR station, has been recognized in the evaluation committee the Pentagon, which has qualified our product as the technical equipment of the U.S. Army during its operations in the Middle East. Should also be noted that the natural ventilation system used for safe gas, produced during arcing inside the station, through the upper outlet slot, located high above the heads of bystanders and three full walls of separation create favorable conditions for fire station location in the.
The method of foundation of transformer stations
Transformer manufacturing EL-Q Ltd. has its own foundation with a separate space which is sealed, concrete Sump. To gain a better stabilization of the foundation and the monoblock in the ground, provides a concrete foot F2, forming a support station building below the freezing point, which, depending on the type of soil is from 80 to 100 cm.
Advantages of the foundation on the feet of concrete -a low cost standard concrete interest in relation to investment dimensional cable bowl, -avoid the cost of buying a sealed cable entry as input cables to the station is the concrete floor suspended 20 cm above the ground -possible approaches to the station introduced cables from any direction, -avoid the costs associated with the maintenance and overhaul of foundation during the operation of the facility
- Anticipate the possibility of making the foundation for the term station installation, -exclusion switchgear corrosion, resulting from the impact of the accumulated water in the dish cable, after extended periods of use, -ease of precise stabilization and leveling several small and relatively lightweight concrete feet, which is unattainable when using heavy and voluminous bowls cable. Below is an example of the foundation course substation consisting of two segments.
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UniSTAT 20/250 The transformer station with external support. Transformer connected without medium voltage switchgear.
Parameters stations voltage concrete solution class housing degree of protection rated peak
y
Dimensions max 24 kV
width depth height weight without transformer
10 IP23C 40 kA
1700 mm 1550 mm 2000 mm 2500 kg
Equipment MV page Low-voltage switchgear Transformers
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The opportunity to approach the cable directly to the terminals of the transformer RNB-Unistat max 250 kVA
y
UniSolar 20/630 The transformer station with external support. Medium voltage switchgear with SF6
Parameters stations voltage concrete solution class housing degree of protection rated peak
y
Dimensions max 24 kV
width depth height weight without transformer
5 IP43 16 kA
2800 mm 2200 mm 2200 mm 4200 kg
y
Equipment MV page Low-voltage switchgear Transformers
8DJH, RM6, SafeRing, GA, Xiria, FBA, CGM Cosmos RNB-Box max 630 kVA
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SOLAR IG 20/630, SOLAR IG 20/1000 Transformer Station with support from the inside. Medium voltage gas-insulated SF6
Parameters stations voltage concrete solution class housing degree of protection rated peak
y
Dimensions max 24 kV
width depth height weight without transformer
5 IP43 16 kA
3000÷ ÷3850 mm 2300 mm 2750 mm 6500 kg
Equipment MV page Low-voltage switchgear Transformers
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8DJH, RM6, SafeRing, GA, Xiria, FBA, CGM Cosmos, SM6, GAE, Uniswitch, SafePlus RNB-1; RNB-2 max 630 kVA, max 1000 kVA
y
SOLAR IP 20/630, SOLAR IP 20/1000 Transformer Station with support from the inside. Medium voltage air insulated
Parameters stations voltage concrete solution class housing degree of protection rated peak
y
Dimensions max 24 kV
width depth height weight without transformer
5 IP43 16 kA
max 5400 mm 2500 mm 2750 mm 10 000 kg
y
Equipment MV page Low-voltage switchgear Transformers
Ma20 (15), MSA-L-24-ELQ, Mq20, EA75(55) RNB-1; RNB-2 max 630 kVA, max 1000 kVA
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Products characteristics ELQ
Safety y - A full range of laboratory tests in accordance with the requirements of BS EN 61330:2001 carried out at the Institute of Power Engineering in Warsaw, - Full protection against the effects of arcing - Complete prefabricated as to preserve the station and fully repeatable parameters to be evaluated in laboratory studies.
Reliabilit y - An innovative system of natural ventilation (class housing 10) filed with the Patent Office for maximum service life of equipment and transformer., - Inability to penetration of water into the station, full protection against corrosion. Economic - Low transport costs and the overall preform assembly (walls + roof + foundation) - Easy location with three full walls separating fire - Multi-directional pin cable through the grommets in the floor above ground level
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Lightnes s - Housing made of concrete thin-walled (thickness 40 mm) produced by independently developed technology protected by patent RP - Tile floors, concrete foundation closed, Protecting the environment - Sealed hard sump which is part of the foundation of the station,
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Composition n - Full of architectural adaptation thanks to the diversity of options overlay roof and plasterwork which is quite acrylic
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ELQ-CITY 20/630 Transformer Station with support from the inside. Medium voltage gas-insulated
Parameters stations voltage concrete solution class housing degree of protection rated peak
max 24 kV
width depth height weight without transformer
5 IP43 16 kA
Equipment MV page Low-voltage switchgear Transformers
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y
Dimensions 2450 mm 2500 mm 2500 mm 7500 kg
y
8DJH, 8DJ20, RM6, SafeRing, GA, Xiria, FBA, CGM Cosmos, TPS, SM6, GAE, Uniswitch RNB-City; RNB-1 max 630 kVA
SOLAR 20/2x1000 Transformer Station with support from the inside. Medium voltage gas-insulated SF6 and air insulated.
Parameters stations voltage concrete solution class housing degree of protection resistance to internal arc
y
Dimensions max 24 kV two-segment 5 IP43 16 kA in 1s
width depth height weight without transformer
max 7500 mm 2300 mm 2750 mm 5000 kg segment
y
Equipment MV switchgear LV switchgear Transformers
8DJH, 8DJ20, RM6, SafeRing, GA, Xiria, FBA, CGM Cosmos,SM6, Ma20(15), EA75(55) 2xRNB-2 2x max 1000 kVA
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SOLAR 20/2x1600 Transformer Station with support from the inside. Medium voltage gas-insulated SF6. Two transformers with a capacity of 1600kVA.
Parameters stations voltage concrete solution class housing degree of protection resistance to internal arc
Dimensions max 24 kV
width depth height weight without transformer
5 IP43 16 kA in 1s
Equipment MV switchgear LV switchgear Transformers
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8DJH, 8DJ20, RM6, SafeRing, GA, Xiria, FBA, CGM Cosmos,SM6 2xRNB-2 2x max 1600 kVA
y 7200 mm 2500 mm 2850 mm 8000 kg segment
y
SOLAR 3x1000 Transformer Station with support from the inside. Medium voltage air-insulated. Three transformers with a capacity of 1000kVA.
Parameters stations voltage concrete solution class housing degree of protection resistance to internal arc
y
Dimensions max 24 kV
width depth height weight without transformer
5 IP43 16 kA in 1s
13250 mm 2500 mm 2850 mm 8000 kg segment
y
Equipment MV switchgear LV switchgear Transformers
Ma20(15), EA75(55) 3xRNB-2 3x1000 kVA
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Ma-20 Switchgear MV air-insulated.
Parameters stations voltage Ir Ir tr Ip Ik Degree of protection
max 24 kV 630A 400A 40A 40kA 16kA IP4X
width depth height weight
Equipment Switches NAL,NALF ABB, Sockets for capacitive voltage detecting system
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y
Dimensions 850 mm 1050 mm 2300 mm 100 kg
y
Station of switchgear MV Support from the inside.
Parameters stations voltage concrete solution
y
Dimensions max 24 kV
width depth height weight without transformer
6100 mm 2500 mm 2700 mm 5000 kg segment
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UniSOLAR 20/630 Transformer Station with support from the outside. Medium voltage air-insulated
Parameters stations voltage concrete solution class housing degree of protection resistance to internal arc
max 24 kV
width depth height weight without transformer
5 IP43 16 kA in 1s
Equipment MV page Low-voltage switchgear Transformers
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y
Dimensions
Ma20-T15 RNB-Box max 630 kVA
2300 mm 2490 mm 2330 mm 3500 kg
y
ELQUSIM 20/630 Station in metal housing with support from the outside.
Parameters stations voltage metal container
y
Dimensions max 24 kV
width depth height without bracket weight without transformer
2400 mm 2800 mm 2400 mm 3500 kg
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Mkb 20/2x1000 Metal casing equipped with skids for building site with gravity ventilation.
Parameters stations voltage metal container
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y
Dimensions max 24 kV
width depth height without bracket weight without transformer
9080 mm 2680 mm 3000 mm 5000 kg
SOLAR 6/1600 Transformer Station with support from the inside. Medium voltage gas-insulated SF6. Transformer with a capacity of 1600kVA.
Parameters stations voltage concrete solution
y
Dimensions max 24 kV
width depth height without bracket weight without transformer
4900 mm 2500 mm 2850 mm 11000 kg
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Major projects
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