CAST RESIN TRANSFORMERS CRT ED.: DEC.13 REV.00 1
HISTORY INESING SRL is a dynamic and modern company, very well known in the design and production of dry type (cast resin ) transformer up to 36kV -10MVA, Since its creation has dedicated itself to design, supply and start-up of power and distribution transformers for application in industrial systems especially oriented to the generation, off-shore application, transmission and distribution of Electrical Power. In 1999 was founded INESING-KOS by Eng. Sami Sejdaj in San Fior (Treviso) Italy. INESING-KOS started givin technical consultancy in the designing of: - Power and distribution transformers - Furnace and special transformers - Ovens transformers and for special applications INESING-KOS was also, supplier of: - Electrical equipment, like outdoor Circuit Breakers and disconnectors - Switchboard and switchgear HV, MV and LV - Shelters, lighting pole and urban and industrial solar lighting
INESING-KOS has expanded its horizons devoting his efforts to the design, supply and commissioning of complete electrical cabinet, also oriented to the generation, transmission and distribution of electricity. In the last years, INESING-KOS has concentrated his activities putting a lot of efforts on renewable energies projects. Not only photovoltaic and wind mill, but also hydroelectric and biomass. These development have led to the birth of the company INESING SRL in 2012.
Operative and Administrative office: Inzago Milano Headquarter: San Fior Treviso Operative office: Verona
OUR BRANCHES CRT Ed. 2014 rev.0 5
INZAGO factory Total area: Covered area: 2000 mq 500 mq PRODUCTION: Transformers for medium and low voltage distribution and for special applications: -> Up to 5 MVA and 36 kv, fluid insulated -> Dry type transformers up to 5 MVA and 36 kv -> Special rectifier, furnace transformers and reactors
TECHNICAL SPECIFICATION TRANSFORMERS
TECHNICAL SPECIFICATION TRANSFORMERS
TECHNICAL SPECIFICATION ENLOSURE
General specification for three-phase Cast Resin Transformers HV/LV Power 50 to 3150 kva 12/24/36kV Three-phase transformers of cast resin type, class F insulation system with natural (AN) cooling for indoor installation, are destined for use in three-phase HV/LV distribution systems. If required we offer forced cooling (AF) to increase the rated power up to 30%. On request, the initial guarantee We can extended to 5 years, subject to validation of the first commissioning procedure, as advised by the supplier. Our Transformers are in compliance with the following standards: - IEC 60076-11 - pren 50541-1 - Specific Standards according to country requests Our Transformers are manufactured in accordance with: - a quality system in conformity with ISO 9001-2008 - an environmental management system in conformity with ISO 14001, both certified by an official independent organisation.
Magnetic core The magnetic are made from laminations of insulated silicon steel, and protected against corrosion with a coat of varnish. In order to reduce the power consumption due to transformer no-load losses, the magnetic core is stacked using overlapping-interlocking technology. In order to reduce the noise produced by the magnetic core, it is equipped with noise-damping devices. LV windings The LV winding is produced using aluminium or copper foils (according to the manufacturer s preference) in order to cancel out axial stress during short circuit ; this foil will be insulated between each layer using a heat-reactivated class F pre-impregnated epoxy resin film The ends of the winding are protected and insulated using a class F insulating material. The whole winding assembly will be polymerised throughout by being autoclaved for 2 hours at 130 C, which will ensure: - High level of resistance to industrial environments - Excellent dielectric withstand - Very good resistance to radial stress in the instance of a bolted short circuit. HV windings They are separated from the LV windings to give an air gap between the MV and LV circuits in order to avoid depositing of dust on the spacers placed in the radical electrical field and to make maintenance easier. These are made of aluminium or copper wire or foil (according to the manufacturer's preference) with class F insulation. The HV windings are vacuum cast in a class F fireproof epoxy resin casting system composed of: - an epoxy resin - an anhydride hardener with a flexibility additive - a flame-retardant filler. The flame-retardant filler arethoroughly mixed with the resin and hardener. It is composed of trihydrated alumina powder (or aluminium hydroxide) or other flame-retardant products to be specified, either mixed with silica or not. The casting system are of class F. The interior and exterior of the windings are reinforced with a combination of glass fibre to provide thermal shock withstand
MV winding support spacers These will provide sufficient support in transport, operation andduring bolted short circuit conditions as well as in the case of an earthquake. These spacers are circular in shape for easy cleaning. They will give an extended tracking line to give better dielectric withstand under humid or high dust conditions. These spacers will include an Elastomer cushion that will allow it to absorb expansion according to load conditions. This Elastomer cushion are incorporated in the spacer to prevent it being deteriorated by air or UV. HV connections The HV connections are made from above on the top of the connection bars. Each bar are drilled with a 13 mm hole ready for connection of cable lugs on terminal plates. The HV connection bars are in rigid copper bars protected by heat shrinkable tubing. HV connections in cables are not allowed, in order to avoid all risk of contact, due to cables flapping. The HV connections are in copper. LV connections The LV connections are made from above onto bars located at the top of the coils on the opposite side to the HV connections. Connection of the LV neutral will be directly made to the LV terminals between the LV phase bars. The LV connection bars are in copper or in tinned aluminium (according to preference of the manufacturer). The output from each LV winding will comprise a tin-plated aluminium or copper connection terminal, enabling all connections to be made without using a contact interface (grease, by-metallic strip: out of scope of supplying). These are assembled according to current practices, notably using spring washers under the fixings and nuts. Devices in the 630 to 2500 kva range are easy to connect using factory-built electrical ducting through an optional interface. Stress withstand in the instance of a bolted short circuit on the connector will be guaranteed by the manufacturer. HV tapping The tapping which act on the highest voltage adapting the transformer to the real supply voltage value, are off-circuit bolted links. Tapping with connection cables are not allowed. These bolted links are attached to the HV coils.
Accessories and standard equipment These transformers will be equipped with: - 4 flat bi-directional rollers - lifting lugs - haulage holes on the undercarriage - 1 earthling terminals - 1 rating plate - 1 "Danger Electricity" warning label (T 10 warning) - 1 routine tests certificate - 1 instruction manual for installation, commissioning and maintenance in English. Thermal protection These transformers will be equipped with a thermal protection device which will comprise: 3 thermal detection systems (1 by phase), installed in the active part of the transformer. The sensors will be placed in a tube to enable them to be replaced if ever necessary. An electronic converter with two independent monitoring circuits equipped with a changeover switch, one for "Alarm 1" the other for "Alarm 2". The position of the relays will be indicated by different coloured indicator lights. A third indicator light will indicate the presence of voltage. These three indicator lights will be on the front of the converter. The electronic converter will be installed away from the transformer. A plug-in terminal block for connection of the sensors to the electronic converter. The sensors will be supplied assembled and wired to the terminal block fixed on the upper part of the transformer. The converter will be supplied loose with the transformer, packaged complete with its wiring diagram.
Metal enclosure On request, our transformers will be equipped with a metal enclosure for indoor installation comprising an integral IP 31 metal enclosure, that can be dismantle on request, with: On request specified in the annex, our transformers can be supplied mounted equipped with protective metal enclosure: - either for indoor installation, with degree of protection IP 31 (except the bottom which may be IP 21), - or for outdoor installation with degree of protection IP 35 (except the bottom which may be IP 31). This outdoor installation will require some adjustments related to weather and environmental extremes of the place. These enclosures will not be dismantled (if requested, it can be dismantled) with: - an anti-corrosion protection in the manufacturer's standard colour - lifting-lugs enabling the transformer and enclosure assembly to be handled. - a bolted access panel on the enclosure front to allow access to the HV connections and to the tapping. This are fitted with handles; it will have one "Danger Electricity" warning label ( T10 warning), a rating plate and a visible braid for earthling. - blanked off holes for fitting on the bolted access panel to enable it to be locked. - 2 undrilled gland plates on the roof: one on the HV side, one on the LV side (drilling and cable gland not supplied). - 1 plate at the right HV side on the bottom of the enclosure for the HV cables for connections from the bottom. - as an option, a HV cables clamping system shall be provided when the cables are coming from the bottom
TECHNICAL SPECIFICATION ENLOSURE
ASSEMBLY WORKSHOP CRT Ed.: dec.13 rev.00 16
WINDING WORKSHOP CRT Ed.: dec.13 rev.00 17
GEOGRAPHICAL DESTINATION OF OUR PRODUCTS. Mondo 30% Italia 45% Europa 25% CRT Ed.: dec.13 rev.00 18
MANUFACTURED TRANSFORMERS TYPE. SHARE % CAST RESIN 35% OIL FILLED 40% DRY TYPE 20% FURNACE 5% OIL FILLED FURNACE DRY TYPE CAST RESIN CRT Ed.: dec.13 rev.00 19
MIGLIAIA TURNOVER PROGRESS LAST 3 YEARS 700 600 500 400 300 200 100 0 2011 2012 2013 OIL FILLED 450 600 700 FURNACE 100 150 180 DRY TYPE 200 150 100 CAST RESIN 300 450 500 CAST RESIN DRY TYPE FURNACE OIL FILLED
ORGANIZZATION CHART INESING SRL FACTORY MANAGER Quality / Test Room Administration Engineering Production / Planning Commercial Purchasing Assembly workshop Winding Workshop CRT ED.: DEC.13 REV.00 21
STAFF DEPARTMENT Factory Management 1 Administration 2 Engineering 9 Quality Test room 3 Purchasing 4 Production / Planning 2 Commercial / P.M. 5 Prod. / Assembly workshop 20 Prod. / Winding workshop 7 Total: 26 27 CRT ED.: DEC.13 REV.00 22
PHOTO SHOW
INESING JOB CRT Ed.: dec.13 rev.00 24
INESING JOB CRT Ed.: dec.13 rev.00 25
INESING JOB CRT Ed.: dec.13 rev.00 26
INESING JOB CRT Ed.: dec.13 rev.00 27
FINAL CONTROL AND LOGISTIC AREA CRT ED.: DEC.13 REV.00 28
THE QUALITY INSURANCE CERTIFICATE AND OUR PRINCIPAL CONTACT Headquarter: Via Campardo basso 17 31020 San Fior TV Italy Ph.: +393478311318 fax: +3904381890521 E-mail: info@inesing.com Operative and administrative office: Strada Padana Superiore 38 20065 Inzago MI Italy Ph.: +390295314161 fax: +390273960628 Web: www.inesing.com
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