Trihal cast resin dry type transformers (ENG) - Trinet

HV/LV distribution transformersTRIHAL cast resin transformers160 to 3150 kVAinsulation level 24 kV - low voltage 400 VISO 9001AFAQ N 1990/113bdescriptionThis range comprises transformers in accordancewith the following specifications: 50 Hz three-phase transformers for indoorinstallation (outdoor installation or otherfrequency on request); cast resin dry type; thermal class F; ambient 40°C, altitude 1000m (1) ; natural air cooling type AN; LV winding usually made of aluminium sheet(insulated strip for low ratings). The core and LVwindings assembly is given an additionalprotective coating of alkyd resin; HV winding manufactured from insulatedround wire or rectangular strip; HV winding is vacuum cast in epoxyresin (2) efficiently fireproofed with trihydratedalumina;TRIHAL transformers can be supplied: without enclosure (IP00).The installer must ensure that access to the livecore and windings is prevented (3) ; with IP31 metal enclosure.It prevents direct contact with live components.standardsThese transformers are in accordance withstandards: IEC 76-1 à 76-5; IEC 726 (1982); CENELEC (European Committee for Electrotechnicalstandardization) harmonizationdocuments HD 538-1 S1:1992 and HD 464 S1:1988 / A2: 1991 /A3:1992 concerning dry typetransformers.standard equipmentTRIHAL without enclosure (IP00): 4 flat bi-directional rollers; 4 lifting holes; haulage holes on the underbase; 2 earthing points; 1 rating plate (on HV side); 1 warning label“electricity danger”; HV voltage variation by off circuit tappinglinks; HV connection bars for connection fromabove;LV pre-drilled terminations on above; 1 routine test certificate and 1 instructionleaflet for installation commissioning andmaintenance;TRIHAL with IP31 metal enclosure: TRIHAL without enclosure (IP00) as above; IP31 integral metal enclosure (except thebottom: IP21): with standard anti corrosion protection; lifting lugs for transformer and enclosureassembly; access to tappings on the HV side byremoving a bolted panel which is fitted withhandles, warning label, rating plate and avisible braid for earthing; blanked off holes provided for fitting RonisELP1 or alternatively Profalux P1 locks on theHV tapping access panel; 2 gland plates, one on the HV and one on theLV side. These may be removed and drilled totake cable glands which are not supplied; 1 flap door in the base on the HV side topermit HV cable entry. Connection made to topof delta bars.optionsThe following fittings can be provide: 1 thermal protection module comprising6 PTC thermostatic sensors (2 per phase)connected to a terminal board with a plug-inconnector and an electronic converter with 2contacts (alarm 1 and alarm 2) suppliedseparately; 3 HV plug-in connectors (HN 52 S 61) maybe used as follows: fixed on a mounting plate from the uppercore clamp (TRIHAL IP00); fixed on top of the transformer enclosure onthe HV side (TRIHAL IP 31); straight or elbow connectors can also besupplied. Please state cable characteristics; additional LV terminal plates (tinned copper); 1 locking device to secure plug-in bushings(without lock and indiscriminitely suitable for aRonis EPL11AP, ELP1, ELP2 or Profalux P1,P2, V1, V21 lock mounting); forced cooling by fans to give an AF ratingof 140%.Nota: These options are those usuallyspecified and many alternatives can beprovided on request.250 kVA (IP00) 20 kV/400 V +400 kVA (IP31) 20 kV/400 VLV pre-drilled terminations630 kVA - 20 kV/400 V(1) Please state when ambient > 40°C or altitude > 1000 m.(2) a casting system developped and patented by FranceTransfo.(3) when the transformer is energized, the winding resin coatingand the heat shrinkable protection of the HV connectionbars do not ensure any protection against touch.