HOME BUSINESS NEWS OFFER JOB CONTACT PL EN DE RU HOME OFFER TRANSFORMERS AND CHOKES OIL EARTHING TRANSFORMERS OIL EARTHING TRANSFORMERS TRANSFORMERS AND CHOKES OIL EARTHING TRANSFORMERS DRY EARTHING TRANSFORMERS OIL EXTINGUISHING CHOKES DRY EXTINGUISHING CHOKES SHORT-CIRCUIT CHOKES TRANSFORMERS FOR MINING FOR FLAMEPROOF ENCLOSURES AUTOTRANSFORMERS SPECIAL TRANSFORMERS COMPENSATING CHOKES RESIN TRANSFORMERS IN VACUUM TECHNOLOGY RESEARCH AND MEASUREMENTS POST-WARRANTY SERVICE RENOVATIONS WIND FARMS ENCLOSURES Earthing transformers are used to obtain an artificial neutral in resistor earthed or compensated networks. These are three-phase transformers and during operation without an earth fault, they are used to supply the station's own needs. The transformer windings are made in the ZNyn11 system, which in the event of a fault (earth fault) enables the distribution of the short-circuit current into all phases, reducing its value in the damaged line. The secondary winding can work permanently under the rated conditions even if the primary winding is loaded with compensating current. In the case of networks grounded by a resistor, the neutral point of these devices is connected to the grounded resistor used for forcing the active component. In compensated networks, it is usually combined with a quenching choke, which is designed to introduce an appropriate reactance to the system in order to extinguish the arc and compensate for earth fault currents. At the customer's request, it is possible to make 315 kVA auxiliary power, and for other voltage values and for other compensation current ranges. The transformer can be made for rated MV: compliant with the Standard: 6, 10, 15, 20 kV or other (in the range 1-37 kV). It is possible to make a transformer equipped with connector bushings, as well as delivery with additional accessories such as: connector heads, surge arresters, transformer terminals and anti-vibration pads. read more... An example of a transformer is presented above. Units with other parameters are made after individual arrangements with the client. Manufacturing, testing and tolerances according to PN EN 60076-1, PN EN 60289. CONTACT: Trafta Sp z o. O ul. May 1 152 42-300 Myszków Poland +48 34 313 23 51 marketing@trafta.pl TTZDG 1250 / 6P TSZ 40/10 ENCLOSURES SITE MAP NEWSLETTER RECOMMEND THE SITE COPYRIGHT: TRAFTA IMPLEMENTATION: INTERACTIVE AGENCY WMC