100kva 3 phase Railway transformer project
VPI varnish impregnation ( varnish with vacuum)
Dry type txf 400V to 208V ph. –ph.
Dyn11 With output MEN point 50HZ
With electrostatic screen between primary and secondary windings, Copper windings, Indoor application
At the Tortech High Voltage Lab in Sydney, we are performing detailed testing on special dry-type 35kV bushings to assess their performance and reliability under
3 phase 415/6v 4000A 50hz.Input voltage is controlled by three single phase 20kva 240-270v 50hz 80A variacs.This is a unique design using single turn copper
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Item 1 – Cast Resin type Isolation Transformer | HV Winding 1 | LV Winding 1 | LV Winding 2 | |
Rated power | kVA | 315 | 1250 | 1250 |
Rated voltage | kV | 33 | 0.48 | 0.48 |
Frequency | Hz | 50 | ||
Off circuit tapping links | % | ±2.5%, +-5% | Nil | Nil |
Connection | Delta | Star | Star | |
Vector group | Dy11y11 | |||
Insulation level (Maximum BIL/AC) | kV | 150/70 | 10/3 | 10/3 |
Winding material | Aluminium cast windings in quartz filled self-extinguishing epoxy resin | Aluminium cast windings in quartz filled self-extinguishing epoxy resin | Aluminium cast windings in quartz filled self-extinguishing epoxy resin | |
Type of winding | Vacuum Resin Cast | Vacuum Resin cast | Vacuum Resin cast | |
Standard | AS 60076-11, AS 2374 | |||
Installation | Indoor | |||
Degree of protection | IP22 | |||
Type of cooling | AN/AF | |||
Installation altitude | < 1000 a.m.s.l | |||
Climatic/environmental And fire behaviour class | E2-C2-F1 | |||
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