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400kV nominal rating 478MW continuous at the receiving end.We already use it in the Bass link, @Smurf1976 will give us the voltage/ current details, no doubt.
Loss is 4.4% at full load, considerably less at lower loading.
Physical connection runs from Loy Yang (Victoria) to George Town (Tasmania) with connection to the 500kV AC network on the Victorian side and to the 220kV AC network in Tasmania. In both cases this is the core transmission "backbone" in each state.
No longer the case but it was the longest undersea power cable in the world when originally built (construction 2003 - 05).
There's also two onshore DC links in Australia:
Murraylink (Berri (SA) - Mildura (Victoria)) is 150kV and 220MW capacity. Due to transmission limitations on the AC network in Victoria full capacity is frequently unachievable in practice indeed a situation of forced export Vic > SA via Murraylink is common as the only means of achieving full output from solar farms in NSW Victoria. AC connection is to the 132kV network on the SA side and 220kV on the Victorian side.
Directlink (Bungalora (Qld) - Mullumbimby (NSW) is 80kV and 180 MW. AC connection is at 110kV on the Qld side and 132kV on the NSW side.
The SA - Vic and NSW - Qld DC lines are electrically parallel to dual circuit AC interconnection between those states. The AC lines connect to different physical locations, and at different voltages (275kV - 500kV for SA - Vic and 330kV for NSW - Qld) but ultimately they're electrically in parallel to the DC albeit via various transformers and other transmission line within each state. In contrast Basslink is the sole interconnection between Tasmania and anywhere else.
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