A high power electrical distribution system for distribution high power to at least one consumer arranged on a rotatable element, characterised in that said distribution system comprises: at least one high frequency alternating current HFAC generator configured to generate HFAC, a rotary power transformer connected to said at least one HFAC generator, wherein said rotary power transformer includes a stationary part and a rotatable part, and is configured to receive HFAC from said at least one HFAC generator, and to couple HFAC electrical energy from said stationary part to said rotatable part, at least one high power distribution bus located on said rotatable element, and configured to receive HFAC from said rotary power transformer and to distribute HFAC to said at least one consumer, at least one power converter arranged on said rotatable element, and configured to receive HFAC from said at least one high power distribution bus, and to convert said received HFAC to an electrical power form suitable for said at least one consumer, wherein said rotatable element is a radar antenna, and said at least one consumer is a phase shifter, a phase shifter controller, a receiver amplifier, a transmitting power amplifier or an auxiliary control or signal processing device, wherein said at least one power converter comprises a transformer unit or a transformer/rectifier unit configured to supply transformed AC or DC to said at least one consumer, wherein said rotatable element is a rotating radar antenna of a phased-array radar system, wherein said rotatable element includes one or more separate consumers, and wherein the rotary power transformer is configured to provide an HFAC output of at least 1 kW to said at least one high power distribution bus. at least one high frequency alternating current HFAC generator configured to generate HFAC, a rotary power transformer connected to said at least one HFAC generator, wherein said rotary power transformer includes a stationary part and a rotatable part, and is configured to receive HFAC from said at least one HFAC generator, and to couple HFAC electrical energy from said stationary part to said rotatable part, at least one high power distribution bus located on said rotatable element, and configured to receive HFAC from said rotary power transformer and to distribute HFAC to said at least one consumer, at least one power converter arranged on said rotatable element, and configured to receive HFAC from said at least one high power distribution bus, and to convert said received HFAC to an electrical power form suitable for said at least one consumer, wherein said rotatable element is a radar antenna, and said at least one consumer is a phase shifter, a phase shifter controller, a receiver amplifier, a transmitting power amplifier or an auxiliary control or signal processing device, wherein said at least one power converter comprises a transformer unit or a transformer/rectifier unit configured to supply transformed AC or DC to said at least one consumer, wherein said rotatable element is a rotating radar antenna of a phased-array radar system, wherein said rotatable element includes one or more separate consumers, and wherein the rotary power transformer is configured to provide an HFAC output of at least 1 kW to said at least one high power distribution bus.