| 摘要 |
FIELD: electricity. ^ SUBSTANCE: invention may be used in three-phase a.c. distribution grids with voltage 6(10) kV and frequency 50(60) Hz and neutral being insulated and grounded through ground-fault neutraliser. This chamber consists of metal structures, bus bar elements, secondary connection circuits, power switch, current transformers and breaker. The circuit breaker is comprised of current-conductive interruption keys with base insulator drive mechanism and bushing insulator with current-conductive buses and installed so that its bushing insulators with current-conductive buses are the elements of combined chamber buses. Besides the chamber is provided with low power transformer, having primary winding connected at combined buses voltage for supplying power to secondary connection circuits of the chamber. The said transformer may be installed at the angle to horizontal plane. ^ EFFECT: reduced dimensions, simplified structure and dependent power supply of secondary connections circuits. ^ 2 cl, 2 dwg |
