FIELD: devices for selective protection from one-phased and multi-phased short circuits of electric cable network with isolated neutral.
SUBSTANCE: device contains network generator, distribution device of cable line groups, a load, isolation state control organ made on basis of zero series voltage filter and capacitor, coupled into circuit between isolated neutral of generator and ground and grounded on short-term basis by executive organ in case of network damages.
EFFECT: simplification of device, improved metrological characteristics and reliability characteristics thereof.
3 cl, 1 dwg
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|---|---|---|---|
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SU714559A1 |
