JPS6464510A - Wiring method of distribution line having normal open switchgear at joint of loop - Google Patents

Abstract

PURPOSE:To prevent temporal power interruption due to wiring work in rear section of working position, by throwing in an instantaneous switchgear upon power interruption of one distribution line. CONSTITUTION:An instantaneous switchgear 7 is connected under open state in parallel with a loop switchgear 4. Then manual switchgears S1, S2 in working section 5 are opened and separated from a distribution line 3. Upon throw-in of the instantaneous switchgear 7, a normal open loop point transfers from the loop switchgear 4 to the manual switchgear S2, and power is fed reversely from a distribution line 2 through the instantaneous switchgear 7 to the rear of the manual switchgear S2 in the distribution line 3. Then wiring work is carried out in the work section 5, and upon finish of work, the loop switchgear 4 is thrown in manually so as to separate the instantaneous switchgear 7. The separated switchgear 7 is connected in parallel with the manual switchgear S2 and the manual switchgear S1 is closed. Since the instantaneous switchgear 7 is thrown in upon opening of the loop switchgear 4, the normal open loop point transfers reversely from the position of the manual switchgear 52 to the original loop switchgear 4 thus bringing the distribution line 3 into normal transmitting condition.