Huyvinh37
Junior Member
To determine the reaction of the distance protection during closure of the
circuit breaker onto a dead fault, the parameter in address 1232 SOTF zone is
used. The setting Tnactive specifies that there is no special reaction, i.e. all
distance stages operate according to their set zone parameters. The setting Zone
ZIB causes all faults inside the overreaching zone Z1B (in the direction
specified for these zones) to be cleared without delay following closure of the
circuit breaker. If Z1B undirect. is set, the zone Z1B is relevant, but it acts in both
directions, regardless of the operating direction set in address 1351 or 1451 Op.
mode Z1B. This setting option only exists for the polygon characteristic. The
setting PICKUP implies that the non-delayed tripping following line
energization is activated for all recognized faults in any zone (i.e.with general
fault detection of the distance protection).
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circuit breaker onto a dead fault, the parameter in address 1232 SOTF zone is
used. The setting Tnactive specifies that there is no special reaction, i.e. all
distance stages operate according to their set zone parameters. The setting Zone
ZIB causes all faults inside the overreaching zone Z1B (in the direction
specified for these zones) to be cleared without delay following closure of the
circuit breaker. If Z1B undirect. is set, the zone Z1B is relevant, but it acts in both
directions, regardless of the operating direction set in address 1351 or 1451 Op.
mode Z1B. This setting option only exists for the polygon characteristic. The
setting PICKUP implies that the non-delayed tripping following line
energization is activated for all recognized faults in any zone (i.e.with general
fault detection of the distance protection).
Nhờ mọi người giúp ạ
