ZW8 series Automatic Circuit Recloser
ZW8-12 series outdoor HV vacuum automatic circuit reclosers (short for break)be used for switching on/off load current, overload current and short circuit currnt in three-phase power systems with AC 50Hz and rated voltage 12kV. Matching with recloser controllers, the breaker can identify current characteristics and realize repetitious autoeclosing or permanent fault isolation. With its own PT power, it becomes an intelligence breaker having controlled voltage and current signal output. With electronic PT power, it provides three segment compound protection of over current time delay, rush current time delay and short circuit quick break.
Technical Data
No. | Item | Unit | Data | ||
1 | Rated voltage | kV | 12 | ||
2 | Rated current | A | 630、1000、1250 | ||
3 | Rated insulation level | 1min power frequency withstand voltage | Dry | kV | 42 |
Wet | 34 | ||||
Lightning impulse withstand voltage (peak) | 75 | ||||
4 | Rated frequency | Hz | 50 | ||
5 | Rated short-circuit breaking current | kA | 12.5、16、20 | ||
6 | Breaking times of rated short-circuit breaking curren | :Time | 30、31.5、50 | ||
7 | Rated short-circuit making current ( peak) | kA | 31.5、40、50 | ||
8 | Rated peak withstand current | ||||
9 | Rated short-time withstand current | 12.5、16、20 | |||
10 | Rated short-circuit current duration | s | 4 | ||
11 | Rated operating order | O-0.3s-CO-180s-CO | |||
12 | Mechanical life | Time | 1000 | ||
13 | Rated operating voltage | V | AC/DC220 | ||
14 | Over current trip rated current | A | 5 | ||
15 | Weight | Kg | 160 | ||
