Description:
ZW20F -12 outdoor high voltage vacuum circuit breaker (watchdog switch), installed in the responsbility boundary of the overhead distribution line, which is the front end of the user's incoming line, will automatically remove the single- phase ground fault and the phase-to -phase short-circuit fault within the user, avoiding the faults in the user's boundary and the power transmission trunk, and ensuring the safety of the non-faulty users,to improve the reliability of electricity consumption. Accept OEM&ODM:YES Certificate: CE,Test reports Production time: 7~ 12 working days Warranty period: 12 Months Delivery time: 15 days Payment term: 50% deposit before production+50% balance before shipment(by T/T,D/P,Paypal)No. | Item | Unit | Data | |
Rated voltage | KV | 12 | ||
2 | Rated frequency | Hz | 50 | |
3 | Rated current | A | 630 | 1000 |
4 | Rated short circuit breaking curren | KA | 20 | 25 |
5 | Rated peak withstand curreni | KA | 50 | 63 |
6 | Rated short-time withstand curren | KA | 20 | 25 |
7 | Rated short circuit closing current | KA | 50 | 63 |
8 | Rated operating sequence | O-0.3s-CO-180s-CO | ||
9 | Mechanical life | Times | 10000 | |
10 | Rafed current breaking fimes | Times | 10000 | |
11 | Rated short circuit breaking times | Times | 30 | |
12 | power frequency withstand voltage (1 min) (Wet)phase to phase,to earth | KV | 34 | |
power frequency withstand voltage (1 min) (Dry\phase to phase,to earth/between open contacts | KV | 42/48 | ||
13 | Lightning impulse withstand voltage phase to phase,to earth/between open contacts | KV | 75/85 | |
14 | Secondary circuit 1 min power frequency withstand voltage | V | 2000 | |
15 | Weight | kg | About 140 | |
16 | Clearance between open contacts | mm | 9 | |
17 | Contact contact stroke | mm | 3 | |
18 | Average closing speed | m/s | 1.2±0.2 | |
19 | Average opening speed | m/s | 0.6±0.2 | |
20 | Rafed operafing volfage | V | AC/DC220 | |
21 | SF6 gas rated pressure (gauge pressure | MPa | 0 |