Description:
It uses vacuum arc extinguishing and SF6 gas as the insulating medium, and is an improved product of ZW20 -12 type on-column vacuum circuit breaker. ZW20A-12 outdoor on- -column vacuum circuit breaker is a maintenance- -free product, which is the best among the on-column circuit breakers. This product matches the controller and has excellent recloser function to meet the requirements of distribution automation system. 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 | ||
1 | Rated voltage | KV | 12 | ||
2 | Rated frequenc | Hz | 50 | ||
3 | Rated current | A | 630 | 1000 | |
4 | Rated short circuit breaking current | KA | 20 | 25 | |
5 | Rated peak withstand curren | KA | 50 | 63 | |
6 | Rated short-time withstand currenl | KA | 20 | 25 | |
7 | Rated short circuit closing current | KA | 50 | 63 | |
8 | Rated operating sequence | O-0.3s-CO-180s-CO | |||
9 | Rated short circuit duration | S | 4 | ||
10 | Mechanical life | Times | 10000 | ||
11 | Rated current breaking times | Times | 10000 | ||
12 | Rated short circuit breaking times | Times | 30 | ||
13 | Power frequency withstand voltage(1 min) | (Wet)phase to phase,to earth | KV | 34 | |
(Dry)phase to phase,to earth/between open contacts | KV | 42/48 | |||
14 | Lightning impulse withstand voltage phase,earth/between open contacts | KV | 75/85 | ||
15 | Secondary circuit 1 min power frequency withstand voltage | V | 2000 |