Specification:1000-1200 USD/PIECEUse Parts:1 PIECESupply Ability:1000 PIECEPort:Ningbo or ShanghaiPayment Terms:TT , LC , OthersPlace of Origin:Hang Zhou,China
VD9-12 Indoor Permanent Magnetic Vacuum Circuit Breaker
VD9-12 type indoor permanent magnetic vacuum circuit breaker is main switchgear to control and protect distribution system of network industrial enterprises, our patented CDY permanent magnetic operating mechanism is cooperated with breaker, and direct driving system makes this type of breaker more excellent, specially suitable for frequently switching, or breaking short circuit for many times.A special carries provided for breaker, forms carrier type breaker system.
Main Technical Parameters
Item | Description | Unit | Data | |||
1 | Rated voltage | KV | 12 | |||
2 | 1min Power frequency withstand voltage | 42 | ||||
3 | Lightning impulse withstand voltage(peak) | 75 | ||||
4 | Rated frequency | Hz | 50 | |||
5 | Rated current | A | 630 1250 | 630 1600 2500 | 1250 2000 3150 | |
6 | Rated short circuit breaking current | KA | 20 | 25 | 31.5 | 40 |
7 | Rated short circuit withstand current | 20 | 25 | 31.5 | 40 | |
8 | Duration of rated short circuit current | S | 4 | |||
9 | Rated peak withstand current | KA | 50 | 63 | 80 | 100 |
10 | Rated short circuit making current | 50 | 63 | 80 | 100 | |
11 | 1min Power frequency withstand voltage on secondary circuit | V | 2000 | |||
12 | Rated single/back capacitor bank breaking current | A | 630/400(40KA:800/400) | |||
13 | Rated capacitor bank making current | KA | 12.5 | |||
14 | Opening time | ms | ≤50 | |||
15 | Closing time | ≤70 | ||||
16 | Mechanical life | time | 30000 | |||
17 | Nos of breaking rated current | 30000 | ||||
18 | Nos of breaking rated short circuit breaking current | 50 | ||||
19 | Permissible abraded thickness of moving, static contacts | mm | 3 | |||
20 | Opening distance of contact | 9±1(1600A:11±1) | ||||
21 | Over travelling distance contact | 3.5±0.5 | ||||
22 | Jumping time of contact at closing | ms | ≤2(40KA≤3) | |||
23 | Asynchrony of three phase opening, closing | ≤2 | ||||
24 | Average opening speed | m/s | 0.9~1.2 | |||
25 | Average closing speed | 0.5~0.8 | ||||
26 | Rebound height of contact opening | mm | 0 | |||
27 | Ressistance of main circuit | μΩ | ≤40(Below1250A) | |||
≤35(1600~2000A)≤25(Over2500) | ||||||
28 | Contacting pressure at closing contact | N | 2000±200(20KA)2400±200(25KA) | |||
3100±200(31.5KA)4300±200(40KA) | ||||||
29 | Rated operating sequence | off-0.3S-on/off-180s-on/off |
Note: Please contact the factory to confirm the latest parameters
Outline and installation dimension