发布需求
江苏 无锡市| 品牌：GTVAC、德森克 | 型号：RP177B 、ZKJ-7.2/450(ZKJ74-01) | 额定电压：7200（V） |
| 额定电流：450（A） | 机械寿命：100（万次） | 电寿命：100（万次） |
CERAMIC VACUUM INTERRUPTER FOR CONTACTOR ZKJ-7.2/450(ZKJ74-01)
Reference Model：RP177B
BOTTLES PROFILE
The vacuum interrupter is a ceramic housing
vacuum interrupter with end-seal construction, using
one-time tube sealing and exhausting technique.
Its contacts, made of Ag(40)WC material. It has
the advantages of small size as well as no risk of
explosion and on pollution. It can be used in the
electric power and metallurgical , mine and
chemical department to control and protect the
transmission and distribution system.It is especially
suited for use in the places where it is operated
frequently and operates inductive lOAd.
Mechanical Data Required for the Matched Vacuum Switchgear:
Specifications of Vacuum Interrupter | ||
Item | Unit | V alue |
Rated voltage | kV | 7.2 |
Rated current | A | 450 |
Rated frequency | Hz | 50/60 |
Short time power frequency voltage (1min) | kV | 20 |
Lightning impulse withstand voltage | kV | 60 |
Rated breaking current | A | 450 |
Limit breaking current (10 OPS Rate Gap, voltage) | A | 6000@7.2kV |
Rated withstand current (peak) | kA | 4 |
Rated short circuit making current | kA | 4 |
30 Second Current Carry | A | 2000 |
Half Cycle Current Carry (peak) | kA | 55 |
Mechanical endurance | Cycles | 1000000 |
Load switching at rated current and gap | Cycles | 106 |
Clearance between open contacts | mm | 4.8±1 |
Contact closing force due to bellow and atmosphere | N | 70±25 |
Force required to hold contacts open at full stroke | N | 100±30 |
Time-limited circuit resistance at Min. rated compressive force(120N) | μΩ | ≤30 |
Contact limit erosion | mm | 1.5 |
Gas pressure inside vacuum interrupter | Pa | ≤1.3&tiMES;0.001 |
Weight of moving parts | kg | 0.3 |
Interrupter weight | kg | 1.3 |
Shelf Life | Year | 20 |
Mechanical Data Required for the Matched Vacuum Switchgear | ||
Item | Unit | V alue |
Clearance between open contacts | mm | 4.8±1 |
Average opening speed | m/s | 0.4±0.15 |
Average closing speed | m/s | 0.2±0.1 |
Rated compressive force of contact | N | 120±10 |
Contact bouncing duration at closing operation | ms | ≤3 |
Out of simultaneity of contact closing and opening | ms | ≤1 |
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