Description:
1.ZKTD630/7.2-6.3 vacuum interrupter2.Free painting technology
3.once Seal-Exhaust Technique
4.316L Stainless steel
ZKTJ630/7.2-6.3 VacuumInterrupter For Contactor
ZKTJ250/7.2-2.5
ZKTJ400/7.2-4
ZKTJ630/7.2-6.3
Why tochoose Feite?
Products andtechnology of our company
Our company has developed1.14kv-40.5kv vacuum switch tubes of more than 100 types, which canbe widely used for various vacuum circuit breakers, contactors andload break switches.
Component and materialsupply
1.metalized ceramic: The density ismuch higher than injection molding, so the welding ability isgreat.
2.Contact terminal: High qualityimported CuCr25, CuW
3.Bellows: 316L Stainless steel,easy-welding and environmental friendly, which is much better thancommon 304 and 321.
Production control and technicalinnovation
1. The production procession hasadopted advanced control technology, to eliminate discrete andensure consistency of product quality and improve product qualifiedrate.
2. Each batch of bellows can only beput into production after passing 10 million times of life testafter mechanical forming. Also, metalized ceramic are 100%non-leakage required during the air tightness test and the sealstrength is over 5000N.
3. Oxygen-free copper ringtransition in sealing structure has solved problems such as lowseal intensity and tube easy-breaking, so that the product life isgreatly enhanced.
4. Free painting technology: Currentdomestic product with spray paint on the stainless steel surfacewill cause a certain degree of pollution. To solve this problem, weuse special microelements solder materials to prevent it fromdispersed around product surface, which is natural, beauty andenvironmental friendly.
5. once Seal-Exhaust Technique: Allthe components will be assembled in the once Seal-Exhaust furnacein one time. Thus, production process has been optimized .Also,duplication and pollution can be avoided effectively. Thistechnique has filled our domestic blank.
1) Main Technical Data
| MainTechnical Specification | Unit | Specification |
| Ratedvoltage | kV | 7.2 |
| Ratedcurrent | A | 250/400/630 |
| Ratedfrenquency | Hz | 50 |
| Rated short-time power frequency withstandvoltage(1min) | kV | 32 |
| Rated lightning impulse withstandvoltage | kV | 65 |
| Rated making current | kA | 2.5/4.0/6.3 |
| Rated breaking current,Max | kA | 2.0/3.2/5.0 |
| Ratedbreaking current, Min | A | 50/80/125 |
| Ratedmaking current, limit | kA | 2.5/4.0/6.3 |
| Ratedshort-time withstand current | kA | 2.5/4.0/6.3 |
| Rated duration ofshort-circuit | S | 4 |
| Mechanicallife | Times | 30*104 |
| Electricity lifeAC-3 | Times | 25*104 |
| Electricity lifeAC-4 | Times | 10*104 |
| Ratedcontact stroke | mm | 5±0.5 |
| Contact closing force due to bellows andatmosphere | N | 70±30 |
| Counterforce at rated contactstroke | N | 110±40 |
| Circuitresistance at rated contact force | μΩ | ≤60 |
| Shelflife | Years | 20 |
| Contact erosion limit | mm | 3 |
| Weight ofmoving parts | Kg | ≤0.4 |
2) Mechanical Data Required For Matched VacuumSwitchgear
| MainTechnical Specification | Unit | Specification |
| Rated contactstroke | mm | 110±10 |
| Average opening speed | m/s | 0.6±0.2 |
| Average closing speed | m/s | 0.3±0.1 |
| Contactbouncing duration at closing operation | ms | ≤2 |
| Contactbouncing bank amplitude of opening operation | mm | ≤2 |
| Three-polesimultaneity | ms | ≤1 |
3) Outline Dimension
The BrazingChamber:
Package:
Please feel free tocall me, anything can help.
