Product Description
WORKING VACUUM CIRCUIT BREAKER
When the fault occurs in the system, the contacts of the breaker
are moved apart and hence the arc is developed between them. When
the current carrying contacts are pulled apart, the temperature of
their connecting parts is very high due to which ionization occurs.
Due to the ionization, the contact space is filled with vapour of
positive ions which is discharged from the contact material.
The density of vapour depends on the current in the arcing. Due to
the decreasing mode of current wave their rate of release of vapour
fall and after the current zero, the medium regains its dielectric
strength provided vapour density around the contacts reduced.
Hence, the arc does not restrike again because the metal vapour is
quickly removed from the contact zone.
| Item | Unit | Data |
| Rated insulation level | 1min power frequency withstand voltage | Dry | KV | 42 | 65 |
| Wet | 34 | 50 |
| Lightning impulse withstand voltage | 75 | 1250 |
| Rated short circuit breaking current | KA | 20;16;12.5 | 20;16;12.5 |
| Rated short circuit breaking times | Times | 30 | 30 |
| Rated short-circuit switching current | KA | 50 | 50 |
| Rated peak withstand current |
| Rated short-circuit withstand current | 20 | 20 |
| Rated short circuit duration | S | 4 | 4 |
| Opening time(SHT) | Maximum operating voltage | ms | 15-50 | 15-50 |
| Rated operating voltage |
| Minimum operating voltage | 30-60 | 30-60 |
| Closing time | ms | 25-50 | 25-50 |
| Full-off time | ≤100 | ≤100 |
| Arcing time | 20 | 20 |
| Mechanical life | Times | 1000 | 1000 |
| Charging motor rated input power | W | 40 | 40 |
| Rated operating voltage and auxiliary voltage circuit | V | DC220,110,24 | DC220,110,24 |
AC220,110,24 | AC220,110,24 |
| Rated voltage of the storage time | S | ≤10 | ≤10 |
| Over current release | Rated current | A | 5 | 5 |
| Trip current accuracy | % | ±10 | ±10 |
Company Information
INTRODUCTION
Zhejiang Xinkou Power Equipment Co.,Ltd, is a high-tech enterprise
specializing in developping, design, manufacture, sales, import and
export of low voltage and high voltage electrical products.
Company main products: indoor and outdoor high voltage vacuum
circuit breaker, load break switches, disconnecting switches, drop
out fuse cutour, lightning arrester, etc. All products comply with
the requirements of GB, IEC, ANSI and other international standard.
SERVICE
We have a very professional sales team which can offer you the best
service and answer you very professional questions, so you can feel
very comfortable before you buy machine from us. As is known to all
of us, after-sale service is the most important to all industries.
Our company has been trying our best to build a very professional
and high-caliber after-sale service team which can solve all
problems efficiently in the future.
