Add to Cart
CONSTRUCTION OF VACUUM CIRCUIT BREAKER
It is very simple in construction as compared to any other circuit
breaker. Their construction is mainly divided into three parts,
i.e., fixed contacts, moving contact and arc shield which is placed
inside the arc interrupting chamber.
vacuum-circuit-breakerThe outer envelope of vacuum circuit breaker
is made up of glass because the glass envelope help in the
examination of the breaker from outside after the operation. If the
glass becomes milky from its original finish of silvery mirror,
then it indicates that the breaker is losing vacuum.
The fixed and moving contacts of the breaker are placed inside the
arc shield. The pressure in a vacuum interrupter at the time of
sealing off is kept at about 10-6 torr. The moving contacts of the
circuit breaker are move through a distance of 5 to 10 mm depending
upon the operating voltage.
The metallic bellows made of stainless steel is used to move the
moving contacts. The design of the metallic bellows is very
important because the life of the vacuum circuit breaker depends on
the ability of the component to perform repeated operations
satisfactorily.
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 |
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.
Q1. Can we have our logo or company name to be printed on your
products or the package?
Yes,you can.Logo and company name can be printed on our products by
silk screen printing.You can send us the artwork by email in JPEG
or TIFF format.
Q2. What is lead time?
Usually 3-15 working days, On-Time delivery
Q3. Why us?
All products comply with the requirements of GB national standards,
IC, ANSI and other international standards, and the requirements of
company's technology standards.
Q4. How do you make our business long-term and good relationship?
1. Our high quality and competitive price are the most important
factors to maintain long-term and good relation -ship with our
customers.
2. Good service is our basic principle for every customers.
Q5. Can I have a visit to your factory before the order?
Sure,welcome to visit our factory.