LW8-40.5 Outdoor high voltage AC vacuum circuit breaker
LW8-40.5 series SF6 circuit breaker is a three-phase AC 50Hz outdoor high-voltage electrical equipment, which is suitable for the control and protection of 40.5kV power transmission and distribution system, and can also be used as a contact circuit breaker and capacitor bank occasions. The product has excellent breaking performance, adopts compressed gas interrupter, has a long electric life, and continuously breaks the 40kV short-circuit current for 21 times without maintenance under the rated voltage; Each unit can be equipped with 2 current transformers for users to choose. The product adopts the new MKZ type SF6 pointer density gauge, and the pressure gauge reading is not affected by temperature changes, which is easy to use. This product is equipped with a CT14 spring mechanism.
The circuit breaker is divided into two structures: floor tank type and porcelain pillar type. There are two types of porcelain column arrangement: parallel arrangement and elevated T frame (central type) arrangement.
L W 8 - 40.5 / X - X
1 2 3 4 5 6
| 1:SF6 Vacuum Circuit Breaker |
| 6.Rated short-circuit interrupting current(kA) |
| Attribute |
Unit |
Data |
| Rated voltage |
KV |
40.5 |
| Rated insulation level |
Lightning impulse withstand voltage (full wave peak) |
KV |
185 |
| Power frequency withstand voltage (1min) |
KV |
95 |
| Rated current |
A |
1600 2000 |
| Mechanical life |
TIMES |
3000 |
| Rated pressure of sulfur hexafluoride gas(gauge pressure at 20 degrees centigrade) |
MPA |
0.50 |
| Alarm pressure /Minimum functional pressure (gauge pressure at 20 degrees centigrade) |
MPA |
0.47/0.45 |
| Rated short-circuit breaking current |
KA |
25 |
31.5 |
| Rated short-circuit making current (peak value) |
KA |
63 |
80 |
| Rated short-time withstand current (thermal stability current) |
KA |
25 |
31.5 |
| Rated short-time withstand current (thermal stability current) |
KA |
60 |
80 |
| Rated short-circuit breaking current |
KA |
63 |
8 |
| Accumulated breaking times under rated short-circuit breaking current |
TIMES |
15 |
10 |
| Rated short circuit duration closing time |
S |
4 |
|
| Closing time (at rated operating voltage) |
S |
≤0.1 |
| Closing time (at rated operating voltage) |
S |
≤0.06 |
| Rated operating sequence |
|
C-0.3S-CO-180S-CO |
| Rated switching current of single capacitor bank |
A |
400 |
| Year leak |
%Year |
≤1 |
| Moisture content of sulfur hexafluoride gas (V/V) |
|
≤150×10-9 |
| Rated operating voltage with CT14 spring operating mechanism |
|
|
| Closing coil, opening coil voltage |
V |
AC:220 380 DC:48 110 220 |
| Energy storage motor voltage |
V |
AC:220 380 DC:110 220 |
| Sulfur hexafluoride gas weight |
KG |
8 |
| Weight of circuit breaker (including operating mechanism) |
KG |
1400 |
Wenzhou Naisite Electric Co., Ltd is a technology oriented transmission and distribution equipment manufacturing enterprises, since its establishment in 2011, focus on transmission and distribution equipment technology progress, advocating technological innovation, introduce new energy prefabricated, a secondary fusion ring cage, environmental protection cabinet,Transformers, cable branch box, box type substation such as intelligent high and low voltage transmission and distribution equipment. Applicable to electric power, railway, petrochemical, subway, municipal construction, steel, coal and other industries. The company's products have achieved a number of technological breakthroughs in environmental protection, miniaturization, intelligence, maintenance free and other aspects. The headquarters of Wenzhou Naisi Electric Co., Ltd is located in the core area of Wenzhou Yueqing Economic Development Zone, "the capital of Electrical appliances in China". Has an excellent domestic intelligent distribution network products assembly line.
The company has a vacuum box helium leak detection system, local discharge test laboratory and other advanced inspection and test equipment system. With the basic experimental facilities and research environment needed for advanced technology development and scientific research, the products are tested according to the international IEC standards. The enterprise has passed the IS09001 quality system certification, IS014001 environmental system certification and OHSAS18001 occupational health and safety management system certification, the products have been obtained the CNAS national accreditation laboratory certification report.
| Q: Are you a trading company or manufacturer ? |
| A: We are a professional factory with 10 years experience in the field of High and Low voltage switchgears,Substation,transformers,cable distribution box and various electrical equipment, such as vacuum circuit breaker , load break switch etc.Our factory is the excellent supplier of State Grid Corporation of China . |
| Q: Do you accept customized serveice ? |
| A: We offer OEM/ODM service , can print your logo on product . our professional technical and quotation team can provice a satisfied project according to your drawing and parameters . |
| Q:How long is your delivery lead time ? |
| A: It depends on your product requirement and quantity . Generally , 5~10 working days is available . |
| Q: How do you solve quality problems? |
| A: Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse.we will make a satisfied soluton within 2 days. |
| Q: What is your payment terms ? |
| A: 30%T/T in advance,70% before shipment . West union , L/C are also acceptable . |
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