Puffer HV load switch: Use of the process of breaking piston pressure gas blows out the arc, its structure is relatively simple, applicable to 35 kV and below.
HV load switch works similar to the circuit breaker. Usually equipped with a simple interrupter device, but its structure is relatively simple. HV load switch Pictured a gas compression, the course of their work: The sub-gate, the opening spring spindle clockwise rotation, the piston moves upward, the gas compression on the one hand by the slider-crank mechanism; Another transmission system composed by two sets of four-bar linkage, the main knife to open the first, then promote interrupter knife arcing contacts open, blow out the arc of a cylinder of compressed air through the vents. Closing time, through the spindle and drive system, the main knife and interrupter knife while turning it clockwise arc contacts first closed; Spindle continues to rotate, and the subsequent closure of the main contacts. In the closing process, the opening spring energy storage at the same time. Load switch can not short-circuit current breaking Guchang current limiting high-voltage fuse used in combination, the use of current-limiting fuses current limiting function, not only to complete the task of breaking the circuit and can significantly reduce the short-circuit current caused hot and the role of the electric power.
|
No. |
Item |
unit |
Description |
|
|
|
|
FKN12A-12D |
FKRN12A-12D |
|
1 |
Rated voltage |
KV |
12 |
|
|
2 |
Rated frequency |
hz |
50 |
|
|
3 |
Rated current |
A |
630 |
125 |
|
4 |
rated absolute
Edge level 1min power frequency withstand voltage KA
Lightning impulse withstand voltage (peak) |
KV |
interrupter fracture
Between earth to phase 42
Insulator fracture 48 |
|
5 |
Rated dynamic stability current (peak) KA |
KA |
50 |
|
|
6 |
4s thermally stable KA |
KA |
20 |
|
|
7 |
rated active load breaking current A |
A |
630 |
125 |
|
8 |
rated closed-loop breaking current |
A |
630 |
125 |
|
9 |
rated cable charging breaking current |
A |
10 |
10 |
|
10 |
rated breaking load transformer capacity |
KVA |
1250 |
1250 |
|
11 |
rated short-circuit breaking current |
KA |
|
31.5 |
|
12 |
Rated the transfer current |
A |
|
2000 |
|
13 |
Fuse type |
|
|
SDLAJ-12 |
|
14 |
Shock output power |
J |
|
2-5 |
|
15 |
Rated short-circuit current |
KA |
50 |
|
16 |
earthing switch Rated dynamic current |
KA |
50 |
|
17 |
grounding switch rated thermal stability current |
KA |
20 |
|
18 |
Rated voltage of auxiliary circuit |
V |
AC/DC220: 10 |
|
19 |
Mechanical life (load switch / ground to at the beginning) |
Time |
10000 |
Zhiming Group Co., Ltd., located along the sea in south zhjiang, wenzhou, liushi. Established in 1991, our factory mainly produces single phase, three phases mechanical electronic type kwh meters; Ge brand meter base, panel meter, low voltage shunt capacitors; High voltage shunt capacitor electronic components and etc.
In March 2001, we had passed ISO9001. "zhiming" brand products are now widely accepted by most clients. On the basis of hi-tech and modern management, our company is robustly developing and glowing up, marketing shares are more and more increased. In order to ensure and improve the quality, we have equipped with modern testing apparatus and excellent production technology and therefore continuously provided, with low price and best quality, dd28 dd17 dd862, dt862 series kwh meters, dds450 single phase electronic meters, ddsy ordtsy 450 electric with prepay fee. Dtsf 450 multi tariff kilo watt hour meter. Ge meter base, amper meter and voltage meter, bsmj low voltage shunt capacitors, bmh high voltage shunt capacitor, power relay, cj19 contactor for switching capacitors, AC contactors, mini circut breaker MCCB. Besides at maximum to meet with domestic marketing, our products are also exported southeast Asia, Russia and etc. Our company devote to building an integrated enterprise combined with tech research, industrial production and trading, on basis of "best quality, satisfactory services, hard research".
Under our topic of "true attitude, creation and innovation, perfect services", we honestly welcome all clients to make mutual development.
