Shaanxi Pinggao Intelligent Electrical Co., Ltd. [ZN42-27.5/630/1250/1600/2000/2500A-31.5] handcart high-voltage vacuum circuit breaker is a new type of circuit breaker produced with advanced foreign technology Spring Operating mechanism and ceramics Vacuum arc extinguishing chamber, reinforced insulation current transformer. It is mainly used for power supply and distribution system of indoor single-phase AC 50Hz electrification * * * traction substation, switching post and distribution room, and for receiving and distributing electric energy in the * * * power supply system of electric traction. It can be separately installed in the grid type compartment of the indoor network, or installed in the dedicated 27.5kV electrification * * * switch Inside the cabinet. Under normal working conditions, the altitude of ordinary type is less than 1000m, and the altitude of plateau is not more than 4000m; Please indicate when the height exceeds 1000 meters; The ambient temperature is not higher than 40 and not lower than - 25; The relative humidity is not more than 95%, and the monthly average is not more than 90%; other The environmental conditions comply with GB/T11022-1999.
structure characteristics
Shaanxi Pinggao Intelligent Electrical Co., Ltd. [ZN42-27.5/630/1250/1600/2000/2500A-31.5] The overall structure of vacuum circuit breaker is handcart, which is mainly composed of frame, operating mechanism and propulsion interlocking mechanism. The upper and lower outlet sockets and arc extinguishing chambers pass through two epoxy The insulator and two insulation pillars are connected to form a rigid body by bolts and frames to form the main circuit of the circuit breaker; The mechanism adopts a new spring energy storage mechanism, and each functional component is horizontally arranged in the mechanism box. The mechanism box is connected with the frame through bolts, and is connected with the movable conductive rod of the vacuum arc extinguishing chamber through an insulated transmission rod. The purpose of manually and electrically operating the circuit breaker is achieved.
Structure and size of circuit breaker:
The circuit breaker mainly has the following two structural forms, and the insertion size of the upper and lower moving and static contacts of the handcart can be rearranged according to the user's requirements.
Product characteristics
Reliability: Under rated current, the allowable open circuit times can reach 10000 times. Under the rated short circuit current, the test shall be disconnected for 30 times.
In terms of maintenance, the operating mechanism usually requires only a small amount of cleaning or lubrication.
Product series parameters are complete: rated current from 630A to 2500A, rated breaking current from 16kA to 31.5kA
All products are mechanically run in and accurately processed according to the reliability principle before leaving the factory to ensure the reliability of products.
The product series and versatility are good, and it is convenient for users to maintain and use.
The product complies with current standards such as GB1984, JB/T6463 and TB2803.
Strong environmental adaptability: it can meet the use environment of 4000 meters above sea level.
Product parameters
Name Unit Value
1 Rated voltage kV27.5
2 Larger voltage kV31.5
3 Rated insulation level lightning impulse withstand voltage kV185 between the fracture and the phase to ground
One minute power frequency withstand voltage between crack and phase to ground 95
4 Rated frequency Hz50
5 Rated current A125016002500
6 Rated short-circuit breaking current kA25, 31.5
7 Rated short-circuit making current kA63808 Rated peak withstand current kA63, 80
9 Rated short-term withstand current kA25, 31.5
10 Rated short circuit duration s4
11 Rated capacitor bank breaking current A400
12 Rated operation sequence o-0.3s-co-180s-co
13 Cumulative wear of static and dynamic contacts mm3
14 Rated short-circuit breaking current breaking times 30 times
15 Mechanical life times 10000
16 contact pressure N3000 300
17 Closing time ms150
18 Opening time ms25s60
19 Open circuit time ms80
20 Energy storage motor power W350
21 Energy storage motor voltage VAC110V DC110V、AC220V、DC220V
22 Energy storage time s15
23 minutes, rated voltage of closing electromagnet VAC110V, DC110V，AC220V，DC220V
Shaanxi Pinggao Intelligent Electric Co., Ltd
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Baodao Province, China Hong Kong Special Administrative Region, China Macao Special Administrative Region
