Page 10 - 苏州施源特(中德合资)电气有限公司（低压）

SYTV3-12 高压真空断路器
High-voltage Vacuum Circuit Breaker

产品结构及工作原理 /Product structure and working principle

> 主体结构
断路器主体部分设置在由环氧树脂采用 APG 工艺浇注而成的绝缘筒内，这种结构能有效地防止包括外力冲击、污秽环境等外部因素对真空灭弧室的影响。
断路器主体安装在断路器框架后部，与操动机构连接成一个整体。
断路器在合闸位置时主回路电流路径
上出线座 27 经固定在灭弧室上的上支架 26 到真空灭弧室内部静触头，经动触头及其联接的导电夹，软连接，至下支架 30 到下出线座 31。
断路器出厂时各电流等级均装有防尘绝缘筒盖，在实际使用中，额定电流1250A及以下等级运行时可不必去除，额定电流1600A及以上等级运行时必须去除。
> 从动机构
操动机构为弹簧储能操作机构，断路器框架内装有合闸单元，由一个或数个脱扣电磁铁组成的分闸单元，辅助开关，指示装置等部件；前方设有合、分按钮，
手动储能操作孔，弹簧储能状态指示牌，合分指示牌等。
储能
断路器合闸所需能量由合闸弹簧储能提供。储能既可由外部电源驱动电机完成，也可以使用储能手柄手动完成。
储能操作：由固定在框架上的储能电机 16 进行，或者将储能手柄插入手动储能孔中逆时针摇动进行。电动储能时由电机输出轴 15 带动链轮传动系统 (14,
23,18) 手动储能时通过涡轮、蜗杆 (11，13) 带动链轮传动系统。链轮 23 转动时，销 2 推动轮 6 上的滑块 4 使储能轴 7 跟随转动并通过拐臂 5 和 21 拉伸
合闸弹簧进行储能．到达储能位置时．框架上的限位杆 3 压下滑块 4 使储能轴与链轮传动系统脱开．储能保持擎子 9 顶住滚轮 5 保持储能位置，同时储能
轴上连板 24 带动储能指示牌 25 翻转显示“已储能”标记并切换辅助开关切断储能电机供电电源，此时断路器处于合闸准备状态。
合闸
在合闸操作中，不论用手按下“合闸”按钮或远方操作使合闸电磁铁动作，均可使储能保持轴 19 转动，使擎子 9 松开滚轮 8，合闸弹簧收缩同时通过怪比 5、
21 使储能轴 7 和轴上的凸轮 22 转动，凸轮又驱动连杆机构 (34、36、37、38、39) 带动绝缘拉杆 33 和动触头进入合闸位置，并压缩锄头弹簧 32，保持
触头所需接触压力。
合闸动作完成后合闸保持擎子 38 与半轴 41 保持合闸位置，同时储能指示牌、储能辅助开关复位电机供电回路接通。
若外接电源也接通则再次进入储能状态，连杆 44 拉动合 / 分指示牌，显示出“合”的标记，传动连杆拉动主辅助开关切换。
>Main structure
The main part of the circuit breaker is arranged in an insulating cylinder made of epoxy resin by APG technology. This structure can effectively
prevent external factors including external force impact and pollution environment from affecting the vacuum interrupter. The main body of the
circuit breaker is mounted at the rear of the circuit breaker frame and is integrated with the operating mechanism.
Main circuit current path when the circuit breaker is in the closing position
The upper outlet seat 27 is fixed to the upper bracket 26 on the arc extinguishing chamber to the static contact inside the vacuum interrupter,
and is connected to the lower bracket 30 to the lower outlet seat 31 via the movable contact and the conductive clip connected thereto.
When the circuit breaker is shipped from the factory, the current level is equipped with a dust-proof insulating cylinder cover. In actual use, the
rated current of 1250A and below can be removed without running. The rated current must be removed when operating at 1600A or above.
>Driver
The operating mechanism is a spring energy storage operating mechanism. The circuit breaker frame is equipped with a closing unit, a trip
unit composed of one or several tripping electromagnets, an auxiliary switch, a pointing device and the like; a front and a minute button are
arranged in the front. Manual energy storage operation hole, spring energy storage status indicator, splicing indicator, etc.
Energy storage
The energy required to close the circuit breaker is provided by the energy stored in the closing spring. Energy storage can be done either by an
external power drive motor or manually using an energy storage handle.
Energy storage operation: performed by the energy storage motor 16 fixed on the frame, or inserted into the manual energy storage hole by
counterclockwise shaking. When the electric energy storage is carried out by the motor output shaft 15, the sprocket drive system (14, 23,
18) drives the sprocket transmission system through the turbine and the worm (11, 13) during manual energy storage. When the sprocket
23 rotates, the pin 2 pushes the slider 4 on the wheel 6 to cause the energy storage shaft 7 to follow the rotation and to pull the closing spring
through the arms 5 and 21 for energy storage. When reaching the energy storage location. The limit rod 3 on the frame presses the slider 4 to
disengage the energy storage shaft from the sprocket drive system. The energy storage keeps the engine 9 against the roller 5 to maintain the
energy storage position, and the energy storage shaft connecting plate 24 drives the energy storage sign 25 to flip and displays the “already
stored energy” mark and switches the auxiliary switch to cut off the energy supply of the energy storage motor. The circuit breaker is in the
ready state for closing.
Closing
In the closing operation, whether the hand is pressed by the "close" button or the remote operation causes the closing electromagnet to
operate, the energy storage holding shaft 19 can be rotated, so that the engine 9 releases the roller 8 and the closing spring contracts
simultaneously. The storage shaft 7 and the cam 22 on the shaft are rotated by the odd ratios 5, 21, and the cam drives the linkage mechanism
(34, 36, 37, 38, 39) to drive the insulating rod 33 and the movable contact into the closing position, and The tamper spring 32 is compressed to
maintain the desired contact pressure of the contacts.
After the closing operation is completed, the closing and holding of the engine 38 and the half shaft 41 maintains the closing position, and the
energy storage sign and the energy storage auxiliary switch reset the power supply circuit of the motor.
If the external power supply is also turned on, the energy storage state is entered again, and the connecting rod 44 pulls the combined/divided
sign to display the "closed" mark, and the drive link pulls the main auxiliary switch to switch.
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