高压开关
LW57-252/Y4000-50罐式六氟化硫断路器由我公司自主研发。为分相式结构，采用分相操动，三相电气联动。 它采用了先进的灭弧室设计，实现了结构小型化，显著的提高了产品的电气和机械性能。该产品具有性能可靠、技术先进、结构紧凑、操作功小、寿命长、结构简单、便于安装维护、抗震性能好等诸多优点。
LW57-252/Y4000-50罐式六氟化硫断路器由我公司自主研发。为分相式结构，采用分相操动，三相电气联动。 它采用了先进的灭弧室设计，实现了结构小型化，显著的提高了产品的电气和机械性能。该产品具有性能可靠、技术先进、结构紧凑、操作功小、寿命长、结构简单、便于安装维护、抗震性能好等诸多优点。
| Item | Parameter | ||
| Rated voltage kV | 252 | ||
| Frequency Hz | 50 | ||
| Rated Insulation Level | 1min power frequency withstand voltage （r.m.s）kV | Phase to earth/Phase to Phase | 460 |
| Across the isolating gap | 460+145 | ||
| Rated lightning impulse withstand voltage (peak) kV | Phase to earth/Phase to Phase | 1050 | |
Across the isolating gap | 1050+200 | ||
| Rated current A | 2000, 3150, 4000 | ||
| Rated short circuit breaking current kA | 50 | ||
| Rated short circuit making current (peak) kA | 125 | ||
| Short Line fault breaking current kA | 37.5 / 45 | ||
| Rated line charging breaking current A | 125 | ||
| Rated out of phase breaking current kA | 12.5 | ||
| Rated short time withstand current kA | 50 | ||
| Rated short circuit duration s | 3 | ||
| Rated peak withstand current kA | 125 | ||
| N Rated static terminal Rally | Horizontal longitudinal force | 1500 | |
| Vertical lateral force | 1000 | ||
| Vertical direction | 1250 | ||
| Rated SF6 gas pressure(20℃ gauge pressure) MPa | 0.6 | ||
| Rated operating sequence | O-0.3s-CO-180s-CO | ||
| Yearly leakage rate of SF6 %/ | 0.5 | ||
| Moisture content of SF6 μL/L | 150 | ||
| Mechanical endurance Time | 5000 | ||
| product weight kg | 5900 | ||
The use of advanced single fracture structure, small mixed compression interrupter, interrupter ability, small operation power, is currently the smallest tank breaker operating functions.
Unipolar breaker equipped with the most advanced German ABB HMB-2.8-type hydraulic spring mechanism. Actuator uses a modular design, compact structure, smooth transmission, low operating noise. Because the actuator uses an advanced hydraulic damping system, effectively reducing the wear and tear of the operating system, it is possible to adapt to frequent mechanical operation.
Self-type contact: contact points, good conductivity, strong ability to withstand short-circuit current.
High-performance insulated rod: has a very high electric strength and excellent resistance to mechanical operating shock resistance.
产品名称: LW57-252/Y4000-50罐式六氟化硫断路器
