FZW28 vacuum load switch manufacturers Vacuum Electric Co., Ltd. Ningbo cloud vibration. FZW28-12F / 630-20 outdoor high column vacuum load switch boundaries column overhead line feeder automation including automated load switch body load switch, switch control unit (FTU), outdoor voltage transformer three parts, three outdoor protection control cable assembly and outdoor air connectors make sets of electrical connections, the device itself can be automated functions. Automated column load switch can automatically control switching division, complete overhead line fault monitoring, fault isolation and non-functional segment to restore power. Automated column load switch features: 1, fully insulated switchgear sealed, maintenance-free equipment with 15 years of operating conditions, and have proof function. 2, SF6 and vacuum interrupter interrupter bubble. Electric combination device operating mechanism must have a vacuum switch sub-gate prior to isolation break off function; the opposite order of the corresponding closing action. 3, sealed boxes SF6 gas, the gas leakage rate in less than 0.5%. 4, the shell material spray cold plate, and ensure that more than 20 years does not rust. 5, the switch is not exposed live parts, to avoid contamination. Switch sealed box set of abnormal pressure safety release point or area; 6, switch with spring energy, electromagnetic operating mechanism, with manual / automatic operation function, and blocking each other. There are obvious "points" on the switch housing, "together", "automatic" and "manual closing" and other instructions, you can clearly identify the corresponding switch after installation run together, opening position, open and close the switch points closing position indication unanimously. 7, the switch with electric operation and automation interface, the control interface is fully sealed air connectors. 8, switch configurations dedicated ground wire installation location, install bolts and ground signs. 9, switching and power transformer (PT), the controller (FTU) support, to achieve the background and does not rely on communication systems, relying on the device itself intelligence failure in the line, the line can automatically isolate trouble areas, restore the normal range power transmission. FZW28 vacuum load switch vibration Vacuum Electric Co., Ltd. Ningbo cloud price.