Page 24 - 山东开川电力设备有限公司

HXGN15-12(SF6)
单元式交流金属封闭环网开关设备
Unit type AC metal-enclosed ring network switchgear

结构特点/Structural features

柜体结构
● 环网柜体采用2mm厚敷铝锌板(或冷轧板喷塑后)铆接成型，柜后设有二处压力释放孔，其一是针对电缆室，另一个针对负荷开关/母线室。此结构能够最
大限地保障人身安装和运行设备的可靠。
● 各间隔小室
○ 母线室：
母线室位于柜的顶部并连接相邻开关柜。
○ 负荷开关是独立单元，内部充以SF6气体。
○ 电缆室
大约75％空间是用于电缆连接、熔断器、接地开关和CT、PT安装。
○ 机构小室与联锁
小室包含操作机构和机构联锁以及位置指示、辅助接点、脱扣线圈、带电显示器和联锁。
○ 继电器箱
继电器箱在柜的顶部，是可选的。小室用来安装特殊的装置诸如仪表、继电器和马达单元。
○ 断路器室
一个断路器(SF6或真空)能置于负荷开关之下方。
● 压力释放
○ 上面的压力释放
上面是用于释放母线和负荷开关室内部电弧事故时产生的气体压力。
○ 下面的压力释放
下面是用于释放电缆小室内部电弧事故时产生的气体压力。
Cabinet structure
● The ring network cabinet is riveted with 2mm thick aluminum-zinc plate (or cold-rolled plate after spraying). There are two pressure relief holes behind
the cabinet, one for the cable room and the other for the load switch/busbar room. This structure ensures maximum reliability of the installation and
operation of the equipment.
● Each compartment
○ Busbar room:
The busbar compartment is located at the top of the cabinet and connects adjacent switchgear cabinets.
○ The load switch is a separate unit filled with SF6 gas.
○ Cable room
Approximately 75% of the space is for cable connections, fuses, grounding switches, and CT, PT mounting.
○ Institutional rooms and interlocks
The chamber contains operator and mechanism interlocks as well as position indications, auxiliary contacts, trip coils, live displays and interlocks.
○ Relay box
The relay box is optional at the top of the cabinet. The chamber is used to install special devices such as meters, relays and motor units.
○ Circuit breaker room
A circuit breaker (SF6 or vacuum) can be placed below the load switch.
● Pressure release
○ Pressure release above
The above is used to release the gas pressure generated during the arcing of the busbar and the inside of the load switch.
○ Pressure release below
The following is the gas pressure generated when the arc accident inside the cable compartment is released.

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