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ZW8-12户外高压真空断路器

更新:2014-10-22 9:09:29点击:
  • 产品品牌
  • 产品型号ZW8-12
  • 在线订购
产品介绍
概述
ZW8-12系列户外高压真空断路器为额定电压12kV,三相交流50Hz的户外高压开关设备,主要用来开断关合农网、城网和小型电力系统的负荷电流、过载电流、短路电流。该产品总体结构为三相共箱式,三相真空灭弧室置于金属箱内,利用SMC绝缘材料相间绝缘及对地绝缘,性能可靠,绝缘强度高。
ZW8-12G是由ZW8-12断路器与隔离刀组合而成的,称为组合断路器,可作为分段开关使用,也可自备电源,有内置PT与外置PT。
本系列产品的操动机构为CT23型弹簧储能操动机构,分为电动和手动而成。
型号及其含义
主要技术参数
序号 名称 单位 数据
6.3KA 12.5KA 20KA
1 额定电压 kV 12
2 最高工作电压 kV 12
3 额定电流 A 630
4 额定短路负载开断电流 kA 6.3 12.5 20
5 额定短路关合电流(峰值) kA 16 31.5 50
6 额定峰值耐受电流 kA 16 31.5 50
7 额定短时1min耐受电流 kA 6.3 12.5 20
8 额定绝缘水平 工频耐压(干式) kV 42
雷电冲击耐压(峰值) 75
9 额定操作顺序   分-0.3S-合分-180S-合分
10 机构寿命 10000
11 额定短路开关电流开关次数 30
12 操作机构额定合闸电压 V 110,220
13 操作机构额定分闸电压 V 110,220
14 触头开距 mm 11±1
15 超行程(触头弹簧压缩长度) mm 3
16 三相分、合闸不同期性 ms ≤2
17 触头合闸弹跳时间 ms ≤2
18 平均分闸速度 m/s 1.0±0.2
19 平均合闸速度 m/s 0.7±0.15
20 分闸时间 最高操作电压下 s 0.015-0.05
最低操作电压下 0.03-0.06
21 合闸时间 s 0.025-0.05
22 各相主回路电阻(组合断路器主回路电阻) μΩ ≤120(≤200)
23 动静触头允许磨损累计厚度 mm 3
外形及安装尺寸图
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