ZN33B-12悬挂式高压真空断路器Detailed product description：

ZN33B-12型悬挂式高压真空断路器(以下简称断路器)，是在原ZN33B-12型产品基础上汲取了国内外VD4﹑VK﹑VS1型产品的技术精华，全新设计的高可靠、免维护产品。断路器适用于三相交流50HZ，额定电压12kV及以下的户内高压配电设备，作为电网设备、工矿企业动力设备的保护和控制单元，由于断路器外附专利产品CDY型永磁机构，使其具有优异的性能，特别适用于频繁操作，或多次开断短路电流的场所。

ZN33B-12悬挂式高压真空断路器技术参数

序号 S．N	项目 Item	单位 Unit	数值 Digital Value
1	额定电压 Rated Voltage	kV	12
2	额定短时工频耐受电压(1min) Rated Short Period Work Frequency Voltage Endurance (1 min)		42
3	额定雷击冲击耐受电压（峰值） Rated Thunder and Lightening Striking Endurance Voltage (Peak Value)		75
4	额定频率 Rated Frequency	HZ	50
5	额定电流 Rated Current	A	630 1250	630 1250
6	额定短路开断电流 Rated Short-circuit On and Off Current	KA	20	31.5
7	额定短时耐受电流 Rated Short Period Endurance Current		20	31.5
8	额定短路持续时间 Rated Short-circuit Continuing Time	S	4
9	额定峰值耐受电流 Rated Peak Value Endurance Current	kA	50	80
10	额定短路关合电流 Rated Short-circuit On-switch Current		50	80
11	二次回路工频耐受电压（1min） Secondary Loop Work Frequency Voltage Endurance (1 minute)	V	2000
12	额定单个/背对背电容器组开断电流 Rated Single/Back to Back Capacitor Group On and Off Current	A	630/400
13	额定电容器组关合涌流 Rated Capacitor Group Enclosed Surge	KA	12.5(频率不大于Frequency not larger than 1000HZ)
14	机械寿命 Mechanical Lifespan	次 Times	20000
15	额定电流开断次数 Rated Current On and Off Times		20000
16	额定短路电流开断次数 Rated Short-circuit Current On and Off Times		50
17	动、静触头允许磨损累计厚度 Allowed Worm Accumulated Thickness of Dynamite and Static Contact Head	mm	3
18	额定操作顺序 Rated Operating Sequence		OFF分-0.3S-ON/OFF合分-180S-ON/OFF