产品用于12KV三相交流50HZ环网供电系统中或终端供电系统中起接受、分配电能或过载、短路保护之用，特别适用于无油化、不检修及频繁操作场所，也适用于箱式变电站。
产品符合IEC60298  GB\T11002  GB3906  DL\T404等标准。
The product is applied to12kv three-phase AC 50hz circle-network electric-supply system or terminal electric-supply system to accept , distribute or protect of overload and short circuit , especially in the place without oil, free maintain and frequent place , it is also applied in trunk type transformer substation.
It meets the standards of IEC60298 GB\T11002 GB3906 DL\ T404, etc.
技术参数  technical data
额定电压                                                      KV     12
Rated current
主母线额定电流                                                A      630
Rated current of main bus bar
额定频率                                                      HZ     50
Rated frequency 
主回路、接地回路额定短时耐受电流                              KA     20
Rated endure current of short circuit of main circuit, grounding circuit 
主回路、接地回路额定短时峰值电流                              KA     50
Rated peak value current of short circuit of main circuit, grounding circuit   
主回路、接地回路额定短路关合电流                              KA     50
Rated close current of short circuit of main circuit, grounding circuit      
额定电流开断次数                                              次      10000
Open\close time of rated current                                    time 
熔断器开断电流                                                KA     31.5/40
Turnoff current of
机械寿命                                                      次      10000
Mechanical life                                                 time
1min 工频耐压（有效值）相间、对地\隔离断口                 KV  42/49
Endure voltage of 1 min work frequency （virtual value） alternate with/grounding/isolation ends
雷电冲击耐受电压（峰值）相间、对地/隔离断口                KV  75/85
Endure voltage of thunder shock （peak value） alternate with/grounding/isolation ends
二次回路工频耐压                                            V   2000     
Endure voltage of frequency of twice circuit