Substation secondary circuit wiring diagram
note 1:When used for bus Ⅱ power input, QA1 is changed to QA2
note 2:When used for bus Ⅱ power input, change terminals A17,C18 from the busbar integrated protection device to C23,C24
QA:Circuit breaker
TA:Current transformer
FE:Lightning arrester
FU:Fuse
BB:Microcomputer line protection measurement and control device
BG:Travel switch
SFU:Transfer switch
Zhejiang Vziman Electric Group Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing, and service of power electrical equipment. Committed to innovation, quality, and customer satisfaction, it supplies smart solutions for global power sectors, covering grid construction, new energy, and industrial distribution. Core Business • Switchgear (GIS, circuit breakers, Recloser, Load break switch) • Distribution equipment (transformers, RMU, smart terminals) • Power automation systems • Engineering services (installation, maintenance, consulting) Technical Strength • Provincial R&D center, multiple patents • Modern production, ISO/GB/IEC/CE/UL certified • High capacity, large-scale delivery support Market & Vision Serves State Grid, Southern Grid, and global projects (Asia, Africa, Europe, etc.). Aims to lead in smart grids and new energy, promoting sustainable energy development.