Substation secondary circuit wiring diagramnote 1:When used for busⅡ power input, QA1 is changed to QA2note 2:When used for busⅡpower input, change terminals A17,C18 from the busbar integrated protection device to C23,C24QA:Circuit breakerTA:Current transformerFE:Lightning arresterFU:FuseBB:Microcomputer line protection measurement and control deviceBG:Travel switchSFU:Transfer switch

Composite electrical signal alarm circuit secondary wiring diagramSFA:change-over switchSFB:change-over buttonKFM:Intermediate relay

Secondary control circuit diagram of isolation switch and ground switch in combined electricSP:Limit deviceCX:Closing contactorSFA:selector switchSFB:selector button89KT:Thermal relayTX:Dc switching contactor

Primary main wiring of single bus segmentTA:Current transformerTV:Voltage transformerPG:Pressure GaugeQA:Circuit breakerQB:Disconnecting switchQC:Ground switch

Example of application cable connections for small-capacity DC power supplies

Two-charge single-bus segment DC system wiring diagram

Single-charge single-bus DC system wiring diagram

Layout of GIS type high voltage electrical combination (Single bus section wiring)

Layout of GIS type high voltage electrical combination (Internal bonding)

10(6)/0.4kV Substation Layout Scheme(with workshop)(a)Workshop built-in type(b)Workshop built-in type(c)Workshop built-out type(d)Workshop built-out type1-Transformer room2-Low voltage switchboard room3-Highvoltage switchboard room