LARSEN & TOUBRO Advanced Feedervision ( AFV2) :
AFV2 is used to fulfil the comprehensive scheme requirements to provide all necessary overcurrent, earth fault, check synch and voltage protection with hardwired interlocking for full automatic change-over and momentary paralleling of multi-incomer and bus section systems.

Typically 4x AFV2s are implemented to achieve the selective nature of automatic transfer including all of the protection based decisions, permissive interlocking and involved control logic necessary to provide functional control of auto transfer requirements compliant to Exxon/ Esso/ Shell specifications.

192x96mm din case
50x50mm LCD with 2x tri colour LEDs
24x digital inputs
8x changeover contact relay outputs
2x TCS inputs + 2x changeover contact relay outputs
1x Aux supply 80-265V ac/ dc or 24-70V ac/ dc
3x VT input ( Ph-N connection)
1x VT input ( Ph-N or Ph-Ph connection) for Check Sync
1x RS485 Modbus / Profibus / Ethernet rear port
1x RS232 front port
4x CT inputs ( 3ph + 1EF or 2ph + 2EF) .