FANOX SIA D, User Manual, Page: 29 / 117

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SIA-D_
Rev. 07
29 / 117
ISO 9001:2008
By using relays SIA-D a tripping bus is implemented. Based on the figure, there are 2 relays with the
function of feeder and 1 relay with the function of supply.
Tripping bus criteria has 2 logical inputs and 2 associated states:
- Phase bocking logical input
- Neutral blocking logical input
- Phase activation state
- Neutral activation state
Relays fith feeder function, active the phase activation state when detect the staring up of function
50P or 51P and actívate the neutral activation state when detect the starting up of function 50N, 51N,
67N1 or 67N2. Phase and neutral activation states must be redirected to the physical outputs using
the outputs configuration.
Relays with supply function, block the trip of functions 50P and 51P when detect the activation of
phase blocking logical input and block the trip of functions 50N, 51N, 67N1 and 67N2 when detect
the activation of neutral blocking logical input. Physical inputs must be assigned to logical inputs
associated to the tripping bus using inputs configuration.
Physical connection is the following:
- Outputs associated to the phase activation of feeder equipments must be connected to the input
associated to the phase blocking of supply equipment.
- Outputs associated to the neutral activation of feeder equipments must be connected to the input
associated to the neutral blocking of supply equipment.
Each one of the involved functions in the tripping bus (50P, 51P, 50N, 51N, 67N1 and 67N2) has an
associated permission. If the permission associated to the function is not enabled in the feeder
equipment, the starting up of this function does not activate the corresponding state. If the associated
permission is not enabled in the supply equipment, the activation of the corresponding input does not
block the trip of this function.
SIA-D
supply
SIA-D SIA-D
feeder a
feeder b
phase pickup
ground pickup
phase pickup
ground pickup
ground blocking input
phase blocking input