Installation guide

A-27
Functions
and characteristics
BA controller
DB101602
Inputs
UN : “Normal” source voltage
UR : “Replacement” source voltage
KT : order for forced-operation on R
KR : additional check before transfer
Outputs
QN :
“Normal” source circuit breaker
QR : “Replacement” source circuit breaker
UA controller
DB101604
Inputs
UN : “Normal” source voltage
UR
: “Replacement” source voltage
KT : order for forced-operation on R
KR : additional check before transfer
Outputs
KG :
order to the genset
SH :
load-shedding order
QN : “Normal” source circuit breaker
QR : “Replacement” source circuit breaker
Key
O: OFF (circuit open)
I: ON (circuit closed
: either ON or OFF.
Important
If UR is not ON when the transfer order is issued (KT or UN), the sequence is not carried out.
If KR status is not ON when the transfer order is issued (KT or UN), the transfer sequence is
carried out later when KR status becomes I.
Operating sequences
Livre 1.indb 27 08/10/2008 18:39:08