Table 1603: Manual transfer setting description
Manual transfer setting values Description
“Off” Manual transfer is disabled
“On” Manual transfer is enabled
“Fast MBB” Manual transfer is enabled. With this selec-
tion fast transfer is always made as fast se-
quential make before break transfer.
Circuit-breaker open transfer initiation
In case the circuit breaker of the active feeder is opened without reason (no
transfer initiation, breaker opened manually or directly by external triggering),
function initiates transfer in case transfer conditions are fulfilled. Circuit breaker
open transfer can be enabled with setting
Ena CB open transfer
. Transfer can be
enabled to one direction only or to both directions:
• Setting value “1>2” enables transfer from feeder 1 to feeder 2.
• Setting value “2>1” enables transfer from feeder 2 to feeder 1.
• Setting value “both” enables transfer to both directions.
• Setting value “Off” disables the transfer initiation based on circuit breaker
opening.
Activation based on CB open transfer can be also disabled via input DISA_CBOPN.
Output INIT_CBOPN is activated if transfer is initiated by CB open transfer.
Transfer initiation signal combines all initiation signals.
9.12.5.5 Bus transfer
Functionally module can be split to submodules presented in
Figure 938
. Each
module is explained later below.
Control functions
1MRS759142 F
1770 REX640
Technical Manual
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