ABB RET670 - Application

3.12.2.1 Application
The apparatus control is a function for control and supervising of circuit breakers,
disconnectors, and grounding switches within a bay. Permission to operate is given
after evaluation of conditions from other functions such as interlocking, synchronism
check, operator place selection and external or internal blockings.
Figure
232 gives an overview from what places the apparatus control function receive
commands. Commands to an apparatus can be initiated from the Control Centre (CC),
the station HMI or the local HMI on the IED front.
Station HMI
GW
cc
Station bus
breakers disconnectors grounding switches
ANSI08000227.vsd
Apparatus
Control
IED
CLOSE/OPEN
Local
HMI
Apparatus
Control
IED
Apparatus
Control
IED
Local
HMI
Local
HMI
CLOSE/OPENCLOSE/OPEN
ANSI08000227 V1 EN
Figure 232: Overview of the apparatus control functions
Features in the apparatus control function:
• Operation of primary apparatuses
• Select-Execute principle to give high security
• Selection and reservation function to prevent simultaneous operation
• Selection and supervision of operator place
• Command supervision
• Block/deblock of operation
• Block/deblock of updating of position indications
• Substitution of position indications
• Overriding of interlocking functions
• Overriding of synchronism check
1MRK504116-UUS C Section 3
IED application
603
Application manual