ABB Relion 670 Series Technical Reference Manual page 639

1MRK505222-UUS C
12.2
12.2.1
12.2.2
12.2.2.1
Technical reference manual
Function
Time delay for energizing check
Operate time for synchronism
check function
Operate time for energizing
function
Autorecloser SMBRREC (79)
Function Description
Autorecloser
Introduction
The autorecloser SMBRREC, 79 function provides high-speed and/or delayed auto-
reclosing for single or multi-breaker applications.
Up to five three-phase reclosing attempts can be included by parameter setting. The
first attempt can be single-, two and/or three pole for single pole or multi-pole faults
respectively.
Multiple autoreclosing functions are provided for multi-breaker arrangements. A
priority circuit allows one circuit breaker to close first and the second will only close if
the fault proved to be transient.
Each autoreclosing function is configured to co-operate with the synchronism check
function.
Principle of operation
Logic Diagrams
The logic diagrams below illustrate the principles applicable in the understanding of
the functionality.
Range or value
(0.000-60.000) s
160 ms typically
80 ms typically
IEC 61850 IEC 60617
identification identification
SMBRREC
SYMBOL-L V1 EN
Section 12
Control
Accuracy
± 0.5% ± 10 ms
-
-
ANSI/IEEE C37.2
device number
79
O->I
633