Table 2. Functions used in preconfigurations. Column 'n' shows the total number of
available function instances regardless of the preconfiguration selected., continued
Functionality A B n
Frequency gradient - - 6
Overfrequency - - 3
Underfrequency - - 3
Overexcitation protection
1)
- - 2
Three-phase underimpedance protection
1)
- - 2
Transformer differential protection for two-winding transformers 1 1 1
Circuit-breaker failure (HV side) 1 1 2
Tripping logic (LV side) 1 1
2
Tripping logic (HV side) 1 1
Multipurpose analog protection - - 16
Control
Bay control 1 1 1
Interlocking interface 4 4 10
Circuit breaker/disconnector control 4 4 10
Circuit breaker 1 1 2
Disconnector 3 3 8
Local/remote switch interface - - 1
Synchrocheck - - 1
Tap changer control with voltage regulator
1)
- - 1
Generic process I/O
Single point control (8 signals) - - 5
Double point indication - - 15
Single point indication - - 64
Generic measured value - - 15
Logic rotating switch for function selection and LHMI presentation - - 10
Selector mini switch - - 10
Pulse counter for energy metering - - 4
Event counter - - 1
Supervision and monitoring
Transformer Protection and Control 1MRS756978 D
RET630
Product version: 1.1 Issued: 2011-05-18
ABB 7
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