Controller type Source Breaker
SHORE connection Shore connection SCB
BUS TIE breaker Busbar A BTB
*Note: The EMERGENCY genset controller also controls the tie breaker to the emergency busbar. The Trip generator breaker alarm
action trips the emergency genset breaker (EGB), while Trip tie breaker trips the tie breaker.
The controllers include the following alternating current (AC) protections, according to IEEE Std. C37.2-1996 (R2008).
The protections comply with the protection functionality in IEC 61850-5 and IEC 61850-7-4, but not the communication requirements
of IEC 61850. The protection names in the following tables are derived from the specification that provides the most accurate
description of the protection.
3.4.2 [Source] over-voltage (ANSI 59)
Protection
IEC symbol (IEC60617) ANSI (IEEE C37.2) IEC 61850 Operate time
Over-voltage U>, U>> 59 PTOV < 100 ms
The alarm response is based on the highest phase-to-phase voltage, or the highest phase-to-
neutral voltage, from the source, as measured by the controller. The phase-to-phase voltage is
the default.
Configure the parameters under Configure > Parameters > [Source] > Voltage protections > Over-voltage #, where # is 1 or 2.
Table 3.27
Default parameters
Parameter Range Over-voltage 1 Over-voltage 2
Set point 80 to 120 % of nominal voltage 105 % 115 %
Time delay 0.00 s to 1 h 5.00 s 1.00 s
Enable Not enabled, Enabled Not enabled Not enabled
Latch Not enabled, Enabled Not enabled Enabled
Action Warning Block
Table 3.28 Default inhibits
Controller type Inhibit(s)
GENSET Generator breaker closed
EMERGENCY genset EDG in parallel, EDG handling blackout
SHAFT generator Shaft breaker closed
SHORE connection Shore breaker closed
DESIGNER'S HANDBOOK 4189340911K UK Page 62 of 521
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