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.
Set
point
Value
time
Delay
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
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