•
Trip tie breaker
The controller does not require the tie breaker open conditions to be met for a breaker trip. Similarly, the tie breaker is not de-loaded
for a trip.
Table 9.5
Tie breaker trip flowchart
TB opened
No
Yes
TB tripped
Alarm
Tie breaker trip
Open TB
1.
Open TB:
When a trip is required, the controller activates the
Tie breaker > Control
> Open
output to open the breaker.
2.
TB opened:
The controller checks whether the breaker has opened:
•
If the breaker has opened, the trip is successful.
•
If the breaker has not opened, the controller activates the
TB opening failure
alarm.
9.6 Emergency genset test functions
9.6.1 Emergency genset test function
The EMERGENCY genset controller includes a test function so that the operator can easily test the emergency genset. Only the
EMERGENCY genset controller has the test function.
The test function can be started from SEMI mode by pressing the push-button
Test
on the display unit, or from a digital input. If
Test
is pressed (or the digital input is activated) when the controller is not in SEMI mode, then the info message
Not in SEMI
mode
is displayed.
When the test procedure starts, the test continues until the testing time is finished. If a blackout occurs while the test is running, then
the EMERGENCY genset controller stops the test and resolves the blackout. When the blackout is resolved, the test does not
automatically continue.
Inputs
If needed, assign the digital input under
Configure > Input/output
. Select the hardware module, then select the digital input to
configure.
Function
I/O
Type
Details
Engine > Command >
Test genset
Digital input Pulse
When this input is activated, the controller runs the genset test selected in the
controller parameters. This input has the same effect as pressing the TEST
push-button on the display unit.
Parameters
Configure these parameters under
Configure > Parameters > Local power management > Emergency generator
.
DESIGNER'S HANDBOOK 4189340911K UK
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