DSE Model 8620 AMF Controller Operators Manual
97
7.10 ROCOF / VECTOR SHIFT
When configured to run in parallel with the mains (utility) supply, the module monitors for ROCOF /
Vector shift trips according to the module’s configuration settings. This is included within the module
and will detect failure of the mains supply during parallel operation with the generator.
NOTE:- This protection operates only when in parallel with the mains supply and is disabled at all
other times.
Should either of these alarms operate, the module will perform either a controlled shutdown (electrical
trip) of the generator or will instigate the mains failure function. This operation must be manually reset :
1) Press button. The engine will stop if it is still running and the alarm is cleared.
2) Activate digital input configured to “Clear ROCOF/Vector shift” if this has been provided.
3) Press and button together and hold for 5 seconds. The ROCOF/Vector shift
instrument is displayed and all ‘peak hold’ values are reset, clearing the ROCOF/Vector shift
alarm.
For details on activating and configuring the ROCOF/Vector shift protection you are referred to the
DSE8620 software manual.
7.10.1 MAINS DECOUPLING TEST MODE
To aid the testing of the mains decoupling features in the controller, a special test mode is included.
This is activated by placing the module into STOP mode and enabling the ‘test mode’ in the module’s
front panel ‘running editor’, described elsewhere in this document.
This allows a ‘one shot’ test of the mains decoupling protection, enabling the Test Engineer to inject the
necessary test signals into the DSE control and timing the reaction from application of the signal to
activation of a DSE output configured to ‘combined mains decoupling’.
The actual testing of mains decoupling must be left to experienced engineers and is outside the scope
of DSE support.
To Next Page
Loading...
Need help?
General
