ABB Relion 630 Series Operation Manual page 93

1MRS757183 F
PML630/Compact Load-Shedding Solution
Operation Manual
4 Set command button is used to set the values entered in the 'Write value' text box.
5 Manual load shed command button initiates the manual load-shedding action.
8. Click the button adjacent to the grid transformers in the substation SLD to view
the slow load-shedding dialog box.
GUID-3731FF43-5073-4E0A-845A-45462A5AFA34 V2 EN
Figure 79: Slow load shed control
The slow load shed control box shows various details.
• Display of active slow load shed mode setting.
• Information related to overcurrent-based slow load-shedding setting and
actual values, like Overload shed based slow LS mode enable/disable, I
(Max.) setting (maximum current setting), I (Max.) actual (maximum of
three phase current value), Operate time and Elapsed time.
• Maximum demand parameters like MaxDmd Pow setting (maximum
power setting), MaxDmd Avg Pow (maximum demand average power),
MaxDmd time interval setting (time interval setting for maximum
demand) as set from PST (and read over IEC 61850 MMS).
• Amount of overload display and Maximum Pow at Slow LS Setting as set
from PST.
• The Reset current based slow LS and Reset MaxDmd command buttons
are used to reset the overcurrent and max demand operation.
Section 4
Using the HMI
85