Asco 1251794, Руководство пользователя

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17
IHT Technical Reference
Options 3-5 - Loading:
Figure 1-16 The Options 3-5 page.
The loading options are important for ensuring that the correct load is
applied and the automatic stall protection feature can prevent
generator damage. Unless you have a good reason for doing otherwise
we recommend that these three options are remain selected.
Load Correction. Provides closed loop load control. This adjusts the
load applied to compensate for variations caused by changes in voltage,
frequency or temperature. Load correction will also compensate for the
fan load if the fan is being powered by the supply on test.
See “Using Load Correction” on page 1 - 24 for more details on the
operation of load correction.
Contactor Delay. Turning on Contactor Delay ensures that all of the
connected load banks synchronise load events to ensure the cleanest
possible load change on the supply on test. Switching off Contactor
delay can result in the generator AVR response appearing worse than
normal.
Stall Protection. If the supply frequency drops by more than 20% for
3 seconds a pop-up warning message is displayed. After 5 seconds the
load will be dropped and the warning message will change to “Stall
Rejected”.
Options 4-5 - Resolution:
Figure 1-17 The Option 4-5 page.
Load Control. Lets you override the default increment for load
selection. The default resolution for load control is determined by the