4.6.1. OPEN TRANSITION IN-SYNC TRANSFER OPERATION (MODEL X)
If the ATS is supplied with ATS Model X feature (i.e. Open Transition – In-sync Transfer),
the ATS will operate as per automatic sequence of operation (open transition) however
all transfers will occur using in-sync transfer control sensing instead of neutral delay
control logic. All In-sync transfer operations will occur only when both sources of power
are available and within normal operating limits. Note: Open Transition In-sync Transfer
operation is only possible if the ATS mechanism is equipped for in-sync operation and
optional feature is enabled in Settings. Refer to Section 5.11.26 for further details.
4.6.2. CLOSED TRANSITION OPERATION (FAST TRANSFER MODEL 3)
If the ATS is supplied with Closed Transition Transfer –Fast Transfer (i.e. Model 3)
features, the CLOSED TRANSITION control selection will be provided on the GHC
display via the Change Mode button selection.
When the CLOSED TRANSITION button is selected, a pop-up screen will appear
showing operation mode selections as shown below;
The left-hand side of the display shows the current position of the ATS control modes
(i.e. Open Transfer or Fast (Closed) Transfer) based on current selection of the internal
GHC display buttons or external control switch as maybe provided. To change between
operating modes, select desired operation using the GHC display buttons or external
switch as provided.
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