Woodward 9907-026, Руководство по эксплуатации продукта

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Load Sharing Module (Analog Output) Manual 02029
6 Woodward
Figure 2-1. Open Delta Connection
Potential Transformer (PT)
Connect the wiring from the potential transformer (or transformers) as shown in
the plant wiring diagram.
Droop Contacts
Because the load-sharing-line relay is contained in the control, no relay is
required between the control and the load-sharing-line bus. Use shielded cable
and connect the load-sharing lines directly to terminals 10 (+) and 11 (–).
Connect the shield to terminal 12.
The droop contact for selecting droop or isochronous operation is wired in series
with the circuit-breaker auxiliary contact to terminal 13. When both the droop
contact and circuit-breaker auxiliary contact are closed, the control is in the
isochronous load-sharing mode. In this mode the internal load-sharing-line relay
is energized, the droop signal is disabled (permitting isochronous load sharing),
and the load-matching circuit is connected to the load-sharing lines.
The control is in the droop mode when EITHER the droop contact or the circuit-
breaker auxiliary contact is open. If the droop contact is open, the control
remains in the droop mode even when the circuit-breaker auxiliary contact is
closed.
SPM Synchronizer
Connect the wiring to the SPM Synchronizer (if used). Use shielded, twisted-pair
wire.
Load Sharing Lines
Connect the wiring for the load sharing lines. Use shielded, twisted-pair wire.
Load Sharing lines are not required if the Load Sharing Module is to be used in
the droop mode only.