Brand: WoodWard
Model number:8239-065
Colour:new
Warranty: 12 months
Lead Time:3-day working day
Country of origin: USA Price: Please contact us
Product weight:0.85kg
Shipping Port: China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
8239-065 WOODWARD
One side of the secondary of all CTs must be earthed. The earth connection should be made on the side of the secondary facing the protected object. The polarity of the CTs must be in accordance with the following diagram.
Droop Contact (Isoch-Droop) and Load Sharing Lines
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. When all controls in the system are of the
2301A type, the shields may be connected continuously between controls. When
load sharing with different controls, do not connect the shields at the point where
connections are made to the load-sharing-line bus.
The droop contact for selecting droop or isochronous operation is wired in series
with the circuit-breaker auxiliary contact between terminal 14 and terminal 16
(terminal 0 on high-voltage controls). When both the droop contact and circuitbreaker auxiliary contact are closed, the control is in the isochronous loadsharing mode (Figure 2-3, A). 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 circuitbreaker auxiliary contact is open (Figure 2-3, B). If the droop contact is open, the
control remains in the droop mode even when the circuit-breaker auxiliary
contact is closed.
Figure 2-3. Droop Contact and Circuit Breaker Auxiliary Contact
The control is in the droop mode whenever the circuit-breaker
auxiliary contact is open. If a single prime mover is required to run
isochronously with an isolated load, turn the DROOP potentiometer
fully counterclockwise (be careful not to overtorque the pot).
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