Manual 37443A DSLC-2 - Digital Synchronizer and Load Control
Page 172/226 © Woodward
Var Sharing
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When either var or power factor control is configured and the DSLC-2 control is operating in isochronous load
sharing mode, var sharing is automatically selected. Var sharing adjusts the voltage regulators so that all genera-
tors carry the same proportion of reactive load by balancing the kvar on all units. A Voltage reference setpoint,
Menu 4 (parameter 5600) is provided to define the isolated operating voltage. The voltage trim feature is active in
load sharing mode. The DSLC-2 will control the voltage as well as the var sharing.
Power Factor Control
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The power factor control adjusts generator voltage to maintain a constant power angle throughout the kW operat-
ing range. A setpoint is provided to set the desired Power factor reference (parameter 5620). The power factor
control function may be enabled with the VAR PF control mode selection setpoint (parameter 7558). The current
power factor setting can be influenced by the “Voltage Raise” and “Voltage Lower” contacts.
When both the “Voltage Raise” and “Voltage Lower” contacts are closed, the analog reactive load input (power
factor setpoint) becomes active. So the reactive load setting input, configurable in Menu 6.1, will take precedence
over the internal power factor reference. The input signal is automatically converted into a power factor value be-
tween -0,710 (leading) to 1 to 0,710 (lagging).
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