9905-372

About the 9905-372

Environmental specifications for the 9905-372 are:

• Operating temps: –40 to +70 °C (-40 to 158 F)
• Storage temps: –55 to +105 °C (-67 to 221 F)
• Humidity: 95% at 38 °C
• Mechanical shock: US MIL-STD 810C, Method 516.2, Procedures I, II, V
• Electromagnetic susceptibility: ANSI/IEEE C37.90.2; ANSI C37.90.1-1989
• Vibration: US MIL-STD 167, Type I

This device has an Open Delta PT Configuration, a 500 Hz PWM Speed Bias, and a 120 Vac Input Voltage. Extra functions of Woodward model 9905-372 are:

• Built-in diagnostics
• Setup, metering, and diagnostic capability through a handheld programmer terminal
• Automatic generator loading and unloading
• Droop, baseload, and isochronous load control capability
• Reverse power relay.

This model offers phase matching or slip frequency synchronizing. With both methods, a minimum phase difference between generator and bus at actual breaker closure is anticipated by using actual slip frequency and breaker delay values. Model 9905-372 has an automatic dead-bus closure function, where only one DSLC control is granted dead-bus closing permission through locking techniques over the communications network.