9440300990 Rev J
11
DECS-250
Power Stage
Power Stage
The DECS-250 supplies regulated dc excitation power to the field of a brushless exciter. Excitation power
is supplied at terminals F+ and F–.
DECS-250 power stage operating power accepts single- or three-phase ac power from a transformer or
PMG. DC power from the station batteries or the armature of a dc exciter is also acceptable. Power stage
operating power is applied at terminals A, B, and C. The GND terminal serves as a ground connection.
The DECS-250 power stage supplies excitation power by means of a filtered, switching power module
that uses pulse-width modulation. It is capable of supplying 15 Adc continuously at nominal voltages of
32, 63, or 125 Vdc. With nominal operating voltage applied, it has a forcing capability of 30 Adc for 10
seconds.
Nominal DECS-250 operating power levels include 60 Vac for a 32 Vdc continuous exciter field
requirement, 120 Vac or 125 Vdc for a 63 Vdc requirement, or 240 Vac or 250 Vdc for a 125 Vdc
requirement.
Содержание DECS-250
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Страница 20: ...4 9440300990 Rev J Introduction DECS 250 ...
Страница 28: ...12 9440300990 Rev J Power Stage DECS 250 ...
Страница 32: ...16 9440300990 Rev J Voltage and Current Sensing DECS 250 ...
Страница 40: ...24 9440300990 Rev J Synchronizer DECS 250 ...
Страница 52: ...36 9440300990 Rev J Auxiliary Control DECS 250 ...
Страница 56: ...40 9440300990 Rev J Contact Inputs and Outputs DECS 250 ...
Страница 84: ...68 9440300990 Rev J Limiters DECS 250 ...
Страница 108: ...92 9440300990 Rev J Power System Stabilizer DECS 250 Figure 85 PSS Function Blocks and Software Switches ...
Страница 114: ...98 9440300990 Rev J Power System Stabilizer DECS 250 Figure 96 PSS Parameter Settings ...
Страница 124: ...108 9440300990 Rev J Stability Tuning DECS 250 ...
Страница 126: ...110 9440300990 Rev J Mounting DECS 250 Figure 103 Overall and Projection Mounting Dimensions ...
Страница 127: ...9440300990 Rev J 111 DECS 250 Mounting Figure 104 DECS 250 Escutcheon Plate Dimensions ...
Страница 128: ...112 9440300990 Rev J Mounting DECS 250 Figure 105 Panel Cutting and Drilling Dimensions for DECS 250 Panel Mounting ...
Страница 198: ...182 9440300990 Rev J Timekeeping DECS 250 ...
Страница 210: ...194 9440300990 Rev J CAN Communication DECS 250 ...
Страница 304: ...288 9440300990 Rev J Maintenance DECS 250 ...
Страница 316: ...300 9440300990 Rev J Specifications DECS 250 ...
Страница 334: ...318 9440300990 Rev J Analog Expansion Module DECS 250 ...
Страница 341: ...9440300990 Rev J 325 DECS 250 Contact Expansion Module Figure 188 CEM 2020 Input Contact and Output Contact Terminals ...
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