Gandras Energoefektas

DECS-200

The microprocessor based DECS-200 is a total excitation control system in one enclosure. It contains all the functionality necessary to limit, control, and protect a generator from operating outside of the machine’s capability. An optional feature of DECS-200’s sophisticated design allows the nonactive control mode within the unit to follow the active mode, permitting bumpless transfer between modes.

DECS-200 has four operating conditions:

• Adjustment of a current of excitation (FCR / manual)
• Automatic adjustment of pressure (AVR)
• Adjustment of jet capacity (VAR)
• Adjustment of Power factor  (PF)

Features

• Microprocessor-based design
• True RMS sensing, single or three phase
• 32Vdc, 63Vdc, and 125Vdc outputs at 15Adc
• 0.25% Voltage Regulation Accuracy
• Setup from front panel HMI or by PC with Windows® setup software included
• 20 standard stability selections
• User customizable stability selection
• Paralleling compensation
• Underfrequency compensation or V/Hz Ratio Limiter
• Soft start buildup
• Field Current Regulation Mode (Manual Mode)
• Autotracking between operating modes and between DECS-200 units (optional)
• Minimum Excitation Limiter (Internally generated or customizable)
• On and off-line Maximum Excitation Limiters
• Stator Current Limiter
• Var and Power Factor Controllers
• Exciter Diode Monitoring (EDM)
• Sequence of Events Recording
• Oscillography (continued on next page)

Operating condition
System DECS-200 is recognised UL, is confirmed CSA, and corresponds to standards CE. DECS 200 also it is confirmed for use in navy fleet in conditions when loadings SCR can generate transitive hindrances.

The system has a range of working temperatures from-40°C to +60°C without deterioration of target parametres.

System DECS-200 also bears blow to 20 G and vibration 5 G on frequency of 500 Hz.