DECS-200N
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DECS-200N
The DECS-200N is a multi-microprocessor based Negative Forcing Digital Excitation Control System designed into one complete compact package. This space-saving design consists of all the functionality needed to control, limit and protect a generator from operating outside the machine’s capability.
The DECS-200N also incoporates four control modes of operation: 
- Automatic Voltage Regulation (AVR)
- Field Current Regulation (FCR, Manual)
- Volt Amp Reactive (Var)
- Power Factor (PF) control
Features
- Multiple microprocessor-based design
- True RMS sensing, single or three phase
- ±0.25% Voltage Regulation Accuracy
- 63 Vdc and 125 Vdc output capability up to 20 Adc continuous
- Built-in 6 SCR power bridge
- Negative field forcing
- Highly compact design
- High initial response
- Soft start buildup
- Var and Power Factor operating modes with Autotracking
- Autotracking between operating modes and between dual DECS-200Ns
- On and off-line Overexcitation Limiter
- Customizable Underexcitation Limiter
- Stator Current Limiting
- Underfrequency compensation or V/Hz Ratio Limiter
- Field flashing control provisions
- Paralleling provisions
- Generator Protection
- Exciter Diode Monitoring (EDM)
- Oscillography and Sequence of Events Recording
- Voltage Matching
- 5 Programmable output contacts
- ModbusTM protocol via RS-485 communications
Operating conditions
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.