Description
SAM ELECTRONICS DEM401
Technical Specifications:
- Sensing: Single/three-phase voltage and current measurement
- Regulation Accuracy: ±0.3% of rated generator voltage
- Control Power: 24VDC / 110/230VAC
- Excitation Output: PWM power drive, continuous field current 12A DC
- Communication: Serial interface for parameter setup and data monitoring
- Operating Temperature: -25℃ ~ +70℃
- Vibration Resistance: Compliant with marine vibration standard
- Humidity: 5%~95% non-condensing
Function Features:
- Automatic generator voltage regulation
- V/Hz protection, overcurrent and underfrequency protection
- Adjustable droop for generator parallel operation
- Soft voltage build-up during generator start
- Internal fault self-diagnosis function
- Parameter adjustable via service software
- Strong vibration and shock resistance for marine application
Application Scenarios:
- Marine main and auxiliary generator excitation control
- Offshore platform power generation systems
- Industrial standby generator sets
- Mobile power station equipment
Material Composition:
- Housing: Reinforced aluminum alloy metal casing
- PCB: FR4 fiberglass circuit board with anti-coating for damp environment
- Core Components: Industrial microcontroller, power semiconductors
- Terminals: Vibration-resistant screw terminals
Structural Features:
- Compact metal enclosure for cabinet panel mounting
- Status LED indicators on front panel
- Separated terminal blocks for sensing, power and excitation output
- Reinforced internal structure for shock and vibration resistance
Working Principle: The module samples generator voltage and current signals continuously. Internal microcontroller compares actual voltage against setpoint and adjusts PWM output to control exciter field current. Built-in protection functions monitor operating parameters and trigger limiting action when parameters exceed safe threshold.
Installation Requirements:
- Install inside vibration-damped electrical cabinet
- Maintain good ventilation for heat dissipation
- Separate signal cables and high-current power cables
- Use shielded cables for voltage sensing signals
- Follow marine installation grounding specification for offshore projects
Usage Notes:
- Verify generator exciter rating before commissioning
- Prevent water vapor and salt spray corrosion in marine environment
- Regularly check terminal tightness under vibration working condition
- Do not apply overvoltage to sensing input
- Disconnect power before opening enclosure
