The Lambda/TDK TCR20S30-1-D is an SCR phase-controlled regulated DC power supply delivering 20 VDC at 30 ADC (600 W) for industrial applications requiring stable, low-ripple output. The unit transitions between constant voltage and constant current regulation modes, controlled locally or remotely. Double L/C filtering minimizes ripple while the design achieves high power density and significantly reduced line-conducted RFI compared to earlier SCR models, meeting VDE 875 Level N and VDE 871 Level A standards.
Technical Specifications
Output Performance
• Output: 20 VDC, 30 ADC, 600 W
• Output ripple: Low (double L/C filtering)
• Regulation (CV mode, 50–100% rating): <0.1% voltage variation; below 50% rating: <0.05% of maximum output
• Regulation (CC mode, 50–100% rating): <0.1% current variation; below 50% rating: <0.05% of maximum output
Input
• Standard: 208–220/230 V AC, 3Ø, 47–63 Hz
• Operating range: 190–253 V phase-to-phase
• Phase rotation: Not required
• Phase-to-phase voltage balance: ±2% required for ripple specification
• Optional inputs: 380 V 50 Hz, 415 V 50 Hz, 440–460–480 V (414–505 V), 240 V 60 Hz, 230 V 50 Hz, 200 V 50 Hz
Protection
• Dielectric withstand: 2500 V rms (primary to secondary and chassis)
• Overcurrent protection
• Short-circuit protection
• Thermostat protection for critical circuits
• Input circuit breaker (UL-rated)
• Overvoltage protection add-on available
– Key Features
• 10-turn voltage control (local)
• One-turn current control (local)
• AC on/off switch
• Remote programming via external resistance, voltage, or current
• Programming sensitivity: 5000 Ω, 5 V, or 1 mA
• High efficiency
• High power-per-cubic-inch density
– Typical Applications
Demanding industrial environments requiring regulated DC power with automatic CV/CC mode switching and low output ripple.
– Compatibility & Integration
Local and remote control options enable integration into both standalone and automated systems. Multiple AC input configurations available for global deployment.
