The Lambda/TDK EMI TCR250T20 is a 5 kW SCR phase-controlled DC power supply delivering 20 V at 250 A for demanding industrial and laboratory applications. This unit combines constant voltage and constant current modes with automatic crossover, delivering output voltage regulation better than 0.1% across 5–100% load variations. The supply features soft-start AC input, low output ripple, and high operating efficiency across a 208/220 VAC input range (190–253 V, 47–63 Hz). Internal RFI filtering with ferrite toroidal chokes and VDE-listed capacitors ensures compliance with VDE 875 Level N and VDE 871 Level A standards. Fan-cooled with horizontal air ducting, the unit operates continuously from 0°C to 40°C and includes thermostat protection plus high dielectric withstand ratings (2500 V rms primary to secondary and chassis).
Technical Specifications
• Output voltage: 20 V
• Output current: 250 A
• Output power: 5000 W (5 kW)
• Input voltage: 208/220 VAC (190–253 V range)
• Input frequency: 47–63 Hz
• Input current (full load): 23 A
• Voltage regulation (CV mode): <0.1% for load variations 5–100% of maximum rating
• Temperature coefficient (voltage): 0.02%/°C of maximum output voltage
• Temperature coefficient (current): 0.03%/°C of maximum output current
• Operating temperature: 0°C to 40°C continuous duty
• Storage temperature: –40°C to +85°C
• Dielectric withstand: 2500 V rms (primary to secondary and chassis)
– Key Features
• SCR phase-controlled regulation with automatic CV/CC crossover
• Soft-start AC input eliminates magnetic inrush transients
• Internal RFI filter with ferrite toroidal chokes; VDE 875 Level N and VDE 871 Level A compliant
• Load regulation ≤0.1% (50–100% of maximum rating) and ≤0.05% of maximum output (below 50% output voltage)
• Series and parallel master/slave operation supported
• Low output ripple with high efficiency conversion
• Fan-cooled with horizontally ducted air circulation
• Covered input, output, and programming terminals for operator safety
– Typical Applications
• Electroplating and metal finishing
• Materials testing and laboratory research
• Industrial power conversion systems
• Battery charging and conditioning
– Compatibility & Integration
Common programming interface with TDK-Lambda three-phase TCR models, EMHP, and HCR series units. Phase rotation not required.
