Lambda / TDK / EMI TCR40T250

The Lambda / TDK EMI TCR40T250 is a 10 kW SCR phase-controlled regulated DC power supply engineered for industrial and laboratory applications requiring stable, low-ripple power delivery. This unit operates in constant voltage and constant current modes with automatic crossover, maintaining tight regulation across load variations. Internal RFI filtering with ferrite toroidal chokes and VDE-listed capacitors ensures compliance with VDE 875 Level N and VDE 871 Level A standards.

– Technical Specifications

Electrical Output
• Output voltage: up to 40 V
• Output current: up to 250 A
• Power: 10 kW
• Input: 3-phase, 208 V (180–253 Vac, 47–63 Hz)
• Input current: approximately 22 A
• Efficiency: up to 92%
• Active power factor correction: 0.99 typical

Regulation & Stability
• Constant voltage mode: ≤0.1% variation (50–100% output voltage, 5–100% load current); ≤0.05% variation below 50% output
• Constant current mode: equivalent specifications
• Output voltage temperature coefficient: 0.02%/°C of maximum rating
• Output current temperature coefficient: 0.03%/°C of maximum rating

Thermal & Environmental
• Operating ambient: 0–40°C (10% current derating at 40°C)
• Storage temperature: -40–+85°C
• Cooling: forced air with horizontal ducted airflow
• Dielectric withstand: 2500 V rms (primary to secondary and chassis)

– Key Features

• Constant voltage/constant current with automatic mode crossover
• Low output ripple and noise
• Soft-start input circuitry prevents inrush current
• Horizontal airflow design permits zero-unit stacking
• Controlled fan speed reduces noise and extends component life
• Internal RFI filtering meets VDE emissions standards

– Typical Applications

Industrial electroplating, anodizing, metal finishing, research laboratories, and test environments requiring precise DC regulation and high current delivery.

– Compatibility & Integration

Three-phase 208 V AC mains input. Models in the TCR series support alternative input voltages (115 V, 208/220 VAC) and extended output ranges (up to 600 V, 1000 A).