The Lambda / TDK EMI TCR7.5S70 is a fan-cooled DC power supply engineered for precision voltage and current regulation across laboratory, industrial, and ATE applications. Built-in RFI/EMI filtering using ferrite toroidal chokes and VDE-listed capacitors minimizes conducted emissions. The unit delivers exceptional load and line regulation, tight temperature stability, and high dielectric isolation—making it suitable for sensitive test environments requiring clean, stable power delivery.
Technical Specifications
Input & Output
• Input voltage range: 190–253 V AC (5 kW and 10 kW models); 105–130 V AC (2.5 kW models)
• Output ripple (5 Hz–1 MHz): Less than 450 mA r.m.s. at 25°C ± 5°C
• Efficiency: Up to 89%
• Soft-start enabled to prevent inrush current
Regulation & Stability
• Line regulation: Less than 0.01% of rated output current + 2 mA
• Load regulation: Less than 0.02% of rated output current + 5 mA
• Load effects (constant voltage mode): Output voltage variation less than 0.1% (50%–100% output) or 0.05% (below 50% output)
• Load effects (constant current mode): Output current variation less than 0.1% (50%–100% output) or 0.05% (below 50% output)
• Output voltage temperature coefficient: 0.02%/°C of maximum rating
• Output current temperature coefficient: 0.03%/°C of maximum rating
Environmental & Dielectric
• Operating temperature: 0°C to 40°C continuous duty
• Storage temperature: −40°C to +85°C
• Dielectric withstand (primary to secondary, chassis): 2500 V r.m.s.
• Isolation resistance: Greater than 100 MΩ at 25°C, 70% RH (output to ground at 500 V DC)
AC Input Requirements
• Phase rotation: Not required
• Phase-to-phase voltage balance: ±2% optimal; larger deviations accommodated by recalibration
– Key Features
• Internal RFI filter with ferrite toroidal chokes and “X” and “Y” VDE-listed capacitors
• Ducted fan cooling prevents thermal spreading to adjacent equipment
• Local/remote control via electrical signal or dry contact
• Selectable control modes for flexible system integration
– Typical Applications
• Laboratory power testing and equipment characterization
• Industrial process power conditioning
• Automatic test equipment (ATE) systems
• Applications demanding low EMI and high output stability
– Compatibility & Integration
Remote operation configured between 0–0.6 V or short circuit; local control selectable via dry contact. Phase rotation independence simplifies three-phase input installation.
