The Lambda/TDK EMI ESS80-125-2-D-RSTL is a 10–15 kW programmable DC power supply engineered for industrial OEM and laboratory environments requiring high density and precision regulation. It delivers constant voltage and constant current operation with automatic crossover, supported by front-panel 10-turn potentiometers for voltage and current adjustment. The unit accepts three-phase AC input at 208 VAC, 380 VAC, 400 VAC, 415 VAC, or 480 VAC with passive power factor correction (0.9 typical) and achieves 85–91% efficiency depending on model configuration.
## Technical Specifications
**Input & Power**
• Three-phase AC input: 208 VAC, 380 VAC, 400 VAC, 415 VAC, 480 VAC (5-wire required for 380 VAC and above)
• Output power: 10–15 kW (model dependent)
• Power factor: 0.9 typical
• Efficiency: 85–91% (model dependent)
**Electrical Performance**
• Single output with constant voltage/constant current and automatic crossover
• Line regulation: 0.1% (CV mode)
• Load regulation: 0.1% (CV mode, 0–100% load)
• Ripple & noise: 50–300 mV peak-to-peak (model dependent)
• Transient response: 650 µs for 30% load change (models to 20 VDC); scales by Vmax/20 for higher voltages
• Stability: ±0.05% maximum deviation over 8 hours (constant line, load, temperature)
• Temperature coefficient: 0.02% per °C (voltage), 0.03% per °C (current)
• Dielectric withstanding voltage: 2500 VDC (primary to secondary)
**Mechanical & Environmental**
• Integral cooling fan
• Operating temperature: 0°C to +50°C (4% derating per °C above 50°C)
• Storage temperature: -55°C to +85°C
## Key Features
• Analog programming and monitoring via optional RS232/IEEE 488 interface (RSTL option)
• Simultaneous front-panel voltage and current metering
• Software-selectable local and remote programming control
• 8-bit trim DACs for ±10% channel adjustment
• Resistance or voltage programming capability
• Five-year warranty
• Manufactured in ISO9001 certified facility
## Typical Applications
Industrial power conditioning, OEM equipment integration, and laboratory test and measurement systems requiring stable, regulated DC output with precision current limiting.
## Compatibility & Integration
The RSTL controller board enables computer-based programming and measurement through RS232/IEEE 488 connectivity. This supply is defined as a component for apparatus composition under EMC Directive 89/336/EEC. TDK-Lambda recommends Genesys™ or GENESYS+™ series for new design implementations.
