Lambda / TDK / EMI EMHP400

The Lambda / TDK / EMI EMHP400 is a high-power DC power supply utilizing regulated SCR phase control topology for constant voltage and constant current delivery with automatic crossover. Engineered for industrial applications demanding significant raw power with dependable performance, the EMHP400 operates from three-phase AC input and includes built-in RFI protection, comprehensive metering, and multiple safeguard mechanisms. Note: TDK-Lambda recommends the Genesys™ or GENESYS+™ series for new designs.

Technical Specifications Input

Three-phase AC input: 460 VAC ±10%, 50/60 Hz

Operating range: 440–480 VAC

Phase-to-phase balance requirement: ±2% for ripple specification Output

Power range: 20 kW to 90 kW

Output voltage: 0–10 V to 0–600 V (model-dependent)

Output current: 0–30 A to 0–1000 A (model-dependent)

Output ripple: 50–400 mV RMS depending on configuration

Line and load regulation: ±0.1% (line ±10%, load 50–100%)

Voltage/current stability: ±0.05% over 8 hours with constant external conditions Control & Protection

Constant voltage/constant current regulation with automatic crossover

Output modulation via SCR conduction angle control

Overvoltage, overtemperature, and overcurrent protection

Circuit breaker protection

Contactor on/off interlock control

Key Features

L/C filtered rectified DC output for low ripple performance

Forced air cooling

Fully metered with mode indicator lights

Lifting eye-bolt provisions for transport

SCR phase control topology for precise output regulation

Typical Applications Industrial power delivery, electroplating, metal processing, and high-current testing environments requiring stable DC output with minimal ripple and fast dynamic response.

Compatibility & Integration Three-phase AC mains connection. External voltage and current control inputs available for remote operation and integration into automated test systems.