Spellman RHR20PN120

The Spellman RHR20PN120 is a high voltage DC power supply engineered for precision applications in laboratory, industrial, and research environments. It delivers continuously adjustable output voltage from zero to maximum rated voltage with exceptional load and line regulation, automatic current limiting, and comprehensive protection against overload, short circuit, and arc-over conditions. The unit combines precise metering, remote control capability, and reliable operation across demanding temperature ranges.

– Technical Specifications

• Output Voltage: Continuously adjustable from zero to maximum rated voltage
• Voltage Regulation: Load regulation 0.01% +1 V (full load change); Line regulation ±0.01% +1 V (±10% input voltage change)
• Ripple: 0.02% + 2 V RMS
• Stability: 0.02% + 2 V per hour; 0.05% + 5 V per eight hours
• Input Voltage: 105–125 V AC, 50–60 Hz, single phase (alternative input voltages available on request)
• Current Limit: Approximately 110% of rated load (standard on all models)
• Polarity: Positive (P), Negative (N), or Reversible (PN) with respect to ground
• Operating Temperature: −20°C to +55°C
• Storage Temperature: −40°C to +85°C
• Cooling: Fan cooled

– Key Features

• Ten-turn potentiometer with locking read-out dial for precise output adjustment
• Single-range voltmeter (2% accuracy) and ammeter (2% accuracy)
• Automatic current limiting protects against overload conditions
• Ten-foot shielded high voltage output cable with removable plug (models up to 120 kV DC)
• Remote Voltage Control (RVC) option: external 0–6 VDC signal or external potentiometer
• Remote Resistance Control (RC) option for output current and high voltage management
• Remote Monitor Terminals (TP) for voltage and current monitoring

– Typical Applications

Laboratory research, industrial testing, high voltage conditioning, and precision measurement environments requiring stable, adjustable DC output with integrated protection and remote control.

– Compatibility & Integration

Remote control and monitoring options enable integration into automated test systems. Standard AC input accommodates typical laboratory infrastructure. Polarity selection (P/N/PN) provides flexibility for diverse circuit configurations.