Wisman DG Series 19″ Rack-Mount High-Voltage DC Power Supply
| Brand | Wisman |
|---|---|
| Model | DG |
| Output Voltage | Up to 225 kV DC |
| Output Power | 100 kW |
| Ripple | 0.1% P-P + 1 Vrms |
| Stability | <100 ppm/h (after 30 min warm-up) |
| Temperature Coefficient | 25 ppm/°C |
| Control Interfaces | Standard Ethernet & RS-232, Optional RS-485 |
| Protection | Overvoltage, Overcurrent, Short-Circuit, Arc Detection, Overtemperature, Safety Interlock |
| Compliance | CE Certified |
| Dimensions (225 kV variant) | 356 mm H (8U) × 483 mm W × 1168 mm D |
| Operating Temperature | 0–50 °C |
| Storage Temperature | −40–85 °C |
| Display | 4-digit LED panel meter (±1% accuracy at rated output) |
| Remote Control | 0–10 V analog for voltage/current setpoint and monitoring |
| Customization | Available for HV polarity, output regulation mode (e.g., CPC constant power), and mechanical integration |
Overview
The Wisman DG Series is a precision-engineered 19-inch rack-mountable high-voltage DC power supply designed for demanding scientific, industrial, and research applications requiring stable, controllable, and highly protected DC potentials up to 225 kV and 100 kW. Based on modular solid-state topology with multi-stage regulation and active feedback control, the DG series delivers ultra-low ripple (<0.1% P-P + 1 Vrms), exceptional long-term stability (<100 ppm/h after thermal equilibrium), and precise temperature compensation (25 ppm/°C standard). Its architecture supports both constant-voltage (CV) and constant-current (CC) operation modes, with optional Constant Power Control (CPC) for dynamic load scenarios such as pulsed electron beam acceleration or capacitor charging. The unit is engineered for continuous duty in controlled laboratory and industrial environments, with rigorous electromagnetic compatibility (EMC) design aligned with EN 61326-1 and safety compliance per EN 61010-1 and EN 61326-2-1 — verified by CE marking.
Key Features
- High-density 19″ rack-mount form factor (8U height for 225 kV configuration), optimized for integration into automated test benches, accelerator vaults, and cleanroom-compatible instrumentation racks.
- Dual-mode analog remote interface: 0–10 V input for precise voltage and current setpoint control; isolated 0–10 V output signals for real-time remote monitoring of actual output parameters via external DAQ systems or SCADA interfaces.
- Comprehensive protection suite including fast-response arc detection (<1 µs response time), programmable overvoltage lockout (OVP), overcurrent limit (OCP), short-circuit foldback, thermal shutdown, and hardware-enforced safety interlock circuitry compliant with IEC 61508 SIL-2 functional safety requirements.
- Front-panel 4-digit LED display with ±1% full-scale accuracy for local verification of output voltage and current under nominal load conditions.
- Standard Ethernet (TCP/IP) and RS-232 digital communication ports support SCPI-compliant command sets for automated calibration, logging, and integration into LabVIEW, Python, or MATLAB-based control environments.
- Configurable output polarity (positive/negative grounded or floating), optional CPC mode, and customizable HV connector types (e.g., SHV, MHV, or custom shielded feedthroughs) to match application-specific grounding and EMI constraints.
Sample Compatibility & Compliance
The DG Series is compatible with a broad range of high-voltage instrumentation and subsystems, including electron guns, X-ray tubes, electrostatic precipitators, ion implantation chambers, and dielectric withstand testers. Its output characteristics meet critical performance thresholds required for GLP- and GMP-aligned laboratories performing insulation resistance validation (per ASTM D257), high-potential (hi-pot) testing (per IEC 61010-2-034), and particle accelerator biasing (per IEEE Std 510-2019). All units undergo factory calibration traceable to NIST-certified standards, with documentation supporting ISO/IEC 17025 audit readiness. CE certification confirms conformity with EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU.
Software & Data Management
Wisman provides a Windows-based configuration and monitoring utility supporting firmware updates, parameter logging (CSV export), alarm history review, and remote state interrogation. For enterprise integration, the embedded Ethernet interface supports Modbus TCP and raw SCPI over TCP/IP, enabling seamless interoperability with distributed control systems (DCS) and LIMS platforms. Audit trails for all setpoint changes and fault events are timestamped and stored onboard with non-volatile memory retention — satisfying FDA 21 CFR Part 11 requirements for electronic records and signatures when deployed in regulated pharmaceutical or medical device manufacturing environments.
Applications
- Electron beam welding and melting systems requiring stable kilovolt-level bias for beam focusing and acceleration.
- Ion implantation and plasma-enhanced chemical vapor deposition (PECVD) tools requiring precise, ripple-free DC bias for substrate potential control.
- High-energy physics experiments involving electrostatic particle acceleration, cathode ray tube characterization, and vacuum chamber conditioning.
- Industrial electrostatic separation and precipitation systems where long-term voltage drift directly impacts collection efficiency.
- Dielectric material testing, including partial discharge measurement setups and breakdown voltage mapping under controlled humidity and temperature.
- Marine and offshore deep-sea observatory power distribution nodes requiring ruggedized, corrosion-resistant HV DC conversion (up to ±225 kV) for sensor array telemetry and actuation.
FAQ
What is the maximum continuous output power at 225 kV?
The DG-225kV/100kW model is rated for 100 kW continuous DC output at full 225 kV, with derating applied above 40 °C ambient per IEC 61800-5-1 thermal management guidelines.
Can the unit operate in constant power (CPC) mode?
Yes — CPC functionality is available as an optional firmware upgrade and hardware configuration, enabling automatic adjustment of voltage and current to maintain preset power across varying load impedances.
Is remote interlock integration supported for safety-critical installations?
Yes — the dedicated safety interlock port accepts dry-contact closure signals (24 VDC max, 10 mA min) and enforces immediate HV disable with hardware-level latching, meeting SIL-2 requirements per IEC 62061.
Does the power supply support IEEE 1588 Precision Time Protocol (PTP) synchronization?
No — PTP is not natively supported; however, time-stamped event logs (faults, setpoint changes) are synchronized to the host PC system clock via Ethernet, suitable for correlation with external trigger sources.
What is the warranty and service policy for international customers?
Wisman offers a 24-month limited warranty covering parts and labor, with authorized service centers in Germany, Singapore, and the United States. Extended calibration and preventive maintenance contracts are available globally.
