High Voltage Solutions
ES Series
Bench-Top High Voltage Power Supplies
Compact bench-top high voltage power supplies for scientific and industrial systems. Sixty standard voltage/power combinations cover 5 to 100 kV and 5 to 60 W, with fixed or reversible polarity and application-specific controls.

5-100 kVOutput range
5-60 WPower options
90-240 VACUniversal input
P / N / ROutput polarity
Key capabilities
- Compact, cost-effective bench-top design
- Low stored energy with arc-over and short-circuit protection
- Continuously adjustable from zero to rated output
- Digital voltage and current metering standard; analog metering optional
- Optional remote programming, monitoring, and RS-232C interface
Typical applications
- Electrostatic precipitators
- Electrospinning
- Electrochemical processes
- Insulation testing
- Scientific and industrial laboratory systems
Standard model guide
| Model | Output voltage | 60 W | 50 W | 30 W | 20 W | 10 W | 5 W |
|---|---|---|---|---|---|---|---|
| ES5 | 0-5 kV | 12 mA | 10 mA | 6 mA | 4 mA | 2 mA | 1 mA |
| ES10 | 0-10 kV | 6 mA | 5 mA | 3 mA | 2 mA | 1 mA | 500 µA |
| ES15 | 0-15 kV | 4 mA | 3.3 mA | 2 mA | 1.33 mA | 600 µA | 333 µA |
| ES20 | 0-20 kV | 3 mA | 2.5 mA | 1.5 mA | 1 mA | 500 µA | 250 µA |
| ES30 | 0-30 kV | 2 mA | 1.66 mA | 1 mA | 660 µA | 350 µA | 166 µA |
| ES40 | 0-40 kV | 1.5 mA | 1.25 mA | 750 µA | 500 µA | 250 µA | 125 µA |
| ES50 | 0-50 kV | 1.2 mA | 1 mA | 600 µA | 400 µA | 200 µA | 100 µA |
| ES60 | 0-60 kV | 1 mA | 833 µA | 500 µA | 330 µA | 166 µA | 85 µA |
| ES75 | 0-75 kV | 800 µA | 660 µA | 400 µA | 266 µA | 133 µA | 66 µA |
| ES100 | 0-100 kV | 600 µA | 500 µA | 300 µA | 200 µA | 100 µA | 50 µA |
Choose a voltage and power rating from the table; available power suffixes are -5W, -10W, -20W, -30W, -50W, and -60W. Add P or N for fixed polarity or R for reversible polarity. Reversible-polarity models use the larger enclosure.
Specifications
Electrical characteristics
Input90-240 VAC, 50-60 Hz
Output voltageContinuously adjustable from zero to rated maximum
Output currentPer model and selected power level
Line regulation0.05% for ±10% line change
Ripple0.1% through 20 W; 0.25% for 30-60 W
ControlFront-panel 10-turn potentiometer
MeteringTwo digital panel meters standard: output voltage and output current
Mechanical and interface
Output cableMating cable supplied
TerminationAlden-type polyethylene through 40 kV; coaxial above 40 kV
EnclosureP/N fixed polarity: nominal 5 x 8 x 10 in; R reversible polarity: nominal 5 x 14 x 10 in
WeightUp to 15 lb, depending on voltage, power, polarity, and selected options
PolarityP positive, N negative, or R reversible; dual-output versions also available
ConstructionPortable bench-top enclosure
Configuration and options
Integration
- Front-panel 10-turn voltage control
- Two digital panel meters are standard: voltage and current
- Analog-meter configurations are optional
- Ground-referenced programming and monitoring
- Dual-output and R reversible-polarity configurations available
Available options
- Output Voltage Monitor (VM)
- Dual Analog Meters (DAM)
- Overload Trip (OL)
- RS232C Interface (RS232C)
- External Program (PRG)
How to order
FormatES[Voltage][Polarity]-[Power]
ExampleES30N-5W30 kV | Negative | 5 W
CodesP = positive N = negative R = reversible
Mechanical drawings
Dimensions are in inches unless otherwise noted. Contact Gamma to confirm the final enclosure and connector arrangement for your configuration.


ES Series resources
Download the data sheet or contact Gamma for configuration assistance.