SpellmanHV SLS 2000W High Voltage Power Supplies (Featured Image)

SLS Series

  • 160kV - 360kV Outputs
  • Low Ripple, High Stability
  • Overcurrent, Overvoltage and Arc Protection
  • Lightweight, Compact Size

*Note: All specifications are subject to change without notice. Please consult the English PDF version of this datasheet for the most up-to-date revision.

2000W High Voltage Power Supplies

The SLS series of high voltage power supplies provide up to 2000 watts of power with voltage outputs ranging from 160kV to 360kV.  These power supplies utilize high frequen­cy resonant inverters with proprietary controls for reliable operation in extreme environments. The high voltage multi­plier unit is built with a hybrid design of solid encapsulation and air, thus reducing its overall size. Comprised of 20kV interlocking wafers, the multiplier unit offers flexible building blocks for many different output configurations.

Typical applications:

  • Ion Implantation
  • Particle Accelerators
  • Electron Guns


(Ref. 128016-001 REV. N)


eSL   Ethernet Connectivity/VFD Front Panel

Input Voltage:

Standard: 220Vac ±10%, 50/60Hz @ 8A/phase, three phase

Optional: 200Vac ±10%, 50/60Hz @ 8.9A/phase, three phase

Output Voltage Range:

Models available from 160kV to 360kV and up 
to 2000W. Each model is available with positive 
or negative polarity outputs.

Voltage Regulation:

Better than 0.05% for specified line variations 
and load variations.


0.1% p-p of maximum output voltage. 
Remote Voltage Control:

0 to +10V for 0 to maximum voltage. Accuracy and 
repeatability: 1% of maximum rating.

Remote Current Control:

0 to +10V for 0 to maximum voltage. Accuracy and 
repeatability: 1% of maximum rating.

Voltage Monitor:

0 to 10V equivalent to rated voltage. Accuracy, 1% reading. 
Current Monitor:

0 to 10V equivalent to rated current. Accuracy, 1% reading.


0.05% per hour after 1/2 hour warm-up.

0.05% per 8 hours.

Slow Start:

Slow start times: 6 seconds standard.

Temperature Coefficient: 

0.01% per degrees C.


Overcurrent, Overvoltage, Arc protection, Overtemperature.

Arc Detect:

If 8 arcs occur in a 10 second, non-synchronous time window, the supply reverts to the Power Down Mode with an ARC fault displayed on the front panel default diagnostic display.


Temperature Range:

Operating: 0°C to 40°C

Storage: -20°C to 85°C


10% to 70%, non-condensing.


Inverter Driver Chassis:

3.50”(2U)H x 19.0”W x 19.0”D (8.9cm x 48.3cm x 48.3cm)

Multiplier Unit:

Depends on model specified.

Distance from Stack to Driver:

2.5 meters ±0.1 meter maximum.

Signal Connector:

25 pin, male D connector, J3.


Front panel, 3.5 digit, digital voltage and current meters.

Front Panel Controls:

Voltage and current are continuously adjustable by ten-turn potentiometers with lockable counting dials, ON/OFF circuit breaker/lamp, high voltage ON switch/indicator and high voltage OFF switch/indicator.

Front Panel Status Indicators:

Voltage Control Mode     Overcurrent

Current Control Mode      Overvoltage

Interlock Open                Arc

Interlock Closed              Regulation Error 

High Voltage Inhibit         Overtemperature   

Overpower (optional)

Regulatory Approvals:

RoHS compliant.

Corona Dome Terminations:

The SLS Series of “stack” configured high voltage power supplies come in a various output voltages and different physical configurations. Appropriate corona relief is required for these units to operate at maximum output voltage. Frequently users will provide the corona relief needed so Spellman will provide stack assemblies that by themselves will not be able to operate at maximum output voltage corona free. Please be certain to discuss your requirements with Spellman to be assured you get a stack assembly in the physical configuration you require for your application. The optional K941 Toroid (5˝ x 20˝) should be considered if customer corona relief will not be provided.

360kV Stack Shown with opptional K941 Toroid

Electronic Component (Power Source)

SLS series is intended for installation as a component of a system. It is designed to meet CE standards, with conditions of acceptance often being: customer provided enclosure mounting, EMC filtering, and appropriate protection, and isolation devices. The SLS series is not intended to be operated by end users as a stand-alone device. The SLS series power supply can only be fully assessed when installed within a system, and as a component part within that system.

eSL Option

eSL Option 


The eSL Option provides a vacuum fluorescent front panel display and Ethernet connectivity. Both the 1U (1.75”) and 2U (3.5”) SL product offerings are available with the eSL Option. Using the front panel local controls the main menu has the following features:

Local/Remote Control

Allows operation from either the local front panel or remotely via the Ethernet Category 5 connector.

Features Menu

Allows control over Adjustable Overload Trip and Slow Start features.

Tutorial Menu

Provides information on how to use the local front panel interface.

Diagnostics Menu

Provides information on the revisions of the hardware, firmware and IP address. Additionally the Diagnostics Menu provides information on the status of the internal low voltage housekeeping power supply voltages.

eSL Option power supplies can still be fully controlled via the SL’s comprehensive remote analog interface, so these units are fully backwards compatible with standard SL power supplies.

eSL Typical Front Panel Screen 

SL Digital Interface


Maximum Rating Model Number
kV mA  
160 12.5 SLS160*2000
200 10.0 SLS200*2000
260 7.7 SLS260*2000
300 6.6 SLS300*2000
360 5.5 SLS360*2000

*Specify “P” for positive polarity or “N” for negative polarity Other combinations of voltage and current are available.  


Pin Signal
1 Power Supply Common
2 External Inhibit
3 External Interlock
4 External Interlock Return
5 Current Monitor
6 Voltage Monitor
7 +10V Reference
8 Remote Current Program In
9 Local Current Program Out
10 Remote Voltage Program In
11 Local Voltage Program Out
12 Optional EFR (common)
13 Optional EFR (normally closed)
14 Local HV OFF Out
16 Remote HV ON
17 Remote HV OFF Indicator
18 Remote HV ON Indicator
19 Remote Voltage Mode
20 Remote Current Mode
21 Spare
22 Remote PS Fault
23 +15V Output
24 Power Supply Common
25 Shield Return

Tables & Diagrams