Long-Life DC power supply

The SM800 series consists of power supplies with excellent lifetime and stability. Multiple power supplies can be connected in series, parallel, or both in series and parallel to create numerous output configurations. Optionally, the power sink option can be ordered with this power supply to be able to dissipate up to 140 W. 

In standard, the SM800 can be controlled either via the front or an analog input at the rear of the power supply. Optionally, Ethernet, RS232 or isolated remote programming features can be factory installed. See the options for more information. Furthermore, external interface modules are available to add this functionality to existing units. See the SM800 data sheet for more information.

 

Bench top or rack mounted

This power supply is an excellent choice for laboratory work, R&D, and long-term industrial use. It is reliable, silent, and consistently delivers top performance. The clear display and intuitive knob controls ensure effortless operation. Whether you're optimizing workflows or pushing the boundaries of research, this unit is designed to support you.

It comes standard with feet for bench-top use but can also be mounted in a 19" rack with an optional rack adapter.

 

High isolation voltage

The output terminals of all units, including the low voltage variants, are floating and isolated up to 600 V DC. Combined with the optional 19" mounting, the power supply can be integrated into larger systems easily. In those situations, the interlock connector can be used for system level protection measures.

 

Models

Unit Voltage Current VI-curve
SM7.5-80
0 - 7.5 V
0 - 80 A
VI-Rect
SM18-50
0 - 18 V
0 - 50 A
VI-Rect
SM70-AR-24
0 - 35 V
0 - 70 V
0 - 24 A
0 - 12 A
VI-Autoranging
SM400-AR-4
0 - 200 V
0 - 400 V
0 - 4 A
0 - 2 A
VI-Autoranging

Features

  • Designed for long life at full power
  • Excellent dynamic response to load changes
  • Protected against all overload and short circuit conditions
  • EMC surpasses CE requirements: low emission & high immunity
  • Low audible noise: fan is temperature controlled

Functionalities

  • Master/Slave parallel and series operation with voltage and current sharing
  • Stacking is allowed, space between units is not required
  • Laboratory use (feet included), 19” rack mounting optional
  • Remote sensing
  • Interlock

Specifications

  • Input voltage (single phase): 90-265 VAC (48-62 Hz)
  • Active Power Factor Correction (PFC): 0.99 (at 100% load)
  • Efficiency: up to 89% (at full load)
  • Output ripple and spikes: from 2 mVRMS / 8 mVPP
  • Regulation: from 0.2 mV (0-100% load step)
  • Recovery time: from 100 µs (50-100% load step)
  • Programming speed: from 4 ms (10-90%), optional from 0.2 ms
  • Analog programming accuracy: from 0.2%
  • Output voltage and current stability: 6.10-5 / 9.10-5
  • MTBF: 500 000 hrs
  • Operating ambient temperature: -20 to +50 ºC

Standards

  • Emission: EN 61326-1 (class B equipment, for use in domestic establishment)
  • Immunity: EN 61326-1 (equipment for use in industrial and domestic establishment)
  • Safety: EN 60950-1 / EN 61010-1
  • Insulation input / output: 3750 VRMS (1 min.)
  • Protection class: IP20

Dimensions and weight

  • Width: half 19 inch
  • Height: 2 U
  • Depth: 406 mm
  • Weight: 5.4 kg
DIM330-R
SM70-AR-24-VA
SM70-AR-24-AA

Options

Optional factory-installed features

High Speed Programming

High Speed Programming

Boosts programming speed by 10–20× and lowers output capacitance. Ideal for lasers, fast test systems, or plasma chamber applications requiring low parallel capacitance. See the High Speed Programming data sheet

2-Quadrant Output: Power Sink

2-Quadrant Output: Power Sink

Enables 2-quadrant operation: maintains constant output voltage, whether positive or negative power. Suitable for PWM-controlled DC motors and ATE systems. See the Power sink data sheet.

Digital Encoders

Digital Voltage and Current Setting

Digital encoders enable additional features. This option adds highly accurate digital encoders and automatic coarse or fine pitch adjustment that depend on turning speed. Additionally, this option adds the KEYLOCK function for enhanced operational safety. See the Digital Encoders data sheet.

Secured Voltage and Current Setting

Secured Voltage and Current Setting

CC and CV settings can be screwdriver-adjusted and locked with a protective cap to prevent tampering. The Digital setting option is also able to provide secured settings through software disable.

Increased Output Power

Increased Output Power

Select models support ~10% extra output power (with derating), while maintaining reliability. Either voltage or current range can be increased. Contact us to check availability per model.

Front connection

Front Power Output

This option reroutes the output from the rear to the front panel (not available for SM7.5-80). For more details, see the SM800 series data sheet.

Software Control and Interfaces

Additional programming interfaces

An extra interface can be factory-installed alongside the standard analog:

Interfaces

Add-on interfaces to be added at any time

Order codes

Choose options and extras

 

To order codes

Distribution network

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To distributors

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Downloads

Application notes Type/Format Size
Application note Safe operation pdf 364.71 KB
Application note Battery charging pdf 54.34 KB
Software Type/Format Size
DE Applications bundle description pdf 104.29 KB
DE Applications zip 417.72 MB
Example Code and Software zip 168.81 KB
3D drawings Type/Format Size
3D drawings SM800 series zip 11.19 MB
Compliance Type/Format Size
ROHS pdf 192.81 KB
REACH pdf 195.25 KB