TOE 8872 High-performance power supplies

High performance and easy-to-use
An output power up to 1500 W is provided by the power supplies belonging to the TOE 8871 and TOE 8872 series; at the same time, output voltages can be generated up to 400 V and output currents up to 100 A depending on the model.
As a result of state-of-the-art switching controller technology and proven microprocessor control, these devices are suitable for completely universal application.
Together with a high effi-ciency, the power supplies are characterized by permanent load resistance, autoranging and a low weight.

A highly effective power factor corrector (PFC) ensures that the TOE 8871 and TOE 8872 power supplies react with respect to the mains source like a resistance without any capacitive, inductive or non-linear components whatsoever. The mains current input is therefore sinusoidal, in-phase with the line voltage, and thus free of reactive current components.

The devices are extremely easy-to-use, and the specifications are exceptional. Superb processing quality together with a large number of special functions mean that the power supplies of the TOE 8871 and TOE 8872 series can be counted among the very best currently available.

Integrated measurement
A further significant characteristic is the high-resolution measurement of the voltage, current and power values; these are output on 4-digit LED displays and can be read at a high rate in bus mode. This means that additional measuring instruments are usually superfluous.

Adjustment using incremental spinwheel
The output values are set using a wear-free incremental spinwheel with selectable sensitivity, thus guaranteeing reliable, exact setting of the output voltage, current and power even after many years of use.

Remote control: GPIB, RS 232 and analog
All devices can be remote-controlled as standard in analog mode, and optionally via GPIB and RS 232 interfaces with the standardized SCPI command set (SCPI: Standard Commands for Programmable Instruments). The system interfaces are characterized by a high setting rate and a high measuring rate. In addition to this, device driver software under “LabView“ is also available. Furthermore, all devices can be controlled at high precision via an electrically isolated analog controller (option).

Ethernet/LAN interface
For the TOE 8871 and TOE 8872 series power supplies a RS 232 Ethernet-Adapter is available to control the power supply remotely over LAN. The Ethernet-Adapter provides a TCP / UDP port to transmit SCPI commands to the power supply. An integrated web server allows easy access to the device to check the connection or to reconfigure the adapter. The ethernet adapter is preconfigured for the instrument and can be used in most networks without additional configuration.

Automatic calibration
Fast and convenient calibration of all output parameters is possible externally within a few minutes without having to adjust any trimmers or make any interventions in the device. This “Autocalibration“ can be carried out simply using the control elements or with computer support within a test system. An autocalibration function provides significant advantages, particularly when considering the increasing importance of regular calibration intervals as a result of quality assurance systems.

Voltage source, current source and automatic power contro
Depending on the set values for voltage, current and power, each power supply can be operated, depending on the load conditions, as a constant voltage source, constant current source, or as a source with a constant output power.

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      • Features

        • Autorangin
        • Active PFC
        • High rise and fall rates
        • High endurance, even under extreme load conditions
        • Best EMC characteristics; residual ripple 5 mVrms up to 10 MHz, optional 1 mVrms
        • Low interference voltage, approx. 1 mVeff (optional)
        • GPIB-, RS 232 interface (optional)
        • Analog interface as standard
        • Floating analog interface with monitor outputs for voltage and current (optional)
        • Arbitrary function (option)
        • Brief load current 1.5 x Irated for approx. 20 ms (optional)
        • Sensing
        • Can be used as constant voltage, constant current and constant power source (CV/CC/CP)
        • Extremely quiet thanks to excellent thermostatically controlled fan technology
        • Master/slave operation
        • Free LabViewTM-driver
      • Product data

        Model TOE8871 e TOE8872 (linear)
      • Data Sheet & Downloads

        Data sheet



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