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Hoecherl & hackl

ZSAC Series

The electronic loads of the ZSAC series are optimized for the practical use in laboratories, manufacturing and quality control.

The ZSAC loads are suitable for use at both AC and DC voltages. The loads are provided in two voltage classes 260V and 440V. The power spectrum contains models from 400W up to 12600W and currents up to 50A.

In AC mode the units can be used for 50Hz or 60Hz mains voltage as well as for other frequencies up to 700Hz including 400Hz for aircraft applications. When working at mains voltages even heavily distorted input voltages can be loaded. In current mode there can be stored up to six current waveforms.

The ZSAC loads provide special functions to generate phase-gated currents, load currents with superimposed harmonics and with programmable crest factor. Extensive equipment options support an optimal adaptation to test projects. For example, different interfaces can be used as plug-ins to replace or upgrade the existing interface. Multi-channel systems are easy to build up. A galvanically isolated Analog I/O interface is standard. The ZSAC loads have excellent dynamic characteristics, and are ideal for pulsed loading applications. The robust mechanical housing is intended for either 19" rack mount or benchtop use. The larger, higher power devices can be supplied directly mounted on castors. 


Key Features:

  • Voltage up to 440 VZSAC Serie
  • Current up to 100 A
  • Power 400 W ... 21 kW
  • Frequency range up to 700 Hz
  • For single-phase and three-phase applications
  • Star and delta connection possible
  • Current and resistance mode
  • Dynamic loads
  • Programmable waveform
  • Phase shift combined with crest factor
  • Harmonics, phase control
  • SCPI programming with measurement function
  • Full electronic protection
  • Isolated analog measurement outputs for voltage, current and power
  • Isolated analog control input


Operating Modes

The AC current loads of the ZSAC series feature constant current and resistance operating modes. In AC mode the current is sinusoidal. In resistance mode the height and waveform of the current depends on the input voltage.

Voltage Types

Depending on the type of voltage the devices can be switched between mains voltage and/or mains-synchronous voltage, AC voltage with variable frequency and DC voltage.

Interfaces (Accessories)

The interface cards are removable and can be exchanged or expanded as required. The devices can be fitted with the following interfaces:

  • RS-232 + USB
  • GPIB + RS-232 + USB
  • System interface fiber optic
  • Ethernet-RS-232 converter



    260V 440V
    400W 6A
    ZSAC426
    3A
    ZSAC444
    1400W 10A
    ZSAC1426
    5A
    ZSAC1444
    2800W 20A
    ZSAC2826
    10A
    ZSAC2844
    4200W 30A
    ZSAC4226
    15A
    ZSAC4244
    5600W 40A
    ZSAC5626
    20A
    ZSAC5644
    7000W 50A
    ZSAC7026
    25A
    ZSAC7044
    8400W 60A
    ZSACRV8426
    30A
    ZSAC8444
    9800W 70A
    ZSACRV9826
    35A
    ZSAC9844
    11200W 80A
    ZSACRV11226
    40A
    ZSAC11244
    12600W 90A
    ZSACRV12626
    45A
    ZSAC12644
    14000W 100A
    ZSACRV14026
    50A
    ZSAC14044
    15400W   55A
     ZSACRV15444
    16800W   60A
    ZSACRV16844
    18200W   65A
    ZSACRV18244
    19600W   70A
    ZSACRV19644
    21000W   75A
    ZSACRV21044

    Contact:

    Caltest Instruments Ltd

    4 Riverside Business Centre

    Walnut Tree Close

    Guildford

    Surrey GU1 4UG

    United Kingdom

    Tel: +44 (0) 1483 302 700

    Fax: +44 (0) 1483 300 562

    Email: sales@caltest.co.uk

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