ZSAC Electronic AC Loads
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—–—— Description ———— ———– —–—–––– Features –———– With our many years of experience, we have optimized the electronic loads of the ZSAC series for practical use in laboratories, manufacturing and quality control. Power: Voltage: Current: 400W ... 21000W 260V - 440V 3A ... 100A Operating Modes: Current CC Resistance CR Sinewave PhasePhase-gated currents Harmonics Crest factor Arbitrary programmable 40Hz ... 700Hz The ZSAC loads are suitable for use at both AC and DC voltages and are able to work directly at mains voltage. Waveform: The loads are provided in two voltage classes 260V and 440V....

———————–———– ————————– ———————–———–— Features ————————–———— Current Mode Dynamic Load Settings The built-in modulator supports two independently adjustable currents and times of 100µs ... 1s. Resistance Mode Operating Modes The electronic loads of the ZSAC series support the operating modes constant current and resistance. In AC mode the load produces a sinusoidal current with low harmonic distortion. In resistance mode amplitude and waveform follow the input voltage. Dynamic Mode DC Voltage Depending on the type of input voltage the units can be switched from mains line, respectively...

———– ————————–————– ———–—–——————— Features ————————–————– Analog Control In the operating mode constant current the setting value can be preset with 0 ... 3.5V or 0 ... 7V DC. Interfaces (Accessories) The interfaces are plug-ins and can be exchanged or upgraded as required. The following interfaces are available: Analog Monitor Outputs Analog measuring signals from 0 ... 7V are available for voltage, current and power. The signals are isolated from the load input. PlugPlug-In Interface Boards Cooling The devices are air-cooled. To minimize operating noise, control of the fans depends on...

————–———– ——– ––—— ————–———–—––– Data Interfaces ——–—–—–—–—––—— Extended Functionality by Using a Data Interface • SCPI Programming • Setting with 16 Bit Resolution • Data Acquisition of Voltage, • Generation of Superimposed Harmonics • Variable Crest Factor • Current Waveform Arbitrary Programmable • Phase-gated Current Phase- Current and Power • Measuring Data Memory • Dynamic Load Profiles RS232 + USB Interface (Option ZS01) 2) System Interface Fiber Optic (Option ZS05) 1) (ZS05ZS05(ZS05-M for master devices, ZS05-S for slave devices) Option ZS01 extends the device with an RS232...

————————– 3——– ––—— ——– ————————–—––– 3-Phase Systems ——–—–—–—––——– Loading 3-Phase Systems 3Depending on the voltage of the loads they can be connected from phase to phase, phase to neutral or mixed. They can be controlled separately, in MasterSlave mode or by programming. For easy programming it is recommended to connect the slave devices by fiber optic interface to the master device. Then the loads can be programmed separately or all together. Connection Phase-Phase (440V-Version) 3Ordering example for a 3-phase system: Master with RS232 interface, Slaves are connected by fiber optic...

Programming Functions SCPI Programming Language Settings with 16Bit Resolution Measuring Function for Current and Programmable Current Waveforms Dynamic Load Variations with Programmmable Load Profile programmable load profile Programmable Load Profiles in AC and DC Programmable Crest Factor Superimposed Harmonics Phase-Gated Currents Arbitrary Programmable Current Waveform * Phaseshift is not possible in the meaning of apparent power

————– ———–——–————– ————–——————— Software Tools ———–——–————– The following tools and drivers are included in the interface options: Load Control The supplied tool can control single loads as well as multi-channelled load systems. The function range includes the Electronic Load setting by computer as well as data acquisition with graphic display and data storage for spreadsheet programs. Data Acquisition In combination with the Load Control program the measured data for current, voltage and time can be recorded. The following measured values can be selected: Current - Voltage - Time. Waveform...

————–————–——– ————– ————–————–——– Technical Data ————–—————— Accuracy of Setting1) Programming via Data Interface: Accuracy of Manual Setting without Presetting:1) of corresponding range DC, 50Hz ±0.5% ±0.3% 400Hz Current of setting ±1% ±0.6% Frequency of corresponding range DC, 50Hz ±0.5% ±0.3% 400Hz ±1% ±0.6% DC, 50Hz ±1.5% ±0.5% of current range 400Hz Current of setting ±3% ±1% of current range Accuracy of Manual Setting with Presetting:1) Frequency of corresponding range DC, 50Hz ±0.9% ±0.3% 400Hz Current of preset value ±1.4% ±0.6% ±1.9% ±0.5% of current range DC, 50Hz Resistance ±3.4%...