The ACL series of electronic loads from H&H are suitable for both DC and AC voltages up to a frequency of 1,000Hz. 1-phase and 3-phase models are available. Multiple 1-phase units can be configured into a 3-phase in a parallel, star or delta configuration. There are also 3-phase versions in one housing.
The clear 4.3″ touchscreen makes operation clear and simple. Various waveforms are defined directly through the user interface, from phase angle and crest factor to harmonics and arbitrary current waveforms. Phase shift between load current and voltage is possible in combination with crest factor or phase angle control.
The measured values are displayed numerically for all channels/phases or displayed in an oscilloscope-like manner versus time in a graph. The automatic amplitude correction keeps the RMS value of the current constant, even with a variable crest factor.
These ACL series electronic AC loads are suitable for a voltage up to 280Vrms or 500Vrms and can be used in CC, CR, CP and CV mode. With alternating current, the set waveform is applied to the charging current, regardless of the input voltage. In resistance mode, the current level and waveform depend on the input voltage level and waveform. In energy and voltage mode it becomes
power or voltage controlled by software by adjusting the input current. Single phase units are available with a capacity of 500W to 21kW. The 3-phase models are suitable for a power of 3 x 1,400W to 3 x 8,400W.
In all operating modes, the ACL load can emulate load profiles using the LIST function. Up to 300 setpoints of variable duration with associated rise and fall times are possible. Sampling times can be defined separately for each profile. Voltage and current are measured synchronously and stored with a time stamp. Various dynamic load profiles can be programmed and the waveform itself can also be varied. There is an arbitrary function for the realization of, for example, harmonic distortion, phase control currents and Crest factor.
All control functions of the ACL series electronic loads are also adjustable or controllable via the optional, galvanically isolated I/O port. The ACL series is equipped with RS-232, USB, LAN, GPIB and the CAN System bus for Master-Slave use as standard.
Models
| Single phase 280V | Single phase 500V | |
| ACLS528 | ACLS550 | |
| ACLS1028 | ACLS1050 | |
| ACLS1428 | ACLS1450 | |
| ACLS2828 | ACLS2850 | |
| ACLS4228 | ACLS4250 | |
| ACLS5628 | ACLS5650 | |
| ACLS7028 | ACLS7050 | |
| ACLS8428 | ACLS8450 | |
| ACLS9828 | ACLS9850 | |
| ACLS11228 | ACLS11250 | |
| ACLS12628 | ACLS12650 | |
| ACLS14028 | ACLS14050 | |
| ACLS15428RV | ACLS15450 | |
| ACLS16828RV | ACLS16850 | |
| ACLS18228RV | ACLS18250 | |
| ACLS19628RV | ACLS19650 | |
| ACLS21028RV | ACLS21050 |
| Three phase 280V | Three phase 500V | |
| ACLT4228 | ACLT4250 | |
| ACLT8428 | ACLT8450 | |
| ACLT12628 | ACLT12650 | |
| ACLT16828 | ACLT16850 | |
| ACLT21028 | ACLT21050 | |
| ACLT25228 | ACLT25250 |
For more information, we would like to refer you to data sheet.