Up to 100 LAB-AUTO systems can be arranged in parallel to 1.8MW. Each PSU is able to operate independently, so that systems can be reconfigured, expanded or broken up as needs dictate.

The modular approach is useful for test houses and research labs who regularly test different sized power devices. Individual units can be used for the day to day testing of multiple small devices, then grouped together for larger projects.

Up to 8000 sets of programmed memories for V, A, W and time values can be stored within the units internal memory. This allows common test routines to be executed at the touch of a button.

Transient responses are <1.5ms for 10-90% load steps, ideal for powering high speed drives.

Every LAB-AUTO features an autoranging output. This allows many more voltage/current combinations at nominal power than a traditional DC source. An example of the difference is shown below using a LAB-AUTO 80-540.

Using one autoranging PSU instead of several traditional DC sources saves both cost and bench space. Despite the units offering such a large output range, they are still incredibly power dense. 18kW of output power is provided from 3U of rackmounting height.

Each LAB-AUTO includes constant voltage, current and power modes. Adjustable internal resistance is also provided, useful for emulating the output of energy storage devices such as battery packs and capacitors.

Users can nominate an operating mode to take priority over others when testing specific types of load. For example, using the Constant Current priority output mode eliminates overshooting when testing a capacitive load or diode.

All LAB-AUTOs operate from a wide 180-460Vac input. There's no derating of the output at low input voltages, making units suitable for installations worldwide. An active Power Factor Correction (PFC) circuit is integrated into the input stage as standard. This enhances the overall efficiency of the modules across the output power range when compared to a unit that does not have PFC. In practice, this means a significant lower peak current value, a decrease of RMS value of the phase current and less perturbations of other equipment running on the same grid.

The inbuilt active PFC is also ideal for operating the power supply from a generator. Generators tend to be sensitive against high current peaks, and their voltage controllers may have some stability problems with non-sinusoidal load currents. The PFC feature forms a lowpass filter and therefore, both the repetitive current peaks and also the harmonic content is enhanced. This will help the generator system maintain a stable and reliable output voltage during load step changes.

Where users only have access to a DC link, systems can be built with a 400-600Vdc input. Full functionality of the power supply is still provided when operating from a DC input.

Control of the system is provided via a large touch screen with 5 digit V, I and W display, as well as by analogue knobs. The standard LAN interface allows for remote control.

An isolated analogue interface is optional, as are a selection of other computer interfaces.

Operating software is provided to set and monitor live values. A sequencing function is provided so that the LAB-AUTO can follow pre-determined voltage and current curves. Data can be recorded and recalled via a USB stick. 

A specialised PV simulation software package is provided when option /PV is selected. This allows the power system to simulate a generator's MPP tracking in constant current, voltage and power modes. Up to 8192 data points can be set so that a smooth and realistic waveform is generated.

An integrated interlock circuit is provided to connect the unit to an external safety device. Over-voltage and over-current protection limits can be adjusted to help safeguard sensitive loads. Ramp profiles and slew rate are also programmable.

Each LAB-AUTO comes in a 19" rackmounting case. Units can be treated to a laboratory rack or flight case integration. Having a programmable power system mounted into a flight case on castors is often advantageous, especially when several departments or test cells share the same equipment. 

Multiple power systems can be fitted into the same flight case. Door hangers are fitted for convenience. Existing ETPS systems can also be retrospectively integrated into new flight cases where requested.

If your test requirement is short term, we have multiple LAB-AUTO units in our rental DC source range.