Up to eight units from the ELP-34305 series can be arranged in parallel configurations. It is possible to connect 5kW to 40kW models with different nominal values, up to a maximum of 320kW. For example, a 5kW system and a 40kW system can be operated together. When operating in master/slave operation, a number of test modes are not available. Please see the datasheet for more information.

The diagram shows eight different models from the ELP-34305 family operating in parallel together. 50kW and 60kW models can be operated in parallel connection up to 480kW, but only with models of the exact same specifications. 

Each unit is able to operate independently, so that systems can be expanded or broken up as needs dictate. This approach is useful for test houses and research labs who regularly test different sized power devices. 

150-state memory is provided as standard, which allows quick initialisation and limit-setting of the unit. This makes the ELP-34305 both dependable, and mobile as an on-site load tester.

A sequencing function means that stored settings can be implemented against time, enabling the unit to carry out state-dependant and complex test routines without the need for a computer interface. 

The ELP-34305 series is able to operate at maximum current across most of its voltage range. This allows one system to test many different types of devices. When operating below 30V, the maximum amount of current that the load can sink decreases.

Standard Modes

Each unit is provided with constant voltage, current, power and resistance modes. In dynamic mode, adjustable rise, fall and plateau times allow testing of high voltage DC energy, from photovoltaic cells or high voltage batteries. Dedicated short circuit, OCP and OPP tests allow power supply behaviour and protection mechanisms to be characterised.

The ELP-34305 series has a total of 5 battery discharge modes. These simplify test set up for users, whilst avoiding conditions which could result in permanent battery damage due to over or under voltage. 

Front panel control is provided as standard. Optional LAN, USB, RS-232 or GPIB interface cards can also be easily retro-fitted or even swapped in the field by the user.

The /802 option provides a separate analogue interface which allows an input from an external source, such as an external waveform generator. The ELP-34305 will track the signal in CC, CV or CP modes, varying its load current proportionally according to the 0-10VDC signal. You can also monitor the sink voltage and current.

If your test requirement is short term, we have a wide range of DC electronic loads in our rental range.

An ELP-34305 system was used by Brunel University London to perform discharge tests on a custom battery pack design they had created. The versatility of the load means that it is used on a variety of projects by multiple departments, from PV array testing to loading fuel cells.