Our rental system can be combined in parallel with any ELPA-SINE 3750 units you have previously purchased, providing they have the same nominal outputs. This allows any short term requirements outside of usual operating ranges to be met. Up to 8 ELPA-SINE systems can be arranged in single phase parallel connection.

The current is actively shared between each load. The ammeter of the master unit shows the total current that is the sum of all ammeters, The voltmeters of the slaves will show SL1 and SL2.

The ELPA-SINE is able to operate at maximum current across most of its voltage range. This allows one system to test many different types of DC and AC devices. When operating below 50V, the maximum amount of current that the load can sink decreases. Example values for this derating at low voltages are provided below.

When in constant current operation the user can select between sine, square and DC waveforms. An adjustable frequency up to 440Hz is provided. Peak currents can be simulated with the crest factor mode. A leading or lagging power factor can be set with adjustments from unity to 0 lagging or leading. The desired wave can be recalled from the front panel or selected via an optional computer interface. The load can also be operated in constant power, voltage, resistance or linear CC modes.

Multiple inbuilt tests include UPS efficiency, PV inverter efficiency, UPS back-up time, battery discharge time, UPS transfer time, short circuit and fuse/breaker trip testing. Other interesting features of the ELPA-SINE include a turbo mode which can test currents up to double the maximum current of the unit up to 1 second, ideal for inrush current testing.

Battery Discharge Function

Three inbuilt battery discharge tests are provided. The battery tests allow the user to set a voltage threshold to stop the discharge, avoiding accidental damage to the battery. Capacity in Ah, discharge time and voltage can all be read from the display.

Rectifier Load Simulation

The electronic load features a rectifier load mode. This allows users to test IEC test specification requirements for the UPS, IEC 62040-3 UPS Efficiency Measurement Non-Linear and IEC 61683.

Front panel control is provided as standard, as well as an anologue and LAN remote control interface.

A host of protection features guard the unit against over power, voltage, current and temperature.

The electronic load is delivered mounted in a flight case with locking castors. Door hangers are also fitted for convenience.

If you are looking to purchase a system, new ELPA-SINE units can be found in our AC electronic load range. We also provide a dedicated range of new DC electronic loads.