Delta Elektronika has introduced its first 15kW standard power supply offering a bi-directional output and advanced new features at the price of a standard version. Operation is as easy as ever with no need to study bulky manuals. The SM500-CP-90 features a flexible constant power output characteristic: the lower the voltage, the higher the current: 500V, -30 to +30A, 250V, -60 to +60A and 166V, -90 to +90A. Voltage, positive current and negative current can all be adjusted from zero to maximum.
In sink mode Delta’s Power Regeneration Technology returns energy back to the grid with an efficiency of 95%. Because of this high efficiency, cabinet height is restricted to just 3U without any compromise on product lifespan.
Dynamic response to load changes is excellent allowing very fast load variations between -90 and +90A while all-digital control makes it possible to adapt regulation to match load type. The input range of a standard unit encompasses 380 up to 480V AC rated voltages, covering 86% of the world’s electricity grids.
The new SM500-CP-90 is protected against all overload conditions while temperature controlled fans guarantee silent operation. EMC conducted and radiated emissions are according to EN55022 Class B. With the new SM500-CP-90 Delta Elektronika has extended its offering to a higher power level: from 6kW maximum per supply to 15kW. In master/slave configuration, power levels of 30kW and more are possible while maintaining very competitive prices.
Increased power without compromising either specifications or lifespan is what the SM500-CP-90 offers. A breakthrough in power electronics technology has enabled Delta to engineer features that customers demanded but were previously impossible.
The constant output power covers the output range of five separate power supplies with a traditional rectangular VI-curve. Choosing the best output range is much easier now and offers users far better value for money.
Bi-directional power means the same constant power characteristic in the second quadrant for the full 15kW. It operates like an electronic load too: previously Delta’s power supplies would be equipped with an optional power sink capable of absorbing up to 10% of the total energy which was dissipated via internal heat sinks. Now, the power sink is standard and can sink up to 100% of the power without the need for dissipating lots of energy.
With new Power Regeneration Technology Delta returns full power back into the grid and the efficiency of 95% avoids the need for expensive water cooling. Compared to traditional electronic loads – where dissipation is 100% – there is a power loss of just 5%. Rooms will be cooler, costs for air conditioning systems will drop significantly and, overall, the SM500-CP-90 contributes to a smaller carbon footprint.
Fast response to load changes has been a challenge for a long time, especially when it comes to changing from positive to negative current and vice versa. Previously, for applications requiring source and sink devices several solutions were offered, such as pre-loads. The full integration of source and sink in one device is a neater and more efficient solution. Output voltage of the SM500-CP-90 recovers in 200µs after a load change from +90 to -90A and -90 to +90A.
The Ethernet interface, built-in sequencer, PC control software, fine tune setting, sink mode etc. are all included in the standard version of the power supply so there are no additional charges for these features. For master/slave operation, digital I/O, RS422/485 interfaces or analogue programming, optional plug and play interfaces are available.
