How to Choose an XGY DC Power Test Platform

DC power test benches often need more than a single source. A battery or inverter setup may require a bidirectional supply, an electronic load, a low-noise bench supply, and automation interfaces. This guide compares the current XGY DC power families by source/sink behavior, power range, voltage range, and test role.

Quick Recommendation

Need	Best fit	Why it fits
Compact regenerative source/load testing	N351 Bidirectional Programmable DC Power Supply	2.5 kW, 5 kW, and 7.5 kW classes in a 1U platform with source and load operation.
High-voltage or high-power regenerative testing	N355 High Power Bidirectional Programmable DC Power Supply	Up to 2250 V model families and up to 42 kW in 3U for larger battery and traction benches.
Wide-range programmable DC source only	N362 Wide Range Programmable DC Power Supply	20 V to 1500 V families and 500 W to 10 kW by model for source-mode validation.
Multi-rail R&D or production bench source	YDC100 Series DC Power Supply	Dual-channel and triple-channel programmable output for powering multiple DUT rails.
Low-noise linear bench supply	XDC100SA or XDC203SP	Linear output for sensitive analog, audio, calibration, and low-ripple lab work.
Sink-only load simulation	N621 or N692	Programmable electronic loads for DUT loading, discharge, and production verification.

Source, Sink, or Both

Family	Primary behavior	Typical range	Use when
N351	Bidirectional source/load	40 V / 80 V, +/-55 A to +/-300 A by model	You need compact regenerative cycling or battery simulation around lower voltage rails.
N355	High-power bidirectional source/load	0 to 2250 V by model, up to 42 kW in 3U	You need high-voltage battery, inverter, traction, or energy-storage testing.
N362	Wide-range programmable DC source	20 V, 40 V, 80 V, 360 V, 750 V, and 1500 V families	You need a flexible source across many voltage/current combinations without sink operation.
YDC100	Multi-channel programmable DC source	Up to 150 V and 10 A per channel by model	You need repeatable multi-rail DUT power for R&D, validation, or production fixtures.
N621 / N692	Programmable DC electronic load	N621 compact bench loads; N692 high-power loads up to 2400 V class by model	You need sink-only load profiles, discharge tests, or load banks for source validation.

How to Decide

Start with energy flow

If the DUT can return energy to the test system, start with N351 or N355. Bidirectional operation reduces the need for separate source and load hardware and can return absorbed energy to the grid. If the DUT only needs supplied power, N362, YDC100, XDC100SA, or XDC203SP may be the better fit.

Use N362 for wide-range source coverage

N362 is a programmable source rather than a bidirectional supply. It is useful when one platform must cover several voltage families and when automation, CC/CV priority, and compact rackmount density matter more than regenerative sink capability.

Pair sources and loads for complete benches

Many validation benches combine a programmable source with an N621 or N692 electronic load. This is common for supply characterization, converter testing, discharge profiles, and production checks where the load profile needs to be repeatable under software control.