PAS-F regenerative AC source and grid simulator
The variable AC test supply G99 Annex A.7.1.2.2 describes, with the absorbed power returned to the grid rather than dissipated.
Answers directly to
What it is for here
G99 type verification asks you to step voltage in increments of 0.5% or less, hold past the trip delay, then jump in one step and measure trip time — and to do it repeatedly, across settings, with the module running. That is a duty cycle, not a demonstration. Regeneration is what makes it affordable to run all day: the energy the module pushes back goes to the grid instead of into a load bank and a room full of heat.
Why it is on the UK site
The single most direct answer on this site to a British standard's own words.
Specifications
Published figures for this line are held on the manufacturer’s current datasheet, and they change. Rather than reprint a table that goes stale, send the requirement — the standard, the device under test, the power envelope and the cadence — and an engineer will come back against the current document.
Other systems
- AMF 400 Hz aircraft AC source400 Hz ground power for airborne equipment test.
- AFV and AFV+ programmable AC sourceGeneral-purpose programmable AC where the requirement is a clean, controllable supply rather than grid emulation.
- Programmable DC with arbitrary transient sequencingThe DC side of military land-platform testing — wide input, and transients you cannot produce with a bench supply.
- Procyon PTS 2100 power supply test systemA turnkey system for testing power supplies and converters at production cadence.