PE · Protective earth
The earthing conductor carried separately from neutral to every load, giving fault current a defined low-impedance return so protective devices clear and enclosures stay safe to touch.
Current numbers
800 VDC two-wire PSU option (isolated from PE)Mt. Diablo 1.0.0: only the two-wire PSU option is isolated from PE; the ±400 V output is midpoint-bonded (Ch 4.7)