ASR-3000 Series User Manual 
34 
Grounding 
The output terminals of the ASR-3000 series are isolated with 
respect to the protective grounding terminal. The insulation 
capacity of the load, the load cables and other connected devices 
must be taken into consideration when connected to the protective 
ground or when floating.  
 
Basically, grounded return on the neutral output is 
allowed for ASR-3000 series and electric shock may 
occur if not following the grounding procedure 
based on the local electrical safety codes. In some 
cases, 0 V is specifically required between ground 
and neutral, which can substantially moderate 
ground loops, thus keeping sensitive equipment 
from effects of ground loops and reducing ground 
noise. 
Ground & Neutral 
Shortcut 
Illustration 
Owning to the fact that the neutral has been shortcut 
with the ground which is referenced to the chassis 
ground, few electric shocks may still take place from 
time to time, for which we sincerely ask your 
additional attention.