0MNA080A55-GB REV 01 page 13 / 75
3. SENTRY MPS-HP in single configuration
3.1 Set-up of the electrical system
3.1.1 Input
The UPS input must have a max. current protection device for the section of line coming from the distribution panel
as well as for the two inputs into the SENTRY MPS-HP: the rectifier line and the by-pass line.
The protection device should be sized according to the situation, as follows:
a) Single power line
The fuse represented with the letter F alone provides the protection for all three lines mentioned above.
b) main power supply and separate by-pass
When there are two separate power lines, the main power line and the by-pass line, two protection devices must be
provided (indicated with the letters F and G in the drawing b), one for each line.
+/-
SWBY
SWOUT
SWMB
UPS
F
SWIN
SWIN
SWBY
SWOUT
SWMB
UPS
+/-
G
F
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