Salicru BM-R, User Manual, Page: 24 / 80

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SALICRU SALICRU
5. DESCRIPTION.
•
The manual bypass is an option which allows feeding the load
or loads either from an equipment - UPS or stabilizer-, or from
commercial mains directly without breaking the power supply
during its switching manoeuvring, because it is make before
break type, unless it is used in a wrong way without respecting
the stated procedure in section 7.
•
In correlation with Fig. 1 and 2, Fig 3 and 4 illustrations show
the single line diagrams of both structures.
The structure is identical in both figures, although there are
some differences between models. The most important one
is the auxiliary contact from the manual bypass switch, which
comes from a microswitch located in the back side of the pro-
tection cover and connected to a signal connector internally.
By means of the electrical connection with the supplied cable
between this connector and the one available in several equip-
ments like the UPS from TWIN PRO2 and/or RT2 series, when
the protecting cover from manual bypass is removed, the UPS
shifts from «Inverter output mode» to «Static bypass mode»,
considering that the system was on normal mode operating
previously. Therefore, it makes easier the operating and avoids
possible wrong manoeuvring that it could cause serious dam-
ages to the installation set, loads included.
UPS / STABILIZER
RACK MANUAL BYPASS 16 A
3 IEC
AC input mains to
manual bypass
3 IEC
1 IEC
Equipment IEC
input power supply
connector
Equipment
IEC output
Output to
loads
To
equipment
From equipment output
Fig. 3. Wiring between the UPS and the 3 kVA bypass.
UPS / STABILIZER
RACK MANUAL BYPASS
40 / 63 A
Output
terminals to
loads
AC input power
supply
EMBS connector
To
equipment
input
From equipment output
Equipment input
terminals
Output
terminals
to loads
Fig. 4. Wiring between UPS and 6 and 10 kVA bypass.