Salicru BM-R Serie Manual De Usuario página 24

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.
AC input mains to
manual bypass
To
equipment
Equipment IEC
input power supply
connector
Fig. 3. Wiring between the UPS and the 3 kVA bypass.
AC input power
supply
To
equipment
input
Equipment input
terminals
Fig. 4. Wiring between UPS and 6 and 10 kVA bypass.
24
RACK MANUAL BYPASS 16 A
From equipment output
UPS / STABILIZER
RACK MANUAL BYPASS
40 / 63 A
terminals to
From equipment output
EMBS connector
UPS / STABILIZER
Output to
loads
3 IEC
1 IEC
3 IEC
Equipment
IEC output
Output
loads
Output
terminals
to loads
SALICRU SALICRU