socomec Masterys BC, Installation And Operating Manual, Page: 25 / 52

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MASTERYS BC
100-120 kVA - Ref.: IOMMASBCXX07-EN 05
ENGLISH
3.4-1
3-phase input/3-phase output for UPS 3/3
3.3. OPERATION IN CONVERTER MODE
In converter mode the UPS can supply a fully stabilised sinusoidal output voltage with a diff erent frequency from the input power
line (50Hz or 60Hz is available as output frequency value).
IMPORTANT!
Only set this mode on UPS units with the auxiliary mains (AUX MAINS) disconnected!
Do not set this mode on UPS units with common mains lines as it could damage the load!
3.4. OPERATION WITH EXTERNAL MANUAL BYPASS (optional)
The external maintenance bypass may be placed on the general distribution panel when the UPS is installed, or by installing the
bypass panel that is supplied on request.
The Q1 switch must be connected to the auxiliary mains input and the mains input must be isolated on the panel.
If the manual bypass is activated (with the appropriate procedure), the load is powered directly from the auxiliary mains, while the
UPS is in fact excluded from the power supply and can be switched off .
This operating mode is useful when maintenance needs to be carried out on the UPS since service personnel can work on the
installation without having to cut off the power supply to the load.
3. MODES OF OPERATION
Key
Q1 Mains power switch (MAINS)
Q3 Ouput switch
Q5 Bypass switch
Bypass panel connection diagram
Mains
L3
L2
L1
L3
L2
L1
L1
N
N
Load
IN
UPS
N
L1
L2 L2
L3 L3
N
OUT
Q5
Q1
Q3
3.5. OPERATION WITH INTERNAL MAINTENANCE BYPASS
If the internal maintenance bypass is activated using the appropriate procedure the load is powered directly from the maintenance
bypass, while the UPS is separate from the power supply and can be switched off .
This operating mode can be selected for maintenance to be carried out on the system, so that the necessary actions can be
performed by service personnel without having to disconnect the power supply to the load.
3.6. OPERATION WITH MOTOR GENERATOR (GENSET)
MASTERYS BC can be operated in conjunction with a generator (GENSET) over the ADC interface (see chapter 8.1).
With a generator, the frequency and voltage ranges of the auxiliary mains can be increased to accept the instability of the GE and
to also avoid operation from the battery or risks of out-of-synchronisation switching on to the bypass.