Riello UPS MASTER HE - System Personalizations and Settings; Load Transfer to Maintenance Bypass

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3.6 Personalizations
Using the CONTROLS PANEL (from the basic menu press keys 3 and 5 and the access code 436215), the following
factory-set electrical parameters can be modified within a certain field:
Personalisations
default value
adjustment value
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Battery test
every 24 hours from system
start-up
disable
Rated output voltage
400 V
380V-415V
Battery type
1
0,1,2,3
Battery capacity
equal to the INVERTER
power. e.g. at 100kVA the
value set by default is
100Ah.
0 ÷ 9998 Ah
End battery discharge
prealarm
5 minutes
1÷254 minutes
Cyclical charge
ON
OFF
Auto off
Load <0%
Load 0÷100%
Auto off timer
Toff = 0:0’ – Ton = 0:0’
Toff 0:0’÷24:0’
Ton 0:0’÷24:0’
Bypass voltage field
± 20%
± 5% ÷ ± 25%
Bypass frequency field
± 2%
± 1% ÷ 6%
STANDBY-ON
OFF
ON
SMART ACTIVE
OFF
ON
RS232
Baud rate 9600
1200,2400,4800,9600
RS232 identification
Basic number 0
0 to 31
3.7 Procedure to transfer the load from UPS onto maintenance bypass.
Maintenance bypass mode
During maintenance bypass mode the load is supplied directly from the bypass line and therefore battery
backup from the UPS is not available. This mode of operation is provided for maintenance or service
operations only and therefore must only be used by trained and authorised service personnel.
Procedure not applicable in the frequency converter
With several MASTER HE s connected in parallel, follow the procedure described in the section on “bypass
for maintenance” of chapter “Parallel version”.
The sequences of operations to be carried out to place the UPS in maintenance bypass are shown below. The
procedure varies depending on the initial state of the UPS.
- MASTER HE in NORMAL OPERATION
procedure a) the power supply to the load is not interrupted in any way;
- MASTER HE with output not synchronized with the bypass line
procedure b) the power supply to the load is interrupted
(therefore this operation should be effected only if absolutely necessary).