Riello UPS Master HE 100 kVA, Технические характеристики, Страница: 11 / 34

MASTER HE
SPTMHEE3T16FREN 10
6. UPS DESCRIPTION
The uninterruptible power supply can be set to operate in four operating modes: ON-LINE, STAND-BY ON, SMART
ACTIVE and STAND-BY OFF.
Mode: ON-LINE
•
Normal Operation : The rectifier draws energy from the mains to power the inverter and keep the batteries
charged; the inverter powers the load with voltage and frequency stabilised and in sync with the by-pass mains,
if appropriate.
•
Emergency operation: when the mains power supply goes out of the pre-set limits, the rectifier switches off and
the inverter is powered from the battery for the envisaged back-up time without any disturbance to the load. When
the mains power supply is restored, the Rectifier starts to operate gradually (power walk in), powering the batteries
again and charging the inverter
•
By-pass operation : in the event of an inverter overload beyond the envisaged limits, or a manual shutdown, the
load is automatically transferred onto the by-pass mains by means of the Static switch without any disturbance to
the load.
Mode: STAND-BY ON
The load is normally powered from the by-pass mains, the rectifier keeps the batteries charged. When the mains goes
outside the preset range, the load is transferred automatically onto the inverter (within three milliseconds) until the mains
returns to a suitable level.
This mode is suitable for powering loads that are not sensitive to mains interference, thus allowing increased system
efficiency of up to 98%.
Mode: SMART ACTIVE
When the Master HE is configured in SMART ACTIVE mode, it automatically defines whether to operate in ON-LINE or
STAND-BY OFF mode.
This is done by monitoring the by-pass mains: if this remains suitable for a defined period, the system sets itself to STAND-
BY ON mode; otherwise it remains in ON-LINE mode.
Mode : STAND-BY OFF
When the mains power supply is present, the rectifier keeps the batteries charged and the inverter is switched off. When
the mains fails, the rectifier switches off and the inverter is activated in approx. 200 ms, using the battery energy.
This application is suitable for the power supply of emergency lighting, as defined by standard EN 50171.
The block diagram of the
Master HE system is shown below:
SWBY
SWIN
SWMB
SWOUT
Inverter
Static Switch
Control logic circuit
with microprocessor
PFC
Converter
Mains
Bypass
Mains
Battery
Out
Signaling and Control
panel
Backfeed
Protection
Alarms Card
Comunication Card
SNMP, MODBUS;
JBUS etc.
Step-UP/Step-Down
Converter
TL