NOVA Inverter 750VA
Inverter
(48Vdc + 230Vac) /
230Vac
Features and Benefits

Dual input sources (AC & DC)

Compact and lightweight solution
DC Power for
Business-Critical Continuity ™
Description
Inverter systems are normally used for AC backup requirements in a telecom /
datacom site or anywhere a highly reliable AC power back up source is needed.
NOVA is a compact and scalable inverter providing a pure sine wave AC supply.
In conjunction with a DC Power system, it provides an excellent AC backup
solution. The TSI (Twin Sine Inverter) uses the latest inverter technology,
providing superior energy efficiency in a compact size.

High efficiency

Full scalability and expandability

Hot swappable

Pure sine wave on AC output

Transfer time reduced to naught

No single point of failure

Total modularity as no external
static-switch required
The inverter is designed to work from 230Vac and 48Vdc sources through
AC/AC and DC/AC conversions. Unlike traditional inverters, the TSI features
an AC to AC conversion that assures double filtering function. This results in
an efficiency of 94% without any compromise in quality and stability of the
output wave form! This off line operation mode is called “Enhanced Power
Conversion” (EPC).
The EPC mode, which is the filtering of current and voltage, is similar to a
rectifier combined with an inverter (online mode) but gives a significantly
better efficiency. Compared to a UPS operating in offline mode (no current
conversions) the efficiency is the same, but the rejection of grid disturbances
is much higher.
The online mode is usually only used during a mains outage when inverters are
fed by batteries. Therefore, the TSI inverters will almost constantly provide an
efficiency of 94%. It will always be the most reliable AC backup solution!
The TSI inverters also have an in-built static switch function. Because no external
static switch is needed, the inverter system becomes smaller, more reliable and
easily expandable. As many as 32 inverter modules can be used in parallel.
NOVA Inverter 750VA
Inverter Power Flow Diagram
Standard Feature – Offline Mode
AC in
➡
Backup Feature – Online Mode
➡
AC
AC in
AC out
AC
DC in
➡
AC
AC out
DC in
DC
➡
Output power comes from AC in
Inverter is fed from AC commercial grid
AC
DC
➡
➡
Output power comes from DC in
Inverter is fed from the DC Power system
Technical Specifications, TSI NOVA
General
EMC (immunity)
EMC (emission)
Safety
Cooling
Isolation
MTBF
Efficiency (Typical)
EN 61000-4
EN 55022 (Class B)
IEC 60950
Forced
Doubled
240,000 hrs
Enhanced power conversion 94%
On line 89%
DC/AC 4300Vdc
Compliant
3 disconnection levels on AC out and DC in power ports
4 disconnection levels on AC in port
Dielectric Strength
True Redundant Systems
RoHS
Connection
Compliant
I/O terminal block protected against inversion
of polarity
Self adaptive to wide operating conditions and
comprehensive table of troubleshooting codes
Trouble-Free Operation
Nominal Output Power
Output Power (resistive load)
Short Time Overload Capacity
Permanent Overload Capacity
Admissible Load Power Factor
Internal Temperature Mgmt.
750 VA
525 W
135% 15 second
110%
Full (power rating from 0 inductive to 0 capacitive)
Switch off
DC Input Specifications
48 V
40 - 60 V
14A (56A per shelf)
21A (84A per shelf for 5 seconds)
63A circuit breaker per shelf
2mV
User selectable
Short Circuit Clear Up Capacity**
9 x In for 20msec
* Operation within lower voltage networks leads to derating of power.
** Available while Mains is available at AC input port,
with magnitude control and management.
230 V
185 - 265 V
12A per shelf
Adjustable
>99%
50 - 60 Hz
47 - 53 Hz, 57 - 63 Hz
Emerson Network Power.
The global leader in enabling
Business-Critical Continuity™.
www.emersonnetworkpower.com
www.emersonnetworkpower.com/energysystems
www.DCpowerefficiency.com
Maximum Voltage Interruption
Total Transient Voltage Duration (max)
0s
0s
Environment
Altitude Above Sea
Ambient Temperature
Storage Temperature
Relative Humidity
<1500m
750VA -20° to 40°C, 675VA -40° to 50°C,
derating up to 65°C
-40° to 70°C
95% , non-condensing
Signaling & Supervision
Display
Alarms Output
Supervision
Synoptic LED
Dry contacts on shelf
Use optional devices
Weight & Dimensions
Width x Depth x 1U
Weight
Material (casing)
AC Input Specifications
Nominal Voltage (AC)
Voltage Range (AC)
Current (at 185Vac)
Conformity Range
Power Factor
Frequency Range (selectable)
Synchronization Range
230 V
200 - 240 V
2%
50 - 60 Hz
0.03 %
<1.5 %
0.4 ms
20 s
3.25A (protected against reverse current)
3.5
Transfer Performance
AC Output Power
Nominal Voltage (DC)
Voltage Range (DC)
Current (at 40Vdc)
Maximum Input Current
Recommended Protection
Voltage Ripple
Input Voltage Boundaries
AC Output Specifications
Nominal Voltage (AC)*
Voltage Range (AC) (adjustable)
Voltage Accuracy
Frequency
Frequency Accuracy
Total Harmonic Distortion (resistive load)
Load Impact Recovery Time
Turn On Delay
Nominal Current
Crest Factor at Nominal Power
(with short circuit mgmt. and protection)
106 x 325 mm x 1U
2.1 Kg
Coated steel
• AC Power
• Connectivity
• Infrastructure Management & Monitoring
Embedded Power
• Precision Cooling
• Racks & Integrated Cabinets
• DC Power
• Outside Plant
• Services
• Embedded Computing
• Power Switching & Controls
• Surge Protection
Business-Critical Continuity, Emerson Network Power
and the Emerson Network Power logo are trademarks
and service marks of Emerson Electric Co.
©2010 Emerson Electric Co.
Emerson Network Power reserves the right to alter without notice the specification, design or conditions of supply of any product or service.
EN/LZT 145 300 RA