|
Features |
Benefits |
|
1.
|
Extremely
high power efficiency, Typically above 97%. |
Lowest
operating cost in terms of electric use – only 1/10 of
double-conversion on-line UPS. |
|
2.
|
Air
exhaust fan is normally off since very little heat is
generated. |
Quiet
operation. Does not add to air conditioning loads. |
|
3.
|
The
inverter circuit is normally off. |
Very
quiet operation and the highest MTBF (mean-time-between
failure) due to the lowest voltage, current and temperature of
its internal parts. |
|
4.
|
Cooler
internal operating temperature. |
Battery
lifetime is approximately twice that of an on-line type UPS. |
|
5.
|
Output
waveform is normally a sinewave. The inverter waveform is a
modified square-wave, generated only during power outages. |
The
pulse-width-modified and optimized peak-voltage modified
square waveform is actually more beneficial for switchmode
power supplies. |
|
6.
|
Simplest
and most economical UPS design. |
Simple
design with the lowest parts count. Means lowest purchase
price and maintenance costs. Repair procedures are quick and
easy. |
|
7.
|
The
switchover time of some high-quality Standby UPS is less than
1ms. |
The
ride-through of typical switchmode power supplies is 10 to 20
ms. A fast 1ms switchover time guarantees glitch-free transfers. |
