Backup
System > |
Portable
Generator with Manual Transfer Switch |
NoOutage.com
House UPS System |
Automatic
Standby Generator & Automatic Transfer Switch |
| Criteria |
| Ease of use for providing
backup power |
DIFFICULT:
Must move generator from storage to outdoors, add fuel & oil, start,
connect cables (sometimes in bad weather and/or at night) |
EASY:
Fully automatic, transfers to battery power |
EASY:
Fully automatic, starts & transfers without user intervention |
| Time delay to provide
backup power |
SLOW:
15-45 minutes |
FAST:
most are less than 6 milliseconds, fast enough for computers and digital
appliances to continue operating, can eliminate need for other UPS
systems for your computers |
MEDIUM:
20-40 seconds |
| Shutdown Ease |
DIFFICULT:
User must disconnect cables, run until carburetor empty, after cool down
return to storage |
EASY:
Fully automatic, transfers back to line power and recharges batteries
without user intervention |
EASY:
Fully automatic, transfers back to line power and shuts down without
user intervention |
| Installation Ease |
MEDIUM:
Install manual transfer switch |
MEDIUM:
Install manual transfer switch, circuit breaker and receptacle |
DIFFICULT:
Apply electrical permit, run fuel & electric lines, pour concrete
pad, wire genset & switch |
| Installation Cost |
LOW:
$1K to $3K |
LOW/MEDIUM:
$2K to $3K |
HIGH:
$5K to $10K or more depending on size |
| Maintenance Required |
HIGH:
Manually exercise for best reliability, oil & filter changes, |
LOW:
Water batteries periodically (not required for gel cells) |
HIGH:
Filter changes, fluid changes, |
| Backup Power Run Time |
MEDIUM:
Refuel after 3-8 hours, frequent oil changes for long power outages |
SHORT/MEDIUM:
Varies depending on size of battery bank and average electrical load,
typically less than 10 hours |
LONG:
Can operate for days or even weeks if fuel |
| Output Power Ratings |
MEDIUM:
Portable generators up to 12kW are common, some larger ratings also
available |
LOW:
Economical ratings up to about 4kW |
HIGH:
Any kW size available |
| Criteria |
Portable
Generator with Manual Transfer Switch |
NoOutage.com
House UPS System |
Automatic
Standby Generator & Automatic Transfer Switch |
Backup
System > |