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UPS
Selection Guide
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UPS Power Problem Comparison Chart |
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Off-line |
Line-interactive |
True On-line |
Provides battery backup with no output interruption? |
no |
no |
☑ |
Can the UPS be started on battery without being plugged into a utility source? (portable applications) |
✓ most will not |
✓ some will |
✓ |
Does the UPS continue to operate when the batteries completely fail? |
Most do not |
Some do not |
✓ Most will |
Provides output AC voltage regulation while on utility & battery? |
none |
✓ +12% typ. |
✓ +2% typ. |
Provides output frequency regulation while on utility and battery? |
On battery only |
On battery only |
✓ |
Can the UPS be operated from a 120Vac, 400Hz source? |
no |
no |
✓ A few can |
Does the UPS provide input power factor correction? |
no |
no |
✓ Many models available |
Does the UPS provide input to output isolation? |
no |
no |
✓ Some models |
Supports the addition of a Simple Network Management Protocol, SNMP/HTTP interface board? |
✓ no |
✓ most |
✓ most |
Can the UPS be operated below 32ºF and above 90ºF ? |
no |
no |
✓ Some models available |
Does the UPS protect equipment against a direct lightning strike?
|
no |
no |
No |
Should the UPS be used with other microprocessor or microcontroller based applications? |
✓ usage should be reviewed closely |
✓ |
✓ |
Should the UPS be used with large motor loads? |
no |
✓ Sinewave output models only if sized properly |
✓ If sized properly |
Should the UPS be used with laser printers?
|
no |
✓ If sized properly |
✓ If sized properly |
Can the UPS be used as a international frequency converter? |
no |
no |
✓ |
Should the UPS be used with generator sources? |
no |
no |
✓ |
Should the UPS be used to power equipment that is sensitive to input voltage changes? |
no |
no |
✓ |
Should the UPS be used to power HID lighting systems? |
no |
no |
✓ If sized properly |
Should the UPS be used on security or telephone systems requiring backup time of greater than an hour? |
no |
no |
✓ |
Should the UPS be used to power emergency lighting ? |
no |
no |
✓ |
Should the UPS be used to power radio frequency based communications equipment? |
no |
no |
✓ |
Can the UPS be used for portable emergency backup power where utility in not present? |
no |
✓ Must have sinewave output and DC start capability |
✓ Must have DC start capability |
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