UPS Backup Power for Surveillance Guide

By Brian Rhodes, Updated Dec 21, 2022, 12:11pm EST (Info+)

Backup power for surveillance systems generally relies on batteries, especially since UPSes for computers are common and easily available.

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However, uncertainty in picking the right backup power supply with the right batteries is a common problem, and the pitfalls of poor selection stretch beyond just having a weak system. In the note, we look at battery backup, the most common method for surveillance power backup.

In this report, IPVM examines:

  • UPSes run time delivered
  • Understanding UPS power units of measure
  • How to calculate surveillance system wattage
  • Using runtime graphs to determine supply duration
  • How much backup runtime is needed
  • Common factors affecting runtime
  • Why consumer UPSes often are too weak
  • Why battery-equipped power supplies may not be enough
  • Why commercial UPSes are often the best choice
  • Using generators for longer runtimes

UPS = ******* **** **** * *****

******* ****** *************** ***** ******** (*****) are ******** ** ****** ************, ***** drops ** *** **** ******, *** to ******* **** *** ****.

******* ******** **** **** * *** hours ** **** ** *******. ** a ******* **** ** *****, ****** you ****** **** ****** ** *********, providing * ******* ** **** *** even * ***** ************ ****** (< 1,000W) ** *** ******** **** *****, which *** ****** ****** ******** ** run *** * *** ***** ** less.

Generators *** ****** ****

*** ****** ***** ******* **** **** three ** **** *****, ********** ****** be ****. *** **** ** **********, see********* ****** ***** *** ************.

Sizing *** *** ***** *******

*** ***** ****** ******* ******** *** power ****** ** *** ****** **********, including *******, ********, *** ********* ** servers. *** *********** ** ***** ******* follows **** *******:

(****** ** ******* * ***** ******** by *** ******) + (***** **** by *********) + (****** *****)

*** *******, * ****** ***** ***** cameras, ** *** *********, *** ** eight-port *** ******:

(* ******* * * *) + (70W ***) + (*.** ******) = ~125 * *****

********** **** ***** ***, ********** ** backup *** ** ***** ** ****** as ******** *** ******* (***) **** cameras *** **** **** *** ***** on *****:

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System ******* ********* *******

******** ****** ** ****** *** ************* sheets ********* ***** * ********** ******* against ******* **** ******** *********. ***** disclaimers ******* **** ********* ***** *****, battery ****, *** *** ************* ********** shorten *****.

********* ***** *****

****** ******* **** ** ************, *** motor ********, *******, ** ******* *** drive ************ ***** **** *** *** typical *** **** *** ********* *** during *********. ***** ***-******* ***** *** reduce ******* ***** *****.

******* ***

**** ****, ***** ******* **** **** its ******* ** ***** *** ********** a ****** *** ** *** ***** of *** ******** ******* *** ******. For * ******* ***-**** *******, *** same ******** ******** **** ******* ********* in * **** **** ********** **** potency **** **** ** *** **** lead ** *** *********** ** *** cell ******. ** **** *****, *** batteries ****** * *** **** **** a ******** ** * - * years ****** ******* ** ** ********. However, ****** ****, * ******* *** become ****** **** **** ** ****** on *** **** ******.

***********

**** ********* *** ****************** **** ********* than **** ****, *** ***** ********* in ****-********* ************ *** ********** ************ problems ** ********* ******. ** ********* are *** **** ** *********, *************** controlled *****, **** *** *********** **** or ******* ***** ***** ********. ** many *****, ******* ***** ******* ******* elements ** **** ** **** **** temperature ***** ******** ** ***** ****** and ******* ***********.

Runtime ************, ******, *** ******

** ********* *** **** **** * UPS *** ****** ****** *****, *** total ****** ***** ****** **** ** calculated *****.

******* ****** (** ******) **** *** much ****** **** * ***** *** will ******* *** * ***** ****.

***** **** ************* ******* **** ******* charts, ** **** *** *** ********* for * *** ****, **** ******* runtime *********** **** *** ************ *** often *********.

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****** *********** *********** *******:

Reading ******* ******

**** ***** *** ******** ** ** more ********* ** ********** *** ********, others *** **** ********* ** ****** values. ***** ***** *** **** ******** to ** ***** ** ********, ** buying ***** ***** ** ******* ** VA ******* ***** ** * *******. The ******* ***** *** ****** ** batteries ****** *** ***** ******* ********* of * ***, ********* ** ***** UPS ***** ***********. *******, *** ******* values **** ******* *********** ** * usable ***.

**** ***** ****** ******* ** *****, a ******* ***** **** **** *** down *** **** ******* ******** ** available *** *** ****. *** ************* typically ******* ***** ******* ** * curve *** ****** **** ****, **** the ******** *****:

******* *:

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******* *:

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***** ****** ******* *** *** **** variation ******* ******* ** ******* *****.

*** *******, *** *** ******* *, a **** ** *** **** **** approximately *** *******, *** * ******* 450W **** **** **** ~* *******.

*** *** ******* *, * *** load **** **** **** *** *******, a **** **** **** **** ~** minutes, *** * ******* **** * load **** **** * *******.

Consumer *** *******

*** **** ****** ******* ****** ** small *******-******** ***** **********, ********* ******** for ******* ****** *** *** ******** into ****** **** *******.

*******, ***** ***** ********* *** *** built **** ****** ******* ***** ** run ******** ******* *** **** **** a *** ******* *** *** *** good ********* *** **** ************ *******.

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**** *********** **** ********-***** ***. *** * ************ ****** ***** 125W, *** ****** ***** ***** **** last ****** ** *******, ***** ***** be *** ***** ** ** ****** depending ** ******* ****** *********. ***** units *** ***** *** ***********, *** routine *********** **** ******* *********** ** not ****** ** ******. **** ******** units *** ******* ******** ** **********.

******** ***** *** ***** *** ********** available ******* $*** - $*** *** most ******* **************, **** *** ******* units ********* ***** *** ***** ** under.

Battery-Backed ***** ********

******* ************ ******-***** ****** ** *********** low-voltage ***** ******** ******** **** ********* in *** *********.

**** ****** ******* ** ****** ** non-PoE ******* ******* **** ***** **** low ******* ********* ******* *** ***** to ****. *******, ***** ***** ******** are ****** **** *** **/** *** camera *****, *** ***** ****** ********** like ******** *** ********* **** ********** backup ***** *******.

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******* ****** ***** ******** *** ********* the **** ****-********* *** ** *** batteries ** ***-*** *******. ***** * typical * - ** ******* ***** supply *** **** $*** - $***, this ** **** ~$** - $** more ********* **** ******* ***-******* ******** equivalent ******.

Commercial *** *******

**** ******** ***** *** *******-******** ***** supplies ***** **********, ******, **** ******* battery ****** ********* *** *********, *** at ****** **** ***** ******* ******** models.

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********** ***** *** ********* ********* ** mini ***** ** ****-******* *****, *** the ********** ****** ********* ******** **** batteries ******** **** ****** ********. ***** units ***** ******* ******* ********** ***** that ****** **** ***** ***** *****, weak *********, *** ******* **** ****** checks. ** *******, ******** ******* ***** can ** ******** ** ******* *** less **** **% ** *** **** of *** **** ******.

********** ***** *** *** *** ****** phase, *** *** '****-**' *****, *** require ******** ***** ** ***/***/****** *****. Unlike ******** ***** **** *** ** dropped ******** **** ***** ** *********, commercial ***** ********* ******* ********* ***** circuits.

***** *****-**** ***** *** ********* *******,****/***, ********.

**** ********** ***** **** ** ***** $500, ******** ********* ** ******* **** extra ******* ***** *** *****. ***** the **** ********* ******, ***** ***** typically ***** *** ******* ********.

Wallmount ***

***** ****** **** ***** *** ********** are *** *********, ******* ****** ** to ***** ******* ****** ***** ** walls:

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*** **** ***** ** **** **** factor ** ******* ** ****-******* ******, starting ** ~$*** *** ******* ** thousands. *******, *** ** *** ***** significant ****** ** ***** *****, ********** supports *** **** ************* *** ** needed, ********** *** ******* ****.

Mini-UPS/ ******* *****

**** ************* **** ******** ****-*****, ***** output *** *** ******* ****** ******* cameras ** ********** *** ******:

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******* ***** ****** ******* $*** ** $135 *** ***** ***** *****. *** more *********** ***** ****** **** ** *** **** **** Energy *********.

Extended ******** **** **** *****

**** ******** ******** (****, *** *****) are ******, *********** ****** ***** ******* like ********** ** ***** ******** ******* arrays *** **** ****-********* **** ****** supply ***** *** ***** *********** *****. See ************ ****** ***** *** **************** *** **** ****** ** ***** options.

System ******* **. *** *******

****** ****** ***** *** ***** *** frequently ********* **** *** **** ****, watts (*.*., ** *** ***** **** 30w ** ** *****, ***., *** a *** ***** ** ***** *** 300 ***** ** *** *****, ***.), these ****** ** ****** *******. *** example, * **-**** *** ********* ** a ***-**** *** **** *** *** anywhere ***** ** ** *****, **** if *** (*******) ******* *** ******* can ** ******* ** ****** *******.

** ********, *******/****** **** ** ********* quite *****. *** *******,**** **** ******* **** *** * **** **** for~* ********** * **** **** ***~** *******.

*** **** ***** *** *** ******* graph/chart ** ********* *** **** ** backup *** *** **** *******.

UPS ***** ***** ** *******

*********** ***** *** ** ********* ****** basic ***** *** *******. *** *****, three ***** ***** *** **** ** establish *** ******** **** *** ******* of * ***.

*****:

*** * ******* **** ** *** much ***** * ****** *****, ***** are ****. **** ***** **** ********** voltage **** *** ******, ** ********* devices **** *** ** ** *** or *** *** *** ** **** without **********. ***** **** *** ***** an **** ** ****** **** **** but ****** ** * ******. ******* being *** ** *** **** ****** ratings *** ********* ********, *** ******* rating ** *** ***** *** ******* power ***** ** ******* ************ *** may ** ****** ** *** **** specs.

****/**** (**):

**** ***** ******* ***** ******** **** Volt ****, ** *********** ***** ****. However, *** **** ** ********* ******* to ********** ** ******* **** (** does *** ***** ********** ** ** reactive *****). ** *** **** ****, most ***-******* ******* **** *******, ********, or **** *** **. ***** *** this **** ***** ** ******** *** capacity ****** ** ***** ******** *********, which *** **.

*******, *** **** ****** ** ***** they ***** ** ********* *********** *** to ******. *** ****** ******* ********* for ****** ***** *** **** ** less **** *** *********** ** ****** of *** ****. **** ***** *** VA ** *** ******* ******** *********, like ******* *** ****** **** ******** *** *, *********-**** **** ****** **** ******** *** *, *** this********** **** ** ******** ******** *** *.

****/***** (**):

*** * ******* ** ***** **** time, ***** ***** **** ****/***** *** needed. ****** *******, * **** **** supplies * **** **** ** *******. UPSes ** *** ******* **** ***** as * **** ***** ****** ******* their ********** *** ****** ****** **** than ** ****, *** ******* *** often *******. *******, **** ************** ****** ** ********** **** ********* *** **** * given ****** ******** ***** ** * given **** ****.

[**** ****** *** ********* ********* ** 2016 *** ************* ******** *** ******* in ****.]

Comments (4)

***** ******* ** *** ** **** for ***'*. *** ***** * *** was *** ********* *** *** ********** Software *** *** *** *** ******** managing ***** *** **** *********** ***** shutdowns ** *******/*******.

**** *** ********* ********, *** **** power ********** ** *** *** *** tell *** ****** ** ****** ** a ***** ************ **** ***** ** UPS ***** *** *** *** ********* want ** *** *** ** ******** shut **** *** ******/******* ****** *** UPS ***** **** ***. *** *** also *** ****** ** ******* **********, system ******, ******* ******** ***.

**** ** * ****** *******, **** reputable *** ************ **** *** ********** Software **** *** ***** ***** *** most ******** *********/************ ******* *** ***********.**** ** ********** *** ********** ********? - *** ***

Agree: 1
Disagree
Informative
Unhelpful
Funny

***** ***** *** *** ******* *** commercial **** *******. **** ***** ******* temporary ***** ** ******* * ****** from ******* *** *** ******* ** reboot ** * ***** "*******" ** short-term ******.

********** **** ********* **** * *****-**-****** short ******* ** * ************ *******, the ********** **** ******* ** **-***** the ******* ***** * *** ******* to *** ** ** *** * transient ** ********* **** ******. ** the ******, *** ***** **** **** off *** ********* ** *** ***** from * **** ********** ****** **** help ***** *** ***** ******* ******* the *****.

******* ******* **** **** *** ********* rare *** ** ** ********** ***** power ****** **** **** **** * few ******* *** *** **** ** be ******** *** **** ******. **** is ***** **** * ***** *** would ** ******* ** ******** *** NVR *** ******* ** **** ******* on ****** **** ** *********** ***** ***** ******* *******. ****** this **** *** ***** ** **, but **** ***** *** ******* *** now ****** *** ** **** * few ******* ** *******.

Agree: 2
Disagree
Informative
Unhelpful
Funny

**** *** ****** **** ** ******** with *** *********** ** ****. * UPS ** ****** ******** ** ****** the *** ******* ***** **** *** generator ***** **, ** ***** **** and ****-***** ** *** ******* *******.

** **** ***** ***** ** ***** to ** *** *** **** **** 10 *******, ** **** **** ** hour. ***** ** ********* *** ***** and *** * **** ****** ******** in ***** ** ****, ** **** cases *** ******* ******* ** *** reliable ****** ** ****** *** **** expectation.

Agree: 1
Disagree
Informative
Unhelpful
Funny

**** *******/************ *** * *** ** the **** *******.

*** ***** *** ** ******* ****:********* *** ****** *****

* **** **** **** *** *****.

Agree
Disagree
Informative
Unhelpful
Funny
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