Characteristics of UPS Device
Characteristics of UPS:
Information displays: All UPS devices will issue a warning before their battery is completely discharged, but the better devices have information displays to provide information on the charge level of the battery, the amount of power being demanded by the PC, and other information you need to decide how
much time you have before the battery is dead.
Monitoring systems: Many UPS devices include a serial cable that is attached to a serial (COM) port on the PC, which is used by software running on the PC to monitor the “heartbeat” of the UPS. The UPS sends a signal at regular intervals over the serial cable. These signals are monitored by a software
program running in the background on the PC. If the UPS fails to send too many signals, the software assumes that the UPS is gone and begins to shut down the PC. The software program that monitors the UPS is usually supplied by the manufacturer of the UPS. There are advanced monitoring systems that
can display console messages, send e-mails, or dial a pager to notify the system administrator.
Line Conditioners: A-line conditioner, also commonly called a power conditioner, eliminates line noise from the incoming power and keeps voltage within normal levels. Line conditioners don’t protect against blackouts, but they do smooth out any low or high-voltage conditions on the incoming power line.
Alarm systems: Most UPS and line conditioning devices sound an alarm when the input power source drops below a certain level or if the power becomes unreliable.
Watts: The real power used by an electrical device. It is the power taken from the AC input source.
Volt-amps (VA): The VA rating of a device is computed as the volts it uses times the amount of current in amps it draws from the circuit. The volt-amps rating is used for determining the size of wiring, circuit breakers, and UPS devices.