Title :
UPS response to power disturbances-a proposed method for determination of UPS response to power disturbances
Author :
Dorr, Douglas S. ; Folts, D.C.
Author_Institution :
Nat. Power Lab., Necedah, WI, USA
Abstract :
The time it takes for a backup power system (BPS) to transfer to battery power (i.e. “transfer time”) is difficult to measure. No industry standard exists describing a reasonable test for this measurement. A technique for inducing power interruptions and then measuring BPS output voltage response is described. Power interruptions at reduced voltage are recommended because data analysis from a North American Power Quality Study by National Power Laboratory show that 81 percent of all interruptions occur during a low voltage condition. Examples of the proposed measurement technique are shown for a variety of BPS topologies. Experimental results illustrate the difference between uninterruptible and standby power systems
Keywords :
electrical faults; power supply quality; power system measurement; secondary cells; uninterruptible power supplies; voltage measurement; UPS response; backup power system; low voltage condition; output voltage response measurement; power disturbances; power interruptions; transfer time; undervoltage; Battery charge measurement; Data analysis; Measurement standards; Power measurement; Power system analysis computing; Power system measurements; Testing; Time measurement; Uninterruptible power systems; Voltage measurement;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-1456-5
DOI :
10.1109/APEC.1994.316333
