15
7.3 Transfer Point Test
* Using a variac, set the output for the rated UPS's voltage.
* Slowly reduce the variac output while monitoring the UPS's input voltage. The UPS should
transfer to Boost when the voltage drops to the level given in the following Transfer Point Chart.
Repeat this procedure to ensure accurate results.
* While the UPS is in Boost mode. continue to slowly reduce the variac output until the UPS
transfers to battery mode. The UPS should transfer to battery when the voltage drops lo the
level given in the following Transfer Point Chart.
* Slowly increase the variac output until the UPS goes back to on-line operation.
* Continue to increase the variac output until the UPS transfers to Buck when the voltage
increases to the level shown in the Transfer Point Chart. Repeat this procedure to ensure
accurate results.
* While the UPS is in Buck mode, continue to slowly increase the variac output until the UPS
transfers to battery mode.
* Check the output voltage for each step according to the Transfer Point Chart. Load
100V
110V
115V
120V
220V
240V
240V
Hi
to
INV
122–128 134–141 140–147 146–154 268–282 281–294 293–307
INV
Hi
recover 118–124 130–136 135–143 142–149 260–273 271–285 283–298
Buck
106–112 117–123 122–129 127–134 233–246 244–258 254–269
Buck
Recover 103–109 113–120 118–125 124–131 227–240 237–251 247–262
Boost
Recover 91–97 100–107 104–112 109–116 200–213 209–223 218–233
Boost
88–94
97–103 101–108 106–113 194–207 202–216 211–226
INV Low recover
76–82
84–90
87–94
91–98
167–180
175–189
182–197
Low to INV
72–78
79–86
83–90
86–94
158–172
166-179
173–187
7.4 Startup On Battery
Unplug the UPS from the variac, and press the front panel On/Off button for three seconds, and
the UPS should turn on
7.5 Communications Port Test
* Plug the UPS into the variac and turn on the UPS.
* Connect the USB or 9 pin communication cable (721-9266-dd8) between the computer com port
and UPS com port.
* Start the UPSMON Monitor & Manager programs and verify the information is displayed
correctly (Model, Voltage/Frequency Configuration, Input/Output etc...).
* UPSMON will also initiate automatic graceful shutdowns during extended power failures.
* If UPSMON and a communication cable are not included in your UPS package, you can
purchase it from your local dealer.