Ac Transfer - Ultimate Power UP1200PCUL User Manual

Charging depleted batteries
The UP Series inverter allows start up and through power with depleted batteries.
For 12VDC model, after the battery voltage goes below 10V, if the switch is still(and always) kept in "ON" position, the
inverter is always connected with battery, and the battery voltage doesn't drop below 2V, the inverter will be able to
charge the battery once qualified AC inputs.
Before the battery voltage going below 9VDC, the charging can activated when the switch is turned to "Off", then to
"ON".
When the voltage goes below 9VDC, and you accidently turn the switch to OFF or disconnect the inverter from battery,
the inverter will not be able to charge the battery once again, because the CPU lose memory during this process.
Start up without battery function can be customized upon request.
Charging Current for each model
The charging capacity will go to peak in around 3 seconds; this may probably cause a generator to drop frequency,
making inverter transfer to battery mode.
It is suggested to gradually put charging load on the generator by switching the charging switch from min to
max, together with the 15s switch delay, our inverter gives the generator enough time to spin up.
Caution:
Please turn the charge current control switch gently to avoid breakage due to over-turning

3.3 AC Transfer

While in the Standby Mode, the AC input is continually monitored. Whenever AC power falls below the VAC Trip voltage
(90 VAC, default setting), the inverter automatically transfers back to the Invert Mode with minimum interruption to your
appliances - as long as the inverter is turned on. The transfer from Standby mode to Inverter mode occurs in
approximately 10 milliseconds. And it is the same time from Inverter mode to Standby mode.
Though it is not designed as a computer UPS system, this transfer time is usually fast enough to hold them up.
There is a 15-second delay from the time the inverter senses that continuously qualified AC is present at the input
terminals to when the transfer is made. This delay is built in to provide time for a generator to spin-up to a stable voltage
and avoid relay chattering. The inverter will not transfer to generator until it has locked onto the generator's output. This
delay is also designed to avoid frequent switch when input utility is unstable
Model
UP12/1000PCUL
UP12/1500PCUL
UP12/2000PCUL
UP12/3000PCUL
- 9 -
Current
30+/-5A
45+/-5A
95+/-5A
125+/-5A
.