I. INTRODUCTION /
PENDAHULUAN
UPS (Uninterruptible Power Supplies)
dapat melindungi peralatan anda yang rentan
terhadap gangguan kelistrikan seperti: komputer,
instrument terkomputerisasi, PABX, faksimili,
cash register dan peralatan elektronik lainnya.
UPS ini terdiri atas inverter, baterai,
pengisi baterai, rangkaian pengendali,
stabilisator, saklar-pengalih dan indikator. Saat
listrik jala-jala normal, UPS menyaring listrik
masukan dan menyalurkannya pada keluaran
UPS, pada saat yang sama baterai diisi oleh
pengisi baterai. Manakala terjadi gangguan
listrik (padam, tegangan terlalu rendah/tinggi),
inverter seketika bekerja dengan waktu alih 4
ms sehingga pasokan listrik pada beban tidak
terganggu/terputus. Dan bila listrik jala-jala pulih
maka otomatis beban mendapat daya listrik jala-
jala kembali.
UPS ini dilengkapi interface untuk
berkomunikasi dengan komputer, dengan sistem
operasi Windows 95, 98, ME, Unix/Linux
maupun Windows NT4/2000. Informasi yang
diberikan kepada komputer adalah
dan
.
<
listrik
padam
baterai hampir habis
UPS (Uninterruptible Power Supplies) can
provide full protection against all of power
problem for your sensitive equipment ranging
from computer, computerized instrument, PABX,
facsimile, cash register to all electronic
equipment.
This UPS consists of inverter, batteries,
battery charger, control circuit, stabilizer,
transfer switch and indicator. When line power is
normal, the UPS filters line power input and by
pass to output UPS and at the same time the
batteries is being charged by battery charger.
And when line power fails (off, voltage too
low/high), inverter will supply regulated AC
power to the load within 4 ms transfer time so
that the power supplied to the load is
uninterrupted. And when line power is normal
automatically load gets from line power again.
This UPS is also completed by interface for
communication with computer, with operating
system Windows 95, 98, ME, Unix / Linux and
Windows NT4/2000. Information from UPS to
Computer is
and
.
<
power fail
battery low
AC INPUT
TO COMPUTER
UPS OUTPUT
TRANSFER
SWITCH
INVERTER
CHARGER
BATTERY
STABILIZER
&
INDICATOR
CONTROL CIRCUIT