I. INTRODUCTION /
PENDAHULUAN
1
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 chargered by battery
charger. And when line power fails (off, voltage too low), 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
UPS (Uninterruptible Power Supplies) dapat melindungi
peralatan anda yang rentan terhadap gangguan kelistrikan seperti
computer, instrument terkomputerisasi,
, faksimili, cash
register dan peralatan elektronik lainnya.
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
.
PABX
<
listrik padam
baterai hampir habis
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), inverter seketika bekerja dengan waktu
alih 4ms sehingga pasokan listrik pada beban tidak terganggu /
terputus. Dan bila listrik jala-jala pulih maka otomatis beban
mendapat daya listrik jala-jala kembali.
AC INPUT
TO COMPUTER
UPS OUTPUT
TRANSFER
SWITCH
INVERTER
CHARGER
BATTERY
STABILIZER
&
INDICATOR
CONTROL CIRCUIT