Powerware Uninterruptible Power Supply SOLA 4000 - Manual (Page 6)

SOLA 4000 - General System Description
JUE 401264 6
1 UPS ASSEMBLY
1.1 Features
CE This equipment complies to the essential requirements of Euro-
pean Directives 89/336/EEC and 73/23/EEC, and complies to
EN50091-2 (1995) and EN50091-1 (1991) standards.
UPS Function The uninterruptible power supply (UPS) is connected between the
consumer's critical equipment (the load) and supply mains. Its
function is to guarantee a continuous and conditioned power supply
to the load. Even in the case of a total blackout it will supply the
load for a predetermined time (autonomy time). In addition, the
UPS provides the following advantages in comparison with conven-
tional supply systems (mains, motor generator sets, etc.):
Better Output Power Characteristics The UPS output voltage control of frequency and amplitude guar-
antees consistent and stabilised output power. Mains voltage
fluctuations and frequency changes that are usually present in
electricity supply systems do not affect the UPS output voltage.
Uncoupling from Mains Distortion By using double energy conversion from ac to dc and back to ac
and using an isolation transformer in the inverter output, all mains
distortions are filtered out. Therefore, all loads connected to the
UPS system are protected against mains disturbances that can be
present in industrial electricity supply systems. This is especially
important for sensitive electronic devices, e.g. computer systems,
control systems, medical equipment.
Complete Protection against
Mains Failures
During long term or short term ac mains supply interruption, the
UPS system guarantees continuous supply to the connected loads
by means of a battery. The battery is connected to the rectifier
output and the inverter input of the UPS system. In normal opera-
tion the inverter (which feeds the load) is fed by the rectifier. In
case of a mains failure, the connected battery automatically feeds
the inverter. Thus the load is supplied without interruption. How-
ever, the load can only be supplied by the battery for a certain time
(autonomy time, see chapter 1.4 "Battery"). If longer autonomy
times are required, we recommend the use of a Diesel Generator
Set. In this case the battery autonomy time only has to be sufficient
for the time span between mains failure and full operating capacity
of the Diesel-Generator-Set.
This is a class A product.
In a domestic environment, this product may cause radio
interference, in which case, the user may be required to take
additional measures.
1 UPS Assembly