Pw1000 1-3Kva Model Range; Ups Operating Principles; Basic Block Diagram - Kohler PW1000 2 kVA User Manual

2: General Description
2.1.2

PW1000 1-3kVA Model range

The PW1000 1-3kVA UPS range comprises 1 kVA, 2 kVA and 3 kVA models, each of which is designed as a self-
contained UPS comprising a rectifier, battery charger, inverter, static switch and battery pack. All the models in this range
are easy to install, and supplied with suitably terminated power cables.
The PW1000 1-3kVA operates as a stand-alone UPS module and can be mechanically configured as a floor-standing
tower unit or installed in a standard 19 inch rack. An accessory pack which contains all the parts necessary to configure
the unit for either type of installation is supplied with the UPS.
Optional external battery cabinets are available to increase the UPS autonomy time. The battery cabinet design
compliments the UPS cabinet and the two cabinets can be mechanically connected together to form a single unit when
installed as a tower system – see chapter 3 (Installation) for mechanical configuration details.
Maximum output power (0.9 pf)
Dimensions (WxHxD)
Weight (with internal batteries)
Sound level
2.2

UPS Operating principles

2.2.1

Basic block diagram

AC
EMI
Input
FILTER
EMI Filters
The UPS has an input and output EMI filter to reduce the effects of electromagnetic noise generated by the UPS on other
adjacent equipment – e.g. reduces external radio interference.
Battery charger
A regulated battery charger, power from the AC Input supply, charges the battery whenever the input supply is available.
DC/DC Boost converter
In times of AC Input supply failure, the DC/DC Boost Converter turns on and boosts the battery voltage to a level suitable
for use by the inverter. It provides a regulated DC output for the inverter while the battery voltage decays during discharge
and includes voltage and current monitoring and overload protection.
4
1 kVA
kVA (kW) 1.0 (0.9)
mm 440 x 88 x 400
kg 12
dBA <50
Bypass Line
AC/DC (PFC)
CONVERTER
Safety Input
Relay CB
BATTERY DC/DC BOOST
CHARGER CONVERTER
BATTERY
Figure 2.1 UPS Functional block diagram
2 kVA
2.0 (1.68)
440 x 88 x 600
22
<50
DC/AC
INVERTER
EMI
FILTER
STATIC
SWITCH
TS_600_00 PW1000 1-3kVA User Manual 6/4/17
3 kVA
3.0 (2.7)
440 x 88 x 600
26.5
<50
AC
Output