Niveo Professional NUPS20-3 - Manual (Page 4)

SPECIFICATIONS
Capacity VA 1000VA 1200VA 1500VA 2000VA 3000VA
Input
Voltage
100VAC, 110VAC, 120VAC, 220VAC, 230VAC or 240VAC ±25%
Frequency 50Hz or 60Hz ±5%
Output
Voltage (Batt.
Mode)
100VAC, 110VAC, 120VAC, 220VAC, 230VAC or 240VAC ±10%
Frequency 50Hz or 60Hz ±1Hz
Waveform Modified sine wave
Transfer Time Less than 6ms (typical)
Battery
Battery Type 12V/7AH*2Pcs 12V/7AH*4Pcs 12V/9AH*4Pcs
Recharge Time 5 hours to 90% of full capacity
Indicator LCD
LCD indicator for line-on, battery back-up, AVR protection,
load and battery level, overload and UPS cut-off
Alarm
Battery Back-up Sounding every 3 seconds
Battery Low Sounding every 1 second
Overload Continue beeping sound
Protection
Overload Fuse & current limited
Short Circuit Fuse & current limited & cut-off
Batt. Low Cut-off No battery drain after cut-off
Physical
Dimension,
D*W*H
390*182*285
Environment
Operating
Temperature
32℉-104℉ at full load, 0~90% relative humidity (non-condensing)
Noise Level Less than 40db (at 1 meter)
Interface
USB&RS-232 Communication port
Software imate
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SYSTEM CONCEPT
The purpose to present this chapter is to give you more precise conception
about how UPS works..
1. Block Diagram
AVR.
INV.
CHA.
N.F. N.F.
INPUT OUTPUT
Fig. 1 shows how UPS works.
2. Normal Operation
There are two main loops when AC Utility normal the AC output loop and the
battery charging loop. The AC output gets power from AC utility input and
pass through AVR to support power to load. In the same time, the AC utility
input is converted by AC/DC CHA and support charging power to charge
batteries.
AVR.
INV.
CHA.
N.F. N.F.
INPUT OUTPUT
Fig. 2 shows how the UPS works when AC Utility normal.
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