2.1.17. Dual input System Block
a.
UPS Utility Input: to provide the AC source to the UPS rectifier circuit and charger.
b.
UPS Bypass Input: to provide the AC source to the UPS Bypass Input and
Maintenance Bypass loop.
c.
UPS Utility Input Breaker: to protect the UPS Rectifier circuit from over-current.
d.
UPS Bypass Input Breaker: to protect the UPS Bypass circuit from over-current.
e.
EMI Filter on UPS Utility Input: to eliminate the magnetic interference from AC Source
or UPS Utility Input.
f.
EMI Filter on UPS Bypass Input: to eliminate the magnetic interference from AC
Source or UPS Bypass Input.
g. Fuse for UPS Utility Input: to provide over-current protection for UPS Rectifier Circuit.
h. Rectifier and Booster: When Utility is normal, they will converts the AC to DC and
correct input power factor. When Utility is abnormal, the batteries will be boosted to
provide the DC voltage to the Inverter.
i.
Input fuse for Battery: to protect batteries when DC-Booster is out of order.
j.
Charger: the battery charging device.
k. Internal Battery: When AC abnormal, it provide the backup power from the batteries.
l.
External Battery Bank: To provide longer backup time by adding additional Battery
bank.
m. Inverter Generator: To convert the DC voltage to AC voltage
n. UPS Inverter Output Fuse: When the UPS is overloaded, the fuse will be opened.
o. Inverter Output Switch: When the UPS is overloaded or abnormal, or the UPS is
working on ECO mode or if EPO (Emergency Power Off) is activated, the Switch will
be opened.
p. Auto Bypass Loop: When the UPS is overloaded or abnormal, the UPS will switch the
UPS to bypass output automatically from inverter output.
q. UPS Output EMI Filter: To eliminate the magnetic interference from the UPS Output
and avoid the interference caused by the output load and the UPS.
2.2. Symbols on the LCD Display Panel
Page
9
to
4
5
Page
8
to
4
5
Item
Symbol
Description
1
Utility or Bypass Source
2
Battery Low
3
Battery Abnormal
4
UPS Overloading
5
UPS Working in specified mode*
6
Bypass Input Abnormal, UPS fails to transfer
to bypass, Bypass Abnormal at ECO mode
7
Utility Input Abnormal
8
OFF
UPS Shutoff
9
INPUT
OFF
UPS Abnormal Lock
10
UPS Flow Chart
11
3-Digit Measurement Display
