12
ZY120 1-3kVA User Manual EN rev.08.docx
continuously float charge the batteries. The batteries are being charged whenever the UPS is
connected to utility power.
3.5 DC-to-DC Converter
The DC-to-DC converter utilizes energy from the battery system and raises the DC voltage to
the optimum operating voltage for the inverter. The converter includes boost circuit which is
also used as PFC.
3.6 Battery
The standard model include value-regulated, non-spillable, lead acid batteries inside. To
maintain battery design life, operate the UPS in an ambient temperature of 15-25
C.
3.7 Dynamic Bypass
The UPS provides an alternate path for utility power to the connected load in the unlikely event
of a UPS malfunction. Should the UPS have an overload, over temperature or any other failure
condition, the UPS automatically transfers the connected load to bypass. Bypass operation is
indicated by an audible alarm and illuminated amber Bypass LED.
NOTICE
：
The bypass power path does NOT protect the connected equipment from
disturbances in the utility supply.
4. Product Specification and performance
4.1 Model Description
This manual is applicable to the following models:
“KS” Model: Long backup time
4.2 Product Specification and Performance
1. General Specification
Model
KS
Standard
KS
Standard
KS
standard
Power Rating
1KVA/0.9KW
2KVA/1.8KW
3KVA/2.7KW
Frequency (Hz)
50/60
50/60
50/60
Input
Voltage
110Vac~288Vac
Current
5.5A max.
11A max
16A max
Battery
Voltage
36VDC
72VDC
96VDC
Current
35A max
35A max
37A max
Model No.
Type
ZY120-xK
Standard model
ZY120-xK-KS
Long backup model
