CyberPower ST425 User Manual

INSTALLING YOUR UPS SYSTEM
UNPACKING
Inspect the UPS upon receipt.
The box should contain the following:
(a) UPS unit
(b) User’s manual
(c) USB device cable (except for ST425)
DETERMINE THE POWER
REQUIREMENTS OF YOUR EQUIPMENT
1. Ensure that the equipment plugged
into the outlet does not exceed the UPS
unit’s rated capacity (425VA/260W for
ST425, 625VA/360W for ST625U, and
900VA/500W ST900U). If the rated
capacities of the unit are exceeded, an
overload condition may occur and cause
the UPS unit to shut down or the circuit
breaker to trip.
2. There are many factors that can aect
the amount of power that your electronic
equipment will require. For optimal system
performance keep the load below 80% of
the unit’s rated capacity.
HARDWARE INSTALLATION GUIDE
1. Your new UPS may be used immediately
upon receipt. However, after receiving a
new UPS, to ensure the battery’s maximum
charge capacity, it is recommended that
you charge the battery for at least 8 hours.
Your UPS is equipped with an auto-charge
feature. When the UPS is plugged into an
AC outlet, the battery will automatically
charge whether the UPS is turned on or
turned o.
2. With the UPS unit turned o and unplugged,
connect your equipment requiring battery
backup into the battery power supplied
outlets. Plug the other peripheral equip-
ment (printer, scanner, speakers) into the
full-time surge protection outlets.
DO NOT plug a laser printer, paper
shredder, copier, space heater, vacuum,
sump pump or other large electrical
device into the “Battery and Surge
Protected Outlets”. The power demands
of these devices will overload and possi-
bly damage the unit.
3. Plug the UPS into a 2-pole, 3-wire ground-
ed receptacle (wall outlet). Make sure the
wall branch outlet is protected by a fuse or
circuit breaker and does not service equip-
ment with large electrical demands (e.g.
air conditioner, refrigerator, copier, etc…).
The warranty prohibits the use of extension
cords, outlet strips, and surge strips.
4. Press the power switch to turn the unit on.
The Power On indicator light will illuminate
green and the unit will “beep” twice.
5. If an overload is detected, an audible alarm
will sound and the unit will emit one long
beep. To correct this, turn the UPS o and
unplug at least one piece of equipment
from the battery power supplied outlets.
Make sure the circuit breaker is depressed
and then turn the UPS on.
6. To maintain optimal battery charge, leave the
UPS plugged into an AC outlet at all times.
7. To store the UPS for an extended period
of time, cover it and store with the battery
fully charged. While in storage, recharge
the battery every three months to ensure
optimal battery life.
8. Ensure the wall outlet and UPS are located
near the equipment being attached for
proper accessibility.
9. Lay the UPS horizontally or use the key-
hole mounting slots to ax the UPS to
the wall in the proper orientation. DO NOT
stand the UPS up vertically.

CyberPower ST425 Specifications

General

Waveform	Pseudo sine
Output power	260 W
UPS topology	Standby (Offline)
Input frequency	47/63 Hz
Output frequency	50/60 Hz
Audible alarm modes	Alarm when on battery, Fault, Low battery alarm, Overload alarm
Surge energy rating	890 J
Output power capacity	0.425 kVA
Socket circuit breaker	Yes
Power protection features	Overload
Input operation voltage (max)	140 V
Input operation voltage (min)	96 V
Output operation voltage (max)	120 V
Transfer time (Line Mode to Battery Mode)	8 ms
Power plug	NEMA 5-15P
AC outlet types	NEMA 5-15R
AC outlets quantity	8 AC outlet(s)
Safety	UL1778, cUL, FCC DOC B, CEC
Form factor	Compact
Cable length	1.5 m
Product color	Black
LED indicators	Power
Battery voltage	12 V
Battery capacity	2.9 Ah
Battery technology	Sealed Lead Acid (VRLA)
Battery recharge time	8 h
Number of batteries supported	1
Typical backup time at full load	1.5 min
Typical backup time at half load	6 min
Operating altitude	0 - 3000 m
Non-operating altitude	0 - 15000 m
Storage temperature (T-T)	-15 - 45 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	0 - 95 %
Sustainability certificates	RoHS, ENERGY STAR

Weight and Dimensions

Depth	81 mm
Width	210 mm
Height	114 mm
Weight	1723 g