CyberPower ST425 User Manual

YOUR ULTIMATE ALLY IN POWER
Cyber Power Systems (USA), Inc.
4241 12th Avenue East, Suite 400 | Shakopee, MN 55379 | CyberPowerSystems.com
STANDBY UPS SERIES
ST425 / ST625U / ST900U
USER MANUAL
FEATURES
1. Power On Switch
2. Power On Indicator (green)
3. Battery and Surge Protected Outlets
4. Full-Time Surge Protection Outlets
5. Circuit Breaker
6. USB Port to PC (except for ST425)
7. USB Charging ports (except for ST425)
8. Widely-Spaced Outlets
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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

Summary

Important Safety Warnings

Installing Your UPS System

Unpacking

Check the contents of the UPS package upon receipt.

Determine Power Requirements

Ensure connected equipment does not exceed UPS rated capacity to prevent overload.

Hardware Installation Guide

Steps for connecting equipment to UPS outlets and proper placement.

Basic Operation

Power On Switch

Instructions for turning the UPS unit on and off, including alarm settings.

Power On Indicator

Explanation of the green LED indicator status during normal operation.

Battery and Surge Protected Outlets

Details on outlets providing battery backup and surge protection.

Full-Time Surge Protection Outlets

Information about outlets offering continuous surge suppression.

Circuit Breaker

Location and function of the circuit breaker for overload protection.

USB Port to PC

Describes the USB port for PC communication and status monitoring.

USB Charging Ports

Details on the USB ports providing 5V 2.1A power output for charging.

Widely-Spaced Outlets

Highlights the design of outlets to accommodate bulky adapters without blocking.

CyberPower GreenPower UPS Technology

FCC Compliance Statement

Limited Warranty and Connected Equipment Guarantee

Where Can I Get More Information?