MGE UPS Systems EPS 8000 User Manual

w w w . m g e u p s . c o m

EPS 8000 UPS

Single Module

Users Manual

EPS 8000 UPS Single Module

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS – This manual contains important instructions for all EPS 8000 UPS Single Module that must be followed during operation of the equipment.

WARNING:	Opening enclosures expose hazardous voltages. Always refer
	service to qualified personnel only.
ATTENTION:	L'ouverture des cabinets expose des tensions dangereuses.
	Assurez-vous toujours que le service ne soit fait que par des
	personnes qualifiees.
WARNUNG!	Das öffnen der Gehäuse legen gefährliche Spannungen bloss.
	Service sollte immer nur von qualifizierten Personal durchgeführt
	werden.

WARNING:	As standards, specifications, and designs are subject to change,
	please ask for confirmation of the information given in this
	publication.
ATTENTION:	Comme les normes, spécifications et produits peuvent changer,
	veuillez demander confirmation des informations contenues dans
	cette publication.
WARNUNG!	Normen, Spezifizierungen und Pläne unterliegen Anderungen.
	Bitte verlangen Sie eine Bestätigung über alle Informationen, die in
	dieser Ausgabe gemacht wurden.

NOTE:	This equipment generates, uses, and can radiate radio
	frequency energy and, if not installed and used in accordance
	with installation manual, may cause harmful interference to
	radio communications. Operation of this equipment in a
	residential area is likely to cause harmful interference in which
	case the user will be required to correct the interference at his
	own expense.

page ii

Important Safety information

Users Manual

EPS 8000 UPS

Single Module

Users Manual

For service call

1-800-523-0142

86-132217-00 A02 06/03

Copyright © 2003 MGE UPS SYSTEMS, Inc. All rights reserved. Printed in U.S.A.

MGE UPS SYSTEMS, Inc.

1660 Scenic Avenue Costa Mesa, CA 92626 [phone]

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EPS 8000 UPS Single Module

EPS 8000 UPS

Single Module Users Manual

Warranty

The liability of MGE UPS SYSTEMS, Inc. hereunder is limited to replacing or repairing at MGE UPS SYSTEMS, Inc.’s factory or on the job site at MGE UPS SYSTEMS, Inc.’s option, any part or parts which are defective, including labor, for a period of 12 months from the date of purchase. The MGE UPS SYSTEMS, Inc. shall have the sole right to determine if the parts are to be repaired at the job site or whether they are to be returned to the factory for repair or replacement. All items returned to MGE UPS SYSTEMS, Inc. for repair or replacement must be sent freight prepaid to its factory. Purchaser must obtain MGE UPS SYSTEMS, Inc.’s Return Materials Authorization prior to returning items. The above conditions must be met if warranty is to be valid. MGE UPS SYSTEMS, Inc. will not be liable for any damage done by unauthorized repair work, unauthorized replacement parts, from any misapplication of the item, or for damage due to accident, abuse, or Act of God.

In no event shall the MGE UPS SYSTEMS, Inc. be liable for loss, damage, or expense directly or indirectly arising from the use of the units, or from any other cause, except as expressly stated in this warranty. MGE UPS SYSTEMS, Inc. makes no warranties, express or implied, including any warranty as to merchantability or fitness for a particular purpose or use. MGE UPS SYSTEMS, Inc. is not liable for and Purchaser waives any right of action it has or may have against MGE UPS SYSTEMS, Inc. for any consequential or special damages arising out of any breach of warranty, and for any damages Purchaser may claim for damage to any property or injury or death to any person arising out of its purchase of the use, operation or maintenance of the product. MGE UPS SYSTEMS, Inc. will not be liable for any labor subcontracted or performed by Purchaser for preparation of warranted item for return to MGE UPS SYSTEMS, Inc.’s factory or for preparation work for field repair or replacement. Invoicing of MGE UPS SYSTEMS, Inc. for labor either performed or subcontracted by Purchaser will not be considered as a liability by the MGE UPS SYSTEMS, Inc.

This warranty shall be exclusive of any and all other warranties express or implied and may be modified only by a writing signed by an officer of the MGE UPS SYSTEMS, Inc. This warranty shall extend to the Purchaser but to no one else. Accessories supplied by MGE UPS SYSTEMS, Inc., but manufactured by others, carry any warranty the manufacturers have made to MGE UPS SYSTEMS, Inc. and which can be passed on to Purchaser.

MGE UPS SYSTEMS, Inc. makes no warranty with respect to whether the products sold hereunder infringe any patent, U.S. or foreign, and Purchaser represents that any specially ordered products do not infringe any patent. Purchaser agrees to indemnify and hold MGE UPS SYSTEMS, Inc. harmless from any liability by virtue of any patent claims where Purchaser has ordered a product conforming to Purchaser’s specifications, or conforming to Purchaser’s specific design.

Purchaser has not relied and shall not rely on any oral representation regarding the Product sold hereunder and any oral representation shall not bind MGE UPS SYSTEMS, Inc. and shall not be part of any warranty.

There are no warranties which extend beyond the description on the face hereof. In no event shall MGE UPS SYSTEMS, Inc. be responsible for consequential damages or for any damages except as expressly stated herein.

Service and Factory Repair - Call 1-800-523-0142

Direct questions about the operation, repair, or servicing of this equipment to MGE UPS SYSTEMS, Inc. Technical Support Services. Include the part number and serial number of the unit in any correspondence. Should you require factory service for your equipment, contact MGE UPS SYSTEMS, Inc. Technical Support Services and obtain a Return Materials Authorization (RMA) prior to shipping your unit. Never ship equipment to MGE UPS SYSTEMS, Inc. without first obtaining an RMA.

Proprietary Rights Statement

The information in this manual is the property of MGE UPS SYSTEMS, Inc., and represents a proprietary article in which MGE UPS SYSTEMS, Inc., retains any and all patent rights, including exclusive rights of use and/or manufacture and/or sale. Possession of this information does not convey any permission to reproduce, print, or manufacture the article or articles shown herein. Such permission may be granted only by specific written authorization, signed by an officer of MGE UPS SYSTEMS, Inc.

IBM, PC-AT, ES/9000, and AS/400 are trademarks of International Business Machines Corporation. MGE and MGE UPS SYSTEMS are trademarks of MGE UPS SYSTEMS, Inc. Other trademarks that may be used herein are owned by their respective companies and are referred to in an editorial fashion only.

Revision History

EPS 8000 UPS Single Module Users Manual
86-132217-00
Copyright © 2003 MGE UPS SYSTEMS, Inc.		All rights reserved	Printed in U.S.A.
Revision: A01	ECN#003192	04/2003
A02	ECN#003395	06/2003

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Warranty Information

Users Manual

How To Use This Manual

This manual is designed for ease of use and easy location of information.

To quickly find the meaning of terms used within the text, look to the Glossary.

To quickly find a specific topic, look at the Table of Contents.

This manual uses Note lines and icons to convey important information.

Note lines and icons come in four variations.

WARNING:	Indicates information provided to protect the User and
	service personnel against safety hazards and possible
	equipment damage.

CAUTION:	Indicates information provided to protect the User and
	service personnel against possible equipment damage.

NOTE:	Indicates information provided as an operating tip or an
	equipment feature.

IMPORTANT:	Indicates information provided as an operating instruction
	or as a tip.

How To Use This Manual

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EPS 8000 UPS Single Module

CAUTION

RECORD ALL SERIAL NUMBERS FOR THE SINGLE MODULE UPS SYSTEM.

THESE SERIAL NUMBERS WILL BE REQUIRED IF YOUR SYSTEM NEEDS SERVICE. KEEP THIS MANUAL IN A PLACE WHERE YOU CAN REFERENCE THE SERIAL NUMBERS IF SERVICE IS REQUIRED!

UPS UNIT SERIAL NUMBER: _____________________________________________

MBP CABINET SERIAL NUMBER: ________________________________________

ADDITIONAL SERIAL NUMBERS:

__________________________ ______________________________

__________________________ ______________________________

__________________________ ______________________________

__________________________ ______________________________

__________________________ ______________________________

__________________________ ______________________________

__________________________ ______________________________

__________________________ ______________________________

__________________________ ______________________________

__________________________ ______________________________

CAUTION: Record All Serial Numbers

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Users Manual

C o n t e n t

section	description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . .page
	Important Safety Instructions . . . . . . . . . . . . . . . . .	Inside Front Cover
	Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . .ivi
	Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . .iv
	How To Use This Manual . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . .v
	CAUTION: Record All Serial Numbers . . . . . . . . .	. . . . . . . . . . . .vi
	Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . .c-i

Section 1 Introduction

section	description	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .page
1.0	Scope . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . .1-1
1.1	Reference Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. . .1-1
1.2	Section Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. . .1-1
1.3	General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. . .1-2
1.4	Specifications, Circuit Breakers and Powerflow Diagrams		. . . .1-3
1.4.1	Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. . .1-3
1.4.2	Power Flow Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. . .1-5
	1.4.2.1	Normal Operation . . . . . . . . . . . . . . . . . . . . .	. . .1-5
	1.4.2.2	On-Battery Operation . . . . . . . . . . . . . . . . . . .	. . .1-5
1.5	Single Module Indicators and Controls . . . . . . . . . . . . . . .		. . .1-6
1.5.1	Front Panel .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .1-7
1.5.2	Alphanumeric Display and Controls . . . . . . . . . . . . . . . . . .		. . .1-8
	1.5.2.1	Two-line Alphanumeric Display . . . . . . . . . . .	. . .1-8
	1.5.2.2	Alphanumeric Display Pushbuttons Descriptions .1-9
	1.5.2.3	Numbered Lights . . . . . . . . . . . . . . . . . . . . . .	. .1-10
1.5.3	Hidden Panel Indicators . . . . . . . . . . . . . . . . . . . . . . . . . .		. .1-10
	1.5.3.1	LED Alphanumeric Indicator . . . . . . . . . . . . .	. .1-11
	1.5.3.2 Hidden Panel Lower Pushbuttons . . . . . . . . .		. .1-12

Contents

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EPS 8000 UPS Single Module

Section 2 Operation
section	description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .page
2.0	Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . .2-1
2.1	Status Screen Display . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-1
2.2	Settings Selection Screen . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-2
2.3	Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-2
2.4	Sensor Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-3
2.5	Voltage Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-4
2.6	Current Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-5
2.7	Power Frequency Measurements . . . . . . . . . . . . . . . . . . .	. . .2-6
2.8	Battery Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-7
2.9	LCD Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-8
2.9.1	General Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-8
2.9.2	Secondary Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-9
2.10	Preparations Before Start-up . . . . . . . . . . . . . . . . . . . . . . .	. .2-13
2.10.1	Checks Before Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . .	. .2-13
2.10.2	Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. .2-14
2.10.3	Checks After Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. .2-15
2.11	Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. .2-15
2.11.1	Emergency Shutdown Using EPO . . . . . . . . . . . . . . . . . . .	. .2-15
2.11.2	Normal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. .2-16
2.11.3	With Maintenance Bypass . . . . . . . . . . . . . . . . . . . . . . . . .	. .2-16
2.11.4	Without Maintenance Bypass . . . . . . . . . . . . . . . . . . . . . .	. .2-17
2.12	Forced Transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. .2-18
2.12.1	Uninterrupted Transfer Conditions . . . . . . . . . . . . . . . . . . .	. .2-18
2.12.2	Forced Transfer from Bypass AC Input Source to Inverter	. . .2-18
2.12.3	Forced Transfer from Inverter to Bypass AC Input . . . . . . .	. .2-18

Section 3	Maintenance
	section	description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	page
	3.0	Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	.3-1
	3.1	Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	.3-1
	3.2	Important Safety Instructions for Servicing Batteries . . . . . . . .	.3-1
	3.3	Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .	.3-2
	3.4	Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	.3-2
Glossary	g-1

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Contents

Users Manual

Figures

figure	description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .page
1-1	EPS 8000 System, S-M Configuration, 1 GCC per Module . . .	. . . .1-2
1-2	Circuit Breaker Locations on the EPS 8000. (Q4S not shown)	. . . .1-3
1-3	Circuit Breaker Locations on the Maintenance Bypass Cabinet	. . .1-4
1-4	Circuit Breaker Locations on the Q4S Cabinet. . . . . . . . . . . . . . . .1-4
1-5	Normal Operation, Power Flow Diagram . . . . . . . . . . . . . . . . .	. . .1-5
1-6	On-Battery Operation, Power Flow Diagram . . . . . . . . . . . . . . .	. . .1-5
1-7	EPS 8000 Front Panel Indicators and Controls. . . . . . . . . . . . . . . .1-6
1-8	Front Panel Indicators and Control Display . . . . . . . . . . . . . . .	. . .1-7
1-9	Alphanumeric Display and Controls . . . . . . . . . . . . . . . . . . . . .	. . .1-8
1-10	Hidden Panel Indicator Controls . . . . . . . . . . . . . . . . . . . . . . . .	. .1-10
2-1	Default Status Screen Alphanumerical Display Configuration. . .	. . .2-1
2-2	Settings Selection Display Screen. . . . . . . . . . . . . . . . . . . . . . . . .2-2
2-3	Sequential Alarm Messages for Viewing the Fault Log . . . . . . .	. . .2-3
2-4	Measurement Sensors Located throughout the EPS 8000 S-M UPS2-3
2-5	Voltage Measurement Displays . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-4
2-6	Current Measurements Displays . . . . . . . . . . . . . . . . . . . . . . .	. . .2-5
2-7	Power and Frequency Measurements Displays . . . . . . . . . . . .	. . .2-6
2-8	Battery Measurements Displays . . . . . . . . . . . . . . . . . . . . . . . .	. . .2-7

Contents

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EPS 8000 UPS Single Module

(This page left blank intentionally)

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Users Manual

I n t r o d u c t i o n

1.0Scope

This manual provides User instructions for operating the EPS 8000 UPS Single Module system (S-M). Descriptions include section descriptions, a general overview of system internal components, circuit breaker diagrams, descriptions for front panel displays and control indicators.

Please read this manual before installing the EPS 8000 equipment. Please retain this manual for future reference.

1.1Reference Manuals

The EPS 8000 UPS Installation Manual (MGE part number 86-132215-00) provides detailed operating instructions for the EPS 8000 Single Module and Shared Systems. The EPS 8000 UPS Shared Systems Users Manual, (MGE part number 86-132216-00) provides detailed operating instructions for shared systems.

86-132216-00 EPS 8000 Users Manual, Shared System

86-132215-00 EPS 8000 Installation Manual, Single Module and Shared Systems 86-132204-00 Graphical Command Center, User Manual

1.2Section Descriptions

This manual is divided into four sections:

Section 1 Introduction

This section provides User instructions for operating the EPS 8000 UPS Single Module system. Descriptions include section descriptions, a general overview of system internal components, circuit breaker diagrams, descriptions for front panel displays and control indicators.

Section 2 Operation

This section describes procedures for normal operation of EPS 8000 Single Module systems. Including interactive front panel display, settings for language configuration, alarms message displays, voltage, current, battery measurements, with before and after start-up checks, emergency shutdown using EPO disconnects, and normal conditions for using forced transfers.

Section 3 Maintenance

This section describes maintenance of the EPS 8000, including troubleshooting LCD alarm message, safety instructions, preventive maintenance, isolation for maintenance, and information about replacement parts.

A Glossary in the rear of this manual provides definitions of terms used within the text.

Introduction

page 1 — 1

EPS 8000 UPS Single Module

1.3General Description

EPS 8000 is a family of compact, high-efficiency uninterruptible power systems. Standard power ratings for singlemodule systems range from 555 to 800 kVA. EPS 8000 UPS are optimized for compatibility with non-linear computer-type loads. Computer-aided UPS diagnostics and modular construction assures that any required service on the UPS can be identified and completed rapidly. Remote system monitoring, remote annunciation of UPS performance signals, and telecommunication capabilities allow total control of the UPS by the user.

The EPS 8000, SSC, battery, and all auxiliary equipment is listed for safety by Underwriter’s Laboratories, Inc. (UL) under UL Standard 1778 and under Canadian Standards Association (CSA) standard C22.107.

Major components of the EPS 8000 Single Module include:

UPS Single Module

UPS maintenance bypass cabinet

UPS bypass cabinet

Battery disconnect

Each of these cabinets is described below. Figure 1-1 shows a single-module UPS.

Figure 1-1: EPS 8000 System, S-M Configuration, 1 GCC per Module.

page 1 — 2

Introduction

Users Manual

1.4 Specifications, Circuit Breakers and Powerflow Diagrams

1.4.1 Circuit Breakers

EPS 8000 UPS circuit breakers (except the battery disconnect circuit breaker QF1) are located behind the doors of the Input/Output cabinet. Following is a brief description of the available circuit breakers and contacts, and their function (Figures 1-2, 1-3, and 1-4).

Q1	Input isolation circuit breaker, used to isolate the UPS from the main AC input (mains 1) and provide
	input current protection.
QF1	Battery disconnect circuit breaker, external to the UPS, used to disconnect the battery from the UPS.
	QF1 provides isolation and protection between the UPS and its battery system.
Q3BP	(optional) Maintenance bypass circuit breaker, used to supply the attached load via the bypass source
	while the UPS is being serviced.
Q5N	Optional UPS isolation circuit breaker, used to isolate the UPS module from the attached load.
Q4S	Bypass input circuit breaker; it is used to isolate the UPS from the bypass input (mains 2) source and
	provide back-feed protection. This circuit breaker is mounted inside the Input/Output cabinet for 625
	and 555 kVA units.

Figure 1-2: Circuit Breaker Locations on the EPS 8000. (Q4S not shown)

INPUT

CB, Q1

Introduction

page 1 — 3

EPS 8000 UPS Single Module

Figure 1-3: Circuit Breaker Locations on the Maintenance Bypass Cabinet.

GROUND
BYPASS INPUT	OUTPUT
A, B, C	A, B, C
NEUTRAL
	Q5N
	Q3BP
	Q4S
	(optional)

Figure 1-4: Circuit Breaker Locations on the Q4S Cabinet.

	NEUTRAL
	GROUND	BYPASS INPUT
		A, B, C
		BYPASS INPUT CB
		Q4S

page 1 — 4

Introduction

Users Manual

1.4.2 Power Flow Diagrams

1.4.2.1 Normal Operation

During normal operation, power flows from the main AC input source (mains 1) into the UPS rectifier/battery charger section. The rectifier/battery charger converts the AC voltage to DC, maintains the charge of the battery, and feeds the DC power to the inverter. The inverter regenerates AC voltage, and supplies the attached load. See Figure 1-5.

Figure 1-5: Normal Operation, Power Flow Diagram.

Static switch

Bypass AC input (mains 2)

		Rectifier/battery					Inverter
		charger
Main AC input									Attached
(mains 1)									load(s)

Battery

1.4.2.2 On-Battery Operation

If the main AC input source (mains 1) fails or goes out of tolerance, the charger stops. Power flows from the battery to the UPS inverter, which in turn supplies the attached load. When the main AC input source (mains 1) returns, the charger restarts automatically and the UPS resumes its normal operation. See Figure 1-6.

If the battery becomes depleted before the main AC input source (mains 1) returns, the inverter stops and the attached load is transferred to the bypass AC input source (mains 2) if it is available.

Figure 1-6: On-Battery Operation, Power Flow Diagram.

Static switch

Bypass AC input (mains 2)

		Rectifier/battery					Inverter
		charger
Main AC input									Attached
(mains 1)									load(s)

Battery

Introduction

page 1 — 5

EPS 8000 UPS Single Module

1.5Single Module Indicators and Controls

Single Module indicators and controls are located in three places on the UPS cabinet: on the front panel, behind a drop-down cover just below the front panel, and inside the cabinet doors, see Figure 1-7. In battery cabinets and auxiliary cabinets, the controls are located behind the cabinet doors.

The following display descriptions:

Front Panel

Alphanumeric Display

Hidden Panel

Figure 1-7: EPS 8000 Front Panel Indicators and Controls..

page 1 — 6

Introduction

Users Manual

1.5.1Front Panel

The UPS front panel, includes the emergency power off (EPO) pushbutton, the audible alarm, four LEDs that serve as system status indicators, the “inverter on” pushbutton, and the “inverter off” pushbutton. See Figure 1-8.

Figure 1-8: Front Panel Indicators and Control Display.

EPO

On the left side of the front panel, an emergency power off (EPO) pushbutton is provided, with a protective cover to guard against inadvertent operation. This pushbutton, when activated, disconnects the main AC input (mains 1), bypass AC input (mains 2), and battery power to the UPS, and disconnects output power to the attached load.

Audible alarm	(item 1) The audible alarm provides an audible warning to the operator by sounding
	a pulsed “beep” when any of the following conditions occur:
	Load transferred to bypass (mains 2)
		Load supplied via battery
		Operating problem

¡Load not protected

⁄Operating problem

ıBattery

During minor alarm conditions, the alarm sounds at a slow rate and a low sound level. When the battery approaches the low-voltage shutdown level, the alarm sounds louder and at an increased rate. If the inverter shuts down, the alarm sounds loudly and continuously.

An audible alarm reset is located on the hidden panel. See Figure 1-7. Pressing it will silence the alarm. Should a higher-level alarm condition occur after the reset has been activated, the audible alarm will sound the new alarm condition.

(item 2 ) This red LED turns on when any of these conditions occur:

The load is no longer protected following an inverter shutdown, or the opening of the isolation circuit breaker (Q5N).

The battery circuit breaker QF1 is open, making battery power unavailable.

(item 3) This orange LED turns on when an operating problem exists, such as fan failure; static switch power supply fault; battery temperature fault;

overload fault; or bypass AC input (mains 2) out of tolerance. The UPS continues to protect the attached load.

(item 4) This orange LED turns on to indicate that the attached load is being partially or completely supplied by the battery. When the main AC input (mains 1) fails or is outside tolerance, stored battery energy is supplied to the inverter, which in turn supplies the load.

Í	Load protected	(item 5) This green LED indicates that the attached load is supplied by
		the inverter and protected by the battery. During normal operation, this
		LED is the only one that is on.
Inverter on		(item 6) This green pushbutton is used to start the inverter. When it is pushed, the
		green “load protected” LED flashes for three seconds, indicating that the start
		command has been received. When the inverter has synchronized with the bypass

Introduction

page 1 — 7