ADC PowerWorx Circuit Breaker Panel With Reset Switch User Manual

®

PowerWorx

Power Distribution Products

Circuit Breaker Panel With Reset Switch
User Manual

ADCP-80-570

Issue 2

March 2006

20629-A

1361499 Rev A

ADCP-80-570 • Issue 2 • March 2006 • Preface

COPYRIGHT

© 2006, ADC Telecommunications, Inc.
All Rights Reserved
Printed in the U.S.A.

REVISION HISTORY

ISSUE DATE REASON FOR CHANGE

1 8/2005 Original.

2 3/2006 Wire colors corrected on Page 28.

TRADEMARK INFORMATION

ADC and PowerWorx are registered trademarks of ADC Telecommunications, Inc.

DISCLAIMER OF LIABILITY

Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no
event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further
disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of
liability applies to all products, publications and services during and after the warranty period.

This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891, extension 73475
(in U.S.A. or Canada) or 952-917-3475 (outside U.S.A. and Canada), or by e-mail to [e-mail].

Page ii

ADC Telecommunications, Inc.
P.O. Box 1101, Minneapolis, Minnesota 55440-1101
In U.S.A. and Canada: 1-800-366-3891
Outside U.S.A. and Canada: [phone]
Fax: [phone]

TABLE OF CONTENTS

TABLE OF CONTENTS

Content Page

About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Standard Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Admonishments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

General Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

List of Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi

1 PRODUCT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Product Functions and Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Panel Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3 Packaged Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.4 Power Buses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.5 Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.6 Input Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.7 Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.8 Output Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.9 Chassis Ground Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.10 Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.11 Power-on Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.12 Breaker Alarm Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.13 Alarm Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.14 Alarm Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.15 Reset Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.16 Circuit Breaker Designation Card and Holder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.17 Voltage Designation Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.18 Material and Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.19 Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.20 Protective Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.21 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.22 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.23 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3 UNPACKING AND INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.1 Installation Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.2 Materials Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.3 Pre-Installation Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.4 Cable Management Bar (Optional Accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.5 Mounting Panel on Rack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.6 Installing Designation Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.7 Installing Voltage Designation Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.8 Installing Ground Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.9 Connecting Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

ADCP-80-570 • Issue 2 • March 2006 • Preface

© 2006, ADC Telecommunications, Inc.

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ADCP-80-570 • Issue 2 • March 2006 • Preface

TABLE OF CONTENTS

TABLE OF CONTENTS

Content Page

4.10 Connecting Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.11 Connecting Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.12 Installing Protective Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5 TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.1 Testing Power Indicators and Connection Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.2 Testing Alarm Contacts Normal State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.1 Connecting New Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.2 Using the Reset Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.1 Performing a Routine Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.2 Replacing a Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

8 CUSTOMER INFORMATION AND ASSISTANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

A ALLOWABLE AMPACITIES OF INSULATED CONDUCTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

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© 2006, ADC Telecommunications, Inc.

ABOUT THIS MANUAL

This manual describes the PowerWorx Circuit Breaker Panel With Reset Switch, and provides
all information required to install, test, and operate this product.

STANDARD CERTIFICATION

The panel conforms to the applicable requirements of the following: UL/CSA/EN 60950, FCC
Part 15, CISPR 22, and CISPR 24.

ADMONISHMENTS

Important safety admonishments are used throughout this manual to warn of possible hazards to
persons or equipment. An admonishment identifies a possible hazard and then explains what
may happen if the hazard is not avoided. The admonishments — in the form of Dangers,
Warnings, and Cautions — must be followed at all times. These warnings are flagged by use of
the triangular alert icon (seen below), and are listed in descending order of severity of injury or
damage and likelihood of occurrence.

ADCP-80-570 • Issue 2 • March 2006 • Preface

Danger: Danger is used to indicate the presence of a hazard that will cause severe personal
injury, death, or substantial property damage if the hazard is not avoided.

Warn ing: Warning is used to indicate the presence of a hazard that can cause severe personal
injury, death, or substantial property damage if the hazard is not avoided.

Caution: Caution is used to indicate the presence of a hazard that will or can cause minor
personal injury or property damage if the hazard is not avoided.

GENERAL SAFETY PRECAUTIONS

-

Warn ing: The circuit breaker panel uses electrical voltage and current levels that may be
considered an energy hazard. Only qualified personnel should be allowed to install, operate,
maintain, or otherwise come into contact with this equipment when energized. Only insulated
tools should be used on energized elements of the panel.

Warn ing: Disconnect or turn off the power before connecting the input or output wires on the
circuit breaker panel. This may require turning off the system office battery input at the battery
distribution fuse bay or turning off the circuit breakers at the panel.

Warn ing: Wet conditions increase the potential for receiving an electrical shock when
installing or using electrically-powered equipment. To prevent electrical shock, never install or
use electrical equipment in a wet location or during a lightning storm.

© 2006, ADC Telecommunications, Inc.

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ADCP-80-570 • Issue 2 • March 2006 • Preface

Warn ing:

exceeds the maximum recommended ambient temperature of 55º C.

Warn ing:

rack must be bolted to the floor before you slide the unit out for servicing. Failure to
stabilize the rack can cause the rack to tip over.

Warn ing:

Warn ing:

overloaded.

LIST OF ACRONYMS

LED -- Light-Emitting Diode

To prevent the system from overheating, do not operate it in an area that

Stability hazard. The rack stabilizing mechanism must be in place, or the

Suitable for mounting on concrete or other non-combustible surface only.

Take care when connecting units to the supply circuit so that wiring is not

Page vi

© 2006, ADC Telecommunications, Inc.

1 PRODUCT DESCRIPTION

This section describes the PowerWorx Circuit Breaker Panel With Reset Switch. Topics include
product functions and features, panel components, packaged hardware, power buses, input
voltage, input connectors, output voltage, output connectors, chassis ground connections, circuit
breakers, power on indicators, breaker alarm indicators, alarm operation, alarm connections,
reset switch, circuit breaker designation card and holder, voltage designation label, material and
finish, cooling, protective covers, mounting, specifications, and dimensions.

1.1 Product Functions and Features

The Circuit Breaker Panel With Reset Switch supplies low-voltage, protected dc power to –24
Vdc or –48 Vdc powered equipment installed in a central office, multimedia headend, remote
site, or other restricted access location. The panel provides the following functions and features:

• Two side-by-side power buses, designated A and B, each with seven power outputs.

• Fourteen circuit breakers (seven per bus). Each bus has two 10 Amp circuit breakers and
five 5 Amp circuit breakers.

ADCP-80-570 • Issue 2 • March 2006

• Maximum input rating of 45 Amps per bus. This corresponds to a maximum input rating
of 90 Amps for the total panel.

• One Power On LED (green) and one Breaker Alarm LED (red) for each bus.

• One Reset switch for the total panel. The Reset switch allows the operator to reset the
panel to a non-alarming state if a breaker has been turned off or tripped due to an
overcurrent condition.

• Alarm contacts (screw-down barrier terminal strips) for remote reporting of an alarm
condition. The alarm contacts can be used to open or close a loop connected to an external
alarm system.

• Mounting brackets providing the ability to mount the panel in a 19-inch (482.6 mm) or 23­inch (584.2 mm) WECO or EIA equipment rack. The panel occupies one rack space (1.75
inches, 44.4 mm).

Note: The panel requires one open rack space above the chassis and one open rack space
below the chassis for heat dissipation.

• Two-hole compression-lug style terminals for input power connections.

• Screw-down barrier terminal strips for output power connections.

• Two chassis ground studs.

• Easy to remove rear protective covers. These covers mount over the input and output
power connections to prevent inadvertent contact.

1.2 Panel Components

Figure 1 shows the components of the circuit breaker panel.

© 2006, ADC Telecommunications, Inc.

Page 1

ADCP-80-570 • Issue 2 • March 2006

1 TO 7 CIRCUIT BREAKERS

BUS A

BUS A
POWER-ON
INDICATOR

(GREEN LED)

BUS B INPUT

POWER TERMINALS

BUS B OUTPUT

POWER TERMINALS

RESET

SWITCH

INDICATOR (RED LED)

FRONT VIEW

ALARM

TERMINALS

CHASSIS

GROUNDING

STUDS

BUS A ALARM

BUS B ALARM

INDICATOR (RED LED)

BUS A OUTPUT

POWER TERMINALS

BUS B
POWER-ON
INDICATOR

(GREEN LED)

BUS B

1 TO 7 CIRCUIT BREAKERS

DESIGNATION CARD

AND CARD HOLDER

BUS A INPUT

POWER TERMINALS

COVER FOR

INPUT POWER

TERMINALS

REAR VIEW

Page 2

© 2006, ADC Telecommunications, Inc.

COVER FOR

OUTPUT POWER

TERMINALS

COVER FOR

INPUT POWER

TERMINALS

Figure 1. Circuit Breaker Panel Components

20631-A

1.3 Packaged Hardware

The shipped product includes hardware components that are packaged separately and shipped in
the carton with the basic panel. Figure 2 shows the shipped items:

• 5/16-inch long, Phillips drive, 8-32 flat-head screws (8)—Used to secure the mounting
brackets to the panel.

• 3/8-inch long, combination drive, 12-24 pan-head screws (4) and #12 flat washers (4)—
Used to secure the panel mounting brackets to the equipment rack.

• #10 ring terminals (2) for #12–#10 AWG wire—Can be used to connect the grounding
cables to the grounding studs.

• 2-Hole Lugs for #6 AWG wire (4)—Used to connect input power cable to input power
terminal blocks.

ADCP-80-570 • Issue 2 • March 2006

REAR COVER FOR OUTPUT

POWER/ALARM TERMINAL BLOCK

2-HOLE LUGS FOR

6 AWG WIRE

VO LTAGE

LABEL

REAR COVERS FOR INPUT
POWER TERMINAL BLOCK

#10 RING TERMINALS FOR

12-10 AWG WIRE

5/16-INCH (7.936 MM) 8-32

FLAT-HEAD SCREWS

ORIENTATION FOR

19-INCH RACK INSTALLATION

3/8-INCH (9.525 MM) 12-24

SCREWS AND #12 WASHERS

ORIENTATION FOR

23-INCH RACK INSTALLATION

DESIGNATION CARD

AND CARD HOLDER

UNIVERSAL MOUNTING BRACKETS

AND SCREWS

20633-A

Figure 2. Packaged Hardware

Page 3

© 2006, ADC Telecommunications, Inc.

ADCP-80-570 • Issue 2 • March 2006

• Rear protective input terminal covers (2) and output/alarm terminal cover (1)—Used to

prevent accidental contact with the alarm and power terminals.

•#6-32 Screws (4)—Used to fasten output/alarm terminal cover to rear of panel chassis.

• Designation card and card holder (1)—Used to record information about the protected

equipment. Cards and clear cover insert into the card holder.

• Voltage label (1)—Used to indicate whether the input voltage is –48 or –24 Vdc.

1.4 Power Buses

Each circuit breaker panel has two isolated power buses. Each bus distributes the input power to
the output power circuits. In each bus circuit, current flows from the input power bus, through
the circuit breaker, to the output power circuit. The current capacity of each bus is 45 Amps
maximum. Figure 3 is a block diagram of the power buses.

–24V/–48V

BATTERY A

RETURN A

–24V/–48V

BATTERY B

RETURN B

BATTERY RETURN

1
2
3
4
5
6
7

BUS A

FA

RETURN A

BUS B

FB

RETURN B

BATTERY RETURN

1
2
3
4
5
6
7

POWER A LED

BREAKER
ALARM A LED

POWER B LED

BREAKER ALARM B LED

ALARM RESET PUSHBUTTON

20691-A

C
NO

NC

SYSTEM ALARM

C
NO

NC

CONNECTIONS

Page 4

© 2006, ADC Telecommunications, Inc.

Figure 3. Circuit Breaker Panel Block Diagram

Each of the power buses supports seven circuit breaker positions including two 10 Amp circuit
breaker positions and five 5 Amp circuit breaker positions giving a total capacity per bus of 45
Amps.

When a circuit breaker trips, the input power bus is disconnected from the corresponding output
circuit.

1.5 Input Voltage

The dual bus circuit breaker panel can accommodate either –24 Vdc on both buses or –48 Vdc on
both buses.

Warn ing: Use of one bus only on a dual bus panel will result in false alarms for the unused bus.
Power is required on both buses on a dual bus panel for normal operation.

The voltage level is sensed by the circuit breaker panel circuitry. The input voltages used with
the circuit breaker panel can fall within the following ranges:

• –24 Vdc nominal, within range of –21 Vdc to –30 Vdc

ADCP-80-570 • Issue 2 • March 2006

• –48 Vdc nominal, within range of –42 Vdc to –56 Vdc

1.6 Input Connectors

Each power bus has two input connectors on the rear of the circuit breaker panel through which
input power is provided. The two input power connectors are labeled “BATT” (battery) and “RTN”
(return). Each input connector consists of a pair of 0.25-inch (0.635 cm) studs (with nuts) mounted
on a plastic terminal block. Each pair of studs can accept different size 2-hole compression lugs used
with a range of wire sizes up to #6 AWG copper wire. Two 2-hole lugs per bus for use with #6 AWG
wire (four total) are provided with the circuit breaker panel. Additional lugs are available as
accessory items. Maximum lug width is 0.62 inches (1.6 cm). In selecting the copper wire size to be
used for power input, consider the allowable ampacity as defined by local practice and the National
Electrical Code (refer to Appendix A).

1.7 Output Voltage

The output voltage will be the same as the applied input voltage.

1.8 Output Connectors

Each bus has two screw-down terminal strips with seven 8-32 screws each on the back of the
panel. The upper terminal strip contains the BATT (power feed) connectors. The lower terminal
strip contains the RTN (return) connectors. When a piece of equipment is connected to the
circuit breaker panel, it is connected to one BATT connector and one RTN connector located
vertically above and below one another.

© 2006, ADC Telecommunications, Inc.

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ADCP-80-570 • Issue 2 • March 2006

The individual terminals are on 0.375 inch (9.525 mm) centers with a distance between barriers
of 0.32 inch (81.3 mm). The terminals can accept a variety of wire sizes up to #12 AWG with
crimp-on spade lug connectors or wires in sizes from #12 AWG to #22 AWG with the insulation
stripped back. The connectors or wires are inserted under the screws in the terminal strip, and
the screws are tightened down.

In selecting the copper wire size to be used for power output, consider the allowable ampacity as
defined by local practice and the National Electrical Code (refer to Appendix A).

1.9 Chassis Ground Connections

Two #10 studs (with nuts) are provided for grounding the circuit breaker panel chassis. The
studs are mounted on 0.625 inch (15.875 mm) centers, and can accommodate a 2-hole
compression lug. Two crimp ring lug terminals for use with two #10 AWG wires are provided
with the circuit breaker panel.

1.10 Circuit Breakers

The circuit breakers are magnetic actuation, manual reset, single pole, replaceable, 60 Vdc rated
circuit breakers, with finger guard and amperage markings. Each power bus has two 10 Amp
breakers and five 5 Amp breakers. The maximum capacity per bus is 45 Amps.

The circuit breakers are of the type called “short delay.” The trip times of short delay circuit
breakers are a function of the percent of rated current, as indicated in Tab l e 1. The circuit
breaker will trip (open) and the switch will move to the off position (bottom pushed in) when
the circuit current exceeds the capacity of the circuit breaker. To reset a circuit breaker, push the
switch to the on position (top pushed in).

Circuit breakers are field-replaceable. Please contact ADC Technical Support if replacement is
required (refer to Section 8, Customer Information and Assistance, on page 29).

100% 135% 150% 200% 400% 600% 800% 1000% 1200%

NO

TRIP

1.11 Power-on Indicators

A green LED Power On indicator for each power bus is mounted on the front panel of the circuit
breaker panel. If the LED indicator is on, power is being applied to the bus input connectors. If
the green LED indicator is off, power is not being applied to the bus input connectors.

.300-

7.00

Table 1. Short Delay Trip Times in Seconds

PERCENT OF RATED CURRENT

.200-

5.00

.100-

2.00

.030-

.500

.008-

.300

.006-

.150

.005-

.100

.005-

.100

Page 6

© 2006, ADC Telecommunications, Inc.