ADC Spectrum 7.0 User manual

ADCP-80-524 • Issue 1 • November 2001
1088905 Rev A Page 1
© 2001, ADC Telecommunications, Inc.
PowerWorx®Type 70 Series
Power Distribution Panel
User Manual
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Trademark Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Admonishments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Important Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Standard Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1 GENERAL CHARACTERISTICS AND FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1 Power Buses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
1.2 Redundant Power (Uninterrupted Power Fuse Panel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
1.3 Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
1.4 Input Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
1.5 Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
1.6 Output Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
1.7 Chassis Ground Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
1.8 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
1.9 Power-On Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Content Page
17068-A

ADCP-80-524 •Issue 1 •November 2001
Page 2
© 2001, ADC Telecommunications, Inc.
1.10 Fuse Alarm Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.11 Alarm Contact Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.12 Alarm Contact Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.13 Fuse Designation Strips and Perforated Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.14 Fused Equipment Designation Card and Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.15 Voltage Designation Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.16 Material and Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.17 Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.18 Protective Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.19 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.20 Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.21 Color . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.22 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.23 Environmental Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3 UNPACKING AND INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1 Recommended Installation Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2 Use of Screws in Installation Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3 Protective Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.4 Cable Management Bar (Accessory for Fuse Panels) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.5 Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.6 General Wiring Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.7 Chassis Ground Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.8 Output Power Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.9 External Alarm Contact Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.10 Input Power Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.11 Designation Strips and Perforated Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.12 Fuse Designation Card Holder and Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.13 Voltage Designation Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5 TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1 Quality Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.2 Resistance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3 Wiring Connections Torque Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.4 Power Indication Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.5 Connection Polarity Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.6 Fuse Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.3 Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.4 LED Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8 CUSTOMER INFORMATION AND ASSISTANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
_________________________________________________________________________________________________________

ADCP-80-524 •Issue 1 •November 2001
Page 3
© 2001, ADC Telecommunications, Inc.
INTRODUCTION
This manual describes the PowerWorx® Type 70 Series Power Distribution Panels and provides
installation, test, operation, and maintenance procedures. Two types of PowerWorx Type 70
power distribution fuse panels are available: the traditional power distribution fuse panel and
the uninterrupted power distribution fuse panel. Within this manual, the fuse panels are
referred to as the “traditional fuse panel” and “uninterrupted fuse panel.”
Revision History
Trademark Information
ADC and PowerWorx are registered trademarks of ADC Telecommunications, Inc.
Standards
Type 70 series fuse panels are compliant with all major standards including UL, NEC 1999, and
CSA standards. The fuse panel design places great emphasis on high reliability and simplicity
of operation.
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.
ISSUE DATE REASON FOR CHANGE
Issue 1 11/2001 Original
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.
Warning: 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.

ADCP-80-524 •Issue 1 •November 2001
Page 4
© 2001, ADC Telecommunications, Inc.
General Safety Precautions
-
Important Product Features
Both the traditional and uninterrupted fuse panel provide dc power over two separate buses
(feeds). However, with the uninterrupted fuse panel, when one bus loses input power, the other
bus supplies the output power for both buses.
Application: Type 70 series fuse panels are used to supply protected dc power to the various
types of telecommunications products typically used in central offices, multimedia headends,
remote sites, and other locations.
Input Power: Type 70 series fuse panels contain two buses (feeds) that accept –24 Vdc or –48
Vdc input power. The traditional fuse panel is rated at 65 Amps input current per bus for a total
output current of 130 Amps per fuse panel. The uninterrupted fuse panel is rated at 60 Amps
input current per bus but the total output current cannot exceed 60 Amps per panel. During
back-up operation, the uninterrupted can supply an output current of up to 30 Amps per bus or
one half of the 60 Amps input current provided by the working power source.
Output Power: Type 70 series fuse panels provide fuse protected output power with up to 8
fuse positions per bus. The selectable current rating for each fuse can be standard amperage
capacity type 70 fuses up to 10 Amps.
Type 70 series fuse panels incorporate several important features:
• Self-configuring input voltage (–24 Vdc or –48 Vdc) capability with up to 65 Amps per
bus (traditional fuse panel) and 60 Amps per bus (uninterrupted fuse panel) to simplify
installation and allow their use in most dc voltage applications
•A colored indicator that projects from the center of a blown type 70 fuse to quickly and
easily identify the affected fuse position
•Alarm contact connections built into the fuse panel for connection to external visual,
audio, and remote alarms
• Field-replaceable high-brilliance Power-On green and Alarm red LED indicators
• Easily-removable smoked plastic protective cover over connectors to enhance safety and
panel accessibility
• Two-post grounding to ensure robust and reliable ground connectivity
Caution: The fuse panel uses electrical voltage and amperage levels which, per GR-1089, may
be considered an electrical hazard. Care should be exercised to assure that only qualified
personnel are allowed to install, operate, maintain, or otherwise come in contact with this
equipment when the panel is energized. Only insulated tools should be used on energized
elements of the panel.
Caution: All fuse panel wiring and cabling should be connected with the system office battery
input off or disconnected at the office distribution panel.
Caution: A replacement fuse must be the same type and must have exactly the same current
rating as the fuse being replaced.

ADCP-80-524 •Issue 1 •November 2001
Page 5
© 2001, ADC Telecommunications, Inc.
Standard Equipment
Type 70 series fuse panels have two power buses (feeds). The capacity of each bus is eight fuse
positions with up to 10 Amps per fuse position (within the maximum bus capacity). Each bus
has Power-On and Alarm indicators on the front of the chassis and input, output, ground, and
alarm contact connections on the rear of the chassis.
The current capacity of each bus of the traditional power fuse panel is 65 Amps maximum (130
Amps per panel). The current capacity of each bus of the uninterrupted power fuse panel is 60
Amps maximum (60 Amps per panel).
The power dissipation of each fuse panel is 40 watts maximum at 130 Amps.
The dimensions of each fuse panel are 1.75 inches (4.45 centimeters) high, 17.13 inches (43.51
centimeters) wide, and 10.01 inches (25.42 centimeters) deep (does not include depth of
protective cover and connectors, fuses, and visual indicators that extend beyond the chassis.
Two sets of mounting brackets are provided with each fuse panel, one set for 19-inch (48.3 cm)
rack installations and one set for 23-inch (58.4 cm) rack installations. The fuse panel can be
flush or recess mounted in equipment racks with WECO or EIA hole spacing.
A typical traditional power fuse panel with protective cover in place is shown in Figure 1. A typical
uninterrupted power fuse panel with protective cover in place is shown in Figure 2.
Fuse panels are shipped without fuses. The required fuses are available separately as accessory
items.
Options
All fuse panels are available with the following options:
•Two types of output connectors: screw-down terminal strip connectors or set screw barrel
terminal strip connectors
•Two types of input connectors are available: two-hole compression-lug (stud-type) or set
screw barrel connectors
•The fuse panel color is either putty white or black color
Accessories
The following accessories are available:
• Standard type 70 fuses with standard values from 0.2 Amp to 10.0 Amps
•Cable management bar kit
•Four sizes of compression connector lugs for input power connections
•Fused equipment designation card kit
•Fuse designation card kit

ADCP-80-524 •Issue 1 •November 2001
Page 6
© 2001, ADC Telecommunications, Inc.
Figure 1. PowerWorx Type 70 Traditional Fuse Panel with Protective Cover in Place,
Front and Rear Views (Panel with 8 Fuses Installed on Each Bus Shown)
17067-A
VENTS
BUS A
FUSE FAILURE
INDICATOR
(RED LED)
BUS A
POWER-ON
INDICATOR
(GREEN LED) BUS B
FUSE FAILURE
INDICATOR
(RED LED) BUS B
POWER-ON
INDICATOR
(GREEN LED)
BUS A TYPE 70
FUSE HOLDER
(8 PER BUS)
BUS B TYPE 70
FUSE HOLDER
(8 PER BUS)
PROTECTIVE COVER
IN PLACE OVER
OUTPUT POWER, GROUND,
AND ALARM CONTACT
CONNECTIONS
BUS B INPUT
CONNECTORS
(SET SCREW
BARREL TYPE
SHOWN)
BUS A INPUT
CONNECTORS
(SET SCREW
BARREL TYPE
SHOWN)
UNIVERSAL
MOUNTING BRACKETS (2)
(INSTALLED FOR 19-IN.
(48.76 CM) RACK MOUNTING)
UL/CSA/CE
LABEL

ADCP-80-524 •Issue 1 •November 2001
Page 7
© 2001, ADC Telecommunications, Inc.
Figure 2. PowerWorx Type 70 Uninterrupted Fuse Panel with Protective Cover in Place,
Front and Rear Views (Panel with 8 Fuses Installed on Each Bus Shown)
16149-B
VENTS
HEAT SINK
(PATENT PENDING)
BUS A
FUSE FAILURE
INDICATOR
(RED LED)
BUS A
POWER-ON
INDICATOR
(GREEN LED)
BUS B
FUSE FAILURE
INDICATOR
(RED LED)
BUS B
POWER-ON
INDICATOR
(GREEN LED)
BUS A TYPE 70
FUSE HOLDER
(8 PER BUS)
BUS B TYPE 70
FUSE HOLDER
(8 PER BUS)
PROTECTIVE COVER IN
PLACE OVER INPUT POWER,
OUTPUT POWER, GROUND,
AND ALARM CONTACT
CONNECTIONS
UNIVERSAL
MOUNTING BRACKETS (2)
(INSTALLED FOR 19-IN.
(48.76 CM) RACK MOUNTING)
BUS B
FUSE VALUE
DESIGNATION
STRIP
BUS A
FUSE VALUE
DESIGNATION
STRIP

ADCP-80-524 •Issue 1 •November 2001
Page 8
© 2001, ADC Telecommunications, Inc.
1 GENERAL CHARACTERISTICS AND FEATURES
This section describes the general characteristics and features of the traditional and
uninterrupted fuse panels. The front of a typical traditional power fuse panel is shown in
Figure 3. The front of a typical uninterrupted power fuse panel is shown in Figure 4. The rear
side of the traditional power fuse panel (with protective cover removed to view the optional
connections) is shown in Figure 5. The rear side of the uninterrupted power fuse panel (with the
protective cover removed to view the optional connections) is shown in Figure 6. Options and
features other than those described may be available by special order.
Figure 3. ADC PowerWorx Type 70 Traditional Fuse Panel, Front View
(Panel with 8 Fuses Installed on Each Bus Shown)
Figure 4. PowerWorx Type 70 Uninterrupted Fuse Panel, Front View
(Panel with 8 Fuses Installed on Each Bus Shown)
16151-B
BUS A
FUSE FAILURE
INDICATOR
(RED LED)
BUS A
POWER-ON
INDICATOR
(GREEN LED)
BUS B
FUSE FAILURE
INDICATOR
(RED LED)
BUS B
POWER-ON
INDICATOR
(GREEN LED)
BUS A TYPE 70
FUSE HOLDER
(8 PER BUS)
BUS B TYPE 70
FUSE HOLDER
(8 PER BUS)
16152-B
BUS A
FUSE FAILURE
INDICATOR
(RED LED)
BUS A
POWER-ON
INDICATOR
(GREEN LED)
BUS B
FUSE FAILURE
INDICATOR
(RED LED)
BUS B
POWER-ON
INDICATOR
(GREEN LED)
BUS A TYPE 70
FUSE HOLDER
(8 PER BUS)
BUS B TYPE 70
FUSE HOLDER
(8 PER BUS)
BUS B
FUSE VALUE
DESIGNATION
STRIP
BUS A
FUSE VALUE
DESIGNATION
STRIP

ADCP-80-524 •Issue 1 •November 2001
Page 9
© 2001, ADC Telecommunications, Inc.
Figure 5. PowerWorx Type 70 Fuse Panel, Rear View with Protective Cover Removed (Panel with
Compression Lug Input Connectors and Set Screw Barrel Terminal Strip Output Connectors Shown)
Figure 6. PowerWorx Type 70 Fuse Panel, Rear View with Protective Cover Removed (Panel with Set
Screw Barrel Input Connectors and Screw-Down Barrier Terminal Strip Connectors Shown)
16155-A
CHASSIS
GROUND
TERMINALS
BUS A AND BUS B
ALARM CONTACT
CONNECTOR
(WIRE-WRAP PIN
BLOCK TYPE)
BUS B INPUT
CONNECTORS
(TWO HOLE
COMPRESSION
LUG-STUD TYPE) (2)
BUS A INPUT
CONNECTORS
(TWO HOLE
COMPRESSION
LUG-STUD TYPE) (2)
TO
BATTERY
B
TO
RETURN
B
TO
BATTERY
A
TO
RETURN
A
BATTERY B
OUTPUT RETURN
CONNECTORS (SET
SCREW BARREL
TERMINAL TYPE)
BATTERY A
OUTPUT RETURN
CONNECTORS (SET
SCREW BARREL
TERMINAL TYPE)
BATTERY B
OUTPUT POWER
CONNECTORS (SET
SCREW BARREL
TERMINAL TYPE)
BATTERY A
OUTPUT POWER
CONNECTORS (SET
SCREW BARREL
TERMINAL TYPE)
PROTECTIVE COVER
MOUNTING STANDOFFS
(2 SETS OF 4)
16154-B
CHASSIS
GROUND
TERMINALS
BUS A AND BUS B
ALARM CONTACT
CONNECTOR
(WIRE-WRAP PIN
BLOCK TYPE)
TO
BATTERY
B
TO
RETURN
B
TO
BATTERY
A
TO
RETURN
A
BUS A OUTPUT POWER
CONNECTORS (SCREW-
DOWN BARRIER
TERMINAL STRIP TYPE)
BUS A OUTPUT RETURN
CONNECTORS (SCREW-
DOWN BARRIER
TERMINAL STRIP TYPE)
BUS B OUTPUT POWER
CONNECTORS (SCREW-
DOWN BARRIER
TERMINAL STRIP TYPE)
PROTECTIVE COVER
MOUNTING STANDOFFS
(2 SETS OF 2)
BUS B OUTPUT RETURN
CONNECTORS (SCREW-
DOWN BARRIER
TERMINAL STRIP TYPE)
INTERNAL
CONNECTIONS.
DO NOT REMOVE
CAPS OR
TURN SCREWS
INTERNAL
CONNECTIONS.
DO NOT REMOVE
CAPS OR
TURN SCREWS
BUS B INPUT CONNECTORS
(SET SCREW BARREL TYPE)
BUS A INPUT CONNECTORS
(SET SCREW BARREL TYPE)

ADCP-80-524 •Issue 1 •November 2001
Page 10
© 2001, ADC Telecommunications, Inc.
1.1 Power Buses
Each fuse panel has two separate power buses (feeds). Each bus distributes the input power to
the output power circuits. In each bus circuit, current flows from the input power bus, through
the fuse, to the output power circuit. A typical fuse panel block diagram is shown in Figure 7.
The current capacity of each bus of the traditional power fuse panel is 65 Amps maximum. The
output fusing of the traditional fuse panel should not exceed 65 Amps per bus. This provides a
total capacity of 130 Amps per panel. The maximum current per bus is marked on the fuse
panel.
The current capacity of each bus of the uninterrupted power fuse panel is 60 Amps maximum.
However, the output fusing of the uninterrupted fuse panel should not exceed 30 Amps per bus.
This provides a total capacity of 60 Amps per panel. The maximum current per bus is marked
on the fuse panel.
Each of the feed buses has a capacity of eight fuse positions. Other fuse capacity configurations
may be available by special order. When a fuse fails, the input power bus is disconnected from
the corresponding output circuit. This causes the alarm LED for the bus to light and also opens
or closes the alarm relay contacts (form C contacts).
1.2 Redundant Power (Uninterrupted Power Fuse Panel)
The uninterrupted power fuse panel provides redundant power to fused equipment through the
use of Schottky steering diodes. When power to one bus is interrupted, the Schottky steering
diodes enable the other bus to supply power to the entire fuse panel and to maintain output
power for both buses (bus A and bus B). If bus A loses power, bus B will support the power load
of bus A while maintaining its original power load. Likewise, if bus B loses power, bus A will
support the power load of bus B while maintaining its original power load.
1.3 Input Voltage
The fuse panel can accommodate either –24 Vdc on both buses or –48 Vdc on both buses. The
voltage level is sensed by the fuse panel circuitry. The input voltage used with the fuse panel can
have the following characteristics:
• –24 Vdc nominal, within range of –21 Vdc to –30 Vdc
• –48 Vdc nominal, within range of –42 Vdc to –56 Vdc
Fuse panels for use with other input voltage and polarity power may be available by special
order.

ADCP-80-524 •Issue 1 •November 2001
Page 11
© 2001, ADC Telecommunications, Inc.
Figure 7. PowerWorx Type 70 Fuse Panel Block Diagram (Traditional Power Fuse Panel Shown)
1.4 Input Connectors
Each bus is equipped with two (2) input connectors on the rear of the fuse panel through which
input power is applied. The two input power connectors are labeled BATT (battery) and RTN
(return) on the fuse panel. The following types of input connectors are available:
• Two-hole compression lug (stud type) connectors: Each connector consists of two studs
mounted on a plated copper bar and two nuts. Each set of studs can accept various size 2-
hole lugs which can be used with a number of wire sizes ranging from #14 to #2 AWG
copper wire. Various lugs are available as accessories.
•Set screw barrel connectors: Each connector has two (2) barrels. On each connector, the
barrel that is closest to the outside of the fuse panel (barrel without a cap) is used to secure
1
2
3
4
5
6
7
8
BATTERY RETURN
BATTERY A
RETURN A
POWER A LED
FUSE
ALARM A LED
1
2
3
4
5
6
7
8
BATTERY RETURN
BATTERY B
RETURN B
BUS A
RETURN A
POWER B LED
FUSE
ALARM B LED
BUS B
RETURN B
–24V/–48V
–24V/–48V
C
NO
NC
C
NO
NC
SYSTEM ALARM
CONNECTIONS
16758-A

ADCP-80-524 •Issue 1 •November 2001
Page 12
© 2001, ADC Telecommunications, Inc.
the wire to the connector. The barrel on each connector that is closest to the center of the
fuse panel (barrel with a cap over it) is not used or accessed. The wire is inserted into the
connector and the set screw is tightened down, compressing the wire. The set screw barrel
connectors can accept up to #6 AWG copper wire.
1.5 Output Voltage
The output voltage will be the same voltage as the applied input voltage when the fuse does not fail.
1.6 Output Connectors
Each output circuit has two connectors through which the output power is accessed for
connection to telecommunications equipment. The following types of output connectors are
available:
•Screw-down barrier terminal strip: Eight terminals with 6-32 screws are mounted in two
barrier type terminal strips per bus (one strip for input and one strip for return). The
terminals are on 0.375 inch (9.525 mm) centers with a maximum distance between
barriers (maximum connecting terminal width) of 0.325 inch (8.255 mm). Terminals can
accept #12 to #22 AWG copper wire with crimp-on spade lug or ring connectors or wires
with the insulation stripped back.
•Set screw barrel terminal strip: Eight barrel terminals are mounted in two set screw barrel
terminal strips per bus (one strip for input and one strip for return). The terminals are on
0.197 inch (5.004 mm) centers. Terminals can accept #12 to #26 AWG copper wire with
insulation stripped back.
1.7 Chassis Ground Connection
Two #10 studs mounted on 0.625 inch (15.875 mm) centers are provided for grounding the fuse
panel chassis. This chassis ground connection can be used to attach a separate grounding
conductor when mounting the fuse panel in non-grounded or non-conducting material or when
required by local practice. The studs can accommodate 2-hole lugs and up to #6 AWG wire.
Two crimp ring lug terminals for use with #10 AWG wire are enclosed with the fuse panel. The
fuse panel can be properly grounded using only one grounding stud.
1.8 Fuses
The fuse panel accommodates industry standard type 70 fuses with values from 0.02 Amp to
10.0 Amps in any fuse position within the maximum capacity of the bus (total fuse load cannot
exceed bus capacity). The maximum fuse value that can be used in each fuse position is 10.0
Amps which is marked on the front panel.
The type 70 fuse contains a colored indicator that designates the fuse value. When the fuse
blows, the indicator extends out of the fuse to indicate that the fuse has blown. Fuse panels are
shipped without fuses installed. Standard type 70 fuses are available from ADC.

ADCP-80-524 •Issue 1 •November 2001
Page 13
© 2001, ADC Telecommunications, Inc.
1.9 Power-On Indicator
A visual power-on indicator (green LED) for each power bus is mounted on the front panel of
the fuse panel. A lighted LED indicates that power is applied to the bus input connectors. An
unlighted LED indicates that power is not applied to the bus input connectors. The LED can
easily be replaced in the field if it fails.
1.10 Fuse Alarm Indicator
A visual fuse alarm indicator (red LED) is provided on the front panel for each power bus. The
fuse alarm indicator lights when any fuse on the corresponding bus fails. The fuse alarm
indicator is off when all fuses on the corresponding bus are operational. Loss of power to a bus
will not cause the fuse alarm indicator corresponding to that bus to be lighted. The LED can be
easily replaced in the field if it fails.
1.11 Alarm Contact Operation
Each bus contains circuitry that opens and closes a set of alarm contacts when any fuse on the
bus fails or when the input power to the bus is lost. These contacts may be used to open or close
a loop connected to an external alarm system.
The alarm circuitry provides Form C alarm relay contacts. During normal operation, the
normally open (NO) contacts remain open and the normally closed (NC) contacts remain
closed. When a fuse fails on either bus or power to either bus is lost, the NO contacts close
creating a connection between NO and common (C) and the NC contacts open creating an open
circuit between NC and common. The current rating for each set of alarm relay contacts (three
sets are provided) is 1.0 Amp maximum.
1.12 Alarm Contact Connection
Alarm contact connections are provided through three sets of wire wrap pins located on the rear
side of the fuse panel. Each set of wire wrap pins is labeled with a suggested use for monitoring
the fuse panel: audio, visual, and remote. The wire wrap pins can accept #22 to #26 AWG
copper wire.
1.13 Fuse Designation Strips and Perforated Cards
Plastic designation strips with clear plastic covers are mounted above the fuse holders for each
bus. Four card sheets, each with three perforated strips, are provided with the fuse panel. The
perforated strips may be marked with the circuit designations/fuse values for each circuit/fuse
on the bus. The perforated strips are then inserted into the designation strips so that the
information on the perforated strip is positioned above the corresponding fuses. Additional
perforated strip cards and plastic covers can be ordered from ADC if required.

ADCP-80-524 •Issue 1 •November 2001
Page 14
© 2001, ADC Telecommunications, Inc.
1.14 Fused Equipment Designation Card and Holder
Two fuse designation cards, shown in Figure 8, and a card holder with a clear plastic cover are
provided with the fuse panel. The card holder may be attached to the fuse panel, the fuse panel
mounting brackets, to the rack, or a location close to the fuse panel. One of the cards may be
filled out with circuit information for each of the circuits and inserted in the card holder. The
card holder has a pressure sensitive adhesive backing for attachment. Additional fused
equipment designation cards, card holders, and plastic covers can be ordered from ADC if
required.
Figure 8. Fuse Designation Cards
1.15 Voltage Designation Label
A voltage designation label, shown in Figure 9, is provided with the fuse panel. The label may
be filled out with the actual voltage present on the buses and placed on the panel. The voltage
designation label has a pressure sensitive adhesive backing for attachment.
Figure 9. Voltage Designation Label
1.16 Material and Finish
The fuse panel chassis and brackets are made of 16-gauge cold rolled steel. The panel and
brackets are finished with powder paint.
1.60 IN.
(4.06 CM)
2.36 IN.
(5.99 CM)
12486-C
1.60 IN.
(4.06 CM)
2.36 IN.
(5.99 CM)
20 POSITION CARD 10 POSITION A AND B CARD
0.38 IN.
(0.96 CM)
1.00 IN.
(2.54 CM)
14228-A

ADCP-80-524 •Issue 1 •November 2001
Page 15
© 2001, ADC Telecommunications, Inc.
1.17 Cooling
Vent openings are provided in the top and bottom of the fuse panel. The vent openings allow
convection cooling of all components without the use of fans or blowers.
1.18 Protective Cover
A smoked plastic protective cover is mounted over the input power connectors, the output
power connectors, the chassis ground terminals, and the external alarm contact connections. To
access the connectors and terminals, the cover may be easily removed by loosening (but not
removing) four screws.
1.19 Dimensions
The dimensions of the traditional power fuse panel are shown in Figure 10. The dimensions of
the uninterrupted power fuse panel are shown in Figure 11.
Figure 10. Dimensions of Type 70 Traditional Power Fuse Panel
(with Mounting Brackets Attached for 19-Inch [48.26 cm] Rack Mounting)
16158-B
17.13 IN.
(43.51 CM)
18.31 IN.
(46.51 CM)
19.0 IN.
(48.26 CM)
1.13 IN.
(2.86 CM)
1.75 IN.
(4.45 CM)
10.01 IN.
(25.42 CM)
11.35 IN.
(28.82 CM)

ADCP-80-524 •Issue 1 •November 2001
Page 16
© 2001, ADC Telecommunications, Inc.
Figure 11. Dimensions of Type 70 Uninterrupted Power Fuse Panel
(with Mounting Brackets Attached for 19-Inch [48.26 cm] Rack Mounting)
1.20 Weight
The weight of both the traditional and uninterrupted fuse panel is approximately 14 pounds
(6.35 kilograms). The actual weights are dependent upon the configurations of the panels.
1.21 Color
The color of the fuse panel and mounting brackets is either putty white or black.
1.22 Mounting
The fuse panel can be mounted in either a 19- or 23-inch (48.26 or 58.42 cm) equipment rack.
Both the traditional and the uninterrupted panel are equipped with two sets (one set for 19-inch
racks and one set for 23-inch racks) of mounting brackets. The panel can be flush mounted or
recessed 1, 2, 3, or 4 inches (25.4, 50.8, 76.2, or 101.6 mm) from the front of the rack. The
16157-B
17.13 IN.
(43.51 CM)
18.31 IN.
(46.51 CM)
19.0 IN.
(48.26 CM)
10.01 IN.
(25.42 CM)
11.35 IN.
(28.82 CM)
1.13 IN.
(2.86 CM)
1.73 IN.
(4.39 CM)

ADCP-80-524 •Issue 1 •November 2001
Page 17
© 2001, ADC Telecommunications, Inc.
mounting brackets allow mounting with WECO 1.00-inch (2.54 cm) hole spacing or EIA 1.25-
inch (3.18 cm) hole spacing. The slotted mounting hole pattern in the mounting brackets
compensates for vertical rack differences and allows mounting the fuse panel in either 1.75- or
2-inch (4.45 or 5.08 cm) rack spaces.
1.23 Environmental Characteristics
The environmental characteristics of the PowerWorx Type 70 Series Power Distribution Fuse
Panel are listed in Table 1.
2 ACCESSORIES
The following accessories for the PowerWorx Type 70 fuse panel are available:
• Standard Type 70 fuses with current capacity of from 0.2 Amp to 10.0 Amps
•Cable management bar with mounting screws. Provides cable tie points. Installed at rear
of fuse panel by fastening ends of bar to both sides of the panel
•Four sizes of two-hole compression lugs for #2, #4, #6, and #14 AWG wire for input
power connection
•Kit of perforated fuse value designation cards and plastic covers
•Kit of fused equipment designation cards, a card holder, and a plastic cover
Table 1. PowerWorx Type 70 Fuse Panel Environmental Characteristics
PARAMETER DESCRIPTION
Operating temperature –5° C to +50° C
Storage temperature –45° C to +85° C
Humidity range 0% to 95% humidity (non-condensing)
Altitude range –197 ft. (0.06 km) to 13,000 ft. (3.96 km) above sea level
Fire rating All components UL94-V1 or better
Acoustic noise 0 dBA above ambient
Heat dissipation (fully loaded
traditional panel) 40
watts maximum@ 65 A per bus, 80 watts maximum @ 130 A
total fuse panel load
Heat dissipation (no load) 1 watt per bus

ADCP-80-524 •Issue 1 •November 2001
Page 18
© 2001, ADC Telecommunications, Inc.
3 UNPACKING AND INSPECTION
Unpack and inspect the various components as follows:
1. Inspect the exterior of the shipping container for evidence of handling that may have
damaged the components in the container.
2. Unpack each container while carefully checking the contents for damage and verify with
the packing slip.
3. File a claim with the commercial carrier and notify ADC Customer Service if damage is
detected or if parts are missing. Save damaged cartons for inspection by the carrier.
4. Refer to Section 8, Customer Information and Assistance, at the back of this manual, for
repair, replacement, and warranty information.
5. Save all shipping containers for use if the equipment requires return shipment at a future date.
4 INSTALLATION
Fuse panels must be installed in a central office, equipment room, or restricted access location.
The following guidelines should be used when mounting the fuse panel in a rack.
• Mount the fuse panel in the uppermost area of the rack to reduce exposure of the power
wiring.
• Provide a minimum of 1.75 inches (4.45 cm) of air space (one rack space) between the top
of the fuse panel and the next item in the rack for cooling.
• Adding a fuse panel to a rack may displace a device which may require relocation.
4.1 Recommended Installation Tools
Use common hand tools, such as a Phillips screwdriver, a wire wrap gun and bits, a wire
stripper, and a wire lug crimper to install the fuse panel. In addition to these tools, the following
tools are recommended:
Caution: This equipment employs electrical voltage and amperage levels which may be
considered an electrical hazard. Care should be exercised to assure that only qualified
personnel are allowed to install, operate, maintain, or otherwise come in contact with this
equipment when the fuse panel is energized. Only insulated tools should be used on energized
elements of the fuse panel.
Warning: Never install telephone equipment in a wet location or during a lightning storm.
When installing or modifying telephone lines, disconnect lines at the network interface before
working with uninsulated lines or terminals to prevent electrical shock.

ADCP-80-524 •Issue 1 •November 2001
Page 19
© 2001, ADC Telecommunications, Inc.
•Power screwdriver with Phillips head bit and slotted head bit
•Set of sockets and driver
•Set of open end or box end wrenches
16776-A
PHILLIPS SCREW
HEAD BIT
16794-A
16795-A

ADCP-80-524 •Issue 1 •November 2001
Page 20
© 2001, ADC Telecommunications, Inc.
• Torque screwdriver calibrated in pound-force inches or Newton meters with Phillips head
bit and slotted head bit
4.2 Use of Screws in Installation Package
Several types of screws are provided with the fuse panel. The screws used with the rack-
mounting brackets are thread-forming screws which help to provide a solid ground path
between the panel chassis and the rack. Use the power screwdriver to install these screws.
4.2.1 Screws to Attach Brackets to Fuse Panel
To fasten the mounting brackets to the fuse panel, use the 5/15-inch (7.94 mm) long, black
chromate finish 8-32 flat-head screws as shown in Figure 12. Eight screws (four for each
bracket) are provided.
Figure 12. Screw for Attaching Brackets to Power Panel Chassis
4.2.2 Screws to Attach Brackets to Rack
To fasten the mounting brackets to the rack, use the four nickel plated 12-24 screws as shown in
Figure 13. Four screws (two for each bracket) are provided.
Caution: When installing the fuse panel, use only the hardware supplied with the panel. Use of
any other hardware could cause damage to the panel. If parts are missing, please contact ADC.
16797-A
5/16-IN.
(7.936 mm)
THREAD FORMING SCREW,
FLAT HEAD UNDERCUT,
PHILLIPS DRIVE
16977-A
8 - 32
THREAD