Cisco CRS-1 Carrier Routing System 16-Slot Line Card Chassis Installation Guide
Cisco CRS-1 16-Slot Line Card Chassis Specifications

Table Of Contents

Cisco CRS-1 16-Slot Line Card Chassis Specifications


Cisco CRS-1 16-Slot Line Card Chassis Specifications


The following table lists the specifications for the Cisco CRS-1 Carrier Routing System 16-Slot Line Card Chassis.

Table A-1 Line Card Chassis Specifications 

Physical dimensions
 

Height

80 in. (203 cm)

Depth

36 to 39.718 in. (91.440 to 100.884 cm)
Maximum depth includes front and rear doors.

Width

23.600 in. (59.944 cm)

Overhead clearance

24 in. (61 cm) overhead clearance recommended. This overhead clearance includes 12 in. (30.5 cm) for the tray and 12 in. (30.5 cm) for access to the cables.

Weight
 

Chassis with only fan trays and impedance carriers installed
(as shipped)

Chassis only: 1052 lb (477 kg)
Chassis in shipping crate: 1142 lb (518 kg)

Chassis with full cosmetics

1753 lb (795 kg)

Floor loading
 

Chassis footprint
floor contact area

4.720 sq. ft (4385 sq. cm)
680 sq. in. (4385 sq. cm)

Maximum floor loading

379 lb per sq. ft
1847 kg per sq. m

Cards or modules supported

16 modular services cards (MSCs)

16 MSC physical layer interface modules (PLIMs)

2 route processors

2 fan controller cards

8 switch fabric cards

2 alarm modules

2 fan trays

Power shelves

2 AC or 2 DC power shelves
(Cannot mix AC and DC power shelves)

DC power shelf

Supports three DC power entry modules (PEMs)
and one alarm module

AC power shelf

Supports three AC-to-DC rectifiers
and one alarm module

Power consumption
 

Maximum DC

13.9 kW (assuming 95% efficiency)

Maximum AC (3-phase Delta)

14.6 kW (assuming 90% efficiency)

Maximum AC (3-phase Wye)

14.6 kW (assuming 90% efficiency)

DC power lug torque ranges
 

Minimum torque

20 in-lb (2.2 N-m)

Maximum torque

30 in-lb (3.3 N-m)

Power redundancy
 

DC

2N: 6 A battery plant feeds and 6 B battery plant feeds required.

AC, 3-phase Delta

2N: 2 independent 3-phase AC Delta sources required.

AC, 3-phase Wye

2N: 2 independent 3-phase AC Wye sources required.

Inrush current
 

DC

129 A

AC

200 A

DC input
 

Nominal input voltage

-48 VDC North America
-60 VDC European Community
(range -42 to -75 VDC)

Input current

50 A max @ -48 VDC
40 A max @ -60 VDC

AC input, 3-phase Delta

3W+PE

Nominal input voltage

200 to 240 VAC
(range 180 to 264 VAC)

Nominal line frequency

50 or 60 Hz
(range 47 to 63 Hz)

Recommended AC service

60 A

AC input, 3-phase Wye

3W+N+PE

Nominal input voltage

200 to 240/346 to 415 VAC
(range 180 to 264/311 to 456 VAC)

Nominal line frequency

50 or 60 Hz
(range 47 to 63 Hz)

Recommended AC service

40 A (North America)
32 A (International)

Chassis cooling

2 fan trays, push-pull configuration

Chassis airflow

Up to 2050 cubic ft. (58,050 liters) per minute

Power shelf airflow

100 cubic ft. (2832 liters) to 140 cubic ft. (3964 liters) per minute


The following tables list the recommended wire sizes for the line card chassis. To prevent signal degradation, a conductor must be large enough to prevent its impedance from creating a voltage drop equal to 2 percent of the reference voltage. The protective earth conductor must also be large enough to carry all the current if the 48 VDC return fails. This latter requirement is for safety. Full fault redundancy is achieved by having equal size conductors for the protective earth ground and the 48 VDC return of the switch.

For wire gauges that prevent unacceptable voltage drops over different lengths of copper wire, see Table A-3. For the resistance of 1000 feet of copper wire for each gauge of wire, see Table A-4. These references are for planning and may be further subject to local laws and practices.


Note Table A-2 is for reference; we recommend using 50 A or greater. Table A-3 is for reference; we recommend using 6 gauge or greater.



Note These tables are for planning purposes and contain estimates only; actual figures are subject to local laws and practices.


Table A-2 Wire Gauge for Current Loads over Copper Wire Lengths 

DC Current
Distance in Feet
25 Feet
50 Feet
75 Feet
100 Feet
150 Feet
200 Feet
400 Feet

5 A

18 gauge

14 gauge

14 gauge

12 gauge

10 gauge

8 gauge

6 gauge

10 A

14 gauge

12 gauge

10 gauge

8 gauge

8 gauge

6 gauge

2 gauge

15 A

14 gauge

10 gauge

8 gauge

8 gauge

6 gauge

4 gauge

2 gauge

20 A

12 gauge

8 gauge

8 gauge

6 gauge

4 gauge

2 gauge

0 gauge

25 A

12 gauge

8 gauge

6 gauge

4 gauge

4 gauge

2 gauge

0 gauge

30 A

10 gauge

8 gauge

6 gauge

4 gauge

2 gauge

2 gauge

00 gauge

35 A

10 gauge

6 gauge

4 gauge

2 gauge

2 gauge

1 gauge

000 gauge

40 A

8 gauge

6 gauge

2 gauge

2 gauge

2 gauge

0 gauge

000 gauge

45 A

8 gauge

6 gauge

4 gauge

2 gauge

1 gauge

0 gauge

0000 gauge 

50 A

8 gauge

4 gauge

4 gauge

2 gauge

1 gauge

00 gauge

55 A

8 gauge

4 gauge

2 gauge

2 gauge

0 gauge

00 gauge

60 A

8 gauge

4 gauge

2 gauge

2 gauge

0 gauge

00 gauge

65 A

6 gauge

4 gauge

2 gauge

1 gauge

0 gauge

000 gauge

70 A

6 gauge

4 gauge

2 gauge

1 gauge

00 gauge

000 gauge

75 A

6 gauge

4 gauge

2 gauge

1 gauge

00 gauge

000 gauge

100 A

4 gauge

2 gauge

1 gauge

00 gauge

000 gauge


Table A-3 Resistance for Each Gauge of Copper Wire

Gauge
Ohms per 1000 Feet
Gauge
Ohms per 1000 Feet

0000

0.0489

10

0.9968

000

0.0617

11

1.257

00

0.0778

12

1.5849

0

0.098

13

1.9987

1

0.1237

14

2.5206

2

0.156

15

3.1778

3

0.1967

16

4.0075

4

0.248

17

5.0526

5

0.3128

18

6.3728

6

0.3944

19

8.0351

7

0.4971

20

10.1327

8

0.6268

21

12.7782

9

0.7908

22

16.1059