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S12700 and S12700E Series Agile Switches Hardware Installation and Component Replacement

This document describes hardware installation procedures of the S12700 series switches, troubleshooting methods for common hardware faults, and switch maintenance instructions.
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DC Power Supply

DC Power Supply

Power Supply Configuration Without Power Distribution Boxes

Table 5-3 and Table 5-4 list the power modules applicable to the S12700 and S12700E series switches and configurations of the power modules.
Table 5-3 Configurations of the power modules applicable to the S12700 series switches

Device Model

Maximum Power Consumption of Chassis

Power Module

Power Module Configuration

S12704

2550 W

2200 W DC power module

1+0, 1+1, 2+0, 2+1 (recommended), 2+2, 3+0, 3+1, 4+0

S12708

5234 W

2200 W DC power module

1+0, 1+1, 2+0, 2+1, 2+2, 3+0, 3+1 (recommended), 3+3, 4+0, 4+1

S12710

4644 W

2200 W DC power module

1+0, 1+1, 2+0, 2+1 (recommended), 2+2

S12712

6790 W

2200 W DC power module

1+0, 1+1, 2+0, 2+1, 2+2, 3+0, 3+1, 3+3, 4+0, 4+1 (recommended)

Table 5-4 Configurations of the power modules applicable to the S12700E series switches

Device Model

Maximum Power Consumption of Chassis

Power Module

Power Module Configuration

S12700E-4

3344 W

2200 W DC power module

1+0, 1+1, 2+0, 2+1 (recommended), 2+2, 3+0, 3+1, 4+0

S12700E-8

6950 W

2200 W DC power module

1+0, 1+1, 2+0, 2+1, 2+2, 3+0, 3+1 (recommended), 3+3, 4+0, 4+1, 5+0, 5+1, 6+0

S12700E-12

8981 W

2200 W DC power module

1+0, 1+1, 2+0, 2+1, 2+2, 3+0, 3+1, 3+3, 4+0, 4+1 (recommended) 5+0, 5+1, 6+0

The following figures show the full configurations of power modules in a switch.

  • As shown in Figure 5-5:

    • Two system power modules of the S12700/S12700E work in 1+1 redundancy mode.

    Figure 5-5 1+1 redundancy of power modules
  • Figure 5-6 shows the 2+2 redundancy of power modules.
    • Two system power modules of the S12700/S12700E work in 2+2 redundancy mode.

    Figure 5-6 2+2 redundancy of power modules
  • Figure 5-7 shows the 3+3 redundancy of power modules.
    Figure 5-7 3+3 redundancy of power modules
Table 5-5 describes the requirements for DC power distribution
Table 5-5 Requirements for DC power distribution

Power Module

Technical Specifications

Power Cable Cross-Sectional Area

Maximum Power Supply Distance

Number of Inputs

Circuit Breaker Rated Current

Output Terminal Type on Power Distribution Device

2200 W DC power module

  • Rated input voltage: -48 V DC/-60 V DC
  • Input voltage range: -40 V DC to -72 V DC
  • Maximum input current: 60 A
  • Maximum output current: 42 A

10 mm2

Delivered with power modules, with a fixed length of 3 m

3 m

Equal to the number of power modules

≥ 60 A

DC quick-connect terminals.

  • Each DC power module must be connected to an independent circuit breaker.

  • The current rating of the circuit breaker cannot be smaller than the maximum current allowed by the power cable.

NOTE:
  • Select appropriate power cables according to the power supply distances. If the required power supply distance exceeds the maximum power supply distance, use power distribution boxes. The power supply distance is the cable length between the power distribution frame and power modules.

  • When using the N+N redundancy mode, equally divide the power modules into two groups and connect the two groups of power modules to two independent power supply systems. This configuration provides redundancy of power supply systems to enhance system reliability.
  • The current rating of the upper-level circuit breaker cannot be smaller than the maximum current allowed by the power cable.

Power Supply Configuration with Power Distribution Boxes

Table 5-6 and Table 5-7 list the power modules applicable to the S12700 and S12700E series switches and configurations of the power modules.
Table 5-6 Configurations of the power modules applicable to the S12700 series switches

Device Model

Maximum Power Consumption of Chassis

Power Distribution Box

Power Module

Power Module Configuration

S12704

2550 W

2200 W DC power distribution box

2200 W DC power module

1+0, 1+1, 2+0, 2+1 (recommended), 2+2, 3+0, 3+1, 4+0

S12708

5234 W

2200 W DC power distribution box

2200 W DC power module

1+0, 1+1, 2+0, 2+1, 2+2, 3+0, 3+1 (recommended), 3+3, 4+0, 4+1

S12710

4644 W

2200 W DC power distribution box

2200 W DC power module

1+0, 1+1, 2+0, 2+1 (recommended), 2+2

S12712

6790 W

2200 W DC power distribution box

2200 W DC power module

1+0, 1+1, 2+0, 2+1, 2+2, 3+0, 3+1, 3+3, 4+0, 4+1 (recommended)

Table 5-7 Configurations of the power modules applicable to the S12700E series switches

Device Model

Maximum Power Consumption of Chassis

Power Distribution Box

Power Module

Power Module Configuration

S12700E-4

3344 W

2200 W DC power distribution box

2200 W DC power module

1+0, 1+1, 2+0, 2+1 (recommended), 2+2, 3+0, 3+1, 4+0

S12700E-8

6950 W

2200 W DC power distribution box

2200 W DC power module

1+0, 1+1, 2+0, 2+1, 2+2, 3+0, 3+1 (recommended), 3+3, 4+0, 4+1, 5+0, 5+1, 6+0

S12700E-12

8981 W

2200 W DC power distribution box

2200 W DC power module

1+0, 1+1, 2+0, 2+1, 2+2, 3+0, 3+1, 3+3, 4+0, 4+1 (recommended), 5+0, 5+1, 6+0

The following figures show the full configurations of power modules in a switch.

NOTE:

If more than one power module is installed in a switch, you can connect the power modules to the same power source or different power sources. It is recommended that you connect the power modules to different power sources to improve power reliability.

  • As shown in Figure 5-8:

    • When a 2200 W DC power distribution box is used, two system power modules of the S12700/S12700E work in 1+1 redundancy mode.

    Figure 5-8 2200 W DC power distribution box and 1+1 redundancy of DC power modules (different power sources)
  • As shown in Figure 5-9:

    • When a 2200 W DC power distribution box is used, two system power modules of the S12700/S12700E work in 1+1 redundancy mode. If the equipment room does not have many power sources but has 126 A circuit breakers, the two power modules can be connected to the same power source. The power input line can be split into two in the power distribution box using a short-circuiting bar.

    NOTE:
    • To use a single power input for the two power modules, ensure that the rated current of the circuit breaker connected to the power modules is larger than 126 A and the circuit breaker must be connected to a 35 mm2 power cable.
    • Redundant input and output terminals on the power distribution box can be left for future use.
    Figure 5-9 2200 W DC power distribution box and 1+1 redundancy of DC power modules (same power source)
  • As shown in Figure 5-10:

    • When a 2200 W DC power distribution box is used, four system power modules of the S12700/S12700E work in 2+2 redundancy mode.

    Figure 5-10 2200 W DC power distribution box and 2+2 redundancy of DC power modules (different power sources)
  • As shown in Figure 5-11:

    • When a 2200 W DC power distribution box is used, four system power modules of the S12700/S12700E work in 2+2 redundancy mode. If the equipment room does not have many power sources but has 126 A circuit breakers, the power modules can be connected to the same power source. The power input line can be split into two in the power distribution box using a short-circuiting bar.

    NOTE:
    • To use a single power input for the two power modules, ensure that the rated current of the circuit breaker connected to the power modules is larger than 126 A and the circuit breaker must be connected to a 35 mm2 power cable.
    • Redundant input and output terminals on the power distribution box can be left for future use.
    Figure 5-11 2200 W DC power distribution box and 2+2 redundancy of DC power modules (same power source)
  • Figure 5-12 shows the power distribution system with a 2200 W DC power distribution box and 3+3 redundancy of DC power modules.
    Figure 5-12 2200 W DC power distribution boxes and 3+3 redundancy of DC power modules
Generally, the internal power cables between power distribution boxes and cabinets are installed beforehand. Use the power cables delivered with DC power modules of the switch as the internal power cables. The external power cables between power distribution boxes and power distribution frames need to be installed onsite. Table 5-8 describes requirements for external power cables.
Table 5-8 Requirements for external power cables

Power Module

Technical Specifications

Power Cable Cross-Sectional Area

Maximum Power Supply Distance (Circuit Breaker Rated Current)

Number of Inputs

Output Terminal Type on Power Distribution Device

2200 W DC power module

  • Rated input voltage: -48 V DC/-60 V DC
  • Input voltage range: -40 V DC to -72 V DC
  • Maximum input current: 60 A
  • Maximum output current: 42 A

16 mm2

18 m (≥ 63 A)

Equal to the number of power modules

OT terminals or cord end terminals. To use other types of terminals, purchase the terminals and prepare cables onsite.

25 mm2

29 m (≥ 63 A)

35 mm2

  • 41 m (≥ 63 A)

  • 20 m (≥ 126 A)

  • Each DC power module must be connected to an independent circuit breaker.

  • The current rating of the circuit breaker cannot be smaller than the maximum current allowed by the power cable.

NOTE:

When using the N+N redundancy mode, equally divide the power modules into two groups and connect the two groups of power modules to two independent power supply systems. This configuration provides redundancy of power supply systems to enhance system reliability.

Use of a 2200 W DC Power Distribution Box

Figure 5-13 shows how a 2200 W DC power distribution box is connected to power modules in an S12708 chassis when the power modules work in 1+1 redundancy and require inputs from different power sources.
Figure 5-13 Use of a 2200 W DC power distribution box for 1+1 redundancy of power modules in an S12708 chassis
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Updated: 2019-09-29

Document ID: EDOC1000069460

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