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S7700 and S9700 Series Switches Hardware Installation and Maintenance Guide

This document describes hardware installation procedures of the S7700 and S9700 series switches, troubleshooting methods for common hardware faults, and switch maintenance instructions.
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High-Voltage DC Power Supply

High-Voltage DC Power Supply

Power Supply Configuration Without Power Distribution Boxes

NOTE:

The 3000 W AC power module supports only 240 V high-voltage DC power input.

Table 5-19, Table 5-20 lists the power modules applicable to the S7700 series switches and configurations of the power modules.
Table 5-19  Configurations of the power modules applicable to the S7703, S7706 and S7712

Device Model

Maximum Power Consumption of Chassis

Power Module

System Power Module Configuration

PoE Power Module Configuration

S7703

1000 W (without PoE power supply)

3000 W AC power module

1+0, 1+1 (recommended)

1+0

S7706

2200 W (without PoE power supply)

3000 W AC power module

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

1+0, 1+1, 2+0, 2+2, 3+0, 3+1, 4+0

S7712

4200 W (without PoE power supply)

3000 W AC power module

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

1+0, 1+1, 2+0, 2+2, 3+0, 3+1, 4+0

Table 5-20  Configurations of the power modules applicable to the S7703 PoE and S7706 PoE switch

Device Model

Maximum Power Consumption of Chassis

Power Module

Power Module Configuration

S7703 PoE

1185 W (without PoE power supply)

3000 W AC power module

1+0, 1+1, 2+0, 2+1, 3+0

S7706 PoE

2640 W (without PoE power supply)

3000 W AC power module

1+0, 1+1, 2+0, 2+1, 2+2, 3+0, 3+1, 3+2, 3+3, 4+0, 4+1, 4+2, 4+3, 4+4, 5+0, 5+1, 6+0, 6+1, 7+0, 7+1, 8+0

Table 5-21 lists the power modules applicable to the S9700 series switches and configurations of the power modules.
Table 5-21  Configurations of the power modules applicable to the S9700 series switches

Device Model

Maximum Power Consumption of Chassis

Power Module

Power Module Configuration

S9703

1185 W

3000 W AC power module

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

S9706

2640 W

3000 W AC power module

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

S9712

4906 W

3000 W AC power module

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

  • If the PoE function is not required or supported, you do not need to configure PoE power modules. Determine the number of PoE power modules according to your needs.

  • In V200R012C00 and later versions, 3000 W AC power modules can all be used as PoE power modules.

  • The 3000 W AC power module can be used only on switches running V200R012C00 and later versions.

  • The S7703 PoE and S7706 PoE chassis do not have independent PoE power slots. They can provide PoE power after a power module is installed in a power slot and a PoE-supported card is installed. When the PoE function of a chassis is used, the sum of the PoE power and system power is the total output power of the chassis. You can run the display poe power and display power system commands to view the PoE power on interfaces and the system power of the chassis, respectively.

  • Figure 5-31 shows the 1+1 redundancy of system power modules and 1+0 configuration of PoE power module in a switch.
    Figure 5-31  1+1 redundancy of power modules
  • Figure 5-32 shows the 2+2 redundancy of system power modules and 2+2 configuration of PoE power module in a switch.
    Figure 5-32  2+2 redundancy of power modules
  • (Only for S9712) Figure 5-33 shows the 3+3 redundancy of power modules.
    Figure 5-33  3+3 redundancy of power modules
Table 5-22 describes the requirements for high-voltage DC power distribution.
Table 5-22  Requirements for high-voltage DC power distribution

Power Module

Power Cable Connector Type

Maximum Power Supply Distance

Number of Inputs

Circuit Breaker Rated Current

Output Terminal Type on Power Distribution Device

3000 W AC power module

C19 straight female

3 m

Equal to the number of power modules

≥ 16 A

  • C20 straight male connector: connected to a PDU
  • PI angle male connector: connected to a country-specific power strip
  • Cord end terminal: connected to a power distribution frame
  • For 3000 W AC power modules, select the power cables with the maximum current of larger than or equal to 16 A.
  • Each AC 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. The power supply distance is the cable length between the power distribution frame and power module.

  • A 3000 W AC power module provides a maximum output power of 3000 W when the input voltage is 220 V. When the input voltage is 110 V, the maximum output power reduces to 1500 W.

  • To use 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.

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Updated: 2019-05-15

Document ID: EDOC1000069522

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