N77-AC-3KW-RF

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N77-AC-3KW-RF

Description:

Cisco Refurbished
Original Part No : N77-AC-3KW=

Nexus7700-3.0KW ACPwrSupModule(CableIncluded) REMANUFACTURED
AED 0

Availability: In stock


Available Quantity: 3500

Delivery Time: 2 to 4 week

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  • Details

    The Cisco Nexus® 7700 platform switches are the latest extension to the modular Cisco Nexus 7000 Series Switches. The Cisco Nexus 7700 switches have operational and feature consistency with the existing Cisco Nexus 7000 Series Switches, using a common system architecture, the same application-specific integrated circuit (ASIC) technology, and the same proven Cisco® NX-OS Software releases.

    The Cisco Nexus 7700 AC and DC power supply modules (Figures 1 and 2) deliver fault tolerance, high efficiency, load sharing, and hot-swappable power features to the Cisco Nexus 7700 switches. The Cisco Nexus 7700 switches use 3.0-kilowatt (kW) power supplies that are 90 percent efficient or greater, so less power is dissipated as heat, and more power is available to the system to use than with typical power supplies. The high-efficiency 3.0-kW power supplies allow a smaller power configuration and provide flexible power provisioning.

    The maximum output for the 3.0-kW AC power supplies is 1400 or 3000 watts (W) if input power is 110 or 220 VAC respectively, and the dual input 3.0-kW DC power scale is 1500 or 3000W if one or two inputs respectively are active. Both the AC and DC versions support multiple system-level redundancy options for greater availability. Designed to address high-availability requirements, the power supplies incorporate internal component-level monitoring, temperature sensors, and intelligent remote-management capabilities.

    The power supplies are fully hot swappable, helping ensure no system interruption during installation or upgrades. They are fitted at the bottom front of the Cisco Nexus 7700 chassis, allowing installation and removal without disturbing the network cabling of the I/O modules.

    Figure 1.      Cisco Nexus 7700 3.0-kW AC Power Supply Module

    Figure 2.      Cisco Nexus 7700 3.0-kW DC Power Supply Module

    Cisco Nexus 7700 3.0-kW AC Power Supply

    The 3.0-kW AC power supply module for the Cisco Nexus 7700 switch is a single 20-ampere (A) AC input power supply. Connection to high line nominal voltage (220 VAC) will produce a power output of 3000W. Connection to low line nominal voltage (110 VAC) will produce a power output of 1400W. Table 1 shows the available power output for the input options.

    Table 1.       Available Output Based on Input Power

    Number of Inputs

    Input Power

    Output

    Single input

    220 volts (V)

    3000W

    110V

    1400W

    Cisco Nexus 7700 3.0-kW DC Power Supply

    The 3.0-kW DC power supply has two isolated input stages, each delivering up to 1500W of output power. Each stage uses a -48V DC connection. The power supply will deliver 1500W when only one input is active and 3000W when two inputs are active.

    Table 2 shows the available power output for the input options.

    Table 2.       Available Output Based on Input Power

    Number of Inputs

    Input Power

    Output

    Single input

    -48V

    1500W

    Dual input

    -48V

    3000W

    Figure 3 shows the connections to the power supply inputs.

    Figure 3.      Cisco Nexus 7700 3.0-kW DC Power Supply Module Connections and Power Ratings

    Cisco Nexus 7700 Platform Power Supply Redundancy

    The power supplies on the Cisco Nexus 7700 chassis provide multiple load sharing and fault tolerance and are hot swappable. A maximum of 2 power supplies are supported on the Cisco Nexus 7700 2-Slot Switch, a maximum of 4 power supplies are supported on the Cisco Nexus 7700 6-Slot Switch, a maximum of 8 power supplies are supported on the Cisco Nexus 7700 10-Slot Switch, and a maximum of 16 power supplies are supported on the Cisco Nexus 7700 18-Slot Switch. The 2, 4, 8, and 16 power supply bays for the 6-slot, 10-slot, and 18-slot Cisco Nexus 7700 platform chassis, respectively, are designed for redundancy and future growth.

    Use of multiple smaller power supplies provides flexible power provisioning and redundancy in the event of power supply failure. These power supplies also support grid redundancy to allow for grid failure or failure of facility components such as an uninterruptible power supply (UPS) or a circuit breaker.

    Cisco Nexus 7700 systems can operate in four user-configurable power-redundancy modes, summarized in Table 3, to meet the redundancy needs of the environment.

    Table 3.       Power-Redundancy Modes

    Redundancy Mode

    Description

    Combined

    This mode does not provide redundancy. The power available to the system is the sum of power outputs of all power supplies in the chassis.

    Power supply redundancy (N+1): Default

    This mode guards against the failure of one of the power supplies. The redundant power available to the system is the sum of all power outputs less one of the maximum-rated power supplies.

    Input source redundancy (grid redundancy)

    This mode guards against failure of one power supply or input circuit (grid), with at least half the power supplies connected to a different independent AC or DC feed. The power available to the system is the minimum power from both the grids. If one of the power supplies fails, the operational power redundancy mode changes to combined mode (supported only with 220V input).

    Power supply and input source redundancy (full redundancy)

    This mode guards against the failure of one power supply or one grid. The power available is the minimum power from the input source and power supply redundancy. If one of the power supplies fails, the operational power redundancy mode changes to the power supply redundancy (N+1) mode.

    The total amount of power available to the Cisco Nexus 7700 switch depends on the type of power supplies installed and the configured power supply redundancy mode. The 3.0-kW AC power supply supports operation with 110 and 220V, which results in different levels of output power for the different redundancy modes. The 3.0-kW DC power supply supports single or dual input, which results in different levels of output power for the different redundancy modes.

    Features and Benefits

    Table 4 summarizes the features and benefits of the Cisco Nexus 7700 3.0-kW AC power supply modules.

    Table 4.       Features and Benefits of Cisco Nexus 7700 3.0-kW AC Power Supply Modules

    Feature

    Benefit

    Universal input (110 to 240 VAC and 50 to 60 hertz [Hz])

    Flexibility to provision circuits with either high-input voltage (200 to 240V) or low-input voltage (100 to 120V), depending on availability and power output needs

    Energy efficient

    More than 90% efficient to reduce power waste even at low loads (achieved 80 Plus® Platinum Certification;

    Additional Information

    SKU N77-AC-3KW-RF
    Weight (Kg) 1
    Datasheet URL http://www.cisco.com/c/en/us/products/collateral/switches/nexus-7000-series-switches/data_sheet_c78-729141.html
    Condition Refresh
    Module Type Power Supply

    N77-AC-3KW-RF

    AED

    AED 0

    0