Lenovo 0U PDUs

Introduction

The Lenovo zero-U (0U) Basic and Switched and Monitored power distribution units (PDUs) are the ideal solutions when you need flexible, reliable, easy-to-deploy power distribution with branch circuit protection to minimize downtime. These rack-dense units distribute power to up to 48 outlets and 42 outlets. 0U PDUs are designed to be installed vertically in the rear channel of a Lenovo rack, thereby not consuming any horizontal rack space that otherwise be used by servers, storage and network switches (hence the term 0U).

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With ever growing power densities in today's rack environments, it is all too easy to add load in the wrong place and trigger an overload event. The 0U Basic and Switched and Monitored PDU offerings can minimize this impact, providing the ability to quickly recover with resettable circuit breakers for each designated bank of receptacles, referred to as load groups. Breakers are color coded to the receptacles in a particular load group to aid in configuration, installation, and maintenance. Furthermore, the Basic PDUs offer a cost-effective option to users who do not require intelligence. The Switched and Monitored PDUs also offer individual outlet remote monitoring and switching (on/off), which allow for remote power sequencing and further helping to prevent unintended PDU overloading.

Introduction to PDUs

A power distribution unit (PDU) is a highly reliable, multiple outlet power strip designed to consolidate line cords within the rack and distribute conditioned power from an uninterruptible power supply (UPS) or utility power to servers and other IT equipment. The PDU efficiently distributes power within the rack and provides fault-tolerant power redundancy for high availability requirements.

Types of 0U PDUs

There are two types of 0U PDUs available from Lenovo. The PDUs covered in this document are:

• Basic PDUs: The simplest and most cost-effective power distribution. Available with various outlet configurations and line cord options to support different systems and load requirements.
• Switched & monitored PDUs: These are advanced power management solutions, providing power monitoring at the outlet level, with increased accuracy at low amperages, for more precise views of power consumption down to the individual server level instead of at the consolidated load group. These PDUs also offer management via a web-based interface which includes individual outlet switching (on/off). Outlet switching allows for remote power sequencing and helps prevent unintended PDU overloading.

Basic PDUs

The Basic PDUs offer a cost-effective option to users who do not require intelligence. Premium hydraulic-magnetic circuit breakers operate reliably in high temperature environments.

Table 1. Ordering part numbers

* See region availability below

Region availability

PDUs indicated in Table 1 as available Internationally except for the following countries:

• Latin America (LAS): Argentina, Colombia, Mexico
• Europe (EMEA): Belarus, Kazakhstan, Kyrgyzstan, Moldova, Morocco, Russian Federation, South Africa, Ukraine and United Arab Emirate
• Asia Pacific (AP): Cambodia, Japan, Korea

Included with the PDUs

The PDUs include the following items:

• One Power Distribution Unit with an attached power cord
• Mounting hardware
• PDU warranty poster
• Safety guidelines
• Quick start guide

Figure 1. Lenovo 0U Basic PDUs

This figure displays two Lenovo 0U Basic PDUs. The top unit (part number 4PU7A93169) is a 36 C13 and 6 C19 outlet configuration. The bottom unit (part number 4PU7A93170) is a 24 C13/C15 and 24 C13/C15/C19 outlet configuration. Both are shown mounted vertically.

Features and specifications basic PDUs

The 0U Basic PDUs have the following common features:

• Advanced features, such as color-coded standard IEC outlets
• Enlogic's standard low-profile design
• Toolless mounting
• Operate reliably in high temperature environments.

Note: Network Management Module is not supported

Table 2. PDU specifications (Basic PDUs)

Switched and Monitored PDUs

The following table provides the ordering part numbers for the 0U Switched and Monitored PDUs.

Table 3. Ordering part numbers and feature codes

* See region availability below
** Available in Canada, Taiwan, Vietnam and United States only
† Planned ship support for these PDUs is 2Q/2024

Region availability

PDUs indicated in Table above as available Internationally, or NA except for the following countries:

• Latin America (LAS): Argentina, Colombia, Mexico
• Europe (EMEA): Belarus, Kazakhstan, Kyrgyzstan, Moldova, Morocco, Russian Federation, South Africa, Ukraine and United Arab Emirates
• Asia Pacific (AP): Cambodia, Japan, Korea

Included with the PDUs

The PDU unit is delivered in a corrugated box and contains:

• One Power Distribution Unit with an attached power cord
• Network Management Controller (NMC is pre-installed)
• Plugs and wires
• Safety information sheet
• Quick start guide
• Warranty card

Figure 2. Lenovo 0U Switched and Monitored PDUs

This figure displays various Lenovo 0U Switched and Monitored PDUs. Each unit shows a different configuration of C13, C15, and C19 outlets, along with circuit breakers. Part numbers and outlet counts are indicated for each.

Features and specifications switched and monitored PDUs

The 0U Switched & Monitored PDUs have the following common and intelligent features like:

• Advanced features, such as color-coded with locking IEC outlets
• Enlogic's standard low-profile design
• Toolless mounting
• Operate reliably in high temperature environments.
• Sleek and space saving unit with low profile circuit breakers
• Color-coded receptacles and different type of power outlets which can be customized according to needs and IT requirements.
• Support Network Management Module and alerting capabilities supporting HTTP, HTTPS, SSH, SNMP, and email.
• Support encryption, passwords, and advanced authorization options including local permissions, LDAP/S, and Active Directory.
• Daisy Chain up to 64 Rack PDUs and supports a maximum of 10 environmental sensors each (sensors are optional)
• Power Sharing feature that allows the data of the PDU to be recorded even during a Power Failure.
• The Switched & Monitored PDUs also provide both current options with unique features:
  • Single-Phase Models: All Single-Phase models support hydraulic magnetic breakers that are colour coded to the corresponding outlets.
  • Three-Phase Models: In standard 415 V Three-Phase (Wye) configurations, the colour of each circuit breaker and outlet correspond to the appropriate input phase. The PDU is labelled to indicate the input-phase associated with each circuit breaker and outlets. In North America 208 V Three-phase (delta) configurations, the colour of the circuit breaker corresponds to the line connections and includes a label of the two connected input-phases.

Table 4. PDU specifications (Switched & Monitored PDUs)

† Planned ship support for these PDUs is 2Q/2024
* USA, Canada (single-phase)
** USA, Canada, and Japan (dual-phase).

Connectors and load groups

The 0U Basic PDU with 36x C13 and 6x C19 connectors (part number 4PU7A93169) have the components as shown in the following figure.

Figure 3. Connectors for Basic PDU (part number 4PU7A93169)

This figure illustrates the components of a Basic PDU. It shows the input power cord, outlets/receptacles, and a hydraulic magnetic circuit breaker, along with color-coded circuit breakers and outlets.

The 0U Switched and Monitored PDUs with 18x C13/C15 and 18x C13/C15/C19 connectors (part number 4PU7A93175) have the components and controls as shown in the following figure.

Figure 4. Connectors for Switched and Monitored PDU (part number 4PU7A93175)

This figure depicts the components and controls of a Switched and Monitored PDU. It shows the input power cord, outlets/receptacles, color-coded circuit breakers and outlets, and a swappable Network Management Controller (NMC) module.

Advanced Network Management

The Switched and Monitored PDUs include a hot-swappable Network Management Controller (NMC) that provides the interface and connectors to manage the PDU.

Features:

• Network Connectivity: Dual ports: 1x Gigabit Ethernet (10/100/1000 Mbps) and 1x (10/100 Mbps) connection/IP address
• Ethernet Cascading: Up to 64 units share a single "daisy-chain" Ethernet connection/IP address
• DC Power Sharing: Each PDU can provide DC power sufficient to power network management electronics and sensors in a neighboring PDU in the event of AC power source loss
• Dual Ethernet Support: Dual Ethernet ports for redundant communication
• Remote Connectivity: HTTP(s), iPV4 and iPV6, SSH, Virtual Serial, SNMP (v1, v2c, v3), JSON-RPC, LDAP(S), FTP/SFTP, RADIUS, Redfish DMTF RESTful API
• WebUI Interface: Data efficient REACT framework with native mobile device support

Figure 5. Interface of the Network Management Controller

This figure shows the LED screen and the ports of the NMC. The LED interface provides information about the load status, events, measurements, identification, and settings. It features an LED screen displaying AMPS, CB BANK, and load levels (L1, L2, L3), an OLED screen for Setup, Alarms, Power, and Sensors, USB-C and Ethernet interface ports, and a reset button. Navigation buttons (Menu, Select, Scroll) are also visible.

The components of the NMC are as follows:

• LED screen:
  • Graphical alarm icon PDU Alarm
  • Daisy Chain Indicator
  • Environmental Sensor Alarm
  • Security Sensor Alarm
  • Circuit Breaker & outlet Alarm
  • Source color coding - user selected option

Figure 6. LED screen source color coding samples

This figure displays examples of the LED screen with different "Source Color Coding" applied to the outlets and circuit breakers, showing various numerical values and load indicators.

• OLED Screen:
  • Setup
  • Alarms
  • Power
  • Sensors
• Reset button: Use this button to reset the PDU for communication purposes only. Resetting the PDU does not affect the outlets/loads.

Interface Ports

The NMC provides various interface ports:

• USB-C port: Use the USB connection to upgrade firmware and configuration file download/upload.
• Ethernet ports: Use for redundancy and cascading (daisy chain)
  • 1x Gigabit Ethernet (10/100/1000 Mbps)
  • 1x (10/100 Mbps)
• Serial ports:
  • Digital Sensor port 1: dual function - sensor or serial connectivity. Use this port to open a serial connection to the PDU from your laptop.
  • Digital Sensor port 2: sensor connectivity
  • Supports up to 10 physical sensors (optional sensors such as: door open/close, fluid spot leak detector, humidity, temperature available thru Enlogic vendor)

Daisy chain port

Use ports to daisy chain two PDUs together. This setup enables multiple PDUs to connect over one Ethernet port. In daisy chain mode, up to 64 PDUs can be connected via one (1) IP address. This allows users to gather information and data of all daisy chained PDUs from the master PDU.

Figure 7. Daisy-chain PDU setup

This figure illustrates a daisy-chain PDU setup. It shows multiple PDUs connected via Ethernet ports, with a master PDU managing the chain.

RNA (Redundant Network Access) Functionality

Enlogic RNA allows to secure the access of PDU data and statistics on two separate private networks. RNA is used with a redundant power delivery design including two rack PDUs for each IT rack. PDUs are used in RNA applications that must be of the same SKU.

Figure 8. RNA setup with LAN

This figure shows a sample RNA setup with a Master PDU and a Slave PDU connected to Server A, demonstrating redundant network connectivity.

Browser interface

The PDU provides a graphical user interface that you can view from a web browser. Using a web browser, you can access and monitor the PDU power outlets and output devices remotely from a computer.

The following tasks can be performed though browser interface:

• Controls individual outlets (On/Off)
• Displays PDU current, watts, output power in VA, power factor, and frequency
• Displays outlet level voltage, power factor and cumulative KW hour output
• Sets outlet alarm thresholds
• Views temperature and humidity status where the PDU is located and set thresholds to trigger alarm notifications
• Views dry, humidity and temperature status
• Accesses a graphical historical view of PDU data for statistical trend analysis
• Views PDU Alarms
• Views Event/System Logs

Selecting the right PDU

To avoid over sizing or under sizing power, it is important to understand the power requirements of the hardware that will be powered by the PDU(s). A useful tool to leverage to help calculate overall power usage is the Lenovo Capacity Planner (LCP) https://datacentersupport.lenovo.com/us/en/solutions/lnvo-lcp.

Likewise, to avoid over sizing it is also important to understand the PDU capabilities and capacities.

Consider the following for capabilities:

• Do you require monitoring and/or outlet switching? If so, then consider the switched and monitored PDUs described here. If not, consider the Basic PDUs described above as well.
• Do you require environmental monitoring capabilities? If so, then consider the switched and monitored PDUs described here. If not, consider the Basic PDUs described above as well.
• Does the PDU have the right type of power for your scenario? For example, 16A, 30A, 32A, 63A and single or three phase power?
• Does the PDU have enough of the correct type of outlets for your scenario?

Consider the following for capacities:

• Will each outlet be able to support the load being connected to it? For example, C13 outlets have a 10A limit.
• Will each load group be able to support the hardware being connected to it?
• Will each phase, where applicable, be able to support the hardware being connected to it?
• Is the overall power capacity of the PDU able to support the hardware being connected to it?
• Do you have enough PDUs to be N+N or N+1 redundancy if this is required?

For additional information on selecting the right PDU, load groups, phases, outlets, line cords, plugs and specifications, reference tables above and/or vendor's nVent (CIS) site.

Supported rack cabinets

The 0U Switched and Monitored PDUs can be installed in the following racks:

• S2 42U Standard Rack cabinet (Types 9307)
• 42U 1200mm Deep Dynamic Rack (Type 9360)
• 42U 1200mm Deep Static Rack (Type 9361)
• 42U 1100mm Enterprise V2 Dynamic Rack (Type 9363)
• The 42U or 48U Heavy Duty Rack Cabinet (machine types 7D6D or 7D6E) are supported.

Enlogic PDUs are built with tool-less mounting in most rack enclosure designs.

These PDUs are designed to be mounted without the use of tools. Mounting buttons are pre-installed on the rear of the PDU at the factory. The mounting buttons allow for three mounting methods for installing the 0U Switched and Monitored PDUs vertically in a rack.

• Using factory-installed buttons on the PDU to mount the PDU in keyhole openings in the rack frame

For additional information on racking the 0U basic or Switched and Monitored PDUs, refer to User's Guide for the PDUs.

Warranty

The Lenovo zero-U (0U) Basic and Switched and Monitored power distribution units (PDUs) are offered with a three-year limited warranty. At Lenovo discretion this warranty will be either CRU service (customer replaceable unit) or a Lenovo employee, subcontractor or reseller will be assigned to repair the failing item. Proof and date of purchase is required for warranty claims.

Agency approvals

The PDUs conform to the following standards:

• CE, Demko Certified to IEC/EN60950-1
• ROHS, REACH

Related publications and links

For more information, see the following documents:

• Enlogic user manual basic PDUs: https://enlogic.com/product/EB0337
• Enlogic user manual switched and monitored PDUs: https://enlogic.com/product/EN6381
• Lenovo Capacity Planner (LCP): https://datacentersupport.lenovo.com/us/en/solutions/lnvo-lcp

Related product families

Product families related to this document are the following:

• Power Distribution Units

Notices

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This document, LP1884, was created or updated on April 24, 2024.

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