Site Wiring Options for Dual AC

Teradata Managed Server for Cabinet and Server Models 4X5, 4X7, and 6X7 Product and Site Preparation Guide

brand
Hardware
prodname
BAR Managed Servers
category
Product Guide
featnum
B035-5319-011K
Dual AC can be implemented at a customer site in one of the following ways:
  • Two separate utility power sources
  • Two separate circuit breaker panels
  • Two site UPSs

Site wiring decisions should be made with an understanding of how the customer will benefit from the dual AC feature.

A site UPS is not required.

Separate Power Sources

Some customers have two separate sources of AC power. For example, a customer’s site may receive power from two different power substations. In this case, blue AC box(es) can be connected to one source, and orange AC box(es) can be connected to the other source. If the source supplying one AC box type fails, the current on the other AC box type will increase, allowing the system to continue operating.

Separate Circuit Breaker Panels

Some customers are concerned about the loss of power to the system during electrical maintenance work on the site. In this case, the system can be wired so blue AC box(es) can be connected to one circuit breaker panel, and orange AC box(es) can be connected to another circuit breaker panel. If the circuit breaker panel supplying one AC box type is accidentally shut off, the current on the other AC box type will increase, allowing the system to continue operating.

Two Site UPSs

Some customers may have two site UPSs. If so, the site can be considered as having two separate power sources.