APC 480 Installation/Maintenance, Maintenance performed while the PDU is receiving input power

Warnings

Installation/Maintenance

Only a certified electrician can perform these tasks:

•Connect the Power Distribution Unit (PDU) to utility power

•Install an upstream circuit breaker

•Route and connect the power cables for under-floor wiring

•Connect a switch to the Emergency Power Off (EPO) interface on the PDU

Only a certified electrician or an APC Field Service Engineer can perform these tasks:

•Connect the PDU to the Symmetra PX UPS

•Perform maintenance of the PDU

Install a circuit breaker to protect the PDU against over-current when you connect the PDU to utility power.

See “Specifications” on page 41 to determine the type of circuit breaker to install.

Maintenance performed while the PDU is receiving input power

APC does not recommend that you perform maintenance of the PDU while it is receiving input power. However, due to the critical nature of data center loads, this may occur. If you must perform maintenance while the PDU is receiving input power, observe the following precautions to reduce the risk of electric shock:

1.Never work alone.

2.Perform the maintenance only if you are a certified electrician who is trained in the hazards of live electrical installation.

3.Know the procedure for disconnecting electricity to the PDU and the data center in case of an emergency.

4.Wear appropriate personal protective equipment.

5.Use double-insulated tools.

6.Always follow local and site regulations when working on the PDU.

2 InfraStruXure System - Installation and Start-Up