Table of Contents
Advertisement
PDU load groups
The PDU load groups are described in the following tables.
Table 1. Switched and monitored 1U C19 PDU load groups
Circuit breaker number
1
2
3
4
5
6
7
8
9
Table 2. Switched and monitored 1U C13 PDU load groups
Circuit breaker number
1
2
3
4
5
6
Load balancing
The internal circuits of some PDUs might be overloaded if you are not aware of the circuit breaker
specifications and how the PDU outlets are connected. If loads are greater than the specification of the
circuit breaker, it will trip and turn off the load.
There are either six or nine circuit breakers on the front of the PDU, depending on the model. Each circuit
breaker is rated for 20 amps. When you connect loads, make sure that the rating for each circuit breaker is
not exceeded.
Some PDUs can be connected to three-phase power. The loads should be distributed across all three
phases. If single-phase power is used, it also is important to distribute the load between the outlet groups.
The PDU models with 12 C13 outlets on the front have phase one connected to the first 4 outlets, outlet
group one. Phase two is connected to the next 4 outlets, outlet group two and phase three are connected to
the last 4 outlets, outlet group three (see the following illustration).
Associated front outlet
1
2
3
4
5
6
7
8
9
Associated outlets (The load
segment number that is visible on
the front of the PDU is in
parentheses.)
1 and 2 (1)
3 and 4 (2)
5 and 6 (3)
7 and 8 (4)
9 and 10 (5)
11 and 12 (6)
Associated rear outlet
10
11
12
Phase (when using 3-phase input
power)
1
2
3
Phase (when using 3-
phase input power)
1
2
3
.
Chapter 1
Introduction
7
Hide quick links:
Advertisement
Table of Contents
