Hole Barrel Lug Terminations To Bus Bar Installation; External Power Wiring Installation; Figure 4-3. Typical Bus Bar Barrel Lug Mounting - Hardware Assembly Sequence - Eaton Power Xpert Plus 1 Installation And Operation Manual

UPS SYSTEM INSTALLATION
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4-6
Power Xpert 9395 UPS (450–550 kVA) Installation and Operation Manual
Use the procedures in the following paragraphs to connect the external and battery
power wiring.
4.6.1 2‐Hole Barrel Lug Terminations to Bus Bar Installation
Paragraphs 4.6.2 and 4.6.3 require connecting input, output, and battery power wiring
using 2-hole barrel lugs. See Figure 4‐3 for the hardware sequence when installing the
lugs to the bus bars. Tighten the nut to the torque value listed in Table 3‐8.
NOTE Conical washers are special purpose washers that look similar to flat washers, except for a slight
conical shape. When installing conical washers, the top of the dome should be next to the nut and the base of
the washer should be against a flat surface such as a bus bar, flat washer, or large terminal.
Figure 4‐3. Typical Bus Bar Barrel Lug Mounting – Hardware Assembly Sequence
4.6.2

External Power Wiring Installation

To install wiring to connections:
1. Remove one top screw and two bottom screws securing the UPS left front panel
(see Figure 4‐2 on page 4-4). Lift the panel straight up to remove it from the
panel hanger bracket at the top of the cabinet.
2. Remove the screws securing the internal safety shield panel and remove the
panel to gain access to the input, output, and battery terminals. Retain the
hardware for later use.
Single Lug Installation
Double Lug Installation
S
164201701 Rev 3 www.eaton.com/powerquality
Hex Nut
Conical Washer
Flat Washer
Lug
Bus Bar
Flat Washer
Bolt Head
Hex Nut
Conical Washer
Flat Washer
Lug
Bus Bar
Lug
Flat Washer
Bolt Head