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Instruction Manual IM01005016E
Effective December 2018
Supersedes December 2013
Contents
Description
Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Disclaimer of warranties and
limitation of liability . . . . . . . . . . . . . . . . . . . . . . . . 8
CVX050/100 surge protective device
installation and operation
2
Instruction Manual IM01005016E
Effective December 2018
CVX050/100 surge protective device
installation and operation
EATON www.eaton.com
Introduction
This manual describes how to install a CVX050 or CVX100 surge
protective device (SPD) in parallel (shunt) across the electrical supply
of the following types of electrical systems:
• Single-phase
• Split-phase
• Three-phase wye (star)
• Three-phase delta (no neutral)
• Direct current (DC)
The SPD is designed to be installed on service entrance, branch
panels, and/or individual equipment disconnects, and functions
to protect sensitive electronic equipment from damaging voltage
transients . The connecting wires do not carry supply current .
Instead, they carry only short-duration currents that are associated
with a transient event .
These instructions do not cover all details, variations, or
combinations of the equipment, its storage, delivery, installation,
checkout, safe operation, or maintenance . If you require further
information regarding a particular application or installation that is
not covered in this manual, please contact Eaton’s Power Quality
Technical Support at 1-800-809-2772 .
Safety precautions
A licensed/qualified electrician must complete all instructions
described in this manual in accordance with the U .S . National
Electrical CodeT, state and local codes, or other applicable country
codes . All electrical codes supersede these instructions .
WARNING
IMPROPER INSTALLATION CAN CAUSE DEATH, INJURY, AND/OR
EQUIPMENT DAMAGE. FOLLOW ALL WARNINGS AND CAUTIONS.
COMPLETELY READ AND UNDERSTAND THE INFORMATION IN THIS
INSTRUCTION MANUAL BEFORE ATTEMPTING TO INSTALL OR OPERATE
THIS EQUIPMENT.
IMPROPER WIRING COULD CAUSE DEATH, INJURY, AND/OR EQUIPMENT
DAMAGE. ONLY LICENSED/QUALIFIED ELECTRICIANS WHO ARE TRAINED
IN THE INSTALLATION AND SERVICE OF ELECTRICAL DEVICES ARE TO
INSTALL THIS EQUIPMENT.
USE APPROPRIATE SAFETY PRECAUTIONS AND EQUIPMENT FOR ARC
FLASH PROTECTION.
DURING NORMAL OPERATION, HAZARDOUS VOLTAGES ARE PRESENT
INSIDE THE SPD.
WHEN INSTALLING THE SPD, FOLLOW ALL SAFE WORK PRACTICES TO
AVOID ELECTRICAL SHOCK.
CAUTION
DO NOT PERFORM A HIGH-POT TEST WITH THE SPD CONNECTED TO
THE ELECTRICAL SYSTEM. FAILURE TO DISCONNECT THE SPD DURING A
HIGHPOT TEST WILL RESULT IN DAMAGE TO THE SPD.
AFTER INSTALLATION, THIS DEVICE IS NOT REPAIRABLE AND CONTAINS
NO SERVICEABLE PARTS. IF THE UNIT SHOULD MALFUNCTION OR NEEDS
TO BE REPLACED, CONTACT A QUALIFIED ELECTRICIAN OR EATON CARE
AT 877-ETN-CARE (877-386-2273).
Table 1. Catalog numbering system
In this example, Catalog Number CVX050-480Y identifies a CVX
model with the following features and ratings:
• Surge current rating of 50 kA peak per phase
• Three-phase wye wiring configuration
• Voltage range of 220/380 through 277/480 Vac
Installation
Refer to Table 1 and look at the label on the SPD to verify that the
SPD’s voltage rating and wiring configuration matches that of the
electrical system . Use a voltmeter to measure the system’s line
voltage to ensure that the correct model of SPD is being installed .
Damage to the SPD may result if it is connected to an electrical
system of a higher voltage or different wiring configuration .
Mounting
The SPD can be mounted directly to the electrical panel or mounted
to a wall using the enclosure’s internal mounting holes or optional
external mounting feet .
IMPORTANT
CHOOSE A MOUNTING LOCATION FOR THE SPD THAT PROVIDES THE
SHORTEST AND STRAIGHTEST POSSIBLE WIRING (LEAD LENGTH) FROM
THE SPD TO THE ELECTRICAL SYSTEM CONNECTIONS. EXCESSIVE LEAD
LENGTH AND SHARP BENDS WILL DEGRADE SPD PERFORMANCE.
IF THE ELECTRICAL SYSTEM USES AN ISOLATED GROUND, THE SPD MUST
BE ISOLATED FROM GROUND USING INSULATED CONDUIT FITTINGS.
WHEN USING CONDUIT, AVOID USING 90° ELBOWS AND KEEP THE
CONDUIT RUN AS SHORT AND STRAIGHT AS POSSIBLE.
a DC models only available in 50 kA.
CVX 050 - 480Y
Per phase
peak surge
current (kA)
50 = 50
100 = 100 a
Configuration and voltage ranges (Vac)
# of Wires
230L
= Single-phase—200, 208, 220, 230, 240, 277
480L
= Single-phase—480
240S = Split-phase—100/200, 110/220, 120/240,
single-phase 120
240H = Three-phase high leg delta—120/240
208Y = Three-phase wye (star)—100/174, 110/190,
120/208, 127/220
480Y = Three-phase wye (star)—220/380, 230/400,
240/415, 277/480
600Y = Three-phase wye (star)—305/525, 347/600
240D = Three-phase delta—200, 208, 220, 230, 240
480D = Three-phase delta—380, 400, 415, 440, 480
600D = Three-phase delta—525, 600
(600D available in 50 kA only)
048DC = Direct current—48 Vdc a
125DC = Direct current—125 Vdc a
2W
2W
3W
2W
4W+G
4W+G
4W+G
4W+G
3W+G
3W+G
3W+G
3
Instruction Manual IM01005016E
Effective December 2018
CVX050/100 surge protective device
installation and operation
EATON www.eaton.com
Conduit installation
Mount the SPD directly to the electrical panel using a 3/4-inch chase
nipple as shown in Figure 1 .
When mounting the SPD outdoors, use weatherproof conduit and
fittings to maintain the enclosure’s NEMAT 4X rating . See Figure 2 .
a Number and type of wires vary with SPD model. Refer to SPD wiring diagrams.
3/4-inch chase nipple
Internally threaded
conduit fitting
Phase,
ground,
and neutral
wires �
Drill or punch a
7/8-inch hole in wall
of electrical panel
CVX050
SURGE PROTECTIVE DEVICE
SURGE PROTECTIVE DEVICE
SEE WARNING LABEL
DANGER
HIGH VOLTAGE
Suppression Circuit Status
1 LED per phase, normally on - OK
CVX050
Figure 1. 3/4-inch chase nipple mounting
Avoid sharp bends in
conduit and longer
than necessary
wire lengths.
Keep conduit length
as short and straight
as possible.
CVX050
SURGE PROTECTIVE DEVICE
SURGE PROTECTIVE DEVICE
SEE WARNING LABEL
DANGER
HIGH VOLTAGE
Suppression Circuit Status
1 LED per phase, normally on - OK
CVX050
CVX050
SURGE PROTECTIVE DEVICE
SURGE PROTECTIVE DEVICE
SEE WARNING LABEL
DANGER
HIGH VOLTAGE
Suppression Circuit Status
1 LED per phase, normally on - OK
CVX050
Figure 2. Conduit installation
Wall mounting
Mount the SPD directly on a wall using the SPD’s internal mounting
holes as follows:
1. Gain access to the internal mounting holes by first removing
the SPD’s four front cover screws, and then removing the front
cover . See Figure 3 .
2. Place the SPD against the wall and mark the locations of the
four mounting holes .
3. Attach the SPD to the wall using #8 hardware .
4. Reinstall the front cover .
#8 hardware
(4 places)
installer supplied
Cover screws
(4 places)
torque to 6 in-lb
Mounting surface
Mounting holes
under cover (4)
3.39
(86.0)
4.17
(106.0)
Figure 3. Wall mounting using internal mounting holes