Innovative Technology® TVSS Products
XT-40 & IT-RSS
Installation
Contents
Page
1
Introduction............................................................................. 1
1.1 Scope......................................................................... 1
1.2 XT-40 Catalog Numbering System............................ 1
1.3 IT-RSS System Wiring and Maximum Voltages........ 1
1.4 Safety Precautions..................................................... 2
2 Installation............................................................................... 3
2.1 Before Installation...................................................... 3
2.2 XT-40 Wiring Diagrams ............................................. 4
2.3 IT-RSS Wiring Diagram............................................. 5
2.4 Installing Circuit Interrupt Devices............................. 5
2.5 Conduit Installation.................................................... 6
2.6 Mounting the SPD...................................................... 6
2.7 Wiring SPD to Electrical System ............................... 7
2.8 Power Up and System Checkout............................... 8
Instruction Manual:
IM01005012E
Rev. 1 – February 2007
Effective Date 2/2007 For more information visit: www.itvss.com
XT-40 / IT-RSS
IM01005012E XT-40 & IT-RSS Installation
Register Your Warranty On-Line at
http://www.itvss.com/
Notice:
Product improvements and enhancements are continuous; therefore the specifications and information contained in this
document may change without notice.
Eaton Corporation shall not be liable for errors contained herein or for incidental or consequential damages in connection
with the furnishing, performance, or use of this material.
No part of this document may be reproduced for publication, or translated to another language without the prior written
consent of Eaton Corporation.
Innovative Technology® is a registered trademark of Eaton Corporation. All other trademarks, trade names, service marks
and logos referenced herein belong to their respective owners.
Page A Rev. 1 – 2/2007
XT-40 & IT-RSS Installation IM01005012E
X
T
3
Y101
1 INTRODUCTION
1.1 Scope
This installation manual contains the information necessary to install Eaton Corporation’s XT-40 and
IT-RSS Surge Protective Devices (SPDs). System wiring and voltage information for these devices are
provided in Sections 1.2 and 1.3.
If you require further information regarding a particular installation, contact Power Quality Technical
Support at 1-800-809-2772.
1.2 XT-40 Catalog Numbering System
-
-40
Model / Surge Current
XT / 40 kA
In this example, Catalog NumberXT-40-3Y101 identifies
an XT model with the following features and ratings:
• Surge Current Rating of 40 kA
• Three-Phase WYE Configuration
• Voltage Range of 100 to 220Vac
1P101 =Single-Phase — 100, 110, 120, 127
1P201 = Single-Phase — 200, 208, 220, 230, 240, 277
1P400 =Single-Phase— 380, 400, 415, 440, 480
1S101 =Split-Phase — 100/200, 110/220, 120/240
3Y101 =Three-Phase Wye (Star) — 100/174, 110/190,120/208, 127/220
3Y201 =Three-Phase Wye (Star) — 220/380, 230/400,240/415, 277/480
3Y300 =Three-Phase Wye (Star) — 305/525, 347/600
3D101 = Three-Phase High Leg Delta — 120/240
NN201 =Three-Phase Delta — 200, 208, 220, 230, 240
NN400 =Three-Phase Delta — 380, 400, 415, 440, 480
NN501 =Three-Phase Delta — 525, 600
Configuration & Voltage Ranges (Vac)
1.3 IT-RSS System Wiring and Maximum Voltages
Model
Number
System
Wiring
Phase to
Phase
Line to
Ground
IT-RSS Split Phase 288 Vac 144 Vac
Rev. 1 – 2/2007 Page 1
IM01005012E XT-40 & IT-RSS Installation
1.4 Safety Precautions
A licensed/qualified electrician must complete all instructions and measurements described in this
instruction in accordance with the U.S. National Electrical Code, state and local codes, or other applicable
country codes. The U.S. National Electrical Code and state and local requirements (or other applicable
country codes) supersede this instruction. Read and understand all instructions before beginning
installation.
WARNING! The use of the word WARNING in this manual denotes a potential hazard associated
with the use of this equipment. It calls attention to a procedure, practice, or condition, or the like,
which if not correctly performed or adhered to, could result in personal injury or death.
CAUTION The use of the word CAUTION in this manual denotes a potential hazard associated
with the use of this equipment. It calls attention to a procedure, practice, condition, or the like,
which if not correctly performed or adhered to, could result in damage to the equipment.
WARNING! SHOCK HAZARDS:
IMPROPER INSTALLATION CAN CAUSE DEATH, INJURY AND/OR EQUIPMENT DAMAGE.
Follow all warnings and cautions. Completely read and understand the information in this
document 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 service this equipment.
USE APPROPRIATE SAFETY PRECAUTIONS AND EQUIPMENT FOR ARC FLASH
PROTECTION.
Page 2 Rev. 1 – 2/2007
XT-40 & IT-RSS Installation IM01005012E
2 INSTALLATION
2.1 Before Installation
Perform or plan the following before installing the SPD:
1. Locate your electrical system’s applicable wiring diagram in Sections 2.2 & 2.3
2. Verify that your electrical system’s voltage and wiring configuration matches that of the SPD as
shown on its label.
3. De-energize the SPD, and follow safe work practices to avoid an electrical shock hazard.
4. Ensure that a Neutral to Ground/Earth bond is present at the SPD. Note that the SPD may be
damaged if not connected to ground.
5. Measure the voltage between Neutral and Ground. If this voltage is greater than 5 Vac, then a
problem may exist in the electrical system. The SPD can still be installed under this condition, but
a licensed/qualified electrician should be consulted to correct the problem.
6. The SPD can be mounted in any position. If necessary, the cover may be rotated 180 degrees to
improve readability of the label. When removing the cover, be careful not to damage the indicator
light circuit board or wiring attached to the cover.
7. Isolated Ground: The SPD’s ground wire is internally bonded to its housing. If the electrical
system utilizes an isolated ground, then the SPD’s housing must also be isolated from ground
using insulated conduit fittings, and its ground wire must be connected to the system’s isolated
ground bus.
8. Plan to use weatherproof (corrosion resistant) conduit and fittings to maintain the enclosure’s
NEMA 4 (IP66) or 4X rating.
9. Plan to install the SPD as close as possible to the electrical panel. Long lead lengths and sharp
bends between the SPD and the panel will degrade the performance of the SPD.
10. Plan to install 30 A circuit interrupt devices as described in Section 2.4.
Rev. 1 – 2/2007 Page 3
IM01005012E XT-40 & IT-RSS Installation
T
T
T
T
2.2 XT-40 Wiring Diagrams
Single Phase (1P101, 1P201)
PHASE A
Use Interrupt Device if
connected to Phase B
NOT Neutral
NETURAL
or PHASE B
GROUND
XT-40
CIRCUIT
INTERRUPT
DEVICE
3-Phase Wye (Star) (3Y101, 3Y201, 3Y300)
PHASE A
PHASE B
PHASE C
NEUTRAL
CIRCUIT
INTERRUP
DEVICE
Split Phase (1S101)
PHASEA
NEUTRAL
PHASE B
GROUND
Solid bond between
Ground/Earth and
Neutral at service
entrance or serving
isolation transformer
XT-40
CIRCUIT
INTERRUP
DEVICE
3-Phase Delta (No Neut.) (NN201, NN400, NN501)
PHASEA
PHASE B
PHASE C
CIRCUIT
INTERRUP
DEVICE
GROUND
Solid bond between
Ground/Earth and
Neutral at service
entrance or serving
isolation transformer
XT-40
3-Phase Delta (High-Leg) (3D101)
PHASE A
PHASE B (High Leg)
PHASE C
NEUTRAL
GROUND
Solid bond between
Ground/Earth and
Neutral at service
entrance or serving
isolation transformer
XT-40
CIRCUIT
INTERRUP
DEVICE
GROUND
XT-40
Page 4 Rev. 1 – 2/2007
XT-40 & IT-RSS Installation IM01005012E
T
2.3 IT-RSS Wiring Diagram
Split Phase – 288 Vac Phase to Phase Max.
PHASE A
PHASE B
GROUND
IT-RSS
CIRCUIT
INTERRUP
DEVICE
2.4 Installing Circuit Interrupt Devices
The SPD must be connected to the electrical system through a 30 A circuit interrupt device as listed in
Table 2-1. The circuit interrupt device can consist of fuses, individual circuit breakers (single breaker for
each phase), or a multi-pole / single throw breaker.
A pre-existing breaker of rated load size may be utilized if provisions for multi-conductor connections are
made according to U.S. NEC 110-14a (or other applicable country codes). Avoid using a pre-existing
breaker that when operated will cause a critical system shut down.
For XT-40 Single Phase applications (refer to Section 2.2, Single Phase Diagram), note that if the Neutral
wire is used as Phase B, then an additional interrupt device must be used for that phase.
Table 2-1. Wire and Circuit Interrupt Device Requirements
Circuit Interrupt Device Required
Models
Wire Size
for Installation
Max. Current Rating Type
Class RK5 Fuse(s)
XT-40
IT-RSS
#10 AWG
(6 mm
2
)
Stranded Wire
Included
30 Amps
Single-Pole / Single Throw
Breaker for each Phase
Multiple-Pole / Single Throw
or
or
Breaker
Fuse(s) or Breaker(s)
Not Included
Rev. 1 – 2/2007 Page 5
IM01005012E XT-40 & IT-RSS Installation
y
2.5 Conduit Installation
When planning the conduit installation, avoid using 90° elbows and keep the conduit run as short and
straight as possible. See Figure 2-1. When applicable, use weatherproof (corrosion resista nt) conduit and
fittings to maintain the enclosure’s NEMA 4 or 4X rating.
If the system utilizes an isolated ground, then the SPD’s housing must be isolated from ground using
insulated conduit fittings.
Figure 2-1. Conduit Installation Guidelines
Avoid sharp bends in
wiring and longer than
necessar
wire lengths
Keep wire lengths as
short and straight as
possible
2.6 Mounting the SPD
The SPD is to be installed through a panel knockout and via its mounting feet. Place SPD against
mounting surface and mark feet positions. Complete conduit connection installation. Screw box to surface
with appropriate screws. Mounting dimensions and weight are shown in Fig ure 2-2.
Mount the SPD to provide the shortest and straightest possible wire installation from the SPD to the
system bus. Excessive wire length and sharp bends will degrade suppressor performance;
therefore, avoid excessive wire length and sharp bends when all possible.
If installing on a system other than an electrical panel, mount SPD in close proximity to the system being
protected using the necessary means for mounting.
Note: A circuit interrupt device is still required when installing suppressor on a
system other than an electrical panel.
The SPD contains no position-oriented components and can be mounted upside down or sideways.
Cover may be rotated 180 degrees to improve label readability. Take care to support cover to prevent
damage to indicator light circuit board and wiring.
WARNING! Cover will not seal when rotated ONLY 90 degrees. This invalidates NEMA 4 rating
and may create safety hazard.
Page 6 Rev. 1 – 2/2007
XT-40 & IT-RSS Installation IM01005012E
Figure 2-2. XT-40 & IT-RSS Mounting Dimensions
5.58
(141.7)
4.73
(105.9)
4.80
(121.9)
4.17
(120.1)
3.23
(82.0)
0.75 (19.0) Internally
Threaded Conduit Fitting
2.40
(61.0)
Note: Remove cover to
gain access to the
mounting hole shafts.
Weight: 3 lb
Dimensions: Inches (mm)
2.87
(73.0)
0.79
(20.1)
Mounting Holes
Under Lid (4)
Mounting
Hol e S haft s
(63.0)
0.25
(6.4)
2.48
3.15
(80.0)
1.77
(45.0)
3.15
(80.0)
1.38
(35.1)
2.7 Wiring SPD to Electrical System
Important! When connecting the wires from the SPD to the electrical system, cut the
wires as necessary to keep them as short as possible. In addition, to maximize the SPD’s
performance, also twist and bind the wires together to reduce the impedance of the wire.
1. Locate your electrical system’s applicable wiring diagram in Section 2.2 or 2.3. Reference
this wiring diagram as necessary in Steps 2, 3, and 4.
2. Connect the Ground wire (green) from the SPD to the system’s Ground bus bar.
Important! If the system utilizes an isolated ground, then its ground wire must be
connected to the system’s isolated Ground bus.
3. For the XT-40, connect the Neutral wire (white) from the SPD to the system’s Neutral bus
bar (not required for 3-Phase Delta systems – NN201, NN400, and NN501).
4. Connect each Phase wire from the SPD through one of the circuit interrupt devices
installed in Section 2.4 to the system’s corresponding Phase voltage connection.
Tip: To ensure that the front panel phase voltage LEDs glow evenly, be sure that the phase wires
are attached to their associated phase (A to A, B to B, and C to C). The wires or terminals of the
SPD are marked with the intended phase for the electrical system (A, B, or C). Use a phase
rotation meter to identify the electrical system’s phase sequence prior to wiring th e SPD — DO
NOT trust existing markings.
Rev. 1 – 2/2007 Page 7
IM01005012E XT-40 & IT-RSS Installation
2.8 Power Up and System Checkout
Apply system power and observe that the LED(s) on the front of the SPD should glow. One LED should
glow for each Phase voltage being monitored.
Should there be a significant difference in brightness, check the phase rotation of the panel and ensure
that the SPD’s Phase wires are connected to the correct phase. Slight differences in brightness DO NOT
indicate a faulty device, rather specification tolerance differences of the indicator circuit’s components.
LED brightness symmetry and/or level do not indicate the SPD’s operational status.
Page 8 Rev. 1 – 2/2007
XT-40 & IT-RSS Installation IM01005012E
Notes:
Rev. 1 – 2/2007 Page 9
Eaton Corporation
1000 Cherrington Parkway
Moon Township, PA 15108-4312
USA
http://www.itvss.com
© 2007 Eaton Corporation
For additional information please call: All Rights Reserved
Power Quality Technical Support Center Publication No. IM01005012E
1-800-809-2772 Rev. 1 – February 2007
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