Advanced Protection XRL User Manual [en, es]

ENGLISH

TEXA, TEXB,
TEXR, TEXW

Series

Surge Protective Device (SPD)

Installation, Operation

& Maintenance Manual

WARNING – IMPORTANT – PLEASE READ – WARNING

Safety First – Hazardous Voltage & Shock Hazard

• Only qualied licensed electricians should install or service SPDs

• Hazardous voltages exist within SPDs

• SPDs should never be installed or serviced when energized

• Use appropriate safety precautions including Personal Protection Equipment

• Failure to follow these instructions can result in death, serious injury, and/or equipment damage

• This manual shall be read in its entirety prior to installing

V

Bonding and Grounding Hazard

Verify that the neutral conductor in the service entrance
equipment is bonded to ground in accordance with the
National Electric Code (NEC®) and all applicable codes.

Verify that the neutral terminal (XO) on the secondary side of
distribution transformers are grounded to the system ground in
accordance with the NEC® and all applicable codes.

During installation into an electrical system the SPD must
not be energized until the electrical system is completely
installed, inspected and tested. All conductors must be
connected and functional including the neutral (if required).

The voltage rating of the SPD and system must be veried

before energizing the SPD.

Failure to follow these guidelines can lead to abnormally high
voltages at the SPD. This may cause the SPD to fail. The
warranty is voided if the SPD is incorrectly installed and/or if

the neutral conductor in the service entrance equipment or
downstream of separately derived systems is not bonded to
ground in accordance with the NEC®.

Do Not Hi-Pot Test SPDs

Any factory or on-site testing of power distribution
equipment that exceeds normal operating voltage such as
high-potential insulation testing, or any other tests where the
suppression components will be subjected to higher voltage
than their rated Maximum Continuous Operating Voltage
(MCOV) must be conducted with the SPD disconnected
from the power source. For 4-wire systems, the neutral
connection at the SPD must also be disconnected prior to
performing high-potential testing and then reconnected after
test completion.

Failure to disconnect SPD and associated components
during elevated voltage testing will damage the SPD and
will void the warranty.

Advanced Protection Technologies

14550 58th Street North

[phone]·[phone] · Fax [phone]

UL is a registered trademark of Underwriters Laboratories, NEC® and National Electrical Code are
registered trademarks of National Fire Protection Association, C62.41.1-2002, C62.41.2-2002,
C62.45-2002, C62.72-2007 are registered trademarks of IEEE.

www.aptsurge.com · [e-mail]

Clearwater, Florida 33760

·

European Authorized Representative

Obelis s.a.

Boulevard Général Wahis 53

1030 Brussels, BELGIUM

Tel: +(32) 2. 732.59.54
Fax: +(32) 2. 732.60.03
E-Mail: [e-mail]

01.24.13.lh #8169

INTRODUCTION

Thank you for choosing an APT Surge Protective Device
(SPD). This is a high quality, high energy surge suppressor
designed to protect sensitive equipment from damaging
transient overvoltages.

Proper installation is important to maximize performance.
Please follow steps outlined herein.

This entire Operation & Maintenance Manual should be
read prior to beginning installation. These instructions are
not intended to replace national or local codes. Follow
all applicable electrical codes to ensure compliance.
Installation of this SPD should only be performed by

qualied electrical personnel.

APT SPDs are extensively tested in accordance with
industry standards such as ANSI/IEEE C62.41.1, C62.41.2,
C62.45, C62.62, C62.72, UL 1449, UL 1283, IEC 61643, etc.

This SPD is a single-port parallel-connected device
intended for service entrance, panelboard or downstream
installation for IEEE Category C, B or A applications.

Major Industry Nomenclature Changes
Effective 2008-2009

Be aware that UL 1449 Third Edition and 2008 NEC® Article
285 generated substantial changes.

▪ The term TVSS changed to SPD
▪ Types 1, 2, 3 & 4 SPDs are created
▪ UL 1449 clamping voltage performance testing

changed from 500A to 3,000A

▪ UL 1449 added new I nominal testing (I

consists of more rigorous duty-cycle testing

Figure 1

(also coincides with ANSI/IEEE C62.41.2 - 2002 Categories C, B & A)

This SPD complies with the latest regulatory actions and
is UL Listed as such.

For further information, please review latest editions of
NEC® Article 285, UL 1449 or contact APT Tech Support
at [phone].

GENERAL INFORMATION

Product Family Outline

XA – Single Module in enclosure
XB – Two Modules in enclosure
XR – Single small module for integration by OEM
XW – Single large module for integration by OEM

2

NEC® Article 285 & UL 1449-3

SPD Types: Types 1, 2, 3, & 4

Based on Location within electrical distribution system

), which

n

Each is available with an ‘S’ or ‘L’ sufx, which designate

Standard modes (most common) or discrete 10-modes

(specic application) respectively. For example, XAS is SPD

in enclosure with Standard modes of protection; XRL is SPD
without enclosure to go inside host gear having discrete ten
mode protection.

XR & XW versions without enclosures are available for
internal mounting within electrical gear. The XR version is
rated 100-300kA. The XW version is rated 300-500kA. Both
are available with S or L designations.

The XA & XB families are intended for use as a Type 1 external
mount SPD. XR and XW families are Type 4 SPDs intended for
Type 1 applications. See Model Number Decoder in Table 1.

Type 1 SPD

Type 1 SPDs include internal overcurrent protection and
have been evaluated by UL to more stringent requirements.
Type 1 SPDs are suitable for installation on the line side
or load side of the service disconnect overcurrent device.
Type 1 SPDs may be used in Type 2 applications.

Internal Protection

This device features internal overcurrent and
overtemperature protection that will disconnect effected
surge suppression components at the end of their useful
life, but will maintain power to the load – now unprotected. If
this situation is undesirable for the application, follow these
instructions for servicing or replacing the device.

Service Guidelines

Service of this unit consists of replacing the internal module(s),
disconnect switch (if equipped) and/or display assembly.

There are no user-serviceable parts inside the replaceable
module. Do not attempt to disassemble the module as it
stores charge.

Simplied Explanation of Operation

SPDs sense overvoltage and create a momentary short
circuit to redirect harmful surge energy. SPDs reset
automatically and wait for the next surge. This is similar to
the pressure relief valve on a water heater: pressure goes
up, valve opens to relieve pressure and then resets. In
an electrical system, an SPD senses overvoltage, shorts
temporarily, which equalizes damaging voltages and
then resets. SPDs are capable of repeating this function
thousands of times.

Parallel Connection

This is a Parallel connected SPD – not series connected.
As outlined above, an SPD ‘drains off’ excessive voltage
from an electrical system. Because of parallel connection,
installation of the SPD anywhere near the equipment to be

protected is satisfactory. This effect is similar to ushing

any toilet in a house; pressure in the shower goes down.
In an electrical system, a parallel connected SPD will
remove excessive voltage off the entire system (assuming
reasonable proximity).

Tip: It is very important that wiring leads be congured as short

& straight as possible. Avoid long leads. Avoid sharp bends.
Route SPD conductors in the same conduit. Leads do not have
to be sized for the entire load – this SPD is parallel connected,

not series connected. As a generalization, 6 AWG works ne.

Do not create model numbers from this chart as all features are not available on all models

TABLE 1: MODEL NUMBER DECODER

Transient Eliminator

Voltage Code for Electrical System Model Family Options

Common North American Systems:
01 = 240/120V Split Phase - 1Ø, 3W+Grnd, (Fig 1)
02 = 208Y/120V Wye - 3Ø 4W+Grnd, (Fig 2)
03 = 240/120V High Leg Delta (B High), (Fig 3)
04 = 480Y/277V Wye - 3Ø 4W+Grnd, (Fig 2)
05 = 480V Delta - 3Ø 3W+Grnd, (Fig4) & HRG Wye
08 = 600Y/347V Wye - 3Ø 4W+Grnd, (Fig2)

Other Available Systems - Conrmation encouraged:

15 = 254/127V Split Phase - 1Ø 3W+Grnd, (Fig 1)
18 = 480/240V Split Phase, or Two legs of Wye, (Call)
21 = 220Y/127V Wye - 3Ø 4W+Grnd (Fig 2)
41 = 520Y/300V Wye - 3Ø 4W+Grnd (Fig 2)
42 = 415Y/240V Wye - 3Ø 4W+Grnd (Fig 2)
43 = 400Y/230V Wye - 3Ø 4W+Grnd (Fig 2)
44 = 440Y/250V Wye - 3Ø 4W+Grnd (Fig 2)
51 = 480V B Corner Grnd Delta, 3Ø 3W+Grnd (Fig 6)
06 = 240V Delta - 3Ø 3W+Grnd (Fig 4)
61 = 240V B Corner Grnd Delta, 3Ø 3W+Grnd (Fig 6)
07 = 380Y/220V Wye - 3Ø 4W+Grnd (Fig 2)
09 = 600V Delta - 3Ø 3W+Grnd (Fig 4) & HRG Wye

(Available: 100kA, 150kA, 200kA, 250kA)

91 = 600V B Corner Grnd Delta, 3Ø 3W+Grnd (Fig 6)

(Available: 100kA, 150kA, 200kA, 250kA)
11 = 120V Single Phase (Fig 5)
12 = 240V Single Phase (Fig 5) - Not split phase
13 = 127V Single Phase (Fig 5)
14 = 300V Single Phase (Fig 5)
16 = 277V Single Phase (Fig 5)
17 = 480V Single Phase (1 Hot, 1 Neu, 1 Grnd) (Fig 5)

TE 02 XAS 20 E1 XD

XAS = External Mount SPD

Standard Modes

XAL = External Mount SPD

10 Mode

XBS = External Mount SPD

Two Modules
Standard mode

XBL = External Mount SPD

Two Modules

10 Mode
For Internal Mount
(No Enclosures):

XRS = Component SPD,

UL Recognized

Standard Modes
XRL = Component SPD,

UL Recognized

10 Modes
XWS = Component SPD,

UL Recognized

Standard Modes

XWL = Component SPD,

UL Recognized

10 Modes

Surge Current Rating

10 = 100kA/Phase
15 = 150kA/Phase
20 = 200kA/Phase
25 = 250kA/Phase
30 = 300kA/Phase
31 = 300kA/Phase
40 = 400kA/Phase
45 = 450kA/Phase
50 = 500kA/Phase
60 = 600kA/Phase
80 = 800kA/Phase
90 = 900kA/Phase
1K = 1000kA/Phase

X = Surge Counter, six-digit LCD counter

includes maintenance-free Eprom memory
backup

Z = Surge Counter, plus External Surge

Counter Signal

E = Remote Locatable Display on 6 ft Cable

custom cable lengths available
M = Mount Display on SPD instead of cable
F = Noise Filtering - Extended Range &

Attenuation
D = Rotary Disconnect Switch

Bussman, UL98
T = Thru-door Rotary Disconnect Switch

Bussman, UL 98, NEMA 1/12/3R only
K = Rotary Disconnect Switch

Katco, UL 508
S = Thru-door Rotary Disconnect Switch

Katco, UL 508, NEMA 1/12/4 only

Delete Options
L = Delete L-N Protection (reduces kA rating)
G = Delete L-G Protection (reduces kA rating)
N = Delete N-G Protection (reduces kA rating)
J = Delete Noise Filter

Enclosure Rating

E1 = NEMA 1/12/3R/4
4X = NEMA 4X Non-Metallic
4S = NEMA 4X Stainless Steel
FM = NEMA 1 Flush Mount
P1 = NEMA 1 pullbox ‘indoor'

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Phase A (BLK)

Phase B (BLK)

B

A

Neutral (WHT)

N

V

}

Phase C (BLK)

C

Ground (GRN)

WYE
3 Hots, 1 Neu, 1 Grnd

TYPICAL PARALLEL

ELECTRICAL PANEL

BC

Advanced Protection Technologies

Phase A

Surge Counter

Phase B

Phase C

Service

GN

Silence

TestCountReset

Figure 2

To
Protected
Loads

Hot (BLK)

V

}

Neutral (WHT)

}

V

Hot (BLK)

Ground (GRN)

SPLIT
2 Hots, 1 Neu, 1 Grnd

CONNECTED SPD ON

A

BREAKER

Phase A (BLK)

Phase B (ORNG)

V

}

Phase C (BLK)

Neutral (WHT)
Ground (GRN)

HI-LEG DELTA (B High)
3 Hots, (B HIGH),
1 Neu, 1 Grnd

Phase A (BLK)

V

}

Phase B (BLK)

Phase C (BLK)

Ground (GRN)

DELTA & HRG WYE
3 Hots, 1 Grnd

V

}

SINGLE POLE
1 Hot, 1 Neu, 1 Grnd

Precautionary Statement Regarding SPDs on Ungrounded Systems

Caution – Ungrounded systems are inherently unstable and can produce
excessively high line-to-ground voltages during certain fault conditions. During
these fault conditions, any electrical equipment including an SPD, may be
subjected to voltages which exceed their designed ratings. This information
is being provided to the user so that an informed decision can be made
before installing any electrical equipment on an ungrounded power system.

Cascade Surge Protection

For optimum surge protection, cascade or staged surge suppression should
be implemented at the service entrance and downstream locations as
appropriate. Known or expected surge sources, as well as sensitive loads,
should also have localized surge suppression. For interconnected electronic
loads (data cabling), SPDs should also be utilized to protect the devices on
either end of the interconnecting data cables.

Hot (BLK)

Neutral (WHT)

Ground (GRN)

Phase A (BLK)

V

}

Phase C (BLK)

Ground (GRN)

CORNER GROUND
DELTA (B grounded)
2 Hots, 1 Grnd

3

Unpacking & Preliminary Inspection

Inspect the entire shipping container for damage or signs
of mishandling. Remove the packing materials and further
inspect the unit for any obvious shipping damages.

If any damage was found and is a result of shipping

or handling, immediately le a claim with the shipping

company and forward a copy to APT.

Storage Environment

This SPD should be stored in a clean, dry environment.
Storage temperature range is -40°C (-40°F) to +60°C
(+140°F). Avoid exposure to high condensation.

PRE-INSTALLATION & INSTALLATION PLANNING

Operating Environment

The standard unit uses a Type 1/12/3R/4 enclosure.
Non-metallic polycarbonate 4X, stainless steel and Type

1 ush-mount or pull box enclosures are available as

options. Before installing, ensure that your enclosure type
and application are appropriate per NEMA 250 with regard

to moisture, dirt, excessive dust, ammable materials or

atmospheres, corrosive vapors, etc. Please consult factory
if enclosure needs to be changed.

This SPD is designed in an ambient temperature range
of -40°C (-40°F) to +60°C (+140°F) with a relative
humidity of 0% to 95% (non-condensing). Excessive
temperature may inadvertently operate internal thermal
overtemperature protectors.

On rare occasions in high temperature climates, SPDs
inside clear cover polycabonate enclosures have
experienced internal temperatures exceeding 200°F
(94°C). We recommend positioning the unit so that the
clear front avoids direct summer sunlight by shading or
not facing west.

Line Side versus Load Side Installation

The XA & XB family SPDs are tested and qualied as

Type 1 SPDs per UL 1449 Third Edition and 2008 NEC®.
This SPD can be installed on the Line Side of the service
overcurrent device per 2008 NEC® Article 285. Type 1
SPDs may also be installed in Type 2 applications. As
a generalization, it is more practical to install as Type 2
on load side of main overcurrent device for maintenance
reasons. Such installations would be similar to traditional
TVSS installations. (Note: cUL models are Type 2 due to
different cUL criteria.)

XR and XW SPD modules are Type 4 components that
have been evaluated by UL for use in Type 1 applications.
(XR’s and XW’s are essentially XA’s without enclosures for
installation within host electrical equipment.)

There may be circumstances where Line Side installation
is desirable. Follow all applicable Code requirements for
Line Side installation. We generally recommend that the
SPD be installed with a disconnecting mechanism for
servicing purposes.

Tip: APT offers an optional Disconnect Switch that has been
UL evaluated as part of the SPD. This includes SCCR and
Line Side suitability. If you do not use the APT Disconnect
option, select a disconnect switch rated for line side (UL

98) having appropriate SCCR rating including any required

overcurrent protection. This may be more time consuming
and expensive than anticipated. The optional Disconnect
Switch is fully engineered and almost certainly easier, smaller
and less expensive. Please contact APT Technical Support
as appropriate.

Audible Noise

SPD background noise is negligible or non-existent, and
does not restrict the location of installation.

Mounting, Dimensions, and Weight

The XA & XB series include enclosures and are intended for
wall mounting. The XR & XW series are component SPDs
intended for installation within other electrical gear already
having enclosures. See Table 2. Mechanical drawings are
included in back of this manual (page 12).

TABLE 2: DIMENSIONS & WEIGHTS

XA H/W/D (in. / mm.) Weight

Standard (and w/
Opt. Disc. Switch

& <300kA)

With Opt. Disc.

Switch & >300kA

4X Non-Metallic

(std.)

(>300kA w/disc.)

4X Stainless

(>300kA w/disc.)

Pullbox & Flush

mount

(>300kA w/disc.)

12"x12"x6.5"

(305x305x165)

16"x14"x6.5"

(406x356x165)

14"x12"x7" (356x305x178)
16"x14"x7" (406x356x178)

12"x12"x7.5"

(305x305x191)

16"x14"x7.5"

(406x356x191)

12"x12"x6" (305x305x152)
16"x14"x6" (406x356x152)

23 lbs

(10.4 kg)

32 lbs

(14.5 kg)

14 lbs (6.4)
21 lbs (9.5)

24 lbs (10.9)

33 lbs (15)

21 lbs (9.5)

29 lbs (13.2)

XB H/W/D (in. / mm.) Weight

Standard

(includes Disc.

Switch)

4X Non-Metallic

4X Stainless

Pullbox & Flush

mount

20" x 20" x 7.5"

(508 x 508 x 191)

24" x 24" x 8"

(610 x 610 x 203)

20" x 20" x 7.5"

(508 x 508 x 191)

20" x 20" x 6"

(508 x 508 x 152)

52 lbs

(23.6 kg)

52 lbs

(23.6 kg)

53 lbs

(24 kg)

43 lbs

(19.5 kg)

XR H/W/D (in. / mm.) Weight

Standard

With Opt. Disc.

Switch on alum.

backplane

6.5" x 11" x 4.5"

(165 x 279 x 114)

10.75" x 10.88" 4.5"
(273 x 276 x 114)

5 lbs

(2.3 kg)

9 lbs

(4.1 kg)

XW H/W/D (in. / mm.) Weight

Standard

With Opt. Disc.

Switch on alum.

backplane

9" X 11" X 4.5"

(229 x 279 x 114)

14.75" X 12.9" X 5.25"
(375 x 328 x 133)

Service Clearance

Service clearance is needed at the front of the unit; 36
inches minimum is the required distance for clearance
pursuant to the NEC®.

Lead Lengths & Maximizing SPD Performance
SPDs must be located as close to the circuit as possible
to minimize parasitic losses. Surges are high current, high
frequency events that cause substantial voltage drops
across conductors. This hurts SPD performance. Use the
shortest & straightest possible leads. Pre-Plan installations

7 lbs

(3.2 kg)

11 lbs
(5 kg)

4

and ensure that nearest breaker positions are used. If new
construction, adjust breaker locations as appropriate.

Tip: Voltage drops for normal 120V or 277V lines might be 2-3V
per hundred feet. In surge applications, voltage drops might
be 100-150V per foot. These voltage drops add to clamping
voltage, thus hurting performance. Make every effort to keep
leads short and straight.

As distribution gear becomes larger, shorter leads are more

difcult to accomplish. When longer leads are unavoidable,

gently twist leads together (one to two twists per foot), or
tie-wrap leads together.

Tip: surges create magnetic elds per the ‘right-hand rule’.
When current goes in direction of thumb, magnetic eld is
in direction of curl of ngers. As surge current goes to SPD,
elds are created in one direction. When the SPD sends those

currents to neutral and/or ground, current goes in the opposite
direction. If ‘coming & going’ are on the same axis, the magnetic

elds can be cancelled, thus avoiding performance decrease.

Gentle twists, bundling & tie-wraps accomplish this.

Shortest Leads Possible

▪ Leads must be as short and straight as possible -

See NEC® Art. 285.12

▪ Pretend wire is $1000 per foot coming out of your pocket.
▪ No long leads
▪ No sharp bends
▪ No wire nuts
▪ How short is short enough? As short as you can make it.
▪ How long is too long? If anyone else can make it shorter.

Overcurrent Protection

SPDs draw very little current under normal conditions and
conduct for a brief duration upon encountering a transient
surge current. This SPD contains internal overcurrent and
overtemperature protection to protect against abnormal
voltage conditions.

Supplemental overcurrent protection is not required to protect
this SPD. However, connecting conductors require protection
in Type 2 or 4 applications. Follow applicable codes.

Voltage Rating

Before installing SPD, verify that it has the same voltage
rating as the power distribution system. Compare the SPDs
nameplate voltage or model number and ensure that SPD

conguration matches the intended power source. See Table 1.

The specier or the user of the device should be familiar with
the conguration and arrangement of the power distribution

system in which any SPD is to be installed. The system

conguration of any power distribution system is based strictly

on how the secondary windings of the transformer supplying

the service entrance main or load are congured. This includes

whether or not the transformer windings are referenced to

earth via a grounding conductor. The system conguration is
not based on how any specic load or equipment is connected

to a particular power distribution system.

480V System Example: SPDs should be installed per
the electrical system, not per a load or motor’s wiring
connection. For example, a 480V three phase motor might
appear to be connected as a 480V Delta. In actuality, the
serving distribution system might be a 480Y/277V grounded
Wye, with or without a neutral pulled to the motor or MCC.
The system is still a 480Y/277V Wye, even though the load

is connected as a Delta. A grounded Wye has a dened

reference to ground (i.e., neutral is bonded to ground).

Some Delta systems are ungrounded, which have no
reference to ground and are known to become unstable in
certain situations. Such instability can cause line to ground

voltage uctuations that may prematurely fail SPDs. For this

reason, the NEC® Article 285 has placed SPD restrictions
on ungrounded systems. As generalizations, SPDs for
ungrounded systems can be installed on grounded systems
with a clamping performance penalty. However, SPDs for
grounded systems installed on ungrounded systems are
almost certainly destined for premature failure. Call APT
Tech Support at [phone] for further information.

Circuit Breaker and Disconnect Switch

The XA & XB family SPDs are tested and qualied as a Type

1 SPD per UL 1449 Third Edition and 2008 NEC®. This SPD
can be installed on the line side of the service overcurrent
device per 2008 NEC® Article 285. As a generalization, it
is more practical to install on load side of main overcurrent
device for maintenance reasons.

When connected on load side of main disconnect, we suggest
connecting via a 60A circuit breaker. The circuit breaker is
the intended disconnect switch and provides short circuit
protection to the connecting conductors. These SPDs have
internal overload protection elements within the product. A
breaker or disconnect is not required for the SPDs overcurrent
protection. These SPDs have demonstrated 200kA Short
Circuit Current Ratings (SCCRs). 120V & 120/240V models
have demonstrated 100kA SCCRs. Refer to label on unit.

Terminals

Terminals will accept 14 - 2 AWG conductor and are provided
for line (phase), neutral (if used), and equipment safety ground
connections. 8 AWG is the minimum recommended wire size
because UL testing and evaluation was performed using 8 AWG.

Wire Size and Installation Torque

This is a parallel-connected SPD; it is not series-connected.
The size of the SPD wiring is independent of the ampere
rating of the protected circuit. Recommended wire is 6
AWG for phase, neutral and ground connections. Torque
connections to 18 inch-pounds. Conductor length should
be as short as possible.

If other wire sizes are used, we recommend that all
conductors be the same gauge. Note that larger conductor

might appear to be benecial. However, large conductor

tends to have the same inductance as smaller conductor,
thus netting limited improvement in exchange for being more

difcult to work with. Terminals accept 14 - 2 AWG conductor

with 6 AWG being preferred. Coordinate conductor size and
overcurrent protection per applicable codes.

If equipped, Disconnect Switch will accept 6 AWG to 1/0
AWG, with 6 AWG preferred. Torque connections to 18
inch-pounds. Do Not overtorque connections on Disconnect
Switch as it Will Break the Disconnect Switch and will not
be covered by warranty.

System Grounding

An equipment grounding conductor must be used on all
electrical circuits connected to the SPD.

For the best performance, use a single point ground system
where the service entrance grounding electrode system is
connected to and bonded to all other available electrodes,
building steel, metal water pipes, driven rods, etc. (for
reference see: IEEE Std 142-2007).

5

For sensitive electronics and computer systems, we
recommend that the ground impedance measurement be
as low as possible. When metallic raceway is used as an
additional grounding conductor, an insulated grounding
conductor should be run inside the raceway and sized per
the NEC®. Adequate electrical continuity must be maintained
at all raceway connections. Do not use isolating bushings
to interrupt a metallic raceway run.

A separate isolated ground for the SPD is NOT recommended.
Proper equipment connections to grounding system and

ground grid continuity should be veried via inspections and

testing on a regular basis as part of a comprehensive electrical
maintenance program.

On 4-Wire Power Systems, neutral to ground bonding (Main
Bonding Jumper) must be installed per the NEC®. Failure
to do so WILL damage SPDs.

Internal Mounting of XR and XW Component SPD

XR’s and XW’s are essentially XA’s without enclosures. XR’s
and XW’s are intended for installation within host electrical
equipment having suitable enclosures.

The experienced integrator will appreciate the simplicity
of XR/XW. XR/XW’s are Type 4 SPDs and have been
evaluated by UL for use as Type 1 (or Type 2) SPDs
when installed in appropriate enclosures. All UL required
safety testing is complete without needing additional

safety apparatus. Contact factory for UL le Engineering

Considerations. Mount SPD in appropriate enclosure,
mount Diagnostic Display in appropriate location and follow
appropriate instructions, including short leads. UL evaluation
within your completed product should be easy and trouble
free. Do not Hi-Pot test with SPD in circuit.

In many instances, a disconnecting means is appropriate
for future service. A breaker serves this function, as well
as provides overcurrent protection to the connecting
conductors. If a breaker or optional Disconnect Switch are
not used, consider a disconnect or safety switch having
appropriate SCCR rating including any required overcurrent
protection. Line side is likely to require a UL 98 switch where
load side is likely to require a UL 508 (or UL 98) switch.
This may be more time consuming, more expensive and
physically larger than anticipated. APT offers an optional
Disconnect Switch that has been UL evaluated as part of the
SPD. The optional Disconnect Switch is fully engineered and
almost certainly easier, smaller and less expensive. Please
contact APT Technical Support as appropriate.

Mounting Diagnostic Display: Mount the Display in a
user-friendly location, with consideration to weather and
vandalism. Dimensions are in Figure 4 (page 7). A Display
with a 6’ connector cable is typically included. Longer lengths
are available. The Display is also mountable directly on the
XR/XW module (shorter cables required). The standard
Display includes mounting thru-holes and is not weather
resistant. Contact factory for weather resistant NEMA 4 rated
Display (with mounting studs instead of thru-holes and label

material including UL 746C(f1) & UL 94-5VA ame rating).

UL 1283 required language concerning the installation
of EMI Filters
a) An insulated grounding conductor that is identical in size

and insulation material and thickness to the grounded and
ungrounded circuit supply conductors, except that it is green
with or without one or more yellow stripes, is to be installed

as part of the circuit that supplies the lter. Reference should

be made to Table 250-122 of the National Electrical Code
regarding the appropriate size of the grounding conductor.

b) The grounding conductor mentioned in item a is to
be grounded to earth at the service equipment or other
acceptable building earth ground such as the building frame
in the case of a high-rise steel-frame structure.

c) Any attachment-plug receptacles in the vicinity of the

lter are to be of a grounding type, and the grounding

conductors serving these receptacles are to be connected
to earth ground at the service equipment or other acceptable
building earth ground such as the building frame in the case
of a high-rise steel-frame structure.

d) Pressure terminal or pressure splicing connectors and

soldering lugs used in the installation of the lter shall be
identied as being suitable for the material of the conductors.

Conductors of dissimilar metals shall not be intermixed in a
terminal or splicing connector where physical contact occurs

between dissimilar conductors unless the device is identied

for the purpose and conditions of use.

Optional Flush Mount Installation Considerations

The XA & XB are approximately 6” deep. The unit will not

mount ush unless there is at least 6” of depth clearance.
The XA & XB are not designed to mount ush on a typical

2 x 4 stud wall.

Back Flange Mounting: Mount as close as possible to
protected panel. Create a wall opening slightly larger than

SPD. See Figure 4. Congure a robust backing plate inside

Figure 3

6

FLUSH MOUNT INSTALLATION

STEP 1:

Prepare Wall

- Must support
25-55lbs

Cutout slightly larger than
SPD base

Mounting Plate
6 1/16” from
outside of front
wall

STEP 2:

Mount SPD

STEP 3:

Install Flush
Mount Plate
& Cover

the wall cavity 6 1/16” from the wall face such that the SPD

0.000

0.000

1.384

1.699

2.014

2.329

3.437

0.951

4.618

0.559

0.250

4.875

0.250

3.690

0.180 THRU 4 PL.

R0.375 4 PL.

Count Reset

3.963

1.798

2.861

CLEAR WINDOW TYP.

Phase C

Service

Phase B

Phase A

Test

Silence

Surge Counter

0.497

0.654

1.324

1.994

Ø.50 BLACK BORDER TYP.

1.660

BLACK LETTERS (SURGE COUNTER)
BACKGROUND TO BE PANTONE 441C

RED LETTERS (ALARM SILENCE ONLY)
PANTONE 185C

BACKGROUND TO BE PANTONE 445C

PANTONE 441C 4 PLACES

R0.062 4 PL.

BLACK BORDER

2.999

2.077

2.737

2.545

2.269

0.125 TRANSLUCENT WINDOW 5 PL.

is supported from its back. Note the mounting holes on the

back ange. Also note that the SPD weighs 22-52 lbs. Be

careful not to drop the SPD into the wall.

Disconnect Switch
(Opt. on XA, Std. on XB)

The disconnect switch provides manual disconnection
means for phase conductors and the neutral conductor.
Ground is not switched.

Special care should be taken while pre-planning installation
to ensure that leads are as short as possible. Most XA’s &
XB’s in ‘square’ enclosures have backplanes that can be
removed and repositioned to reduce leads. See Figure 8.
(Models with rectangular enclosures may be repositioned
by inverting only.) (Excludes thru-door handle options.)

There is limited working space around the Disconnect
Switch. This is a consequence of reducing internal size
and lead lengths. Please be patient.

Disconnect switch will accept 6 AWG to 1/0 AWG, with 6
AWG preferred. Torque connections to 18 inch-pounds.
OVER-TORQUING connections WILL BREAK the
Disconnect Switch and will not be covered by warranty.

The disconnect switch is mounted on DIN-rail. It may be
removed by gently pulling out the mounting tab at the
bottom of the switch assembly.

APT is one of few SPD manufacturers that make Disconnect

Switches available as a fully UL qualied option. The
Disconnect Switch was included during UL certication

and testing. The Short Circuit Current Rating posted on
the UL label of the SPD includes the Disconnect Switch
and supersedes any rating on the individual Disconnect
Switch. When used in a Type 1 line-side application, the
SPD including its Disconnect Switch has been UL tested
and approved. Further evaluation is not required by UL, nor
is a separate UL 98 rated switch required.

Module Rotation Feature

Installation lead wire length must be minimized because
longer leads hurt performance. Lead length may be reduced
by rotating the module inside the enclosure. SPD ships with
terminals pointing down. If installation lends itself toward
other orientation, the module’s aluminum backplane can be
unscrewed and reoriented. For example, if leads enter from
top, rotate module assembly such that leads are shortest.
Be careful with ribbon cable connector and take care to
retighten screws & secure ribbon cable. Mounting screws
are in four corners. Rectangular enclosures may be rotated
up or down only. See Figure 5.

Figure 5

ROTATING MODULE

DESIGN ALLOWS FOR

SHORTER LEADS

Diagnostic Cable Connector

Mounting Screws
in Corners

Figure 4

INTERNAL MOUNT

DISPLAY DIMENSIONS

7

INSTALLATION

Pre-Plan your installation. You will need to accomplish the following:

▪ Meet all National and Local codes. (NEC

®

Article 285 addresses SPDs)

▪ Mount SPD as close to panel or equipment as possible to keep leads short.
▪ Ensure leads are as short and straight as possible, including neutral and ground.

Consider a breaker position that is closest to the SPD and the panel’s neutral & ground.

▪ Suggested breaker & conductor size is 60A-30A with 6 AWG.
▪ Make sure system is grounded per NEC

®

and clear of faults before energizing SPD.

Certain options or implementations require extra consideration. See appropriate sections

within this manual:

▪ Line Side Installation (page 4)
▪ Internal or Integral Mount Installation inside electrical gear (page 7)
▪ Disconnect Switch Option (page 7)
▪ Flush Mount Option (page 6)
▪ Retro-t where no breaker positions are available (page 11)
▪ UL/NEMA 3R Drain Holes (page 10)

1. Use a voltmeter to check all voltages to ensure correct SPD.

2. If SPD has Dry Contact, Remote Monitoring or Remote Display, pre-plan their installation.

3. Remove power for panel. Conrm panel is deenergized.

4. Identify connection/breaker location and SPD location.

5. Make sure leads are short. Reducing inches matters. Pretend that connector leads cost you
$1000/foot to make leads short!

Installation Tips: SPD module is mounted on backplane within its enclosure. In many cases, the backplane assembly
can be unbolted and rotated in two or four directions to yield shortest leads. See Fig 8. Carefully disconnect ribbon

cable(s) and unbolt backplane assembly. Various congurations have limited work space. Please be patient. Installation

may be easier if disconnect switch is temporarily removed from DIN-rail, or module/backplane is temporarily removed.

6. Remove an appropriately sized knockout from panel. Create an appropriately sized and lo­cated hole in the SPD enclosure.

7. Mount SPD. Connect to equipment using an approved wiring method, including seals appropriate for
the enclosure rating. Carefully reinstall backplane or disconnect switch as appropriate.

8. Connect conductors as appropriate – short and straight as possible
(Note that Hi-Legs are Phase B).

9. Label or mark conductors as appropriate
(neutral: white, ground: green, energized: black, hi-leg: orange).

10. Make sure system is bonded per NEC® and is clear of hazards or faults before energizing (N-G
bonding not per NEC® will fail SPDs: #1 cause of SPD failures).

11. Energize and conrm proper operation of indicators and/or options. If Red LED ashes &
Audible Alarm cycles, deenergize immediately and call for help.

Figure 6

To Protected Loads

8

TYPICAL PANEL INSTALLATION

BC

A

BREAKER

Advanced Protection Technologies

Phase A

Surge Counter

Phase B

Phase C

Service

GN

Silence

Test CountReset

▪ Use closest breaker to SPD
▪ Locate SPD close to intended breaker

▪ Keep Leads Short as Possible
▪ Avoid Sharp Bends

▪ Outdoor installation requires appropri-

ate weather sealing at nipple (o-ring,
sealing condulet, etc.)

}

}

Figure 7

C

Advanced Protection Technologies, Inc.

Clearwater, Florida

Listed

56E3

TVSS

U

R

L

N

CAUTION

G

A

TWO POLE

2

1

3

46

5

7

8

Advanced Protection Technologies, Inc.

Clearwater, Florida

Listed

56E3

U

R

L

G

CAUTION

CB NA

THREE POLE W/ DS

N

CAUTION

B

N

CAUTION

BA

ELECTRICAL DRAWINGS FOR CUSTOMER CONNECTIONS

SINGLE POLE

Advanced Protection Technologies, Inc.

Clearwater, Florida

56E3

Listed

U

R

L

B

G

THREE POLE

Advanced Protection Technologies, Inc.

Clearwater, Florida

56E3

Listed

U

R

L

C

BA

G

Hot (BLK)

V

}

Neutral (WHT)

}

V

Hot (BLK)

Ground (GRN)

SPLIT
2 Hots, 1 Neu, 1 Grnd

CAUTION

N

CAUTION

N

TWO POLE

Advanced Protection Technologies, Inc.

Clearwater, Florida

TVSS
56E3

Listed

U

R

L

C

G

THREE POLE W/ DS

Advanced Protection Technologies, Inc.

Clearwater, Florida

56E3

Listed

U

R

L

3

1

5

7

2

46

G

CB NA

DELTA & HRG WYE
3 Hots, 1 Grnd

CAUTION

Advanced Protection Technologies, Inc.

G

Clearwater, Florida

THREE POLE

A

N

B

C

TVSS

U

L

56E3

R

Listed

3

1

5

2

4 6

Clearwater, Florida

Listed

Advanced Protection Technologies, Inc.

R

56E3

L

U

TVSS

A

B

N

C

CAUTION

7

8

CAUTION

A

N

CAUTION

ABNC

8

Phase A (BLK)

V

Phase B (BLK)

Phase C (BLK)

Ground (GRN)

Hot (BLK)

V

Neutral (WHT)

Ground (GRN)

SINGLE POLE
1 Hot, 1 Neu, 1 Grnd

Phase A (BLK)

A

Phase B (BLK)

B

Neutral (WHT)

N

V

}

Phase C (BLK)

C

Ground (GRN)

WYE
3 Hots, 1 Neu, 1 Grnd

Phase A (BLK)

Phase B (ORNG)

V

}

Phase C (BLK)

Neutral (WHT)
Ground (GRN)

HI-LEG DELTA (B High)
3 Hots, (B HIGH),
1 Neu, 1 Grnd

Phase A (BLK)

V

}

Phase C (BLK)

Ground (GRN)

CORNER GROUND
DELTA (B grounded)
2 Hots, 1 Grnd

9