Powerware SPD Features
- UL 1449 3rd Edition recognized component for the United
States and Canada, covered by Underwriters Laboratories certification
and follow-up service
- Utilizes thermally protected metal oxide varistor (MOV)
technology
- 20 kA nominal discharge current (In) rating (maximum rating
assigned by UL)
- 50 through 400 kA surge current capacity ratings
- Three feature package options
- 200 kA short circuit current rating (SCCR)
- 10-year warranty
- Available integrated within the following Eaton electrical
assemblies: panelboards, switchboards, motor control centers,
switchgear, automatic transfer switches and bus plugs
Introduction
Eaton’s SPD series surge
protective devices are the
latest and most advanced UL
1449 3rd Edition certified surge
protectors. Units are available
integrated within Eaton electrical
assemblies, including panelboards,
switchboards, motor
control centers, switchgear
and bus plugs. Application of
SPD Series units throughout a
facility will ensure that equipment
is protected with the safest and
most reliable surge protective
devices available.
SPD Series units are available
in all common voltages and
configurations and also in a
variety of surge current capacity
ratings from 50 through 400 kA.
Three feature package options
are also available to choose from.
Applications
The ever increasing use of microprocessors and other
sensitive electronic equipment
has increased the necessity for
facility-wide surge protection.
These sensitive electronic components
are utilized within many
pieces of equipment, including
computers, programmable logic
controllers, and other commonly
used electrical and electronic
equipment. Surges can wreak
havoc on equipment, causing
catastrophic failures, process
interruptions and premature
aging leading to failure. The
application of surge protective
devices (SPDs) can mitigate
problems with sensitive electronic
equipment, keeping the
equipment and the related
processes up and running reliably
without disruption or damage
due to surge-related events.
In addition to externally
generated surge events, such
as lightning and grid switching,
equipment is also susceptible to
damage by internally generated
surges. In fact, the majority of
surges are generated internally
by commonly used items, such
as fluorescent lighting ballasts,
light dimmers, photocopiers, fax
machines and variable frequency
drives. This further reinforces
the necessity for facility-wide
surge protection applied at all
stages of the electrical distribution
system, from the electrical
service entrance down to the
single-phase loads.
Surge
suppression is now safer than ever with the SPD series
The SPD Series employs safety
and design features that make
surge protection safer than ever.
Unlike many surge protective
devices, the SPD Series contains
no user-serviceable parts
or items that require periodic
maintenance, such as replaceable
surge modules, replaceable
fuses, surge counter memory
backup batteries or wire lugs
that require periodic retightening.
Integrated versions of the
unit are factory installed, meaning
no potential contact with
harmful voltages present within
the unit is possible.
The SPD Series has also taken
safety to the next level by using
thermally protected metal oxide
varistors (MOVs) as its core
surge suppression component.
These thermally protected
MOVs operate in a safe manner,
even when subjected to
abnormal conditions, such as
temporary overvoltages or high
fault current conditions. When
one of these conditions exists,
the thermally protected MOVs
are removed from the circuit
quickly and safely before a
potentially unsafe condition
can occur, with absolutely no
discharge of smoke or ionized
gases. Usage of this technology
eliminates any concerns of
damage occurring to other
components within the electrical
assembly should failure of an
integrated SPD occur. Using the
latest in technology and surge
protective device design, the SPD
Series provides safe, reliable,
worry-free surge protection.
The integrated SPD
performance advantage
Installation conductor length
is the single most important
factor related to an SPD’s
performance. Performance
decreases as the connected
conductor length increases.
Integrating the SPD within the
electrical assembly provides the
best possible surge protection
by keeping installation
conductor lead lengths as short
as possible. Integrating the SPD
within an electrical assembly
can decrease let-through
voltages by hundreds of volts,
providing you with the best
possible surge protection for
sensitive electronic loads.
The SPD Series is available
as an integrated device
within the following
Eaton
electrical assemblies:
• Panelboards
• Switchboards
• Motor control centers
• Switchgear
• Automatic transfer switches
• Bus plugs
Enhanced protection
status indicators
The Eaton SPD Series has
elevated the features normally
found within surge protective
devices to the next level. Unlike
many surge protectors that may
have only single-colored indicators
that simply indicate whether
power is applied to the SPD,
each SPD Series unit includes
dual-colored protection status
light emitting diodes (LEDs)
that indicate the true status of
the protection. On three-phase
units, if power is removed from
a phase, the unit’s protection
status LEDs continue to indicate
the status of the protection on
that phase, not the status of the
power applied to the phase. This
new feature ensures that the
user is supplied with accurate
information concerning the
status of the protection the SPD
is supplying on the phase, not
the status of the power applied
to the phase.
All units that require a neutral
wire connection also contain
an additional set of dual-colored
LEDs that report the status of
the protection in the neutralground
(N-G) protection mode.
Like the phase protection status
LEDs, the N-G protection
status LEDs also report the
true status of the protection
in the N-G mode.
Although most SPDs on the
market contain N-G mode protection,
they do not monitor and
indicate the status of the protection
in that mode. Specifying
the SPD Series’ N-G protection
mode status indication feature
will ensure that users are
supplied with complete and
accurate information concerning
the SPD’s protection status.
20 kA nominal discharge
current rating (In)
The entire SPD Series product
offering has a nominal discharge
current (In) of 20 kA, the highest
achievable rating for this important
parameter. This is a new
rating for SPDs that is included
as part of UL 1449 3rd Edition
testing and certification. This
rating provides an indication of
the SPD’s design robustness
and ability to handle a number
of large-magnitude surges
over a short period of time
and remain operational within
tested parameters.
During In testing, the SPD is
subjected to 15 surges of a
current magnitude chosen by
the SPD’s manufacturer. Valid
current magnitude choices for
the test are 20 kA and 10 kA for
Type 1 SPDs. Valid choices for
Type 2 SPDs are 20 kA, 10 kA,
5 kA and 3 kA. The 15 surges
are then applied at the value
chosen by the manufacturer.
Prior to the start of In testing,
a preliminary voltage protection
rating (VPR) is measured. The
VPR is the measured let-through
voltage of the unit when a 6 kV,
3 kA surge is applied. This value
is documented and saved as a
reference. After all surges have
been applied, the VPR is measured
once again and compared
to the value that was recorded
prior to the 15-surge sequence.
In order to pass the In test, the
SPD must survive all 15 surges,
and the measured pre- and
post-VPR values must be within
±10% of each other.
Choosing an SPD with an In
of 20 kA ensures that your
equipment is being protected
by a unit that will continue to
maintain a high level of surge
protection performance, even
after being subjected to multiple
high-magnitude surges.
Industry standards for lightning
protection systems require
the installed SPDs to have a
nominal discharge current of
20kA. The 2008 edition of
National Fire Protection Agency
(NFPA) Standard 780, titled
“Standard for the Installation of
Lightning Protection Systems,”
states the requirement in
section 4.18.3.1.2. The 2007
edition of Underwriters
Laboratories (UL) Standard 96A,
titled “Installation Requirements
for Lightning Protection
Systems,” states the requirement
in section 13.1. Choosing
an SPD with an In of 20 kA
will ensure that compliance
with these standards can
be achieved.
Feature package options |
Basic feature package |
Standard feature package |
Standard with surge
counter feature package |
The SPD Series provides
users
with the option of selecting
between three feature packages.
These feature packages are the
basic, standard and standard
with surge counter. The proper
feature package can be selected
based on the requirements of
the application or specification. |
The basic feature package
is
perfect for applications where
basic, cost-effective, safe and
reliable surge protection is
required but budgets don’t allow
for extra, additional features.
Rather than sacrifice performance
or safety due to cost,
SPD Series units with the basic
feature package provide you
with high-performing surge protection
without sacrificing safety
or reliability. The basic feature
package provides the same level
of surge protection and safety
provided by the standard and
standard with surge counter
feature packages minus some of
the features found in them. The
package contains dual-colored
protection status LEDs that
report the true status of the
protection in each phase/mode.
All four-wire plus ground units
also contain an additional set of
dual-colored protection status
LEDs that report the status of
the protection in the neutralground
mode. |
The standard feature package
includes all of the features
found in the basic feature package,
plus an audible alarm with
silence button, EMI/RFI filtering,
and a form ‘C’ relay contact
that can be used for remote
annunciation of the SPD’s status.
The audible alarm activates
and the form ‘C’ relay contact
changes state when any loss of
protection is detected or a fault
condition exists with the unit.
Should such a condition occur,
the audible alarm can be
silenced by pressing the silence
button. The EMI/RFI filter
provides up to 50 dB of noise
attenuation over the range of
10 kHz through 100 MHz. |
The standard with surge
counter feature package
includes all of the features found
in the standard feature package
plus a six-digit surge counter
with a reset button. The surge
counter indicates the ongoing
count of the number of surges
the unit has been exposed to
and stores them in nonvolatile
memory. Should power to the
SPD Series unit be completely
interrupted, the surge counter
will recall and display the surge
count prior to the interruption
when power is restored. Unlike
many surge protectors, the SPD
Series’ surge counter memory
feature does not require a backup
battery that would require
periodic replacement in order to
achieve its memory functionality. |
Technical Specifications
| Description |
Ratings |
| Surge current capacity per phase |
50, 80, 100, 120, 160, 200, 250, 300 and 400 kA ratings available |
| Nominal discharge current (In) |
20 kA |
| Short circuit current rating (SCCR) |
200 kA |
| SPD type |
Basic Feature Package = Type 1 (can also be used in Type 2 applications) Standard and Standard with Surge Counter Feature Packages = Type 2 |
| System Voltages Available (Vac) |
| Single split-phase (three-wire plus ground) |
120/240 |
| Three-phase wye (four-wire plus ground) |
120/208, 127/220, 230/400, 277/480, 347/600 |
| Three-phase delta (three-wire plus ground) |
240, 480, 600 |
| Three-phase high leg delta (four-wire plus ground) |
120/240 |
| Input power frequency |
50/60 Hz |
| Protection Modes |
| Single split-phase |
L-N, L-G, L-L, N-G |
| Three-phase wye |
L-N, L-G, L-L, N-G |
| Three-phase delta |
L-G, L-L |
| Three-phase high leg delta |
L-N, L-G, L-L, N-G |
| Operating temperature |
–20°C through 50°C (–4°F through 122°F) |
| Operating humidity |
5% through 95%, noncondensing |
| Agency certifications and approvals |
UL 1449 3rd Edition recognized component for the United States and Canada; UL 1283 (Type 2 SPDs only) |
| Warranty |
10 years |
Ordering Guide
SPD Series catalog number configuration for
units integrated into electrical distribution
equipment
Example: SPD250480D2J = SPD Series, 250 kA per
phase, 480D voltage, standard feature package,
motor control center application |
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