SECTION 16289
SURGE PROTECTIVE DEVICE
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
1.2
Drawings and general provisions of the Contract, including General and Supplementary
Conditions, apply to this Section.
SUMMARY
A.
These specifications describe the electrical and mechanical requirements for a system of
hybrid electrical transient surge suppression filter components integrating both transient
voltage surge suppression (TVSS) and electrical high frequency noise filtering for
exposure locations as defined in ANSI/IEEE C62.41-1991.
B.
The system shall consist of parallel connected components:
1.
2.
3.
1.3
STANDARDS
A.
The specified system components shall be designed, manufactured, tested and installed
in compliance with the following standards.
1.
2.
3.
4.
5.
1.4
Main Panel System(s)
Panelboard System(s)
Connection Method
ANSI/IEEE (C62.41-1991 and C62.45-1987);
NEC (240-21, 110-9);
NEMA (LS 1-1992 Guidelines);
NFPA (70 [NEC], 75 and 78);
UL (248-1, 1283, 1449 Second Edition).
QUALITY CONTROL
A.
Single Pulse Surge Current Capacity:
1.
In compliance with NEMA LS-1-1992, paragraphs 2.2.9 and 3.9, each design
configuration shall have the maximum single pulse surge current tested in all
modes at rated surge currents by an industry-recognized independent test
laboratory.
a.
b.
2.
Single pulse surge current capacities of 200,000A or less per mode are
established by single pulse testing of all modes.
Due to present industry test equipment limitations, single pulse surge
current capacities over 200,000A are established via testing of subassemblies within a mode.
Single Pulse Surge Current Capacity Test.
a.
An initial UL1449 Second Edition surge defined as a 1.2 X 50 Φsec,
6000V open circuit voltage waveform and an 8 X 20 Φsec, 500A short
circuit current waveform is applied to benchmark the unit’s suppression
voltage.
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SECTION 16289
SURGE PROTECTIVE DEVICE
b.
c.
3.
B.
Survival is achieved if the suppression voltage measured from the two UL1449
surges does not vary by more than 10%.
Minimum Repetitive Surge Current Capacity.
1.
Each design configuration shall have a repetitive surge current capacity rating
which shall be verified through testing.
2.
Minimum Repetitive Surge Current Capacity Test:
a.
b.
c.
C.
An initial UL1449 Second Edition surge defined as a 1.2 X 50 sec,
6000V open circuit voltage waveform and an 8 X 20 sec, 500A short
circuit current waveform is applied to benchmark the unit’s suppression
voltage.
A repetitive number of ANSI/IEEE C62.41-1991 (Category C3) surges
defined as a 1.2 X 50 microsecond 20,000V open circuit voltage
waveform and an 8 X 20 microsecond 10,000A short circuit current
waveform are then applied at one minute intervals.
To complete the test, another UL1449 surge shall be applied to verify the
unit’s survival.
3.
Survival is achieved if the suppression voltage measured from the two UL1449
surges does not vary by more than 10%.
4.
Proof of such testing shall be the test log generated by the surge generator.
Short Circuit Fuse Testing.
1.
Each design configuration shall be short circuit tested in accordance with the type
of fusing utilized in the suppression path.
2.
Short Circuit Fuse Test:
a.
b.
3.
D.
A single pulse surge of maximum rated surge current (for units rated over
200,000A per mode, components or sub-assemblies are tested)
magnitude with an approximated 8 X 20 Φsec waveform is then applied.
To complete the test, another UL1449 surge shall be applied to verify the
unit’s survival.
Testing shall include application of a sustained overvoltage that causes
the unit to enter a bolted fault condition.
This bolted fault condition shall occur with the full rated AIC current of the
fuse available.
The fuse shall fail in a safe manner with no physical or structural damage to the
unit and any failure shall be self-contained within the unit.
Surge Current Fuse Testing.
1.
Each design configuration shall be surge tested with fusing in series to verify that
a transient of maximum surge current capacity magnitude is fully suppressed
without fuse failure, operation or degradation.
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SECTION 16289
SURGE PROTECTIVE DEVICE
1.5
WARRANTY
A.
1.6
The manufacturer shall provide, for each system component, a Limited Fifteen (15) Year
Warranty, from date substantial completion, against failure when installed in compliance
with applicable national/local electrical codes and the manufacturer’s Installation,
Operation and Maintenance Instructions.
SUBMITTALS
A.
The following shall be required submittal data:
1.
The manufacturer shall furnish with the submittal an equipment manual that
details the installation, operation and maintenance instructions for the specified
system components.
2.
Electrical and mechanical drawings shall be provided by the manufacturer with
the submittal that show unit dimensions, weights, mounting provisions,
connection details and layout diagram of the unit.
PART 2 PRODUCTS
2.1
ACCEPTABLE MANUFACTURERS/PRODUCTS
A.
B.
2.2
These specifications are based on Current Technology’s MasterPLAN system
components as follows:
1.
Main Panel System:
SEL300 Series with DM and L3 options
2.
Panelboard System:
TG60 Series with DM and L3 options
3.
Connection Method:
HPI Cable
Prior Approved Equal.
1.
Other manufacturers wishing to have their products evaluated for equivalence
shall provide detailed compliance or exception statements, along with supporting
test documentation, to all provisions of this specification no less than 7 days prior
to the bid date.
2.
Failure to provide the required documentation no less than 7 days prior to the bid
date will disqualify products from consideration for this project.
ELECTRICAL REQUIREMENTS
A.
The nominal operating voltages and configurations for each system component shall be
as indicated on the drawings.
B.
The maximum continuous operating voltage (MCOV) of the suppression system utilized in
each system component shall not be less than 115% of the respective nominal operating
voltage.
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SECTION 16289
SURGE PROTECTIVE DEVICE
C.
Each system component shall provide protection in all applicable modes; Line-to-Neutral,
Line-to-Line, Line-to-Ground and Neutral-to-Ground.
D.
The tested single pulse surge current capacity, in amps, for each mode of protection of
the respective system components shall be no less than as follows (See 1.04. A):
E.
1.
Main Panel System:
300,000 A per mode/600,000 A per phase
2.
Panelboard System
60,000 A per mode/120,000 A per phase
Based on the ANSI/IEEE C62.41-1991, Category C3 impulse (20,000V and 10,000A), the
minimum repetitive surge current capacity, in number of surges, for each mode of
protection, without degrading the let-through voltage more than 10%, of the respective
system components, shall be no less than as follows (See 1.04. B):
1.
Main Panel System:
15,000 Surges
2.
Panelboard System:
3,500 Surges
F.
Each system component shall be UL1449 Second Edition Listed as a complete entity,
with a Safety Interlocked Integral Disconnect Switch. (See 2.03. B)
G.
System components shall comprise a coordinated filter system and shall be UL1283 listed
as an Electromagnetic Interference Filter. The filter shall reduce fast rise-time, high
frequency, error-producing transients and electrical line noise to harmless levels, thus
eliminating disturbances, which may lead to electronic system upset. The filter shall
provide minimum noise attenuation at the benchmark frequencies as follows:
FREQUENCY 50 KHz 100 KHz 500 KHz 1MHz 5MHz 10 MHz 50 MHz
Attenuation (dB) 85
83
68
68
68
67
78
100 Hz
84
NOTE: Standardized insertion loss data obtained utilizing MIL-STD-220A 50 ohm insertion loss
methodology, based on a minimum of 100 ft. of #4 AWG conductor between the two
devices. Noise source = 100' to model maximum average circuit distance, filter
connection distance = 6".
2.3
SYSTEM COMPONENTS
A.
Field Connections.
1.
Each system component shall include mechanical or compression lugs which
accommodate copper conductors for each phase, neutral and ground as follows:
a.
b.
2.
B.
The Main Panel System lugs shall accommodate #6 AWG.
The Panelboard System lugs shall accommodate #10 AWG.
Attachement shall be made from the unit to the source with HPI cable, as shown
on the drawings.
Safety Interlocked Integral Disconnect Switch.
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SECTION 16289
SURGE PROTECTIVE DEVICE
C.
1.
Each system component shall include a NEMA designed and certified safety
interlocked integral disconnect switch located within the unit with an externally
mounted metal manual operator.
2.
The switch shall disconnect all ungrounded circuit conductors from the distribution
system to enable testing and maintenance without interruption of power to the
facility's distribution system.
3.
The switch shall be rated for 600Vac.
4.
The TVSS device shall be UL1449 Second Edition Listed with the integral
disconnect switch and the UL1449 Second Edition Suppression Voltage Ratings
shall be provided. (See 2.01. F)
5.
The integral disconnect switch shall be capable of withstanding, without failure,
the published maximum surge current magnitude without failure or damage to the
switch.
Overcurrent Protection.
1.
For each system component, all suppression elements shall be individually fused
to ensure that the failure of a single component or the operation of a single fuse
element remains isolated and does not render the entire mode, or product,
deficient by more than the following percentages:
a.
b.
Main Panel System:
Panelboard System:
5%
17 %
2.
For systems utilizing a hybrid technology, each element type shall be individually
fused.
3.
Every electrical current carrying conductor shall be fused to ensure that every
fault is isolated at the point of the fault or at the device level.
4.
Fusing shall be present in all modes, including Neutral-to-Ground.
5.
All overcurrent / fault current protection shall be UL248-1 Recognized as a standalone fuse.
6.
All fusing must be UL248-1 Recognized and tested at 200kAIC. Testing shall be
inclusive of all available product voltages.
7.
In accordance with UL248-1, all fuses and overcurrent / fault current devices must
be tested with a 0.2 power factor.
8.
All fuses and overcurrent / fault current protection devices shall consist of selfarch-quenching, sand-encapsulated UL248-1 Recognized fuse arrays. Each fuse
shall be individually sealed in a manner that eliminates cross arching.
9.
The device shall be capable of withstanding the full single pulse surge current
capacity for every mode without the operation or failure of overcurrent / fault
current protection or fuses.
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SECTION 16289
SURGE PROTECTIVE DEVICE
D.
E.
Transient Conduction Path.
1.
All full magnitude transient current shall be conducted on low-impedance solid
copper bussing.
2.
If printed circuit boards are utilized in surge current paths, no single trace shall be
allowed to conduct more than the proportional current share of the connected
TVSS component.
3.
No plug-in component modules or quick-disconnect terminals shall be used in
surge current-carrying paths.
Suppression System.
1.
Main Panel System:
a.
b.
c.
d.
2.
Panelboard Systems:
a.
b.
F.
The Main Panel System shall be capable of dissipating large amounts of
average power that may be caused by overvoltage events and voltage
swells as well as repetitive transient impulses.
(1)
The Main Panel System shall be capable of dissipating and
surviving the effects of a 200% overvoltage condition for 3600
cycles at a power system line impedance of .7 ohms.
(2)
The Main Panel System shall be capable of dissipating and
surviving the effects of a 200% overvoltage condition for 30
cycles at a power system line impedance of .3 ohms.
The Main Panel System shall include an engineered, non-degrading,
solid-state suppression system component, which incorporates a
predetermined number of selenium cells.
The thermal mass of the solid-state suppression system for the Main
Panel System shall be no less than as follows:
(1)
480Y/277 V Systems: 3,089 Square Inches.
(2)
208Y/120 V Systems: 1,320 Square Inches
Suppression systems incorporating only metal oxide varistors do not
meet the intent of this specification and are not acceptable.
The Panelboard Systems shall include an engineered solid state
suppression system, utilizing arrays of fused non-linear voltage
dependent metal oxide varistors with similar operating characteristics.
The suppression system components shall optimally share surge currents
in a seamless, low-stress manner.
Performance Monitoring System.
1.
Status Indication:
a.
b.
2.
Each system component shall be provided with status indication allowing
for visual inspection of the online status of all hybrid elements: selenium,
MOVs, and capacitors.
Status indication shall be provided for each phase.
Dual Form “C” Dry Contacts:
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SECTION 16289
SURGE PROTECTIVE DEVICE
a.
b.
3.
Display Event Counter:
a.
b.
4.
b.
c.
d.
b.
Each system component shall provide visual and audible indication of
product fault occurring neutral-to-ground.
Neutral-to-Ground Current Sensing:
a.
b.
8.
Each system component shall provide numeric display of the available
surge protection online.
The microprocessor-based circuitry shall sense each hybrid element’s
fuse, and shall be capable of calculating the amount of protection still
active in the circuit and displaying a percentage amount.
Neutral-to-Ground Fault Indication:
a.
7.
Each system component shall be provided with a battery powered
audible alarm that detects and provides notification of single or multiple
phase failure of the suppression filter system.
The alarm shall have a silence switch as well as a test switch for ensuring
positive function and an alarm LED that illuminates when the alarm is
disabled.
The monitoring unit shall have an easily replaceable, commonly available
battery for backup to ensure audible alarm function in the event of a total
power failure.
The unit shall have a battery backed-up LED which shall illuminate when
battery requires replacement.
% Protection Available:
a.
6.
Each system component shall be provided with a display event counter
that makes available the cumulative number of transients the device has
been subjected to.
The detection circuitry must be current sensing to eliminate erroneous
counts that may be produced from stray voltages and noise signals, both
conducted and radiated.
Battery Powered Audible Alarm:
a.
5.
Each system component shall be provided with 2 sets of form “C” dry
contacts (normally open and normally closed) to facilitate connection to a
building management system or other remote monitoring system.
The contacts shall be normally open or normally closed and shall change
state upon failure of the suppression system or power loss in any of the
phases.
Each system component shall provide indication if continuous overcurrent
is detected flowing neutral-to-ground.
Neutral-to-Ground current indication may signal neutral-ground bonding
issues within the distribution system.
Neutral-to-Ground Current Sensing:
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SECTION 16289
SURGE PROTECTIVE DEVICE
a.
b.
9.
True RMS Voltage Monitor:
a.
10.
Each system component shall provide visual indication and count of all
power outages > 1 cycle.
Integral Test Point:
a.
b.
c.
G.
Each system component shall provide visual indication and count of all
power dropouts < 1 cycle.
Power Outage Detection:
a.
14.
Each system component shall provide visual indication and count of all
voltage swells > 110% of nominal.
Power Dropout Detection:
a.
13.
Each system component shall provide visual indication and count of all
voltage sags < 90% of nominal.
Voltage Swell Detection:
a.
12.
Each system component shall provide true RMS voltage monitoring for all
phases along with neutral-to-ground.
Voltage Sag Detection:
a.
11.
Each system component shall provide digital display of neutral-to-ground
current flowing in the system.
Neutral-to-Ground current indication may signal neutral-ground bonding
issues within the distribution system.
Each system component shall incorporate an integral test point allowing
easy off-line diagnostic testing verifying the operational integrity of each
unit’s suppression system. Field testing shall permit proactive testing to
ensure performance and long term reliability.
Testing shall include injection of an impulse into the off-line suppression
system to verify the suppression performance values established at final
factory testing and recorded on the Diagnostic Signature Card of each
system component.
Indicator lights monitoring fuse condition or power available which inform
the user of failure after the fact are not acceptable to meet the intent of
this specification.
Diagnostic Signature Card.
1.
Each system component shall include a Diagnostic Signature Card listing factoryestablished benchmark suppression voltage values for all modes of protection.
The suppression voltage values shall be established during final production line
testing utilizing a Diagnostic Test Set.
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SECTION 16289
SURGE PROTECTIVE DEVICE
PART 3 - EXECUTION
3.1
3.2
FIELD INSTALLATION
A.
Each system component shall be installed in accordance with the manufacturer’s
installation instructions and applicable national/local electrical codes.
B.
The unit shall be connected with high performance interconnect cable between
suppressor and point of attachment, keeping the length as short and straight as possible.
Do not bond neutral and ground.
CERTIFICATION OF ON-LINE STATUS AND SUPPRESSION LEVELS
A.
The manufacturer’s representative shall provide start-up support to confirm the proper
wiring and on-line status of each system component.
B.
The manufacturer’s representative shall test each installed unit with a p[ortable surge
generator that verifies the unit’s suppressed voltages (in all modes) are within factory
guidelines and also verifies the integrity of the neutral-to-ground [Xo] bond. Additionally,
testing shall be done with a factory meter to verify 100% capability of all hybrid elements;
i.e., Selenium, MOVs and Capacitors. The test report shall be sent to the OWNER and to
the specifying engineer for inclusion with the project records and close-out documents.
C.
The manufacturer’s representative shall demonstrate to the appropriate OWNER’s
personnel the performance monitoring system features of all suppression system
components.
END OF SECTION
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