CITY OF EDGEWATER
FIRE STATION 55
50% CONSTRUCTION DOCUMENTS
June 14, 2010
SECTION 16280 - SURGE PROTECTIVE DEVICES (TVSS)
PART 1 - GENERAL
1.01
RELATED DOCUMENTS:
The general provisions of the Contract and the requirements of Section 16050 apply to
the Work specified in this Section.
1.02
SUMMARY:
A.
Provide SPD at designated electrical distribution equipment. SPD is also know as
Transient Voltage Surge Suppressor (TVSS).
B.
Install low-exposure SPD at each 208/120V panelboard.
C.
Service Entrances: Install medium-exposure SPD at each main panelboard/switchboard.
1.03
QUALITY ASSURANCE:
A.
New: Provide all new equipment.
B.
Single Manufacturer: All equipment of each type shall be the product of one
manufacturer.
C.
NEC: Equipment and installation shall comply with the National Electrical Code.
D.
UL 1449-98 (Third Edition): SPD shall be listed under UL Standard 1449 and named in
UL Electrical Construction Materials Directory category (XUHT). SPD shall also be UL
Classified in Accordance with IEEE C62.41-1991 and include the following statement in
the product listing mark--”ALSO CLASSIFIED IN ACCORDANCE WITH IEEE C62.411991 RECOMMENDED PRACTICE”.
E.
UL 1283: Standard for Safety for Electromagnetic Interference Filters.
F.
MIL-STD 220: 50
G.
NEMA LS-1: Low Voltage Surge Protective Devices.
1.04
A.
B.
insertion loss procedure.
SUBMITTALS:
Provide submittals according to Section 16050.
Product Data:
1. Item-by-item SPD specification review annotated to certify compliance or deviation.
2. SPD manufacturer catalog data marked to indicate exact model proposed.
SURGE PROTECTIVE DEVICES (SPD)
16280-1
3. Evidence of UL 1449 listing.
4. Submit proof of UL 1283 listing
5. NEMA LS-1 Data Sheet: Provide a Specification Format data sheet for each SPD.
Data sheet shall be per the Specification Format given in Appendix of the NEMA
standard.
6. UL-listed suppressed voltage ratings (SVR) in all modes.
7. Maximum Continuous Operating Voltage (MCOV).
8. SPD Maximum surge current.
9. Life cycle testing to prove number of hits SPD will survive at 10,000 Ampere C3
waveform.
10. SPD manufacturer product specifications.
12. Copy of manufacturer SPD warranty.
C.
Shop Drawings:
1. SPD manufacturer installation instructions and line drawings detailing dimensions
and weight of enclosure.
D.
Closeout Submittals: Provide manuals according to Section 16050.
PART 2 - PRODUCTS
2.01
A.
B.
2.02
A.
MANUFACTURERS:
Reference Electrical Riser diagram.
All SPD shall be furnished from the same manufacturer.
SYSTEM DESCRIPTION:
SPD Protection Modes:
1. The system shall protect in seven modes--three phases to neutral, three phases to
ground, and neutral to ground.
2. N-G mode not required for SPD installed at building main switchboard for electric
service entrance when that switchboard contains the Main Bonding Jumper of
neutral to ground.
B.
Maximum Continuous Operating Voltage (MCOV): The complete SPD assembly plus all
components in the suppression path shall have MCOV greater than 115% of the system
nominal Line-Neutral RMS voltage.
C.
MOVs shall be fused. Fuses shall be factory-installed inside the SPD enclosure. Each
module shall have a current-limiting fuse rated for 200,000 AIC in rejection fuse clips (or
physically non-interchangeable fuse). Modules shall have additional internal thermal
SURGE PROTECTIVE DEVICES (SPD)
16280-2
CITY OF EDGEWATER
FIRE STATION 55
50% CONSTRUCTION DOCUMENTS
June 14, 2010
fusing to protect all MOV failure modes.
D.
SPD shall have LED status indicator for each module. Indicator functions shall include
blown-fuse-indication (continuity check). Three external visible indicators shall serve as
summary indicators per phase. Indicators shall be visible on face of switchboard or on
face of SPD enclosure for units externally mounted.
E.
Warranty:
1. The manufacturer shall provide a Five Year Product Warranty.
2. Manufacturer shall identify local field service organization or state that product must
be shipped to factory for repair.
3. Identify warranty coverage for entire surge protection system or only the protection
modules.
4. If module must be replaced, state replacement policy is to replace all modules.
PART 3 - EXECUTION
3.01
A.
INSTALLATION:
Location:
1. General: TVSS/SPD products shall be installed on the load side of the electrical
service main breaker.
2. The system shall be connected in parallel with the facility's wiring system.
3. Circuit Breaker: Provide dedicated circuit breaker to be a disconnect and
overcurrent protective device for the SPD. Breaker shall be external to the SPD and
connected to protect both the SPD and the conductors feeding the SPD. Breaker
shall have fault current interrupting rating to match rating of panel or switchboard
assembly. Circuit breaker shall be three-pole, not combined single-pole breakers.
Minimum breaker ampacity shall be 30 Amperes; provide larger if recommended by
SPD manufacturer. Circuit breaker functions include protecting the tap conductors to
the SPD and disconnecting the SPD.
4. Panelboard: Parallel connection via branch circuit breaker. Provide a SPD closecoupled to the panelboard. Mount SPD on wall next to panel and join with conduit
nipple.
5. Switchboard: Parallel connection via feeder circuit breaker. Install SPD within the
switchboard enclosure but with indicators visible from the front, or SPD cover may be
cut into front of switchboard. Maintain deadfront enclosure of switchboard. Provide
deadfront hinged door in face of switchboard cubicle for access to all SPD module
and parts replacement. SPD shall be installed at the factory by the switchboard
manufacturer. Coordinate fabrication schedule of switchboard manufacturer and
component delivery schedule from SPD manufacturer.
B.
Wire Connection Leads:
SURGE PROTECTIVE DEVICES (SPD)
16280-3
1. Minimum wire size for leads to connect SPD shall be AWG #4--High Exposure,
AWG #8--Medium Exposure and AWG #10–Low Exposure. Wire shall be stranded
copper.
2. Keep length of leads as short as possible. Total lead length from lugs of circuit
breaker in switchboard/panelboard to SPD terminal lugs shall not exceed eight/two
feet. Install switchboard circuit breaker and SPD in same vertical section or
immediately adjacent in contiguous sections. Install panelboard breaker on side of
panel buss adjacent to external SPD. Position breaker up or down inside panel can
as close as possible to the SPD.
3. Trim and remove excess lead length, rather than coiling in series.
4. Twist all wires from each SPD into one twisted bundle, which will minimize mutual
inductance. Separate leads only to make terminal connections.
5. Avoid sharp bends in the connection leads.
C.
High Potential Testing Prohibited: Disconnect SPD from any conductors or equipment to
be tested by ac or dc high potential testing (hi-pot testing or Meggar™ testing). SPD are
not designed for and may not withstand high voltages applied for the duration of high
potential testing.
END OF SECTION
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16280-4