SECTION [26 43 13.50] [16289]
TRANSIENT-VOLTAGE SUPPRESSION
FOR LOW-VOLTAGE ELECTRICAL POWER CIRCUITS
PART 1 - GENERAL
1.1SCOPE
A.This section describes the materials and installation requirements for surge protective devices (SPD) for the protection of all AC electrical circuits.
1.2RELATED DOCUMENTS
A.Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.
B.Other sections that may relate to the work in this section include, but are not limited to, the following:
1.[Section [26 24 13] [16441]–[Integrated] Switchboards
2.Section [26 24 16] [16442] - Panelboards
3.Section [26 25 00] [16450] – Busway]
1.3SUBMITTALS
A.Submit shop drawings and product information for approval and final documentation in the quantities listed according to the Conditions of the Contract. All transmittals shall be identified by customer name, customer location, and customer order number.
1.4RELATED STANDARDS
A.The SPD’S shall be manufactured and tested according to the latest applicable standards of the following agencies:
1.IEEE C62.41.1, IEEE Guide on the Surge Environment in Low-Voltage (1000 V and Less) AC Power Circuits,
2.IEEE C62.41.2, IEEE Recommended Practice on Characterization of Surges in Low-Voltage (1000 V and Less) AC Power Circuits,
3.IEEE C62.45, IEEE Recommended Practice on Surge Testing for Equipment Connected to Low-Voltage (1000 V and Less) AC Power Circuits.
4.FIPS Pub 94 (1983) - Guide on Electrical Power for ADP Installation
5.National Electric Code - Article 285
6.National Fire Protection Association - NFPA-20, NFPA-70, NFPA-75, NFPA-78
7.UL 1283 - Electromagnetic Interference Filters
8.UL 1449 Second Edition Revision Effective Feb 9, 2007- Transient Voltage Surge Suppressors
1.5QUALITY ASSURANCE
A.Manufacturer Qualifications: Engage a firm with at least 5 years experience in manufacturing transient voltage surge suppressors.
1.6DELIVERY, STORAGE AND HANDLING
A.Handle and store equipment in accordance with manufacturer’s Installation and Maintenance Manuals. One (1) copy of this document to be provided with the equipment at time of shipment.
PART 2 - PRODUCT
2.1MANUFACTURERS
A.[Provide an externally mounted transient voltage suppressors by Siemens or pre-approved equal. Approved manufacturers are as follows:
1.SIEMENS
2.. ]
2.2SURGE SUPPRESSOR
A.Surge Suppressor
1.SPD shall be UL 1449 Second Edition Revision Effective Feb 9, 2007tested and listed to 200kA Short Circuit Current Rating (SCCR) in compliance with NEC 285.6.
2.SPD shall provide surge current diversion paths for all modes of protection; L-N, L-G, N-G in WYE systems, and L-L, L-G in DELTA systems.
3.SPD for service entrance applications shall be modular in design. Each mode including N-G shall be fused with a 200kAIR UL recognized surge rated fuse and incorporate a thermal cutout device.
4.Service entrance SPD shall provide audible diagnostic monitoring by way of audible alarm. This alarm shall activate upon a fault condition. An alarm on/off switch shall be provided to silence the alarm. An alarm push to test switch shall be provided.
5.If a dedicated breaker for the SPD is not provided in the switchboard, the service entrance SPD shall include an integral UL Recognized disconnect switch. A dedicated breaker shall serve as a means of disconnect for distribution SPD’s.
6.SPD shall meet or exceed the following criteria:
a.Minimum surge current capability (single pulse rated) per phase shall be:
1.)Service entrance applications: 240kA per phase
2.)Distribution applications: 80kA per phase
b.UL 1449 Listed Suppression Voltage Ratings for service entrance shall not exceed the following:
VOLTAGE / L-N / L-G / N-G / MCOV208Y/120V / 400V / 400V / 400V / 150V
480Y/277V / 700V / 700V / 700V / 320V
c.(With service entrance Internal Disconnect Switch 400V and 700V respectively.)
d.UL 1449 Listed Suppression Voltage Ratings for distribution shall not exceed the following:
VOLTAGE / L-N / L-G / N-G / MCOV208Y/120V / 330V / 330V / 330V / 150V
480Y/277V / 700V / 700V / 700V / 320V
7.SPD shall have a minimum EMI/RFI filtering of –50dB at 100kHz with an insertion ratio of 50:1 using MIL-STD-220B methodology.
8.SPD shall be provided with one set of NO/NC dry contacts.
9.SPD shall have a warranty for a period of five years, incorporating unlimited replacements of suppressor parts if they are destroyed by transients during the warranty period.
2.3SERVICE ENTRANCE
A.One primary suppressor shall be installed external to the service entrance in accordance with manufacturer instructions.
B.The SPD shall be installed on the load side.
C.The SPD ground shall be bonded to the service entrance ground.
D.The SPD shall be similar to Siemens TPS12240 for service entrance
2.4DISTRIBUTION PANELBOARDS
A.One suppressor shall be installed external to each designated distribution panelboard.
B.The surge suppression device shall be installed in accordance with manufacturer instructions.
C.The SPD shall be similar to Siemens TPS11080 for distribution.
PART 3 - EXECUTION
3.1INSTALLATION
A.Install per manufacturer’s recommendations and contract documents.
B.Install units plumb, level and rigid without distortion
3.2ADJUSTMENTS AND CLEANING
A.Remove debris from SPD and wipe dust and dirt from all components.
B.Repaint marred and scratched surfaces with touch up paint to match original finish.
3.3TESTING
A.Check tightness of all accessible mechanical and electrical connections to assure they are torqued to the minimum acceptable manufacture’s recommendations.
B.Check all installed panels for proper grounding, fastening and alignment.
3.4WARRANTY
A.Equipment manufacturer warrants that all goods supplied are free of non-conformities in workmanship and materials for five (5) years from date of shipment.
END OF SECTION
October 9, 2018[Project Name]
Transient-Voltage Suppression for Low-Voltage Electrical Power Circuits
[26 43 13.50] [16289]-1