Item nh-a

In addition to the requirements shown under the general listing procedures, the following information is required in a request for initial acceptance of gas tube surge arresters.

Product Description

The application should provide a description of the tube(s) which shall include the number of electrodes incorporated and the gas tube duty class for which the tube is to be considered (light, medium, heavy, or maximum duty).

Catalog designations associated with each gas tube type according to number of electrodes and duty class must be included in the application.

Conformance to Standards

Test data indicating that the gas tube arrester complies with the requirements specified in RUS Bulletin 345-83, "RUS Specification for Gas Tube Surge Arresters, PE-80." A copy of RUS Bulletin 345-83 can be downloaded at the following web address: http://www.usda.gov/rus/telecom/publications/bulletins.htm

Samples

The manufacturer shall submit a sample of each type of gas tube surge arrester for which the manufacturer is requesting RUS acceptance.

RUS Acceptance Process

Any RUS acceptance of gas tube arresters will be limited to an acknowledgement that, following RUS review and consideration, RUS has determined that a specific tube has been demonstrated to comply with RUS Bulletin 345-83(PE-80). RUS's written notice will specifically cite that its acceptance of the tube does not include acceptance and in fact, specifically excludes acceptance of the tube for use in any module, protector, or any device, unless and until RUS has reviewed and made specific acceptance determinations for the tube in such devices.

Item nh-b

In addition to the requirements shown under the general listing procedures, the following information is required in a request for initial acceptance of solid-state voltage arresters.

Product Description

The application should provide a description of the solid-state arresters(s) which shall include the number of terminals incorporated and the solid-state arrester class type for which the arrester is to be considered. RUS is only considering Class I solid-state arresters. (See PEG-7 for description of Class I.)

Catalog designations associated with each solid-state arrester type according to number of terminals and usage such as mainframe protection or building entrance protection.

Conformance to Standards

Item A: Solid-State Surge Arresters used in Mainframe Protectors

Test data indicating that the solid-state arresters comply with a nationally recognized standard such as the Alliance for Telecommunications Industry Solutions (ATIS)/Protection Engineers Group (PEG), PEG-7, "Specification for Solid-State Voltage Arresters on Metallic Line Telecommunications Circuits." Manufacturers shall submit test data demonstrating conformance to Paragraphs 5.0 thru 8.1 of ATIS/PEG-7. In addition to the Electrical Requirements specified in Section 5 of PEG-7, manufacturers shall provide test data indicating that the solid-state arrester module conforms to the Dielectric Strength requirement of Paragraph 6.1.3 Of PEG-3, "Specification for Telecommunications Main Distribution Frame Connectors/Arresters and Associated Arrester Modules." For conformance to Section 6 of PEG-7, manufacturers shall provide test data indicating compliance with the requirements specified in Paragraphs 7.5 and 7.6 of PEG-3. For conformance to Section 7 of PEG-7, manufacturers shall provide test data indicating compliance with the requirements specified in Paragraphs 8.1, 8.2, 8.3, and 8.4 of PEG-3. Any RUS "Accepted" mainframe protector block may be used for this test. Since the main target of information is the solid-state arrester module, disregard PEG-3 details pertaining to the protector block. If solid-state protectors under consideration are accepted by a recognized testing laboratory, photocopies of the reports and letters of approval of such laboratories shall be submitted with the application.

Item B: Solid-State Surge Arresters used in protected Building Entrance Terminals (BET)

Test data indicating that the solid-state arresters comply with a nationally recognized standard such as the Alliance for Telecommunications Industry Solutions (ATIS)/Protection Engineers Group (PEG), PEG-7, "Specification for Solid-State Voltage Arresters on Metallic Line Telecommunications Circuits." Manufacturers shall submit test data demonstrating conformance to Paragraphs 5.0 thru 8.1 of ATIS/PEG-7. In addition to the Electrical Requirements specified in Section 5 of PEG-7, manufacturers shall provide test data indicating that the solid-state arrester module conforms to the Dielectric Strength requirement of Paragraph 6.1.3 Of PEG-5, "Specification for Telecommunications Building Entrance Terminals and Associated Arrester Modules." For conformance to Section 6 of PEG-7, manufacturers shall provide test data indicating compliance with the requirements specified in Paragraphs 7.5 and 7.6 of PEG-5. For conformance to Section 7 of PEG-7, manufacturers shall provide test data indicating compliance with the requirements specified in Paragraphs 8.1, 8.2, 8.3, and 8.4 of PEG-5. Any RUS "Accepted" protected building entrance terminal may be used for this test. Since the main target of information is the solid-state arrester module, disregard PEG-5 details pertaining to the protected building entrance terminal. If solid-state protectors under consideration are accepted by a recognized testing laboratory, photocopies of the reports and letters of approval of such laboratories shall be submitted with the application.

Samples

The manufacturer shall submit a sample of each type of solid-state voltage arrester for which the manufacturer is requesting RUS acceptance.

RUS Acceptance Process

Any RUS acceptance of solid-state arresters will be limited to an acknowledgement that, following RUS review and consideration, RUS has determined that a specific solid-state arrester has been demonstrated to comply with "RUS Acceptance Procedures for Solid-State Voltage Arresters." RUS's written notice will specifically cite that its acceptance of the solid-state arrester does not include acceptance and in fact, specifically excludes acceptance of the solid-state arrester for use in any protected building entrance terminal, unless and until RUS has reviewed and made specific acceptance determinations for the solid-state arrester in such protected building entrance terminals.

For further information or clarification on the above acceptance procedures, please contact:

Norberto Esteves
norberto.esteves@usda.gov