Sidactor Protection Thyristor Products Page 32 SIDACtor Protection Thyristor Products

SIDACtor Protection Thyristors 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/23/17 In the United States, the telecommunication network is primarily operated by the Regional Bell Operating Companies (RBOC) who follow the standards set by the Generic Requirements (GR) document referred to as GR-1089-CORE, " Electromagnetic Compatibility and Electrical Safety - Generic Criteria for Network Telecommunications Equipment " . This GR document provides criteria for both EMC and electrical safety for equipment that is used in Central Offices (COs), Remote Terminals (RTs), Controlled Environmental Vaults (CEVs), Electronic Equipment Enclosures (EEEs), network equipment located at the customer premises, and other such locations. This document reflects the opinion of Telcordia and participating industry representatives. The criteria in this document are intended to insure safe and reliable operation of equipment during and after nearby lightning strikes, 60 Hz power fault conditions, Electrostatic Discharge events (ESD), Electrical Fast Transient events (EFTs), and Electromagnetic Interference events (EMI). These criteria apply to wireless systems installed in telecommunication network equipment locations. The following sections apply to specific interface ports of the equipment. Section 2 of GR-1089 addresses EFT. Section 3 addresses conducted emission & immunity criteria Section 4 addresses lightning and AC power fault Section 5 addresses steady-state power induction Section 6 addresses DC potential difference Section 8 addresses corrosion Section 10 addresses DC power port load equipment These interface ports could be coaxial cable, signal, telecommunication, antenna, and power. In this document, a telecommunication port includes paired conductor interfaces such as the tip and ring leads, sleeve leads, E & M leads, and 10/100/1000 BaseT ports (including PoE). Section 7, Electrical Safety Criteria , addresses the safety of personnel who have access to the equipment Section 9, Bonding and Grounding , describes the requirements for grounding systems The criteria for these standards are based on the assumption that a primary protector will limit transient voltages to 1000 V peak for surge conditions and 600 V rms for power fault conditions. All network equipment shall be listed by a Nationally Recognized Testing Laboratory (NRTL) if the equipment is directly powered by Commercial AC. Network equipment located on customer premises shall be listed by a NRTL. Equipment required to meet GR 1089 must be designed to pass: Both First and Second Level Lightning Surge and AC Power Fault Tests Current Limiter Test Short Circuit Test GR-1089 compliant products shall be manufactured in accordance with the applicable requirements contained in: Federal Communications Commission (FCC) {specifically FCC Part 68, Part 15, and TIA-968-A} National Electric Code (NEC) National Electrical Safety Code (NESC) Department of Labor - Occupational Safety and Health Administration (OSHA) And other applicable local requirements, including country (parish), state and federal law, regulations, and ordinances. In conjunction with primary voltage protectors, operating companies also may incorporate fuse links if there is the possibility of exposing the twisted pair to outside power lines. These fuse links are equivalent to 24- or 26-gauge copper wire and are coordinated with the current-carrying capacity of the voltage protector. The last element of protection that may be provided by the operating company are current limiters which, if provided, are found on the line side of the network equipment after the primary voltage protection device. These current limiters typically come in the form of heat coils and have a continuous rating of 350 mA. Changes to GR-1089 Changes to Section 4 of the GR 1089 in October 2002 now require conformance with additional definitions and tests: Ethernet (including 10BaseT, 100BaseT, and 1000BaseT) are considered telecommunications lines and GR 1089 requirements apply. The 2x10 surge is not used for systems having primary protectors mounted on the side of the enclosure or within the enclosure. It also is not used if the length of the conductors between the primary protector and the circuit pack is less than one meter if a metallic enclosure is used and all terminals are bonded to the enclosure and the longest dimension of the enclosure is less than three meters. The 600 V and 1000 V 100 A 10x1000 surge events voltage level may be reduced for CO equipment using solid state protectors. The secondary protector must coordinate with the primary protector OR have a 100 A 10x1000 rating. This requirement became effective January 2006; before that date it was only an objective. First level power fault adds a 440 V 2.2 A two-second test and a 600 V 3 A 1.1-second test. Second level testing allows the wiring simulator fuse to be either the MDL 2.0 A or the MDQ 1.6 A. The second level requirement is the same for either the CPE or non-CPE. Additional 15-minute test conditions of 3 A, 3.75 A, 5 A, 10 A, 12.5 A, 20 A, and 30 A conditions have been added. However, compliance with UL 60950 Annex NAC conditions 3, 4, and 5 are still accepted. The 2 A and 2.6 A tests are conducted without the simulator fuse in the circuit. However, it must meet applicable time-current curve. Regulatory Requirements (continued) GR-1089-CORE

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