Sidactor Protection Thyristor Products Page 33 SIDACtor Protection Thyristor Products

SIDACtor Protection Thyristors 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/23/17 Reasons for GR-1089-CORE, Issue 3 Section 2, System-Level Electrostatic Discharge (ESD) Harmonize with the recent revisions to IEC 61000-4-2 (ESD), and IEC 61000-4-4. (EFT) Section 3, Electromagnetic Interference Add conducted emissions and immunity criteria at broadband frequencies Section 4, Lightning and AC Power Fault Resistibility Add a conditional requirement and objective regarding external current limiters in high- speed digital networks, add an objective to address coordination, change 1 st level power fault tests 6, 7, 8, and 9 from objectives to requirements, clarify the number of samples to be tested, clarify the number of ports to be tested, revise the criteria for customer premises 2 nd level power fault tests, clarify the test procedure for 1 st level tests and relocate all listing requirements to Section 7. Section 5, Steady-State Power Induction Add criteria for coaxial port immunity to steady- state power induction. Section 7, Electrical Safety Criteria Harmonize electrical safety terminology with international and North American telecommunications safety standards. Section 9, Bonding and Grounding Provide guidance on the application of the criteria to various types of network equipment add criteria for bonding, modify the short-circuit tests clarify the number of samples required to be tested, provide test procedures related to non-switching systems, clarify test procedures where necessary. Reasons for GR-1089-CORE, Issue 4 Include wireless systems criteria. Add a new definition appendix. Clarify criteria and test procedures. Section 1, Introduction Included guidelines for evaluation and added generic criteria. Section 2, System-Level Electrostatic Discharge (ESD) Extended date for objective to become a requirement, revised the ESD Warning Labels and established date for EFT objectives to become requirements. Section 3, Electromagnetic Interference Adopted the new FCC Part 15 requirements for ac power lines, revised the conducted emissions and immunity criteria for dc power ports and revised the conducted emissions and immunity criteria for broadband leads. Section 4, Lightning and AC Power Fault Resistibility Clarified procedures for calibration of generators, revised test conditions for equipment with 4-wire and multi-wire interfaces, changed the number of samples to be tested for second-level tests , added intra-building criteria for equipment with multi-wire interfaces, added intra-building criteria for equipment connected to shielded cables, communications and coaxial , revised second-level tests as applied to equipment with secondary protection , added surge testing methods for equipment that delivers power over communications wiring, revised the protection coordination tests, established new equipment port type for equipment located at remote sites, added a new subsection that provides appropriate criteria for equipment with agreed primary protection, added a new subsection that provides appropriate criteria for equipment with integrated primary protection, revised lightning criteria for equipment with ac power ports and added surge criteria for dc power ports for equipment located at OSP facilities. Section 7, Electrical Safety Criteria revised test procedure for classifying the source limits and revised the powering limitation criteria Section 9, Bonding and Grounding revised the grounding requirements of embedded power sources than 150 VA for specific applications. Section 10, DC Power Port of Telecom. Equipment revised the grounding requirements of embedded power sources than 150 VA for specific applications. that provides criteria on dc power ports of telecommunications equipment, which are powered from a shared dc power plant. Regulatory Requirements (continued)

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