Electromagnetic Compatibility and Electrical Safety - Generic Criteria for Network Telecommunications Equipment
Document Number GR-1089
Issue Number 07
Issue Date Dec 2017
Replaces TA-NWT-001089 Issue02
Telecommunications service providers use GR-1089 to ensure that their telecommunications equipment meets the Electromagnetic
Compatibility (EMC) and electrical safety criteria necessary to perform safely and reliably. The NEBS criteria in this document covers
equipment in Central Offices (COs); equipment in the Outside Plant (OSP) at locations such as Controlled Environmental Vaults (CEVs),
Electronic Equipment Enclosures (EEEs), wireless applications and huts; equipment in uncontrolled structures such as cabinets; and
network equipment at the customer premises.
Telecommunications equipment, by nature of its application in the telecommunications network, may be exposed to one or more sources
of electromagnetic energy. The system-level generic criteria for EMC presented in this NEBS document are intended to help avoid
equipment damage and malfunction because of lightning, 60-Hz commercial power fault conditions, Electrostatic Discharge (ESD),
Electrical Fast Transient (EFT), Electromagnetic Interference (EMI), operation in the presence of a DC potential difference, and
operation in a steady-state induced voltage environment. Safe voltage levels for intentionally applied sources, electrochemical
corrosion effects, grounding, and DC powering are considered as well.
GR-1089 applies to wireless systems providing fixed services that are installed in locations with telecommunications network
equipment or information technology networking equipment. It also applies to equipment that is mounted outside the facility and whose
antennas are integrally mounted or mounted on the roof or on an antenna mast.
All sections of GR-1089 have been revised since Issue 6 was published in May 2011. The most extensive technical changes are listed
- The test methods in Section 2, "System-Level Electrostatic Discharge (ESD) and Electrical Fast Transient (EFT)," have been
updated for clarity.
- The test methods in Section 3, "Electromagnetic Interference (EMI)," have been updated for clarity. Radiated emissions limits have
been extended up to 40 GHz.
- The test methods in Section 4, "Lightning and Power Fault," have been updated for clarity.
- The safety criteria in Section 7, "Electrical and Optical Safety Criteria," have been updated.
- Appendix D, "Radiated Immunity in the millimeter Wave (mmW) Frequency Ranges - Informative Annex," is a new appendix that provides,
for informational purposes, a test procedure for mmW radiated immunity testing.
- Appendix E, "Section 4 First-Level Lightning Criteria Discussion," is a new appendix that discusses the rationale for the
requirements in Section 4.
GR-1089, Issue 7, is a companion document to GR-63, Issue 5, NEBS Requirements: Physical Protection.
Issue 7 of GR-1089 replaces Issue 6.
When using GR-1089, you may want to refer to these other related NEBS equipment protection requirements documents: GR-63,
SR-3580, GR-78, GR-357, GR-487, GR-2930, GR-3180, GR-3171, GR-3160, and various standards and industry
Components of this product are:
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