|
Work item:
|
K.Suppl.31 to ITU-T K.118 (ex K.Suppl.31)
|
|
Subject/title:
|
Supplement 31 to ITU-T K-series RecommendationsITU-T K.118 - Requirements for lightning protection of fibre to the distribution point equipment - Modelling earth potential rise (EPR)
|
|
Status:
|
Agreed on 2022-10-27
|
|
Approval process:
|
Agreement
|
|
Type of work item:
|
Supplement
|
|
Version:
|
New
|
|
Equivalent number:
|
-
|
|
Timing:
|
-
|
|
Liaison:
|
ATIS, IEEE PES SPDC
|
|
Supporting members:
|
IEEE PES SPDC, ATIS NEP. NTT
|
|
Summary:
|
Since the publication of ITU-T Recommendation K.118, 2016, Requirements for lightning protection of fibre to the distribution point equipment, the system, often called G.fast (fast access to subscriber terminals) with RPF (reverse power feed), has had extensive deployment. This supplement provides an assessment earth potential rise (EPR) levels at the cabling link ends to the Distribution Point Unit (DPU) and the Customer Premises Equipment (CPE).
Electrical lightning stresses on the connected equipment at the link ends are considered to arise from the lightning disturbances on the CPE powering source, differential EPR (earth potential rise) of the link ends and possibly magnetic induction to the link cable. This supplement mainly concerns itself with the link end EPR values.
|
|
Comment:
|
-
|
|
Reference(s):
|
|
|
Historic references:
|
|
Contact(s):
|
|
| ITU-T A.5 justification(s): |
|
|
|
|
First registration in the WP:
2022-10-31 09:43:35
|
|
Last update:
2022-12-01 15:00:20
|
