48 Core OPGW Optical Ground Wire – NL-OPGW-48B1-90

The NetLast NL-OPGW-48B1-90 is a 48 core G.652 optical fiber composite overhead ground wire with two stainless-steel optical tubes, 118.0 kN rated tensile strength and 44.18 kA²s short-circuit capacity. It combines power-line grounding with reliable utility communications for overhead transmission networks.

NetLast NL-OPGW-48B1-90 48 core OPGW optical ground wire metallic structure

Description

48 Core OPGW Optical Ground Wire

The NL-OPGW-48B1-90 integrates 48 G.652 single-mode fibers in two stainless-steel optical tubes with aluminum-clad steel load-bearing wires. Installed in the overhead ground-wire position of high-voltage transmission lines, it supports lightning protection and fault-current transmission while providing a protected optical channel for utility communications, SCADA, teleprotection and grid monitoring.

Key Features

48 single-mode G.652 fibers in two stainless-steel tubes, 24 fibers per tube
Two-layer metallic construction with 20% aluminum-clad steel wires
118.0 kN rated tensile strength
92.68 mm² supporting cross section
44.18 kA²s short-circuit current capacity
13.20 mm nominal cable diameter and 661 kg/km nominal weight
Right-hand outer-layer Z-stranding
Designed according to DL/T 832 requirements

Technical Specifications

Parameter	Value
NetLast model	NL-OPGW-48B1-90
Cable type	OPGW-2S 2/24 (M93/R118-44)
Fiber count and type	48 × G.652 single-mode fiber
Center wire	1 × 20% ACS wire, 2.60 mm
Layer 1	4 × 20% ACS wire, 2.50 mm
Optical units	2 × SUS tube, 24 fibers per tube, 2.50 mm
Layer 2	11 × 20% ACS wire, 2.80 mm
Outer-layer stranding direction	Right-hand Z-stranding
Cable diameter	13.20 mm
Cable weight	661 kg/km
Supporting cross section	92.68 mm²
ACS / AA wire cross section	92.68 / 0.00 mm²
UTS / RTS pull-to-weight ratio	19.16 / 18.20 km
Ultimate tensile strength (UTS)	124.2 kN
Rated tensile strength (RTS)	118.0 kN
Modulus of elasticity	162.0 kN/mm²
Thermal elongation coefficient	13.0 × 10⁻⁶/°C
Maximum working stress (MAT, 40% RTS)	509.2 N/mm²
Everyday stress (EDS, 15%-25% RTS)	191.0-318.3 N/mm²
Strain margin stress (70% RTS)	891.1 N/mm²
DC resistance at 20°C	0.931 Ω/km
Short-circuit current (0.25 s, 40°C-200°C)	13.29 kA
Short-circuit current capacity (40°C-200°C)	44.18 kA²s
Minimum bending radius – installation	≥396 mm
Minimum bending radius – operation	≥264 mm
Installation tensile strength (≤20% RTS)	≤23.6 kN
Installation temperature	-10°C to +50°C
Transportation and operation temperature	-40°C to +80°C
Reference standard	DL/T 832

Applications

Overhead ground-wire systems on power transmission lines
Utility backbone communications and grid monitoring
SCADA, teleprotection and substation communications
New transmission-line construction and existing-line upgrades

Custom Engineering and Inquiry

OPGW selection is project-specific. Fiber count and type, metallic cross section, RTS, short-circuit capacity, cable diameter, unit length, applicable standard, fittings and packing can be engineered according to the transmission-line specification.

Send your required fiber count, fiber type, RTS, short-circuit capacity, supporting cross section, standard, project quantity and drum length to receive a technical proposal and quotation.