DL/T 5161.4-2018 in English

VALID

Specification for construction quality checkout and evaluation of electric equipment installation-Part 4:Bus bar installation

Issued on:2018-12-25
Implemented on:2019-05-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $430.00
$418.00

Standard No:	DL/T 5161.4-2018
Document status:	VALID
Title in English:	Specification for construction quality checkout and evaluation of electric equipment installation-Part 4:Bus bar installation
Title in Chinese:	电气装置安装工程质量检验及评定规程第4部分：母线装置施工质量检验
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2018-12-25
Implemented on:	2019-05-01
Superseding:	DL/T 5161.4-2002 Specification for construction quality checkout and evaluation of electric equipment installation Part 4:Bus bar installation
Professional Classification:	DL-Electricity
Related Keywords:	bus bar installation introduction core changes insulator installation bracket installation composite insulators installation procedures analysis construction quality checkout
Related Topics:	quality inspection Engineering Quality Xishuang Engineering Electrical Equipment Engineering electrical installation High-quality detector installation quality inspection Electrical installation works electrical installation Electrical installation works Regulations for Quality Inspection and Evaluation of Electrical Installation Engineering busbar installation Electrical Installation Engineering Quality Inspection Construction and acceptance of installation engineering of electrical installations in power distribution system Regulations for quality inspection and assessment of wind farm construction and installation Construction Quality Inspection and Evaluation Regulations for Yellow River Flood Control Projects PM2.5 calibration device General installation project quality acceptance specifications Quality acceptance and assessment of power substation projects Electrical installation installation engineering testing group Electrolyte strength in electrical devices Air volume measuring device inspection General installation engineering measurement

Introduction

Core changes in the standard revision

Revision dimensions	2002 version	New content in the 2018 version
Inspection items	7 categories of basic items	Added 9 items including Pipe mother welding test pieces and Groove treatment
Material technology	Conventional anti-corrosion treatment	Mandatory requirement Hot-dip galvanizing of outdoor metal components
Insulation technology	Traditional porcelain insulators	Newly added Composite insulators installation procedures

Analysis of key technical points

1. Support (hanger) bracket installation specifications

The straightness error of the entire length of the steel section is ≤5mm, and the diagonal error is ≤5mm. The bracket must be fixed with hot-dip galvanized bolts and the specified torque must be applied:

M12 bolts: 45-50N·m
M16 bolts: 80-90N·m

2. Key indicators for insulator installation

In a 500kV substation case,

Stage	Inspection content	Tools
Pre-installation	Busbar straightness, hardware matching	Laser leveler
Process control	Welding edge depth (≤0.1t)	Welding seam inspection ruler
Final acceptance	Phase distance deviation (≤5mm)	Infrared rangefinder

Implementation suggestions

Special requirements for the installation of tubular busbars:

Welded specimens must pass the tensile test (strength ≥85% of the parent material)

The installation spacing error of the damping wire is controlled within ±50mm

The cross-section of the expansion joint must be ≥1.2 times the cross-sectional area of the busbar

More samples: JGJ 94-2008 JJG 21-2008 GB 50021-2001(2009)

Sample only — not a preview of DL/T 5161.4-2018

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