• Model NO.: MGP-SB138
  • Accessories 1: Tower Fitting
  • Accessories 3: Anchor Bolts and Template
  • Accessories 5: Insulator
  • Accessories 7: Earthing Kits
  • Accessories 9: Aviation Light
  • Transport Package: Export Stnadard Package
  • Origin: Shandong, China
  • We Can Design It Pls or Tower Software: as Per Client Requirements
  • Accessories 2: Tower Foundation
  • Accessories 4: Conductor and Cable
  • Accessories 6: Earthing Wire and Opgw
  • Accessories 8: Lightning Rod
  • Trademark: MEGATRO
  • Specification: AS PER CLIENT
  • HS Code: 73082000
Megatro 138kv Switch Structure (MGP-SB138)

MEGATRO provide 138KV switch structures, which are used to switch generators, equipment, and circuits or lines in and out of a system, and including Gantries and Equipment Support Structures. Gantry structures are mainly used for guiding the power conductor from last tower near substation to the electrical equipments in a substation. This structure consists of a number of columns, angle steel bar and Girder beams, which depend on number of circuits of the line. Gantries are also used for line crossing. Power conductors of one line can be under-passed with the help of required number of gantries. Equipment Support Structures are columns, supporting electric equipments in a substation.
Depending upon the site and client's requirement, the Gantry and Equipment support structures can be mounted on substation building also.

MEGATRO manufacture them with complicated technology and adopted sophisticated production line.
Fabrication: Conform to client drawings and technical requirements
Place of Origin: Qingdao, Shandong, China.
Availability size: Based on the customer's requirements.
Material: Chinese material or as per clients requirements
Package: Both party discuss and agreed before delivery
Terms of Payment: L/C; T/T
Minimum Order Quantity: 1 set
Port of Loading: Qingdao Port
Lead Time: One month or based on the customer's needs.
Megatro 138kv Switch Structure (MGP-SB138)

APPLICABLE STANDARD AND CODES
All towers manufactured and design shall be generally in accordance with latest revision of the following standards except where specifically directed otherwise.
General
IEC 60826  - Design criteria of overhead lines
IEC 60652  - Loading tests on overhead line structures
ISO 1459   - Metallic coatings - Protection against corrosion by Hot Dip Galvanizing
ISO 1461   - Hot dip galvanized coatings on fabricated iron and steel articles
ISO 12944  - Paint coatings, corrosion protection, and structural steelwork
ISO 898-1   - Mechanical properties of fasteners. Part 1-Bolts, Screws and studs
ISO 630    - Structural Steels - plates, wide flats, bars, sections and profiles
ISO 657    - Hot rolled structural steel plates tolerances on dimensions and shape
ISO 7411  - Hexagon Bolts for high strength structural bolting with large width across flats
ISO 657-5   - Hot rolled Structural Steel Sections equal and unequal leg angles
ISO 7452   - Hot rolled structural steel plates tolerances on dimensions and shape
BS EN 50341-1 -Overhead electrical lines exceeding AC 45kV -General Requirements
BS 8004    - Code of Practice for Foundations
BS 8110    - Structural use of concrete
ANSI10-97   - Design of latticed steel transmission structures
IEC 60050 (151)                         International Electro-technical Vocabulary
                                       Part 51 Electrical and Magnetic Devices
IEC 60050 (601)                      Chapter 601: Generation, transmission and distribution of electricity-General
IEC 60050 (601)                    Chapter 601: Generation, transmission and distribution of electricity-Operation
IEC 60059                              IEC standard current ratings
Chinese Standard
No Code DESCRIPTION
1 GB/T2694-2003 Power Transmission line Steel tower - Technical requirements for manufacturing
2 JGJ81-2002 Technical specification for welding for steel structure of building
3 GB9787-88 Measuring and allowable tolerance for hot-rolled equal angle
4 GB709-88 Measuring and allowable tolerance for hot-rolled plate and strip
5 GB/T699-1999 Quality Carbon Structural Steel
6 GB/T1591-1994 Low alloy high strength structural Steel
7 GB700-88 Carbon Structural Steel
8 GB222-84 Method of sampling steel for determination of chemical composition and permissible variations
9 GB/T228-2002 Method for Tensile testing of metals
10 GB/T232-1999 Method for Bending test of metals
11 GB/T5117-1995 Carbon Welding Rod
12 GB/T5118-1995 Low Alloy Welding Rod
13 GB/T8110-1995 Welding wires for gas shielding arc welding of carbon and low alloy steels
14 GB/T10045-2001 Carbon steel flux cored electrodes for arc welding
15 JB/T7949-1999 Weld outer dimensions for steel construction
16 GB50205-2001 Test Standard for Acceptance of Steel Structure
17 GB/T470-1997 Zinc Ingot
18 GB3098.1-2000 Mechanical properties of fasteners-Part 1:Bolts, screws and studs
19 GB3098.2-2000 Mechanical properties of fasteners-Part2: Nuts, and thread
20 GB3098.3-2000 Mechanical properties of fasteners-Part3: Fastening screw
21 GB/T5780-2000 Helical Bolts Grade C
22 GB/T41-2000 Helical Nuts Grade C
23 GB/T90-2002 Flat Washer Grade C
24 GB/T13912-2002 Metal Coating, Technical Requirement and Test Method for Hot-dip galvanized Metal Parts

 
 
American Standards:
Standard Description
ASTM A6/A6M Standard specification for general requirements for rolled structural steel bars, plates, and sheet piling.
ASTM - 6    -  General Requirements for delivery of Rolled Steel Plates, Shapes, sheet Piling Bars for  structural used
ASTM A36/A36-M-97a Standard specification for Carbon structural steel
ASTM A123 / A123M-02 Standard specification for Zinc (Hot-Dip Galvanized) Coatings on iron and steel products
ASTM A143 / A143M-03 Standard Practise for Safeguarding Against Embitterment of Hot-Dip Galvanized Structural Steel Products and Procedure for Detecting Embitterment
ASTM A153/ A153M-05 Standard specification for zinc coating (Hot-Dip) on iron and steel hardware
ASTM A - 194  -   Grade for bolt
ASTM A239 Standard practice for locating the thinnest spot in a zinc (Galvanized) Coating on Iron or Steel Articles
ASTM A242 Standard specification for High-Strength Low-Alloy Structural steel
ASTM A307 Standard Specification for Carbon Steel Bolts and Studs, 60000 PSI Tensile strength
ASTM A370-06 Standard Test Methods and Definitions for Mechanical Testing of Steel Products
ASTM A325 Standard Specification for structural bolts, steel, Heat treated 120/105 ksi minimum tensile strength
ASTM A-325 or A-354  -  Galvanized hexagonal head of  connection bolt
ASTM A325-97 Standard Specification for High-strength Bolts for structural steel Joints
ASTM A384 / A384M-02 Standard Practise for Safeguarding Against Warpage and Distortion During Hot-Dip Galvanizing of Steel Assemblies.
ASTM A394-93 Standard Specification for steel Transmission Tower, Bolts, Zinc Coated and Bare
ASTMA - 563 -    Class and size of nuts
ASTMA - 572   - Chemical composition of steel
ASTM A572/A572-97c Standard specification for High-Strength Low-Alloy Columbium-Vanadium Structural steel
 ASTMA - 615  -   The anchor bolt material
ASTM A673 / A673M-07 Standard Specification for Sampling Procedure for Impact  Testing of Structural Steel
ASTM B201 Standard practice for testing Chromatic coating on Zinc and Cadmium surfaces
ASTM  E94-93 Standard Guide for Radiographic Testing
ASTM E 709-95 Standard Guide for Magnetic Particle Examination
ASCE Manual 72    -  Load testing a simple structure
ASCE 10-97 Standard Design of latticed steel transmission structures
AWS D1.1 American Welding Society D1,1/D1,1M structural Welding code- Steel
ANSI B-182-2 Bolts, nuts and washers dimensions
 
DIN VDE 0101                       -  Isokeraunic Level
VDE 0201                              - Climatic and environmental   conditions
CVDE 0210                           -  Minimum safety factors under    simultaneous working loads
ISO R898 Mechanical Properties of Fasteners
BS EN ISO 1461:1991 - High dip galvanized coatings on fabricated iron and steel articles. Specifications and standards
A) BS 5950: Welding Terms And Symbols
B) BS 729: Hot - Dip Galvanised Coating On Iron And Steel Articles
C) BS 2901: Filler Rods And Wires For Gas Shielded Arc Welding: Part 1 Ferritic Steels
D) BS 3692: ISO Metric Precision Hexagon Bolts, Screws And Nuts
E) BS 4360: Weldable Structural Steel
F ) BS 5135: Metal - Arc Welding Of Carbon And Carbon Manganese Steel
G) BS 5950: Part 1: Code Of Practice For Loading Latticed Tower & Masts
Part 2: Guide To The Background And Use Of Part 1"Code OF Practice For Loading"
Part 3: Strength Assessment of Members
H) DD 133 (1986): Code Of Practice For Loading Latticed Tower & Masts
I) BS 4592 (1987): Part 2: Specification For Expanded Metal Grating Panels
J) BS 4592 (1977): Code Of Practice For Protective Coating Of Iron And Steel Structure Against Corrosion
K) BS 4190: Bracing & Flanged Bolts
L) BS 4190: Rolled Steel sections, Flats & Plates
 
Moreover, we also can design tower foundation according to below standard:
BS 8004  - Code of Practice for Foundations
BS 8110  - Structural use of concrete
BS 4449  - Carbon steel bars for the reinforcement of concrete
If any special requirement, we can design and discuss with client.