A now-gone 115kV switch erected in the early 1980s; it originally split the single 115kV line into a loop, but the 115kV system was eventually arranged into a loop to and back from the WAPA substation on the northeast corner of Bismarck. By the time this picture was taken, the 41.6kV had been completely kicked off the bridge so that the north bays could be used to bring the 115kV over, and the last two 41.6kV circuits were made one and just run through the area (and eventually replaced by a permanent 'shoofly' line).
Today, two riser towers stand on this site; a third one is located on the other side for the other 115kV line, all to take the two 115kV and a new 41.6kV tie line through the belly of the new bridge.
115KV switch tower
This photo refers to our 115KV switch tower, which is one single circuit monopole and with surge arrestor on pole body. It originally split the single 115kV line into a loop, but the 115kV system was eventually arranged into a loop to and back from the WAPA substation
These 115KV double circuit single poles can be manufactured as one large piece, or as several small pieces which fit together. This type of pole often used in city power transmission grid, with little space, economic and lower cost. Now MEGATRO can produce distribution pole with some type as follow:
(1) Flange connection
(2) Slip joint
(3) Step type
(4) Stagger type
(5) Others
MEGATRO can optimize design, to set a compact, narrow base, the tower design not only advanced but practical, with an emphasis on economic rationality to ensure safe and reliable operation. Today, with over 10 years of experience and our commitment to excellence, MEGATRO remains an industry leader in the manufacture and design of steel tubular & monopole structures for all Highway, Municipal, Custom, telecom, lighting and electric Utility applications. MEGATRO has a complete staff of professional engineering personnel trained in the PLS Pole program and three different manufacturing processes for producing steel towers, poles and other supports. We utilize the latest versions of PLS-CADD, PLS-POLE, TOWER, AutoCAD and other CAD software.
MEGATRO is one of the few manufactures who assemble a face of 115KV single pole. This attention to quality may not be the cheapest process but it does insure every tower meets our high standards of quality. And it helps to reduce on-site construction cost due to mismatched assemblies. MEGATRO 115KV single poles systems can accommodate a variety of cross-arm and other accessories. After fabrication 115KV single poles are delivered to the galvanizing facility to be Hot DIP Galvanized. Towers are processed through the facility by Caustic Cleaning, Pickling, and then Fluxing. These strict procedures insure years of maintenance free towers. Even we take secondary finish for client again, which as duplex surface treatment.
Other information:
Availability size: Based on the customer's requirements.
Material: Chinese material or as per clients requirement
Package: Both parties discuss before delivery
Port of Loading: Qingdao Port
Lead Time: One month or based on the customer's needs
Minimum order: 1 TON
Fabrication standard: Chinese Standard or other standard which client accepted
Steel grades
POLE SHAFT: Chinese steel Q69B, which same to ASTM A572 GR50
Other webs, bracing and not stress plate and angle steel: Chinese Q235B, which same to ASTM A36
Plates: Chinese steel Q69B, which same to ASTM A572 GR50
Bolts: Chinese grade 6.8 and 8.8, which similar to ASTM A394
A) Dimension and tolerance for angle are according to GB/T1591-1994, similar to EN 10056-1/2
B) Hot dip galvanization in accordance with GB/T 13912-2002, which similar to ASTM A 123
C) The welding will be performance in accordance with AWS D1.1 or CWB standard
If any special requirement, we can design and discuss with client.
