ACSR Grosbeak Conductor

636 Grosbeak ACSR - Aluminum Conductor Steel Reinforced

Allowable Ampacity for 636 GROSBEAK ACSR: 789 Amps

ACSR "Grosbeak" refers to a specific type of Aluminum Conductor Steel Reinforced (ACSR) cable, commonly used for overhead transmission and distribution lines. "Grosbeak" is a descriptive name, often used in North America to identify a particular strand configuration of the cable. It's a way to specify the combination of steel and aluminum wires within the cable. 

Here's a more detailed explanation:

ACSR:

ACSR is a type of cable where aluminum wires are stranded around a steel core. This design combines the high strength of steel with the excellent conductivity and low weight of aluminum. 

"Grosbeak":

In the ACSR world, "Grosbeak" is a specific designation for a particular strand configuration. It's one of the bird names used in North America to identify different ACSR conductor types, helping to distinguish them from each other. 

Strand Configuration:

The "Grosbeak" ACSR cable has a steel core surrounded by layers of aluminum wires. The number and arrangement of these wires, along with the size of the steel core, determine the cable's properties like strength, current carrying capacity, and flexibility. 

Usage:

ACSR cables, including "Grosbeak" variations, are widely used for overhead transmission and distribution of electricity. They are often chosen for their ability to handle long spans and the strength required for overhead lines.

ACSR Applications:

ACSR wire, or Aluminum Conductor Steel Reinforced cable, is an electrical cable mainly used for distribution services as well as bare overhead transmission, both primary and secondary, in various industrial settings, including construction. ACSR cable is especially suitable for line design due to its steel core strand, which increases the strength of the cable without sacrificing its ampacity, yet affects the ACSR wire price. The aluminum alloy conductor in ACSR wire prevents overheating and allows for extra flexibility of the electrical wire. 

636-26/7 ACSR/GA2 GROSBEAK Also Known As:

789 grosbeak steel reinforced cable, 789 grosbeak acsr wire, 789 grosbeak acsr cable, 789 grosbeak aluminum conductor steel reinforced, 789 grosbeak acsr aluminum conductor steel reinforced, 789 grosbeak all aluminum conductor, 789 grosbeak aluminum alloy cable, 789 grosbeak abrasive resistant cable, 789 grosbeak transmission overhead, 789 grosbeak overhead power line components.

ACSR Standards:

• B-230 Aluminum wire, 1350-H19 for Electrical Purposes 

• B-231 Aluminum conductors, concentric lay stranded 

• B-232 Aluminum conductors, concentric lay stranded, coated steel reinforced (ACSR) 

• B-341 Aluminum coated steel core wire for aluminum conductors, steel reinforced (ACSR/AZ) 

• B-498 Zinc coated steel core wire for aluminum conductors, steel reinforced (ACSR) 

• B-500 Metallic coat

ACSR Construction

Conductors:

ACSR (aluminum conductor steel reinforced) has a concentric steel core stranding conductor consisting of Aluminum Alloy 1350-H19 wires, available with Class A, B, or C galvanizing, aluminum coated (AZ), or with aluminum-clad steel core (AL). 

ACSR Grosbeak Specifications

• Size (AWG or KCM): 636.0

• Stranding (AL/STL): 26/7

• Diameter Inches: Aluminum: 0.1564

• Diameter Inches: Steel: 0.1216

• Diameter Inches: Steel Core: 0.3648

• Diameter Inches: Cable OD: 0.990

• Weight lb/1000FT: Aluminum: 499.9

• Weight lb/1000FT: Steel: 276.2

• Weight lb/1000FT: Total: 874.1

• Content %: Aluminum: 68.53

• Content %: Steel: 31.47

• Rate Breaking Strength (lbs.): 25,200

• OHMS/1000ft: DC at 20ºC: 0.0267

• OHMS/1000ft: AC at 75ºC: 0.033

• Ampacity: 789 Amps