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Flexible Copper Stranded Wires from China Suppliers and Factory for Electrical Installation and Grounding Solutions
Technical Data
Annealed Cu-ETP wires, C11000, copper content ≥ 99.95%
Bare, Tin Plating
1.5mm² - 2000mm²
In rolls, on spools or wooden drums
Product Display
Type And Specification
Type |
Single Wire Diameter (mm) |
Single Wire Diameter (AWG) |
BGTJR 1 |
0.25mm-1.05mm |
AWG30-AWG18 |
BGTJR(X) 2 |
0.20mm |
AWG32 |
BGTJR(X) 3 |
0.15mm |
- |
Model And Meaning
Customization Upon Request
Part No. |
Nominal Cross Section (mm²) |
Calculating Cross Section (mm²) |
Structure |
Calculating Outside diameter (mm) |
Max. DC Resistance at 20℃ (Ω/km) |
Calculating weight (kg/km) |
||
Total Wire Number |
Strands×Wire Number Per Strand/Single Wire Diameter (mm) |
BGTJR 3 |
BGTJRX 3 |
|||||
BGTJR(X) 3-1.5 |
1.5 |
1.48 |
84 |
3×28/0.15 |
1.1 |
11.5 |
11.7 |
13.6 |
BGTJR(X) 3-2 |
2 |
2.01 |
114 |
3×38/0.15 |
1.9 |
9.24 |
9.39 |
18.7 |
BGTJR(X) 3-2.5 |
2.5 |
2.54 |
144 |
3×48/0.15 |
2.2 |
7.40 |
7.73 |
23.4 |
BGTJR(X) 3-4 |
4 |
4.02 |
228 |
4×57/0.15 |
2.8 |
4.62 |
4.82 |
37.4 |
BGTJR(X) 3-5 |
5 |
5.03 |
285 |
5×57/0.15 |
3.0 |
3.69 |
3.86 |
46.3 |
BGTJR(X) 3-6 |
6 |
6.05 |
343 |
7×49/0.15 |
3.5 |
2.97 |
3.10 |
55.6 |
BGTJR(X) 3-8 |
8 |
8.03 |
455 |
7×65/0.15 |
4.0 |
2.33 |
2.44 |
74.0 |
BGTJR(X) 3-10 |
10 |
10.01 |
567 |
7×81/0.15 |
4.6 |
1.85 |
1.93 |
92.1 |
BGTJR(X) 3-12 |
12 |
11.98 |
679 |
7×97/0.15 |
5.0 |
1.48 |
1.55 |
111.0 |
BGTJR(X) 3-16 |
16 |
15.94 |
903 |
7×3×43/0.15 |
6.0 |
1.16 |
1.21 |
151.0 |
BGTJR(X) 3-20 |
20 |
20.02 |
1134 |
7×3×54/0.15 |
6.8 |
0.925 |
0.965 |
191.5 |
BGTJR(X) 3-25 |
25 |
25.21 |
1428 |
7×3×68/0.15 |
7.7 |
0.736 |
0.769 |
242.5 |
BGTJR(X) 3-35 |
35 |
34.85 |
1974 |
7×3×94/0.15 |
9.0 |
0.535 |
0.559 |
335.9 |
BGTJR(X) 3-50 |
50 |
49.57 |
2888 |
12×3×78/0.15 |
11.0 |
0.374 |
0.391 |
483.1 |
BGTJR(X) 3-70 |
70 |
69.46 |
3933 |
19×3×69/0.15 |
13.2 |
0.262 |
0.274 |
678.4 |
BGTJR(X) 3-95 |
95 |
94.59 |
5358 |
19×3×94/0.15 |
15.5 |
0.196 |
0.205 |
934.4 |
BGTJR(X) 3-100 |
100 |
99.57 |
5640 |
20×3×94/0.15 |
15.8 |
0.183 |
0.191 |
979.9 |
BGTJR(X) 3-120 |
120 |
120.76 |
6840 |
19×4×90/0.15 |
16.8 |
0.153 |
0.160 |
1178.8 |
BGTJR(X) 3-150 |
150 |
150.15 |
8550 |
19×5×90/0.15 |
18.5 |
0.124 |
0.130 |
1449.3 |
BGTJR(X) 3-185 |
185 |
185.10 |
10488 |
18×7×81+3×94/0.15 |
21.5 |
0.0997 |
0.1040 |
1801.1 |
BGTJR(X) 3-200 |
200 |
200.20 |
11340 |
20×7×81/0.15 |
22.5 |
0.0940 |
0.0982 |
1945.4 |
BGTJR(X) 3-250 |
250 |
249.70 |
14147 |
20×7×97+7×81/0.15 |
25.0 |
0.0735 |
0.0768 |
2426.9 |
BGTJR(X) 3-315 |
315 |
310.41 |
17575 |
37×19×25/0.15 |
31.0 |
0.0592 |
0.0619 |
2897.6 |
BGTJR(X) 3-400 |
400 |
397.33 |
22496 |
37×19×32/0.15 |
34.0 |
0.0470 |
0.0491 |
3708.9 |
BGTJR(X) 3-500 |
500 |
496.66 |
28120 |
37×19×40/0.15 |
38.0 |
0.0366 |
0.0382 |
4636.1 |
Advantages
Flexible multi-strand structure reduces self-vibration and impact during momentary energization; connections stay tight.
Annealed Cu-ETP (≥99.95%) minimizes skin effect losses and ensures fast response.
Withstands repeated bending without fatigue failure.
Smaller bending radius than copper bars for the same cross-section, enabling flexible installation.
Flexible design eliminates cumulative tolerances, easy routing in irregular or cramped areas.
Avoids localized temperature rise caused by molecular lattice damage when cold-bending copper bars.
Operating & Maintenance
Temperature range: –40°C to +200°C (tin-plated)
Service life: 10-15 years under normal dry indoor conditions.
Inspection: Bare copper in humid environments-inspect every 6-12 months; tin-plated version requires minimal care.
Check terminal tightness annually in high-vibration applications.
Compliant with GB/T12970.2-2009, cross-sectional area 1.5-2000 mm².
Packing: rolls, spools or wooden drums.
Applications
Used for flexible conduction and grounding connections in electrical installations, switchgear, electric furnaces, storage batteries, etc. Widely applied in new energy “solar-storage-charging”, new energy vehicle drives, wind power generation, and more.
After-Sales
Free technical support, custom orders, 24-hour response. Contact Zhejiang Bridgold Copper Tech Co., Ltd.
Customization Upon Request
Zhejiang Bridgold Copper Tech Co., Ltd. is a professional leader China copper braid flat, copper braid wire, copper braid wire flat, copper braided wire, copper earth braid manufacturers and suppliers with high quality and low price. Welcome to contact us.
Frequently Asked Questions (FAQ)
What materials are used for flexible copper stranded wires?
Our flexible copper stranded wires are manufactured using high-grade annealed Cu-ETP (C11000) wires with a copper purity of ≥ 99.95%, guaranteeing maximum electrical conductivity and flexibility.
What finishes are available for these stranded wires?
We provide both bare copper and tin-plated copper options. Tin plating provides superior corrosion and oxidation resistance, suitable for operating temperatures from -40°C to +200°C.
What is the standard cross-sectional area range?
We offer a standard range from 1.5 mm² up to 2000 mm² compliant with GB/T12970.2-2009 standards, with custom dimensions available upon technical inquiry.
What are the primary applications of flexible copper stranded wire?
They are widely used in switchgear, electric furnaces, storage batteries, EV drive connections, solar-storage-charging systems, wind power generators, and wherever flexible conduction or earthing is needed.
How should these flexible copper wires be maintained?
For bare copper in humid conditions, inspect every 6-12 months. Tin-plated variants require minimal maintenance. In high-vibration environments, an annual terminal tightness inspection is recommended.
Can Zhejiang Bridgold provide custom stranded wire configurations?
Yes, Zhejiang Bridgold Copper Tech Co., Ltd. provides customized single wire diameters, strand configurations, packaging modes (rolls, spools, or wooden drums), and 24-hour technical support.