CGAU 2/3.6-3.6/6kV Single-Core Vehicle Cable
CGAU 2/3.6 kV and 3.6/6 kV single-core cable with rubber insulation and CPE sheath, for track-bound vehicles, trolleybuses and buses.
- Conductor: annealed flexible copper to IEC 60228 class 5.
- Insulation: EPR compound type 3GI3.
- Sheath: CPE rubber type 5GM3, black.
- Range: 2.5 mm² to 16 mm².
- Bending radius: 3 × D fixed, 5 × D flexing.
Send vehicle type, route, duct dimensions and required voltage for RFQ review.
CGAU Single-Core Cable for Rail Vehicle and Bus Connections
CGAU is a single-core rubber-insulated and rubber-sheathed cable made in two ratings, 2/3.6 kV and 3.6/6 kV, for interconnecting wiring in locomotives, trolleybuses and similar track-bound vehicles. It is a small-section cable: the range runs from 2.5 mm² to 16 mm², and it is specified for protected routing inside pipes and closed installation ducts as well as for connecting moving parts.
The two voltages differ in insulation wall, not in conductor range. At 2/3.6 kV the wall is 1.8 to 2.0 mm; at 3.6/6 kV it is 3.0 to 3.2 mm, which takes the same 2.5 mm² conductor from a 9.0 mm to an 11.4 mm overall diameter. That difference decides whether a run will fit an existing duct, so the voltage has to be fixed before the route is measured.
- Rated voltages: 2/3.6 kV and 3.6/6 kV.
- Cross-sections: 2.5 mm² to 16 mm².
- Bending radius: 3 × D fixed, 5 × D flexing.
- Temperature: −40 °C minimum operating; +90 °C maximum conductor.
The CPE rubber sheath gives high resistance to weather, abrasion and oil. For 1.8/3 kV single-core switchgear and vehicle duty see NSGAFÖU, and for the halogen-free build see NSHXAFÖ.
CGAU Cable Construction
Three-layer single-core construction. The insulation compound is the only element that changes between the two voltage ratings.
| No. | Layer | Construction |
|---|---|---|
| 1 | Conductor | Flexible annealed copper conductor to IEC 60228 class 5 |
| 2 | Insulation | EPR compound type 3GI3 for CGAU 2/3.6 kV; medium-voltage compound for CGAU 3.6/6 kV |
| 3 | Sheath | CPE rubber type 5GM3, black |
Compound standards
Insulation and sheath compounds are specified to DIN VDE 0207: Part 20 for the 3GI3 insulation and Part 21 for the 5GM3 sheath. Fire propagation is classified to IEC 60332-1 and EN 50265-2-1.
CGAU Applications
CGAU is an interconnecting conductor for locomotives, trolleybuses and comparable vehicles, resistant to ageing, weather and abrasion, with increased resistance to oil. It is specified for fixed installation in track-bound vehicles and buses, in pipes and closed installation ducts, and for the connection of moving parts.
- Interconnecting wiring in locomotives and track-bound vehicles.
- Trolleybus and bus connections where oil and weather resistance are required.
- Runs inside pipes and closed installation ducts.
- Connection of moving parts within the 5 × D flexing radius.
Application boundaries
This is a small-section cable and the range stops at 16 mm². Fix the required voltage rating before ducts are measured: the insulation wall, and therefore the overall diameter, differ substantially between the two ratings, so the same conductor size will not occupy the same space.
Related single-core references
Compare NSGAFÖU 1.8/3 kV, NSHXAFÖ halogen-free and NTMCWOEU 26/45 kV railway cable for screened high-voltage vehicle connection.
Reference note: the designation is also written as CGAu 2/3,6 kV or CGAu 3,6/6 kV; comma and point decimal variants refer to the same product.
CGAU Specifications
| Rated voltage U₀/U | 2/3.6 kV and 3.6/6 kV |
|---|---|
| Conductor standard | IEC 60228 class 5, annealed copper |
| Compound standards | DIN VDE 0207 Part 20 (3GI3), Part 21 (5GM3) |
| Fire propagation class | IEC 60332-1 and EN 50265-2-1 |
| Minimum bending radius, fixed installation | 3 × D |
| Minimum bending radius, flexing | 5 × D |
| Minimum operating temperature | -40 °C |
| Maximum conductor temperature | +90 °C |
| Sheath colour | Black |
| Diameter notation | D = cable diameter |
CGAU 2/3.6 kV size table
| Code and cross-section | Nominal insulation thickness | Nominal sheath thickness | Overall diameter approx. | Weight approx. |
|---|---|---|---|---|
| CGAU 2/3.6 kV 2.5 mm² | 1.8 mm | 1.5 mm | 9.0 mm | 10 kg/100 m |
| CGAU 2/3.6 kV 4 mm² | 1.8 mm | 1.5 mm | 9.5 mm | 12 kg/100 m |
| CGAU 2/3.6 kV 6 mm² | 1.8 mm | 1.5 mm | 10.1 mm | 15 kg/100 m |
| CGAU 2/3.6 kV 10 mm² | 2.0 mm | 1.5 mm | 11.6 mm | 21 kg/100 m |
| CGAU 2/3.6 kV 16 mm² | 2.0 mm | 2.0 mm | 13.6 mm | 30 kg/100 m |
CGAU 3.6/6 kV size table
| Code and cross-section | Nominal insulation thickness | Nominal sheath thickness | Overall diameter approx. | Weight approx. |
|---|---|---|---|---|
| CGAU 3.6/6 kV 2.5 mm² | 3.0 mm | 1.5 mm | 11.4 mm | 16 kg/100 m |
| CGAU 3.6/6 kV 4 mm² | 3.0 mm | 1.5 mm | 11.9 mm | 18 kg/100 m |
| CGAU 3.6/6 kV 6 mm² | 3.0 mm | 1.5 mm | 12.5 mm | 21 kg/100 m |
| CGAU 3.6/6 kV 10 mm² | 3.2 mm | 2.0 mm | 15.0 mm | 30 kg/100 m |
| CGAU 3.6/6 kV 16 mm² | 3.2 mm | 2.0 mm | 16.0 mm | 38 kg/100 m |
Weights are stated per 100 m, as in the source data. Multiply by 10 for kg/km. All listed cross-sections in both voltages are available to order.
CGAU Standards, Approvals and Order Documentation
| Reference | Scope | Order confirmation |
|---|---|---|
| IEC 60228 | Class 5 annealed copper conductor | Conductor class is fixed at class 5. |
| DIN VDE 0207 Part 20 | 3GI3 EPR insulating compound | State the voltage rating so the correct wall is applied. |
| DIN VDE 0207 Part 21 | 5GM3 CPE sheathing compound | Sheath compound type is fixed at 5GM3. |
| IEC 60332-1 | Flame propagation for a single vertical cable | Classification applies to the cable as supplied. |
| EN 50265-2-1 | Flame propagation test method | Classification applies to the cable as supplied. |
Approvals
| Approval | Status |
|---|---|
| Flame propagation, IEC 60332-1 / EN 50265-2-1 | Held |
| EN 45545-2 rail vehicle fire performance | Held |
| Manufacturing conformity, DIN VDE 0207 Parts 20 and 21 | Held |
Order package
State the required voltage rating, cross-section and quantity, the vehicle type and installation route, duct or pipe internal dimensions, whether the run is fixed or connects a moving part, the low-temperature condition, and any project fire, marking or documentation scope.
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