Flame Tests for Electrical Cables
IEC 60332-1 & IEC 60332-2-2
| Description | IEC 60332-1-2 acc. to VDE 0482-332-1-2 |
IEC 60332-2-2 acc. to VDE 0482-332-2-2 |
| Tests for vertical flame propagation for a single insulated wire or cable - procedure for 1-kW pre-mixed flame | Tests for vertical flame propagation for a single insulated wire or cable - procedure for diffusion flame | |
| Length of specimen | 23.62 in. (600 mm) | 23.62 in. (600 mm) |
| Burner | acc. to IEC 60332-1-1 | acc. to IEC 60332-2-1 |
| Test temperature | 1 kW flame | defined by the stipulated setting of the flame length |
| Position of specimen | vertical | vertical |
| Position of flame | 45° to vertical specimen | 45° to vertical specimen |
| Duration of flame | see table 1 | 20 seconds |
| Conditions | The cable must be self-extinguishing. The damage or carbonization must not exceed 50 mm beneath the upper fixing clamp. Additionally, to pass the test, the distance from the uppermost point of carbonization above the flame source to the lowest point of carbonization below the flame source must not exceed 425 mm. If carbonization extends more than 540 mm downward from the lower edge of the upper fixing clamp, an additional fault must be recorded. | The cable must be self-extinguishing. Damage or carbonization must not exceed 50 mm beneath the upper fixing clamp. If carbonization extends more than 540 mm downward from the lower end of the upper fixing, an additional fault must be documented. |
| IEC 60332-1-2 Test Setup | IEC 60332-2-2 Test Setup |
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Table 1
| Outer diameter* of specimen in mm | No. of wires x diameter of wires in mm Ø |
| D ≤ 25 | 60 |
| 25 mm < D ≤ 50 | 120 |
| 50 mm < D ≤ 75 | 240 |
| D > 75 mm | 480 |
| For cables or insulated cables that are not round (e.g., flat twin cables), their dimensions must be measured, and an equivalent diameter must be calculated. | |