Product overview
The SC-TTF7 temperature-rise test lampholder sleeve (nickel sleeve) is made to IEC 60360:2002 Figure 7 with an inside diameter of 15 mm. It clamps E14/23×15 lamp caps during lamp-cap temperature-rise measurement and reproduces the heat path of a standard lampholder, so that results from different laboratories remain comparable.
The sleeve is rolled from Japanese pure nickel sheet and slit longitudinally; a 316 stainless steel spring wire wrapped 1–1.5 turns around the sleeve holds the lamp cap by spring action. The surface is smooth, free from bending, waviness, indentations, inclusions and grease.
Standards
- IEC 60360:2002 – Lamp cap temperature rise, Figure 7 (inside diameter 15 mm)
- GB/T 24392-2009 – Method of measurement of lamp cap temperature rise
- QB/T 2512-2001 – Method of measurement of lamp cap temperature rise
Technical parameters
| Item | Specification |
|---|---|
| Model | SC-TTF7 |
| Lamp cap | E14/23×15 |
| Standard figure | IEC 60360 Figure 7 |
| Inside diameter | 15 mm |
| Nickel content | ≥ 99% (pure nickel imported from Japan) |
| Thickness | 0.5 mm ± 0.02 mm |
| Vickers hardness | HV 135 ± 15 |
| Spring material | 316 stainless steel spring wire, Φ0.8 mm, 1–1.5 turns around the sleeve |
| Surface | Smooth rolled cylinder, longitudinally slit, free from bending, waviness, indentations, inclusions and grease |
Construction and material
A single-layer nickel cylinder with a longitudinal slit; grain size not coarser than ASTM 8, slit width controlled as specified in IEC 60360 Figure 7 so that the sleeve expands and contracts freely on the cap. The 316 stainless steel spring wire provides a stable clamping force that changes little after repeated use.
How to use
- Select the sleeve that matches the lamp cap under test (E14/23×15 → SC-TTF7).
- Push the cap into the sleeve; the spring wire clamps it so that the sleeve wall sits against the cap.
- Mount the assembly in the test lampholder and fix the thermocouple as required by IEC 60360.
- Switch on and read the temperature rise after stabilization. Do not knock, flare or re-bend the sleeve during the test – this alters the clamping force and the heat path.
- Clean off grease after use and store separately to avoid deformation.
Standard drawing
Product photos
Related products
- IEC 60360 temperature-rise test lampholders – full series (12 figures in one table)
- SC-TTF3 – E14/20 temperature-rise test lampholder sleeve (IEC 60360 Figure 3)
- SC-TTF4 – E17/20 temperature-rise test lampholder sleeve (IEC 60360 Figure 4)
- SC-TTF5 – E26/26d/E27 temperature-rise test lampholder sleeve (IEC 60360 Figure 5)
- SC-TTF6 – E39/E40 temperature-rise test lampholder sleeve (IEC 60360 Figure 6)
- SC-TTF8 – E14/25×17 temperature-rise test lampholder sleeve (IEC 60360 Figure 8)
- SC-TTF9 – B22/25×26, B22d-3 temperature-rise test lampholder sleeve (IEC 60360 Figure 9)
- SC-TTF10 – B15d (skirtless) temperature-rise test lampholder sleeve (IEC 60360 Figure 10)
- SC-TTF11 – B15d/27×22 temperature-rise test lampholder sleeve (IEC 60360 Figure 11)
- SC-TTF12 – B15d/24×17 temperature-rise test lampholder sleeve (IEC 60360 Figure 12)
- SC-TTF13 – B22/B22d temperature-rise test lampholder sleeve (IEC 60360 Figure 13)
- SC-TTF14 – E12/15 temperature-rise test lampholder sleeve (IEC 60360 Figure 14)