What’s E27 Bulb Base? The E27 Bulb Base feature high-strength insulator porcelain. Mounts on 4″ (101.6mm) outlet boxes with breakout for 3.25″ (82.55mm) box mounting. Pull chain socket interiors are removable. Pull chain devices include ball chain, 3′ (0.91m) of cord, connector and end bell. Top wire versions have terminal screws backed out — ready for wiring — without removing the interior. Sockets available in two piece version to permit interior replacement, dust ring protects against plaster and dirt. Shade grooves provided on two piece version.
Mechanical strength,Torsional torque
Perform the following torque test, the cap should be firmly bonded to the lamp body or the lamp used to precession or spin out the site:
B22d Bulb Base……………………….. 3 N · m
E27 Bulb Base………………………. 3 N · m
Torque should not be suddenly imposed, and should be gradually increased from zero to the specified value.
Not used for bonding of the lamp is fixed, the lamp cap and the lamp allows a relative movement between, but should not exceed 10 °. Mechanical strength test, the lamps shall conform to the requirements of electric shock prevention (see Chapter 6).
Cap temperature rise
In accordance with the QB / T 2512 Measuring finished lamp cap temperature rise △ ts when its temperature during the start of the lamp, stability and stabilization period of time after shall not exceed the following values:
B22d Bulb Base 125 K
E27 Bulb Base 120 K
The temperature rise and 60 W (maximum power) incandescent temperature rise the same as incandescent prevent overheating. Incandescent lamps heat resistance heat test source (HTS) lamps test.
All tests shall be conducted using the rated voltage. If the lamp voltage range marked only should be used the average of the voltage range of the test, but the voltage range of the upper and lower limit values ??of the difference between its average voltage should not exceed 2.5%. For a wide range of lamp voltage, the test is used when the highest value in its scope.
Porcelain lamp holders available for E27 Bulb Base (ES) .
These are particularly suitable in applications where high temperatures may be produced, by high bulb power or by operation in a confined space. Connection is by means of screw connectors and can be made from above or from two sides. Holes are provided for two mounting screws or adding mounting brackets, clamps, and plates.
Ceramic lamp holder / Porcelain Lamp socket
– E27 Bulb Base Used For E27 (27mm Diameter Screw In) Lamps
– Heat Lamps, Metal Halide Lamps, Sdium Lamps ETC With The Above Base
– 47mm Height x 42mm Diameter
– Suitable For Poultry Chicks, Pups, Lizards and all Types of Animals.
Type of firm: E27 Bulb Base China Manufacturer.
1. E27 Bulb Base
2. Material: Porcelain
3. Meet UL standard
4. Metal: Copper/Iron/Aluminium/stain steel, according to customers’ choice
5. OEM/ODM are available
6. Voltage: 250V
7. Electric current: 5A
8. Package: Paper packing and as your requirements
9. Payment: 30% T/T deposit, 70% balance against the copy of B/L. Or 100% irrevocable L/C at sight.
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