IEC60238 Edison screw lampholders Test Solution

The IEC60238 standard is a standard developed by the International Electrotechnical Commission (IEC). Its full name is "Edison screw lampholders". This standard mainly stipulates the technical requirements and safety specifications for Edison screw - type lamp holders, and is applicable to lighting equipment in domestic, commercial, and industrial environments.

 

Scope of Application and Main Contents
The IEC60238 standard applies to Edison screw - type lamp holders of various sizes, including E14, E27, E40 and etc.. The standard covers requirements regarding the dimensions, electrical performance, mechanical strength, heat resistance, and fire resistance of lamp holders, ensuring their safety and reliability during use.

 

Testing Requirements
The testing requirements covered by this standard include:

1). Tolerance of marking dimensions to excessive residual stress (resistance to season cracking)

2). Rust resistance and moisture resistance

3). Insulation resistance and dielectric strength

4). Protection against electric shock

5). Mechanical strength

6). Earthing requirements

7). Terminal block structure

8). Screws for switch - type lamp holders

9). Heat resistance of current - carrying parts and connections

10). Fire resistance and protection against electric leakage

11). Tracking, creepage distance, and electrical clearance

 

By following the IEC60238 standard, manufacturers can ensure that their products meet international and European safety standards, thus gaining wider recognition and application in the global market. Below is a list of testing equipment corresponding to the clauses and figure numbers of IEC60238.

IEC60238 Clauses and figures	Corresponding testing equipment from Pego
Clause 9 Dimensions
9.1 Checking the minimum dimensions of screw thread and dimension X	Go and not go gauges for lampholders (7006-25, 7006-25A, 7006-26, 7006-30, 7006-31, 7006-30A, 7006-31, 7006-21, 7006-22A, 7006-23, 7006-24, 7006-22B)
9.2 Checking the contact making
9.5 Checking thread entries of lampholders (figures 2a and 2b)	Go and not go gauges for the screws and Nuts
9.7 detecting side-contacts with cutting-edges in lampholder	Go and not go gauge (7006-22B)
Clause 10 Protection against electric shock
10.1 determination of accessible parts of lampholders E5, E10, E14 and E27 (figure 16)	standard test finger (test probe B) Anti-accidental contact gauges (7006-31, 7006-22A, 7006-24)
10.2 determination of accessible parts of enlosed and independent lampholders	standard test finger (test probe B with 10N force) electrical indicator
10.3 Torque test (figure 13, figure 14, figure 15)	Test cap A and Test cap B for lampholders E14 (figure 13) Test cap for lampholders E27 (figure 14) Test cap for lampholders E40 (figure 15)
Clause 13 Construction
Clause 13.6 flexible cord	Cord Anchorage Pull Force and Torque Tester
14.3 Switches in lampholder	Switch endurance and breaking capacity testing machine
Clause 15 Moisture resistance, insulation resistance and electric strength
Clause 15.1 verify the enclosure of drip-proof lampholders against to water	IPX1/2 drip box test chamber
15.3 lampholders shall be proof against humid condition	temperature and humidity chamber
15.4 insulation resistance and electric strength test (figure 11)	insulation resistance tester test Caps E10, E14, E27, E40 (figure 11) withstand voltage tester
Clause 16 Mechanical strength
16.2 mechanical strength of the outer shell, the screw shell and dome (Figure 13, figure 14, figure 15)	Test cap A and Test cap B for lampholders E14 (figure 13) Test cap for lampholders E27 (figure 14) Test cap for lampholders E40 (figure 15)
16.5 strength of the connection between dome and threaded entry (figure 12)	bending apparatus
16.6 mechanical strength of the outer shell and screw shell of metal lampholders (figure 7)	Low energy pendulum hammer impact test apparatus Tumbling barrel
16.7 mechanical strength of external metal parts of metal lampholders (figure 9)	Pressure Apparatus for Metal Lampholders E14, E27 and E40
Clause 18 Creepage distances and clearances	Creepage distance caliper
Clause 19 Normal operation (figure 4, figure 5, Figure 13, figure 14, figure 15)	normal operation test apparatus test caps E14, E27, E40 (figure 4) Test cap A and Test cap B for lampholders E14 (figure 13) Test cap for lampholders E27 (figure 14) Test cap for lampholders E40 (figure 15)
Clause 20 General resistance to heat
20.2: For E27 lampholders	Gauge I for checking side contact resiliency in lampholders E27 (7006-22C) Gauge II for checking side contact resiliency in lampholders E27 (7006-22D)
For E14 lamphoders	Test cap A and Test cap B for lampholders E14 (figure 13) Heating cabinet
20.3 contact and all other current-carrying parts	test Caps E10, E14, E27, E40 (figure 11) Test cap A and Test cap B for lampholders E14 (figure 13) Test cap for lampholders E27 (figure 14) Test cap for lampholders E40 (figure 15)   Go gauge for lampholders E27 (7006-25A) Go gauge for screw threads of lampholders E10, E14, E40 (7006-25)
Clause 21 resistance to heat, fire and tracking
21.1 externail parts of lampholder shall resistance to heat (figure 10)	Ball pressure test apparatus heating cabinet
21.3 external parts of insulating material shall subject to the glow wire test	Glow wire tester
21.4 Parts of insulating material retaining live parts or ELV lamps in position are subjected to needle-flame test	needle-flame tester
21.5 For drip-proof lampholders, insluating parts retaining live parts or ELV parts in position shall be resistance to tracking index test	tracking index tester
Figures
Figure 2a - gauges for metric thread for nipples	go and not go gauges for screws and nuts
Figure 2b - gauges for ISO standard pipe thread for nipples
Figure 3 - gauge for holes for backplate lampholder screws	Customize
Figure 4 - normal operation test apparatus	Normal operation test apparatus
Figure 5 - Test Caps for test of clause 18	Test caps E14, E27, E40
Figure 6 - torque apparatus	Torque apparatus
Figure 7 - tumbling barrel	tumbling barrel
Figure 8 - impact test apparatus	Low energy pendulum hammer impact test apparatus
Figure 9 - pressure apparatus	Pressure Apparatus for Metal Lampholders E14, E27 and E40
Figure 10 - ball pressure test apparatus	Ball pressure test apparatus
Figure 11 - Test cap for the tests of clauses 15.4 and 20.3	test Caps E10, E14, E27, E40
Figure 12 - bending apparatus	bending apparatus
Figure 13 - test cap A and test cap B for lampholders E14	Test cap A and Test cap B for lampholders E14
Figure 14 - test cap for lampholders E27	Test cap for lampholders E27
Figure 15 - test cap for lampholders E40	Test cap for lampholders E40
Figure 16 - Standard test finger	test probe B