IEC60598-2-20 clause 20.12.4 figure 2 Lighting Chains Pressure Test Device / Lampholder Contact Security Test Device
The lighting chains pressure test device is designed according to IEC60598-2-20 clause 20.12.4 figure 2 and GB7000.9 clause 11.3 figure 2. It’s applied for checking security of lampholder contacts in push-in lampholder of the lighting chains, to avoid the displacement of lampholder contacts due to friction, so that the live part of the lighting chains become accessible.
The lamps are removed and a force of 15N is applied for 1min to each of the conductors connected. Following this, a force of 30N is applied for 1min to the two conductors together. The forces are applied at a distance of 3mm±0.8mm from the insertion points in the lampholder so as to try to move the contacts from the lampholders. During the test the lampholder shall not move more than 0.8mm.
10N to 35N adjustable, realized by moving the weight to corresponding scale
Force required for single conductor connected: 15N
Force required for two conductors together: 30N
Force application point
3mm ±0.8mm from the insertion points in the lampholder
Iron plating hard chromium