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E27 Gauge for Testing Contact-Making and Protection Against Accidental Contact During Insertion of Lamps in Lampholders 7006-22A-5
The drawing is intended only to illustrate the dimensions essential for interchangeability.The drawings are intended only to illustrate the essential dimensions of the gauge.The drawings are intended only to illustrate the essential dimensions of the gauge.(1) Dimension E is the reference diameter associated with dimension S.
(2) Insulating material.
(3) Metal; conductive material.
(4) Spring steel 8 x 1.
(5) Metal test probe, 8 mm thick.
(6) E27 lamp caps may have centre contacts of 4,8 mm diameter. See sheet 7004-21.
PURPOSE: To check E27 lampholders in respect of:
a) Contact-making with lamps having adverse dimensions.
b) Protection against accidental contact with live parts, viz. the cap shell, during insertion of a lamp.
TESTING: The holder is connected in the test circuit as shown.
a) With switch A in position 2 and switch B open, the gauge is screwed fully home.
In this position, both lamps shall light.
b) With switch A in position 1 and switch B closed, the gauge is screwed in slowly until either of the lamps lights.
With the gauge held in this position, switch B is opened and the test probe at the side of the gauge is slid downwards as far as it will go into the space between the gauge and the holder.
In this position the lamps shall not light.
HK LEE HING INDUSTRY CO., LIMITED are specialized in manufacturing special, custom built, test and measuring equipment for products testing as per international norms and offering calibration services and related information. Our products and services are used by research & development establishments, test laboratories, defense establishments, government institutions & manufacturing industries to fulfill the clients' requirements.
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Add: 1F Junfeng Building, Gongle, Xixiang, Baoan District, Shenzhen, Guangdong, China