entry threads Glands with no These products (formerly known as BW cable glands) are now referred to as sealing armour glands, and compliance with requirements is demonstrated by testing in accordance with the new edition of BS 6121 Part 1 (there is not an EN standard for these products). New and Old Standards Philosophy In one important respect the old and new standards are the same: Neither of them require third party certification. In both cases it is enough that the manufacturer certifies or declares that his products conform. In nearly every other way, the philosophy of the new standards differs from the old ones, as follows: New Standards Pre-2000 BS 6121 Standards Are performance and safety standards. The Was a construction and type test compliance EN plus amendment A1 is currently standard. harmonised under the Low Voltage Directive. (A1 is mandatory for compliance after 1/4/2003). Are written primarily for test house use, Was written in such a way as to be readily except for BS 6121 Part 5, so users need understandable by specifiers as well testers. only buy the new revision of BS 6121, Part 5. Are generally entitled "Cable Glands for Were generally entitled "Mechanical Cable Electrical Installations". Glands". Do not specify any named types of cable Specified distinct types of product (e.g. BW, glands. CW, E1W etc). Are not prescriptive about design (they are Specified dimensional properties (they were not blue-prints). blue-prints). Require classifications by manufacturer Required simply that the products met the (some being mandatory and some optional). tests specified in the standard. Some classifications have defined to represent levels of performance, whilst some simply specify a minimum and leave the manufacturer to declare a higher performance.
entry threads Glands with no sealing These products (formerly known as BW cable glands) are now referred to as armour glands, and compliance with requirements is demonstrated by testing in accordance with the new edition of BS 6121 Part 1 (there is not an EN standard for these products). New and Old Standards Philosophy In one important respect the old and new standards are the same: Neither of them require third party certification. In both cases it is enough that the manufacturer certifies or declares that his products conform. In nearly every other way, the philosophy of the new standards differs from the old ones, as follows: New Standards Pre-2000 BS 6121 Standards Are performance and safety standards. The EN plus amendment A1 is currently harmonised under the Low Voltage Directive. (A1 is mandatory for compliance after 1/4/2003). Was a construction and type test compliance standard. Are written primarily for test house use, except for BS 6121 Part 5, so users need only buy the new revision of BS 6121, Part 5. Was written in such a way as to be readily understandable by specifiers as well testers. Are generally entitled "Cable Glands for Electrical Installations". Were generally entitled "Mechanical Cable Glands". Do not specify any named types of cable glands. Specified distinct types of product (e.g. BW, CW, E1W etc). Are not prescriptive about design (they are not blue-prints). Specified dimensional properties (they were blue-prints). Require classifications by manufacturer (some being mandatory and some optional). Some classifications have defined to represent levels of performance, whilst some simply specify a minimum and leave the manufacturer to declare a higher performance. Required simply that the products met the tests specified in the standard.
gland_info9.docx