What is BS 633 - Requirements for cotton selvedge tapes and webbings about?
BS 633 specifies requirements and dimensions for the following classes of unbleached cotton tape and webbing with selvedge:
- Extra fine insulating tape
- Fine insulating tape
- Ordinary (or dynamo) tape
- Webbing
- Heavy webbing
The tape may be either scoured or unscored. Appropriate requirements are given for each variety.
Who is BS 633 - Requirements for cotton selvedge tapes and webbings for?
BS 633 on cotton selvedge tapes and webbingse is useful for:
- Electrical engineer
- Manufacturer of winding wire
- Manufacturer of transformer
- Manufacturer of heavy electrical equipment
- Manufacturer of electrical appliances
- Power Distribution companies
Why should you use BS 633 - Requirements for cotton selvedge tapes and webbings?
Cotton selvedge tapes and webbings are used for insulation and to tie wires down. They are widely used in transformers motor Winding, C.T Making, cable Insulation, conductor wrapping, connection wrapping.
It is important to select appropriate cotton selvedge tapes and webbings for the purpose. Else it may cause damage due to various reasons such as short circuits, loose connections, improper fitting. BS 633 provides guidelines and requirements for cotton selvedge tapes and webbings. BS 633 provides the follwoing specification to make selection and inspection standardises:
- Weave
- Width
- Kind and count of yarn
- Warp threads
- Weft threads
- Thickness
- Breaking load in warp direction
- Conductivity of aqueous extract of scoured tapes
- pH value of aqueous extract (optional test)
- Length of roll
BS 633 makes sure that all the terms are defined beforehand to make it understandable for the user.
