BS 50286:2001 pdf download – Electrical insulating protective clothing for low-voltage installations
Electrical insulating protective clothing denotes a non-conductive protective clothing that prevents transmissionof electrical current to the wearer if it comes into contact with live conductors. Jacket with hood, trousers andoverall with hood are articles of the protective clothing.
The junction of two edges of material that are permanently joined by sewing or any other method.
A test performed on one or more articles of clothing made to a certain design to show that the design meetscertain ‘specifications [1EV 60151-04-15 mod.].
A test performed on a number of articles, of clothing taken at a random from a batch [1EV 60151-04-17 mod.J.
A test to which each article of clothing is subjected during or after manufacture to ascertain whether it complieswith certain criteria [1Ev 60151-04-16 mod.].
Acontractual test to prove to the customer that the article of clothing meets certain conditions of its specification[1EV 601 51-04-20 mod.].
3.3.5Proof test voltage
A specified voltage that is applied to an article of clothing for the time defined under specified conditions toassure that the electrical strength of the insulation is above a specified value.
4.1Non-electrical requirements4.1.1Weights, dimensions and design
No metal parts shall be on the outside of the protective clothing.Touch and close fastener shall be used.Theprotective clothing shall consist of a jacket with hood and trousers or an overall with a hood.
The weight of protective clothing shall comply with values given in Table 1.The manufacturing dimensions shallcomply with those given in Table l, which is based on EN 340. Other dimensions may be chosen in a similarmanner.
All seams, except hem-seams, shall be safe in the electrical environments.
The number of pockets in the protective clothing shall be limited to two.The protective suit shall have one pocketfor the jacket and one for the trousers.The protective overall shall have two pockets located in similar positions.
One pocket shall be placed at the chest level to the jacket or the overall. One pocket shall be placed laterally tothe thigh to the trousers. The pockets shall be equipped with flaps that shall have close and touch fasteners.
The hood shall be securely fastened to the jacket or overall. The method of fastening shall ensure that:
the hood cannot become separated or detached, either in part or completely, from the jacket or overallwhen the clothing is in use;
the integrity of the electrical insulation of the clothing is maintained both across and along the length of themeans of fastening, when the clothing is in use.
Examples of methods of fastening which meet these requirements are:
sewn seams which meet the requirements in accordance with 4.2;
zip-fasteners provided inside and outside with insulating flaps and touch and close fasteners that completelycover all parts of the zip-fastener.
The front edge of the hood shall be designed all around in such a way that a cord made from insulating materialcan be taken in. The cord shall be taken in the hood, but it shall not be fixed.
The hood shall be designed so that a protective helmet with face shield can be worn inside the hood.The cord ofthe hood shall allow the hood to fit closely to the protective helmet.
Any zip-fastener necessary to close the jacket, the trousers or the overall shall be made from insulating material.However, if metal parts are used for the slider or for the terminal pieces of the zip-fastener, they shall be coveredwith insulating material.
The length of the zip-fastener shall correspond to the design of the jacket.The length shall be designed in sucha way that the zip-fastener begins (10±2)cm above the hem seam and ends (3主 1) cm below the edge of thehood.The zip-fastener shall be covered by a flap that begins at the hem seam and ends at the hood seam.Theflap shall be equipped with a touch and close fastener, which covers at least the whole length of the zip-fastener.For the overall, the length of the zip-fastener and the design of the flap shall be chosen in a similar manner.
The cuff of the sleeves shall be adjustable by means of a tab with a touch and close fastener.
The bottoms of the trousers or overall legs shall be wide enough to be worn over footwear. The trousers shall beequipped with a fly that is closed over its length by a zip-fastener. The fiy shall be covered by a flap that shallhave a touch and close fastener over the whole length.
The trousers shall be equipped with braces that shall be securely connected to the trousers and shall beadjustable or elasticated. The elasticity may be achieved by a complete elastic brace or a piece of elastic in thebrace.
The colour shall be bright.
NOTE The protective clothing should have a unique colour. A red colour is recommended.This colour may differ fromcolour code marking-