Types of electrical safety appliances:
1, the basic insulation safety appliances can withstand the operating voltage of electrical equipment for a long time, direct contact with the power supply. High voltage: insulated rod, insulated clamp, high voltage checker low voltage: insulated gloves, insulated handle, low voltage checker
2, auxiliary insulation safety equipment. Insulation strength is low, can not withstand long time electrical equipment operating voltage, not in direct contact with the power supply. High voltage: insulated boots, gloves and insulated mats, insulated table low voltage: insulated shoes, boots, insulated mats, insulated table with the basic insulating safety appliances work to strengthen its protective role. In the low-voltage energized equipment, can be used as basic insulation safety appliances.
1, insulated rod (insulated rod)
Working part of the metal hook.
Insulating part and grip part: made of painted hardwood, hard plastic, fiberglass, separated in the middle by a protective ring. Applications: operating high-voltage isolating switches, switching of falling fuses, installation and removal of temporary earthing wires, measuring and testing. With the corresponding voltage level of insulating boots, insulating gloves, insulating mats.
Precautions for the use of insulating rods:
(1) Before use, the voltage level of the insulating rods must be checked to see if it is the same as the voltage level of the electrical equipment being operated.
(2) When using the insulating rod, the staff should wear insulating gloves and insulating boots to strengthen the protection of the insulating rod.
(3) Insulation bars without umbrella covers should not be used in rainy, snowy or wet weather.
(4) Be careful to prevent collision when using insulating bars so as not to damage the surface insulation layer.
2, insulated pliers
Insulating materials: bakelite, glue wood, stained hardwood occasions: mounting and dismounting high-voltage fuse capacitor tube. With the corresponding voltage level of insulated boots, insulated gloves.
Insulation clamp use and storage, need to pay attention to:
(1) the use of insulation clamp is not allowed to install the ground wire.
(2) in wet weather can only use special rainproof insulation clamp.
(3) Insulated clamps should be kept in a special case to prevent moisture.
(4) insulated clamps should be tested regularly, the test method is the same as the insulating rod, the test cycle for one year, 10 ~ 35kv clamps experiments apply three times the line voltage, 220v clamps apply 400v voltage, 110v clamps apply 260 voltage.
3, insulated shoes, boots to prevent step voltage
Length more than 10cm wrist, ordinary or medical, chemical gloves and rubber boots can not be used instead of insulated gloves and insulated boots.
4, insulated mats, insulated station insulated mats (boards): made of rubber, laid around the power distribution unit to prevent contact voltage
and step voltage damage. Insulating carpet: laid in front of high and low voltage switchgear.
Insulated stand: the table is made of wooden strips with a spacing of less than 25mm, used for all electrical equipment indoors and outdoors.
5, the checker portable voltage indicator, divided into high-voltage, low-voltage checker two kinds.
Low-voltage checker (test pen): for 380/220v system, use, hand-held checker, with a finger touching the metal cover or the center screw, the metal tip of the pen and the charged part of the inspection contact, such as neon light indicates that the equipment charged, the brighter the light the higher the voltage.
High-voltage tester: generally made of 10kv and 35kv. With its working contacts close to or in contact with energized equipment, there is a capacitive current through the neon lamp, glowing indicates that the equipment is energized.
6, other electrical safety appliances
(1) ladder: made of wood or bamboo, divided into leaning ladder and ladder.
(2) foot buckles, boards (boards): divided into wood and cement pole foot buckles, the use of lace-up rubber shoes.
(3) safety belt: leather, chemical fiber materials. Big belt, small belt, insurance rope, buckle.
Extended information:
Daily inspection of electrical safety appliances
1, the inspection of safety insulating appliances should be in the effective test cycle, and qualified;
2, check the insulating rod of the checker is in good condition, there is no crack, Fracture, disconnection, according to the test button to check whether the luminous and sound checker is intact, whether the battery power is sufficient, whether the battery contact is intact, such as the case of intermittent, should immediately find out the reasons, can not be repaired should be replaced immediately, is strictly prohibited the use of unqualified checkers for power testing;
3, check the grounding wire grounding end, the conductor side of the end is intact, the grounding wire whether there is a fracture, the bolts are Tight, with insulating rod grounding wire, check the insulating rod without cracks, breaks, etc.;
4, check the insulating gloves without cracks, air leakage, the surface should be clean, no sticky phenomenon;
5, check the bottom of the insulating boots boots without cracks, no cracks in the boot surface and clean;
6, check the insulating rod without cracks, breaks;
7, check the Safety helmet without cracks, lacing intact.
Reference:
Baidu Encyclopedia-Safety Work Equipment