The insulating gloves are PPE frequently used by electricians as an auxiliary protection mean against electrocutions, in all LV, MV and HV electrical installations. The insulating gloves have the role of a barrier against passing the electrical current between the live conductor and earth, through the human body.
The insulating gloves are made of natural latex and have beside the electrical insulator properties also other protective characteristics against substances or media that can affect the human body:
A: acids resistance
H: oil resistance
Z: ozone resistance
M: high mechanical resistance
C: low temperatures resistance (-40°C)
R: sums up all the protective characteristics type A, H, Z, M
The insulating gloves are protective means that require periodical dielectric testing in order to check if there are maintained their insulating properties. The testing voltages are named withstand voltage * / test voltage ** and their values are established by specific standards, depending on the operational voltage. The tests must be made in special conditions, in specially authorized laboratories by RENAR.
* withstand voltage = specified voltage that a glove must support without any flashover, striking, punching or any other electrical effect when the voltage is applied under the conditions specified by the standard.
** test voltage = specified value of the voltage applied to a glove during a defined period of time, under specified standard, in order to verify if the electrical isolation level is greater than a given value.
Maximum operating voltage (V AC)
There are two types of insulating gloves for works in LV electrical installations (classes 00 and 0) and 2 classes of insulating gloves for works in MV electrical installations (classes 1 and 2).