What are the signs and signs of electrical safety?

When repairing, setting up or installing electrical installations, it is very important to use special posters and electrical safety signs. They are designed to prohibit the implementation of actions related to turning on or off the devices, which in turn are used to supply / disable voltage. In simple words, all kinds of signs notify staff that work is underway in a certain area, therefore it is strictly forbidden to touch buttons, knife switches and automatic machines. In addition, posters and safety signs used in electrical installations can be used to inform that a person is approaching an object under voltage, or to indicate a workplace. In this article we will consider what types of posters and signs are in the electrician, where they are used and what requirements are presented to the places of their installation.

Content:

Prohibitory
Warning
Prescriptive
Pointing

Prohibitory

So, the prohibition signs and posters in electrical installations include the following:

"Dangerously! Electric field! Without protective equipment, passage is prohibited. ” This poster warns that in the approximate zone the possible dangerous action of the electric field is not excluded, therefore, without electrical protective equipment going further is prohibited. The installation location is an outdoor switchgear with a voltage of 330,000 volts and above. According to safety rules, it is installed at a height of 1.8 meters on the very fence of the zone, the electric field strength of which exceeds the mark of 15,000 volts per meter.
"Do not turn on. People work. ” It is installed on the keys and buttons that control the switching devices in order to prevent power supply. If there are no switching devices in the circuit and the voltage is up to 1 kV, the poster should be hung near the removed fuses. Scope - electrical installations up to 1000 Volts and above.
"Do not turn on. They work on the line. ” Purpose and place of installation, as in the previous poster. A scope - air and cable lines on which work is carried out.
“Work under stress. Do not re-enable. ” . Scope - keys that control overhead circuit breakers. This prohibitory poster must be hung up so that during repair work on the overhead line no one manually turns on the power. ”

This entire list of posters is prohibitive and is used in the electric power industry. We draw your attention to the fact that the products can be portable and stationary (installed 1 time). An important requirement is to make safety signs and posters from electrical insulating materials. Metal plates may only be used if they are permanent and are at a sufficient distance, as required, from elements that may be energized.

Warning

Warning signs and posters are used to inform a person about approaching a site that is under voltage.This type of safety label includes:

“Do not fit! Kill. " Warns a person that when lifting, it is possible to approach elements that are under dangerous voltage.
"Test! Danger to life. ”Such a poster must be hung out at the workplace when testing high voltage equipment. Place of installation - the fence of this workplace. The signature warns that there is a possibility of electric shock.
“Wait! Voltage". Surely each of you saw this poster on electrical installations and understands what it warns about.
"Caution! Electrical voltage. " The safety sign is made in the form of a triangle having equal sides. It is used for installation on the doors of substations, power plants and electrical installations, as shown in the photo below.

Prescriptive

This type of posters and safety signs is intended to indicate the location of the place of work in electrical installations, as well as a safe approach to it. The kit includes:

"Work here" - everything is simple, a poster is used to indicate the workplace of staff.
“Climb here” is intended to inform a person about how to safely climb to a height for work. Typically placed on stairs.

Pointing

The only indicative poster is “Earthed”, which indicates that the electrical installation is grounded and voltage is not allowed to be supplied to it. Place of installation - switching device drive. If the prohibition and sign plates are used at the same time, the latter must necessarily be hung in the foreground.

So we provided the posters and safety signs used in electrical installations. We draw your attention to the fact that it is allowed to increase the size of the plates when they are installed on large equipment. In this case, the increase must be performed in the ratio of 2: 1, 4: 1 or even 6: 1. You can get additional information about sizes in SO 153-34.03.603-2003. We hope that now you know what types of posters and signs in electrics are divided into, and what conditions of use for each classification.

Finally, we recommend watching a video that tells about all the safety signs: