Recently, more thunderstorms, local areas are heavy rain! So that micro-circle, circle of friends, all kinds of 'see the sea' picture and video crazy pass. But there is no lack of rain and other related video appears, so that the audience looked creepy!
As a photovoltaic practitioner, Xiaobian subconsciously associated with perennial in the photovoltaic power plant front line of the safety of employees. So when the photovoltaic power plant operations, front-line staff how to avoid electric shock?
First of all, the more insurance program, in case of wind, heavy rain, heavy snow, fog and other extreme weather, should immediately stop outdoor operations. Rush hours, the weather is fine, can work overtime. In addition, the following four major issues need to be noted:
First, the construction sites, need to choose a qualified professional construction personnel to install the PV project.
Second, before installation, the construction staff dress code and anti-shock measures:
1, wear insulated shoes, with low pressure insulated gloves, the use of insulation tools;
2, in the construction site near the installation of photovoltaic systems, with the protection box to isolate the installation location over the overhead lines;
3, heavy rain, heavy snow, windy days to stop operations.
4, rain and snow days is strictly prohibited component cable work.
(Note: PV modules produce light in the light, with the increase in light and enhanced, so touch the electronic circuit components will be subject to electric shock or burn risk, 30 volts or higher DC voltage may even be fatal.
Third, the installation of photovoltaic components, the need to pay attention to the following 6 points:
1, cut off the power of the PV module, you can move them to a completely no light environment, or use opaque material to cover the surface of the component. If you want to operate the components in the sun, be sure to use insulation tools, and do not wear metal jewelry.
2, can not be in the case of a load disconnect the electrical connection, to prevent the risk of arcing and electric shock. Make sure that the connected lines and the way are correct because the wrong connection method also causes the arc and electric shock.
3, keep the plug dry and clean, to ensure that they are in good working condition. Do not insert other metal objects into the plug, or in any other way to make electrical connections.
4, do not touch or operate the glass components broken, the frame is off and the backplane is damaged, unless the component is disconnected from the electrical connection and is wearing personal protective equipment.
5, do not touch the wet PV modules; in the clean PV module (PV components at this time wet), you need to follow the requirements of the PV module cleaning manual operation. When you do not wear personal protective equipment or rubber gloves, you can not touch the wet plug.
6, component borders and other non-conductive metal fixtures, be sure to connect the grounding device to prevent electric shock. Route all PV module borders to ensure that the voltage between the ground and the conductive device is 0V in any case.
Fourth, the photovoltaic part of the electrical installation of the need to pay attention to 5 points:
1, electrical equipment in the start and stop, its terminal and cable will produce voltage, therefore, once again stressed that must be qualified by qualified technical staff to install.
2, select the right, correct, standard cable products. All cables connected to the inverter, riser box and distribution box must be suitable for system voltage, current and environmental conditions (temperature, UV).
3, pay attention to the installation of the line. In the connection process, pay attention to all the cable traction and connection is correct.
4, must ensure a good grounding connection, so as to avoid the voltage.
5, the installation of attention to the order of breaking the voltage. Disconnect the AC or DC voltage sequence: Disconnect the AC voltage first and then turn off the DC voltage.
FOLLOW US
WeChat
Sina
