Solar

PV power plants > 50 kW

High availability of large PV systems

Solarpanels auf dem Land

In medium to large photovoltaic systems, safety and availability of the system and protection of the operating personnel is very important. Any electrical isolation and the peak performance of the system play a substantial role in the selection of suitable monitoring measures. In general, it is important to locate the fault quickly and automatically. 

Products:


Insulation monitoring

Measuring and monitoring relays

Insulation fault location


Standards:

  • DIN EN 60255-127
  • VDE-AR-N 4105
  • CEI 0-21
  • C10/11
  • BDEW
  • DIN V VDE V 0126-1-1
  • G83/2
  • G59/2
  • G59/3

PV power plants <= 50 kW

Electrical safety at home

Solarpanels auf einem Wohnhaus

In small photovoltaic systems, protection of the house residents and possible operators (fire brigade, chimney sweep) is very important. The inverters are mostly factory-equipped with the appropriate safety equipment. They are only safe enough if they can also detect symmetric faults caused by moisture and dirt. At the point of transfer between the internal network and the general power grid, the voltage and frequency must be checked at a predefined range.


Downloads:

PDF Download Symbol Product overview ISOMETER®
PDF Download Symbol Market segment brochure Renewable Energy
PDF Download Symbol Flyer Safe connection to the grid
PDF Download Symbol Specialist article Operating photovoltaic installations safely and efficiently

Products:

Insulation monitoring

Measuring and monitoring relays


Standards:

  • DIN EN 60255-127
  • DIN EN 61557-8

Network and system protection

Safe voltage and frequency levels

VMD460

Before internal generation systems (photovoltaics, water power, CHP, biogas, etc.) can feed electrical energy into the public grid, an automatic switching point must be installed between the generation system and the low voltage network. This checks whether the frequency and voltage fed in are within the specified range. The three-phase voltage monitoring relay is used to pre-configure numerous standard specifications at the touch of a button.


Downloads:

PDF Download Symbol Flyer Safe connection to the grid

Products:


Measuring and monitoring relais

 

Standards:

  • CEI 0-21
  • VDE-AR-N 4105
  • C10/11
  • BDEW-Richtlinie
  • DIN VDE 0126-1-1/A1
  • G59/2
  • G59/3
  • G83/2
  • G83/3
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