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5 years ago

Bender Renewable Energy

  • Text
  • Insulation
  • Monitoring
  • Photovoltaic
  • Electrical
  • Faults
  • Installation
  • Unearthed
  • Voltage
  • Availability
  • Residual


isoPV1685 ISOMETER ON PGH ON SERVICE ALARM 1 ALARM 2 ALARM 3 (I ) kΩ G Equipment for insulation fault location during operation Solutions for the installation Insulation fault location in expanded photovoltaic systems is a time-consuming and costly affair. Insulation faults in unearthed power supplies can be localised fast and reliably using the portable or permanently installed insulation fault location system EDS. Possible combinations Locating current injectors PGH and insulation fault locators EDS Locating current injectors PGH Insulation fault locators EDS The EDS system will pay for itself within a relatively short period by drastically reduced maintenance costs and by avoiding unneccessary costs as a result of operational interruptions. permanent EDS460 W20 GUARANTEED ELECTRICAL SAFETY isoPV1685 EDS195P EDS460-DG Insulation fault locator for automatic insulation fault location mobile PGH18x EDS195P Junction-Box Central inverter Trafo PV-Inverter MV String 1 String 2 C e C e EDS460 L+ L- EDS195P C e C e BMS bus EDS195P isoPV1685 R F2 R F1 8 Principle of a photovoltaic system with insulation monitoring and manual/automatic insulation fault location

G RCMU solutions for the integration in inverters Normative requirement On the DC side of photovoltaic systems the protective measure "double or reinforced installation" is preferably used (DIN VDE 0100-410). In this case, the solar modules are designed as protection class II equipment. Where this protective measure is used as a sole means of protection, appropriate monitoring of the installation concerned must be demonstrated. For this purpose, residual current monitoring unit (RCMU) acc. to DIN V VDE V 0126-1-1 and IEC 62109-2 are required for PV inverters without electrical separation. PV Array Transformerless Inverter C e RCMU R f DC+ Controller R f AC I ∆n L1 N PE RCMU in PV inverters without electrical separation AC/DC sensitive RCM technology The integrated RCM solutions from Bender ensure reliable and standard-compliant operation of inverters without electrical separation. Residual current monitoring is carried out using an internal AC/DC sensitive measuring current transformer. Optionally, the residual current is available as an output voltage proportional to the residual current at the signal output or as a temporally integrated signal in accordance with the requirements of DIN V VDE V 0126-1-1 and IEC 62109-2. All variations are completely screened and are therefore insensitive to load currents. Type GUARANTEED ELECTRICAL SAFETY RCM solutions by comparison RCMB100 RCMA126 Certifications UL 1998 UL 508 UL 508 Primary nominal current I n 50 A 50 A Measuring range I Δ 0…100 mA 0…100 mA Frequency range f DC…500 Hz DC…500 Hz Ausgang/Output V out Supply voltage U s Analogue output DC 0..5 V open collector output (temporally integrated signal) ± 12 V ± 15 V PWM signal f = 8 kHz (temporally integrated signal) 15 V ± 5 V 3.3 V Dimensions W/D/H 94 x 58 x 17 mm 65 x 50 x 17 mm 9