ISOMETER® isoPV with AGH-PV

Ground-fault monitoring device for AC and DC IT systems
Application photovoltaic systems up to AC 793 V/DC 1100 V
Separately adjustable response values 200 Ω…100 kΩ
Automatic adaptation to the system leakage capacitance up to 2000 μF
Isometer disconnecting relay for the operation of several ISOMETER® in interconnected IT systems

The ISOMETER® of the isoPV series is designed to monitor the insulation resistance of ungrounded main circuits (IT systems) AC, AC/DC 0…793 V resp. DC 0…1100 V. Solar systems containing inverters and isolating transformers are often designed as IT systems. iso-PV variants using the AMP^Plus measurement method capable of adapting to slow voltage fluctuations meet the particular requirements of modern solar systems. Due to wide spatial distribution or EMC interference suppression methods often high leakage capacitances against ground occur in these systems. Considering this, the isoPV automatically adapts to the system conditions in order to optimize the measuring time. In particular, the requirements for permissible voltage ranges along with a low level of insulation can be met here. Use the ISOMETER® isoPV in combination with the AGH-PV only. An external supply voltage allows de-energized systems to be monitored too.

Questions? Contact us!

Ground-fault monitoring device for AC and DC IT systems
Application photovoltaic systems up to AC 793 V/DC 1100 V
Separately adjustable response values 200 Ω…100 kΩ
Automatic adaptation to the system leakage capacitance up to 2000 μF
Isometer disconnecting relay for the operation of several ISOMETER® in interconnected IT systems

The ISOMETER® of the isoPV series is designed to monitor the insulation resistance of ungrounded main circuits (IT systems) AC, AC/DC 0…793 V resp. DC 0…1100 V. Solar systems containing inverters and isolating transformers are often designed as IT systems. iso-PV variants using the AMP^Plus measurement method capable of adapting to slow voltage fluctuations meet the particular requirements of modern solar systems. Due to wide spatial distribution or EMC interference suppression methods often high leakage capacitances against ground occur in these systems. Considering this, the isoPV automatically adapts to the system conditions in order to optimize the measuring time. In particular, the requirements for permissible voltage ranges along with a low level of insulation can be met here. Use the ISOMETER® isoPV in combination with the AGH-PV only. An external supply voltage allows de-energized systems to be monitored too.

Questions? Contact us!

Features

Insulation monitoring for unearthed systems AC, AC / DC 0…793 V, DC 0…1100 V
Two separately adjustable response values 0.2 kΩ…100 kΩ
Various AMP^Plus measurement methods selectable
Automatic adaptation to the system leakage capacitance
Info button to display device settings and the system leakage capacitance
Self monitoring with automatic alarm
Automatic self test, selectable

Connection for external kΩ indication
Test and reset button
External test/reset button can be connected
Two separate alarm relays with two potential-free changeover contacts
N/O or N/C operation, selectable
Backlit LC display
RS-485 interface
Presetting for PV systems via menu

Applications

AC, DC or AC/DC main circuits
Solar systems with directly connected inverters
Solar systems with high system leakage capacitances of up to 2000 µF
Solar systems with high but slow voltage fluctuations
Systems including switched-mode power supplies
Coupled IT systems