Safety instructions
Safety instructions
isoPV1685xxx_D00007_05_M_XXEN/02.2020
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2.4 Address setting and termination
Correct address setting and termination is essential for proper functioning of the device.
Ensure correct address setting and termination of the device!
Unspecified frequency range!
When connecting to an IT system with frequency components below the
specified frequency range, the response times and response values may
differ from the indicated technical data. However, depending on the ap-
plication and the selected measurement method, continuous insulation
monitoring is also possible in this frequency range.
There is no influence on the insulation monitoring for IT systems with fre-
quency components above the specified frequency range, e.g. within the
range of typical switching frequencies of frequency inverters (2…20 kHz).
CAUTION
Risk of bus errors!
Double assignment of addresses on the respective BMS or
CAN busses can cause serious malfunctions.
2.5 Intended use
The isoPV1685RTU and the isoPV1685P are used for insulation monitoring of large pho-
tovoltaic systems up to DC 1500 V designed as IT systems. The measurement method
specially developed for slow voltage fluctuations (MPP tracking) monitors the insulation
resistance even in systems equipped with large solar generator panels where extremely
high system leakage capacitances against earth exist due to interference suppression
methods. Adaptation to system-related high leakage capacitances also occurs automati-
cally.
The isoPV1685P generates locating current pulses required for insulation fault location.
That allows the localisation of the insulation fault using permanently installed or mobile
insulation fault locators.
Intended use also implies:
•
The observation of all information in the operating manual
•
Compliance with test intervals
In order to meet the requirements of applicable standards, the equipment must be ad-
justed to local equipment and operating conditions by means of customised parameter
settings. Please heed the limits of the range of application indicated in the technical data.
Any other use than that described in this manual is regarded as improper.
Only
qualified personnel
are permitted to carry out the work necessary
to install, commission and run a device or system.