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Safety instructions
15
IRDH275_D00122_03_M_XXEN/05.2017
When using ISOMETER®s in IT systems, make sure that only
one active ISOMETER® is connected in each interconnected
system. If IT systems are interconnected via coupling
switches, make sure that ISOMETER®s not currently used are
disconnected from the IT system and deactivated. IT systems
coupled via diodes or capacitances may also influence the
insulation monitoring process so that a central control of the
different ISOMETER®s is required.
Prevent measurement errors!
When a monitored IT system contains galvanically coupled
DC circuits, an insulation fault can only be detected correctly
if the rectifier valves (e.g. rectifier diode, thyristors, IGBTs,
frequency inverters, …) carry a minimum current of > 10 mA.
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
application 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 frequency components above the specified
frequency range, e.g. within the range of typical switching
frequencies of frequency inverters (2…20 kHz).
Содержание ISOMETER IRDH275
Страница 36: ...Anschluss 36 IRDH275_D00122_03_M_XXDE 05 2017 ...
Страница 38: ...Inbetriebnahme Schema dreiteilig 38 IRDH275_D00122_03_M_XXDE 05 2017 Inbetriebnahme des ISOMETER s 2 ...
Страница 40: ...Inbetriebnahme Schema dreiteilig 40 IRDH275_D00122_03_M_XXDE 05 2017 ...
Страница 91: ...91 IRDH275_D00122_03_M_XXDE 05 2017 W Werkseinstellungen 73 Z Zulassungen 79 ...
Страница 128: ...Connection 36 IRDH275_D00122_03_M_XXEN 05 2017 ...
Страница 130: ...Commissioning flow chart threepart 38 IRDH275_D00122_03_M_XXEN 05 2017 Commissioning of the ISOMETER 2 ...
Страница 132: ...Commissioning flow chart threepart 40 IRDH275_D00122_03_M_XXEN 05 2017 ...
Страница 144: ...Operation and setting 52 IRDH275_D00122_03_M_XXEN 05 2017 Diagram ISO SETUP ...
Страница 152: ...Operation and setting 60 IRDH275_D00122_03_M_XXEN 05 2017 6 6 4 Diagram COM SETUP IRDH275B ...
Страница 154: ...Operation and setting 62 IRDH275_D00122_03_M_XXEN 05 2017 6 7 2 Diagram PASSWORD ...
Страница 183: ...91 IRDH275_D00122_03_M_XXEN 04 2017 ...