GEN7iB
238
INPUT CARDS
INPUT CARDS
12
● Keep all measurement cables well separated from cables connected to high
switching loads or motor cables.
● Separate measurement equipment and cables from potentially interfering equip-
ment like frequency inverters or wireless equipment.
General cabling remark: Only use properly rated cables to measure the signal. Both the
voltage and current rating should be matched to the signal for measurements.
This instrument must be properly grounded.
When using this card, HBM advise using the standard GEN series protective ground
connections to ensure that the entire unit is grounded.
If connection to a protective ground is not possible for any reason, then please refer to
the international safety standard EN 50191:2000
Overvoltage and current protection
The activation of the overvoltage protection system results in a reduced input imped-
ance. The overvoltage protection is inactive as long as the input voltage is less than
200% of the selected input range.
Disconnect voltages before removing the card from the system.
The measuring circuit can carry hazardous voltages and should be disconnected
before the card is removed from the card slot of the measurement system.
Connectors and cables
Thespecied±50VDCvoltagerangeoftheIsolatedBasicacquisitioncardissuch
thatitfallsbelowthelowvoltagelimitasspeciedinIEC61010-1.
The limit for safe voltage and currents is set in the IEC61010-1 standard in Section 6.3
– limit values for accessible parts. The limits are:
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