Earth-Leackage-Guard (Elg) - iTD uni-cart Mode D'emploi

Electrical safety
of the uni-cart, pro-cart, duo-cart, compact-cart, classic-cart or endo-cart carrier system must If an isolating transformer is not mounted, the multiple socket strip / auxiliary socket strip system
not be used to connect up equipment that is not in conformity with requirements for earth
leakage currents under IEC 60601-1-1.
If an isolating transformer is mounted, the total power uptake of all the connected units must
remain within the rated value for the isolating transformer (660 VA, 1000 VA, 1600 VA, 2000 VA).
3.6 Earth-leakage-guard (ELG)
The following descriptions are only applicable for the carrier systems in which the item "isolating
transformer with insulating monitor" is installed: ZV.9405.999, ZV.9403.999, ZV.9401.999,
ZV.9483.999 und ZV.9497.999.
3.6.1 Control panel of the earth-leckage-guard (ELG)
At the devices with integrated-earth-leakage guard the evaluation unit is in the transformer case,
the separate control panel is placed in one of the shelves. Both components are connected
with an interface cord, which lays in one of the profiles.
Control panel of the earth-leakage-guard (optional)
1 Power on control (green)
2 Signals exceeding dielectric resistance (yellow)
3 Signals exceeding temperature (yellow)
4 Reset-button for fault release
5 Test-button starting self-test function manually
3.6.2 Application requirements
The earth-leakage-guard monitors the dielectric resistance for equipment (where safety isolation
is necessary) which are connected to the isolation transformers. Simultaneously, the temperature
of the transformer is evaluated by a built-in thermal switch which responds when triggered. The
evaluation procedure is processor controlled.
3.6.3 Application requirements
Turn the main power switch of the isolating transformer to "ON". Within 5 s the self-test of the
ELG is automatically activated.
After the self-test of the ELG is concluded, the green LED (Power on control) glows permanently.
During operation this test is repeated (automatically) in a time cycle of 8 hours. This self-test may
also be activated manually through the test-button.
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