Bender ISOSCAN W Series - Settings; EDS Settings on the ISOMETER; Locating Current Injector Settings

Settings
9 Settings
9.1 EDS settings on the ISOMETER®
Settings of the EDS are made via the device menu of the ISOMETER®. For a detailed menu description, refer to
the manual of the ISOMETER®.
9.1.1 Locating current injector settings
9.1.1.1 Mode
Three different start and stop conditions for insulation fault location can be set on the ISOMETER®:
• Manual The EDS system can be started manually using a shortcut button or via the menu. Afterwards,
the EDS system is permanently active, regardless of the insulation value and the alarm message
of the ISOMETER®. The EDS system can be stopped manually at any time using the shortcut
button or the menu.
• auto The EDS system is activated automatically as soon as the response values of alarm 1 and alarm 2
of the ISOMETER® fall below the limit. It remains active until no more insulation faults are
detected. For a re-measuring of the insulation fault value by the ISOMETER®, the EDS insulation
fault location is cyclically interrupted for approx. 5 minutes. The EDS system can be stopped
manually at any time using the shortcut button or the menu.
• 1 cycle The EDS system is automatically activated for 5 minutes as soon as the response values of
alarm 1 and alarm 2 of the ISOMETER® fall below the limit. After this cycle, the insulation fault
location is completed. The EDS system can be stopped manually at any time using the shortcut
button or the menu.
Insulation monitoring
During the insulation fault location process, insulation monitoring is temporarily inactive. During the
insulation fault location process, connection and short-circuit monitoring is temporarily inactive.
9.1.1.2 Locating current
The maximum locating current of the locating current injector can be set in the ISOMETER®.
Suitable locating currents for the respectivce EDS
1 mA 1.8 mA 2.5 mA 5 mA 10 mA 25 mA 50 mA
EDS440-… × × × ×
EDS441-… × × × ×
EDS440-LAF-4 × ×
EDS441-LAB-4 ×
A combination of a high current transformer inductance, a high residual current outside the specified
frequency range and simultaneously a high locating current can lead to saturation effects in the current
transformer and thus influence the measurement. Working with a locating current of max. 10 mA
(EDS440) is recommended. If the locating current is distributed among several parallel faults, it can be
increased.
50 EDS44x_D00201_10_M_XXEN/11.2023