Bender ISOMETER iso1685FR, Manual

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43 iso1685FR(M)_D00002_02_M_XXEN/06.2017
9. Information about the measuring method
The device can report an insulation fault or a permanent interference via the following methods:
• Active method parameter:Response value Z
an
, Measured data buffer size cannot be switched off
• Passive method parameter:Response value U
an
can be switched off by setting U
an
to 0
• Interference detection parameter: Interference level (SFL), number of interferences until a device error
(SZL) can be switched off by setting SZL to 0
Coupling monitoring
• Monitoring a coupling network: switched off
• Monitoring PE coupling (E/KE).switched off
Useful default settings:
• Active methodResponse value: 25 kΩ; Measuring buffer depth:4
• Passive methodResponse value: 200 V
• Interference detection: Degree of interference: 20 %; Number of interferences until a device error:6
(120 ms)
Important:
When interference detection is switched off, the shutdown time of the active method is somewhat lon-
ger for phase faults because the disturbed measured values from the switching moment are registered
in the measuring buffer.
When interference detection is activated, the shutdown times are at least 20 ms shorter because the dis-
turbed measured values are discarded.
In the case of continuous interference, the device can only trigger via either the passive method or the
interference detection.