Response Settings - Bender ISOMETER isoES425 Quick Start Manual

7.1 "AL" menu

Response settings

The response value menu "AL" contains the parameters "R1" and "R2" which
are used to monitor the insulation resistance R
greater than that for R2. If the value of R
R1 or R2, then an alarm message is triggered. The alarm is cleared if R
the values of R1 or R2 plus the hysteresis value (see table below).
The parameters "U <" and "U >" that monitor the nominal system voltage U
can also be activitated or deactivated in the "AL" menu. The maximum under-
voltage value is limited by the overvoltage value.
Display Activation
FAC
R1 <
R2 <
U < off
U > off
FAC = Factory setting;
isoES425_D00214_00_Q_DEEN/08.2017
Cs
Range
R2 ... 990
1 ... R1
10 ... U>
U< ... 500
Cs = User setting
. The setting for R1 must be
F
reaches or falls below the values of
F
Setting
Cs
FAC
69
23 kΩ
30
500
Description
Pre-alarm value R
kΩ
Hys. = 25%/min. 1 kΩ
Alarm value
Hys. = 25%/min. 1 kΩ
Alarm value
V Undervoltage r.m.s
Hys . = 5%/min. 5 V
Alarm value
V Overvoltage r.m.s
Hys. = 5%/min. 5 V
exceeds
F
n
an1
R
an2
29