Directions For Installation - Bender A-ISOMETER IR1570 Series Operating Manual

1.4 Directions for installation

Only one insulation monitoring device may be used in each intercon-
nected IT system.
When insulation or voltage test are to be carried out, the device shall
be isolated from the system for the test period.
The terminals
the protective conductor (PE). If the terminals L1, L2 of the device are
connected to a system under operation, the terminals
must not be disconnected from the protective conductor (PE).
In order to check the proper connection of the device, it is recommended to
carry out a functional test using an insulation fault RF against earth, e.g. via
a suitable resistance, before starting the A-ISOMETER®.
The devices, variant -4.. are delivered with the following factory setting:
ISO SETUP: Alarm 1 / Alarm 2
ISO SETUP: Arbeitsweise K1/K2 = Arbeitsstromschaltung
ISO SETUP: Memory
Please check if the basic setting of the A-ISOMETER® complies with the require-
ments of the system to be monitored.
To IR1575 it applies that insulation faults in DC circuits connected to
the AC system are only monitored correctly when the rectifiers carry
a continuous load of > 5...10 mA.
8
and KE shall be connected by a separate wire to
= 40 kΩ / 10 kΩ
= off
Safety information
and KE
TGH1370en/12.2019