Safety information
10
1.4 Directions for installation
The terminals
and KE shall be connected by a separate wire to the pro-
tective conductor (PE). If the device is connected by means of terminal AK
via the coupling device to a system under operation, the terminals
and
KE 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 a genuine earth fault, e.g. via a suitable re-
sistance, before starting the device.
The devices, variant -6.. are delivered with the following factory setting:
Please check if the basic setting of the A-ISOMETER
®
complies with the re-
quirements of the system to be monitored.
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.
ISO SETUP
Alarm 1 / Alarm 2
(response values)
= 2 M
Ω
/ 100 k
Ω
ISO SETUP
Operating principle K1/K2 = N/O operation
ISO SETUP
Memory = off
ISO ADVANCED
System leakage capacitance = 5
μ
F
ISO ADVANCED
Coupling device = AGH: 575S-6
COM SETUP
Bus address = 3 (slave)
When an AC system includes galvanically connected DC circuits, the
following shall be considered:
Insulation faults in DC circuits can only be monitored correctly when
the rectifiers carry a continuous load od 5...10 mA.
Summary of Contents for A-ISOMETER AGH575S-6
Page 6: ...Table of Contents 6 TGH1384en 06 2005...
Page 16: ...Function 16 TGH1384en 06 2005...
Page 20: ...Installation and connection 20 TGH1384en 06 2005...
Page 25: ...Operation and setting 25 TGH1384en 06 2005...
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