Bender IR420-D4-2 B71016405 Fiche De Données

Codes de produits

B71016405

TDB101012en / Main catalogue part 1 – Insulation monitoring / 09.2011

1.1

A-ISOMETER® IR420

Operating elements

Wiring diagram

1 -

LED Power "ON", flashes in case of interruption of the connecting

leads earth/ KE or L1 / L2.

2 -

Alarm LED "AL1", lights when the value falls below the set response

value Alarm 1 and flashes in case of interruption of the connecting
leads earth/KE or L1/L2).

3 -

Alarm LED "AL2", lights when the value falls below the set response

value Alarm 2 and flashes in case of interruption of the connecting
leads earth/KE or L1/L2).

4 -

LC display

5 -

Test button "T": to call up the self test.

Arrow up button: Parameter change, to move up in the menu.

6 -

Reset button "R": to delete stored insulation fault alarms

Abwärts-Taste: Parameter change, to move down in the menu.

7 -

"MENU" button: to call up the menu system.

Enter button: to confirm parameter change

1 -

Supply voltage U

(see ordering information) via fuse

2 -

Separate connection of E and KE to PE

3 -

Connection to the AC system to be monitored:

AC: connect terminals L1, L2 to conductor L1, L2.

4 -

Alarm relay K1: Alarm 1

5 -

Alarm relay K2: Alarm 2

6 -

Combined test and reset button "T/R"

short-time pressing (< 1.5 s) = RESET
long-time pressing (> 1.5 s) = TEST

7 -

Line protection by a fuse in accordance with IEC 60364-4-43

(6 A fuse recommended). In case of supply (A1/A2) from an
IT system, both lines have to be protected by a fuse.