Connection
35
IRDH375_D00124_05_M_XXEN/01.2020
Legend to wiring diagram:
1
For external indicating instrument:
IRDH375: current output, not galvanically separated: 0 … 400 µA
IRDH375B: current output, galvanically separated: 0…20 mA or
4…20 mA
*2
External TEST button (NO contact)
*3
External RESET button (NC contact or wire jumper),
when the terminals are open, the fault message will not be stored
*4
STANDBY by means of the function input F1, F2:
When the contact is closed, insulation measurement does not take
place; system disconnection
5
S1 = ON: RS-485 interface (A/B) is terminated with 120 Ω resistor
S2 = unassigned
6
Serial interface RS-485 (A/B)
7
device fault relay K3; changeover contacts provided
8
Alarm relay K2; changeover contacts provided
9
Alarm relay K1; changeover contacts provided
10
Supply voltage U
s
(see nameplate) via 6 A fuse;
For UL and CSA applications, the use of 5 A fuses is mandatory
11
Connection to the 3NAC system to be monitored:
connect terminals L1, L2 to neutral conductor N
12
Connection to the 3 AC system to be monitored:
connect terminals L1, L2 to conductor L1, L2
13
Connection to the AC system to be monitored:
connect terminals L1, L2 to conductor L1, L2
14
Connection to the DC system to be monitored:
connect terminal L1 to conductor L+, terminal L2 to conductor L-
To Next Page
Loading...
Need help?
General
