Isometer® iso685-d-p iso685W-d-p iso685-s-p iso685w-s-p insulation Monitoring Device with integrated locating current injector for it ac systems with galvanically connected rectifiers and inverters and for it dc systems

Connection
Connection
iso685-D-P_D00170_03_M_XXEN/07.2017
24
6.4 Connection to a DC system
Position the terminal cover and click it into place
For systems > 690 V and with overvoltage category III a fuse for 
the connection to the system to be monitored must be provided. 
Recommendation: 2 A fuses.
Risk of injury, fire and damage to property due to a short circuit! 
According to DIN VDE 0100-430, devices used to protect against a short
circuit when terminals L1/+, L2 und L3/- are coupled to the IT system to be
monitored can be omitted if the wiring is carried out in such a manner as
to reduce the risk of a short circuit to a minimum. Ensure short-circuit-
proof and earth-fault-proof wiring.
WARNING
L+
L-
PE
U
S
U
n
6.5 Connection to the X1 interface
Position the terminal cover and click it into place
I1
I2
I3
A
B
M+
Q2
Q1
+
Electrical overload protection. 
Auto shut-off in the event of a short 
circuit and transients (resettable)
Input 1
Input 2
Input 3
RS-485 A
RS-485 B
Ground
Analogue output
Output 2
Output 1
+24 V

Connection
Connection
iso685-D-P_D00170_03_M_XXEN/07.2017
25
6.6 Connection to the supply voltage
External Power supply for powering the ISOMETER® via terminal X1 must
fulfil immunity and emission standards of the required application. For
wiring longer than 1 m the use of a shielded cable is prescribed.

tải về 5.18 Mb.

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