Bender ISOSCAN W Series - Schematic Diagram of an EDS System

ISOSCAN® EDS440 and EDS441
2.4 Schematic diagram of an EDS system
U
n
L1
L2
PE
R
F
I
L
I
L
A1/+ A2/-
21 22 24
11 12 14
L1/+ L2 L3/- KE E
iso685
ISOMETER
®
RX2
X1
l1 l2 l3 A B
EKEL3/-L2
L1/+
EDS440
ISOSCAN
®
I ΔL I Δn
13 14 23 24
l1
k1
l2
k2
l3
k3
l4
k4
l5
k5
l6
k6
l7
k7
l8
k8
l9
k9
l10
k10
l11
k11
l12
k12
X1
l1 l2 A B
A1/+ A2/-
l1 k1 l2 k2
EDS44x Insulation fault locator
iso685-D-P Insulation monitoring device with an integrated locating current injector
U
n
Voltage source of IT system
U
s
Supply voltage
W Measuring current transformers
I
L
Locating current
R
F
Insulation fault downstream of the measuring current transformer
PE Protective earth conductor or equipotential bonding conductor
BS bus BS bus for device communication
EDS44x_D00201_10_M_XXEN/11.2023 15