|
|
|
|
Application
This earth fault and short circuit indicator is
a combined instrument for detecting earth faults and short circuits.
This indicator is used in medium voltage radial networks with one input. The earth fault current in resistance-earthed or solidly earthed neutral systems must be 10 A as a minimum. This indication system should be installed in each branch of the network.
The indication of short circuits or earth faults
is perforned via one LED for each type of fault. The remote indication is performed via a
potential-free relay contact.
|
 |
|
General Description
The indicator is available as a panel-mounted (1) or surface- mounted (2) device. The indicator set consists of one reading instrument (1,2), four sensors (3) and copper cables (4).
The earth fault- and short circuit indicator summarizes two ways of fault search:
1.) detection of short circuits
2.) detection of earth faults.
|
|
|
|
|
version
|
number of operating points
|
| earth fault |
short circuit |
| E |
1 |
1 |
| F |
6 |
6 |
|
|
| The short circuit sensors and the earth fault sensor must be installed on screened, earthed cables.
The Versions "E" and "F" of the earth fault- and short circuit indicator type EKS1.2 are constructed identically.
The difference is the number of operating points for earth fault and / or short circuit indication which can be chosen (confer table).
Every instrument is equipped with a contact for remote indication as a permanent contact (1 x changer). (Wipper contact is availabe by special request.).
|
|
|
|
Order Data
Earth Fault and Short Circuit Indicator type EKS1.2
|
|
| operating points short circuit: |
| 200 / 400 / 500 / 600 / 800 / 1000 A ** |
| reset delay: |
(h)______
|
| minimum impulse duration: |
(ms)______
|
| power supply |
:(V)______ |
| cable length |
:(mm)_____
|
|
order number
|
:________
|
|
earth fault sensor
|
| operating points earth fault: |
| 10 / 20 / 30 / 40 / 50 / 60 A** |
| cable diameter |
:(mm)_______
|
| cable length |
:(mm)_______
|
|
order number
|
:________
|
**standard - other values can be chosen by special request |
|
|
|
Earth Fault and Short Circuit Indicator type EKS1.2
|
|
core
diameter
(mm)
|
surface mounted
|
panel mounted
|
earth fault sensor
|
|
version
|
version
|
one-
core
cable
|
three-
core
cable
|
|
E
|
F
|
E
|
F
|
|
5 - 15
|
22.09.11
|
22.25.11
|
22.10.11
|
22.27.11
|
12.07.11
|
12.06.11
|
|
15 - 25
|
22.09.12
|
22.25.12
|
22.10.12
|
22.27.12
|
12.07.12
|
12.06.12
|
|
25 - 35
|
22.09.13
|
22.25.13
|
22.10.13
|
22.27.13
|
12.07.13
|
12.06.13
|
|
35 - 45
|
22.09.14
|
22.25.14
|
22.10.14
|
22.27.14
|
12.07.14
|
12.06.14
|
|
45 - 55
|
22.09.15
|
22.25.15
|
22.10.15
|
22.27.15
|
12.07.15
|
12.06.15
|
|
55 - 65
|
22.09.16
|
22.25.16
|
22.10.16
|
22.27.16
|
12.07.16
|
12.06.16
|
|
Steel
belt*
|
22.09.18
|
22.25.18
|
22.10.18
|
22.27.18
|
12.07.18
|
12.06.18
|
* advise cable diameter by ordering
|
|
|
|
|
|
|
|
|
|
|
.gif)