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Application
The earth fault and short circuit indicator type EKS3.2 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 fault can be indicated as follows:
a) short circuit - with one LED for each core
b) earth fault - with one LED
c) one remote indication for earth fault and short
circuit via a potential-free relay contact.
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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.
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version
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number of operating points
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| earth fault |
short circuit |
| E |
1 |
1 |
| F |
6 |
6 |
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| 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 EKS3.2 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.).
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Order Data
Earth Fault and Short Circuit Indicator type EKS3.2
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| operating points short circuit: |
| 200 / 400 / 500 / 600 / 800 / 1000 A ** |
| reset delay: |
(h)______
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| minimum impulse duration: |
(ms)______
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| power supply |
:(V)______ |
| cable length |
:(mm)_____
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order number
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:________
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earth fault sensor
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| operating points earth fault: |
| 10 / 20 / 30 / 40 / 50 / 60 A** |
| cable diameter |
:(mm)_______
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| cable length |
:(mm)_______
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order number
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:________
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**standard - other values can be chosen by special request |
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Earth Fault and Short Circuit Indicator type EKS3.2
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core
diameter
(mm)
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surface mounted
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panel mounted
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earth fault sensor
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version
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version
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one-
core
cable
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three-
core
cable
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E
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F
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E
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F
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5 - 15
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22.11.11
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22.32.11
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22.12.11
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22.34.11
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12.07.11
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12.06.11
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15 - 25
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22.11.12
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22.32.12
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22.12.12
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22.34.12
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12.07.12
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12.06.12
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25 - 35
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22.11.13
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22.32.13
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22.12.13
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22.34.13
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12.07.13
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12.06.13
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35 - 45
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22.11.14
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22.32.14
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22.12.14
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22.34.14
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12.07.14
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12.06.14
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45 - 55
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22.11.15
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22.32.15
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22.12.15
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22.34.15
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12.07.15
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12.06.15
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55 - 65
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22.11.16
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22.32.16
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22.12.16
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22.34.16
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12.07.16
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12.06.16
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Steel
belt*
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22.11.18
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22.32.18
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22.12.18
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22.34.18
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12.07.18
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12.06.18
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* advise cable diameter by ordering
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