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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.
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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 (4), fiber optic cables (3) and a copper cable (5).
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 |
7 |
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The Versions "E" and
"F" of the earth fault- and short circuit indicator type EKL1.2 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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Earth Fault
and Short Circuit Indicator type EKL1.2
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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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22.05.11
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22.04.11
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22.06.11
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22.15.11
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12.07.11
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12.06.11
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15 - 25
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22.05.12
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22.04.12
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22.06.12
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22.15.12
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12.07.12
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12.06.12
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22 - 42
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22.05.13
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22.04.13
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22.06.13
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22.15.13
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12.07.13
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12.06.13
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35 - 45
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22.05.14
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22.04.14
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22.06.14
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22.15.14
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12.07.14
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12.06.14
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45 - 55
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22.05.15
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22.04.15
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22.06.15
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22.15.15
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12.07.15
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12.06.15
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55 - 65
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22.05.16
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22.04.16
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22.06.16
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22.15.16
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12.07.16
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12.06.16
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Steel
belt*
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22.05.18
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22.04.18
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22.06.18
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22.15.18
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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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Order Data
Earth Fault and Short Circuit
Indicator type EKL1.2
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| operating points short circuit: |
| 200
/ 400 / 500 / 600 / 800 / 1000 / 1200A ** |
| reset delay: |
(h)______
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| minimum impulse duration: |
(ms)______
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| power supply |
:(V)______ |
| length of fiber optic cables |
:(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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