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28October2022/Version 7
LEM reserves the right to carry out modifications on its transducers,
in order to improve them.
LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrin
www.lem.com
ITZ 5000-S FLEX ULTRASTAB
The table shown below summarizes various frequency values and the typical value of over current trip level to detect over current
state:
Primary current frequency (Hz)
Typical over current trip level to detect over current state
DC (0 Hz))
120 % of
I
P N
DC
1
130 % of
I
P N
DC
1.5
140 % of
I
P N
DC
50
160 % of
I
P N
DC
800
170 % of
I
P N
DC
1600
186 % of
I
P N
DC
Under these conditions:
- The signal Status (Contact between Pin 4:C and Pin 9:E) switches off, this signal becomes open (No current from collector to
emitter) to indicate that the unit is not OK.
- The status green LED located on the front panel switches off (fault state)
- The transducer is protected against damage that the over current primary AC may cause to the electronics.
The transducer will automatically starts again to work when the primary AC peak becomes lower than the trip level indicated in
the table above.
Transducer head description
Connect the transducer head to the electronics rack using the supplied transducer head cable.
The side of cable where there is the ferrite must be connected to the rack electronics.
The transducer head cable is available in three lengths: 10, 20 and 30 meters.
For more information, see section “ITZ mandatory accessories” on
.
Analog output connector
Normally the provided analog output cable should be used. It is also possible to configure your own output cable, bearing the
following description in mind.
The female 15-pin D-Sub connector Analog out connector contains the following signals:
1.
Current return
2.
Current return
3.
Current return
4.
No connection
5.
No connection
6. Ground
7.
No connection
8.
No connection
9.
Current out
10.
Current out
11.
Current out
12.
No connection
13.
No connection
14.
No connection
15.
No connection
The pins 1 to 3 are internally shorted by rack electronics. It is the same for pins 9 to 11.
Details of further considerations relating to connect the analog output connector directly to a current measuring device can be
found in the ITZ FLEX ULTRASTAB user guide.
15
9
8
1
1
8
9
15
