Setting Of Current Visualization - LEGRAND 0 281 64 Mode D'emploi

Protection unit
4. Circuit breaker switched OFF:
From this page is possible to reach the main page pushing one time the OK button .

7. Setting of current visualization

Every current on circuit breaker can be shown in two different ways: with an histogram or with a
numeric value (both of them calculated with the same accuracy) .
Maximum number of digits, for numeric value, is 4, so for values under 9999, current is expressed in
Amperes, while for values between 10000 and 99999, currents are expressed in kiloAmperes, with
the approximation to nearest lower decimal value:
• Example 1: 1450 Amperes → in this case display will show "1450 A"
• Example 2: 12541 Amperes → in this case display will show "12 .5 kA"
Histogram can show values between 0 and 1 .2 x I
protection (Ir) . Each histogram has up to 48 graphical points, each one corresponding to 2% of total
amount, with approximation to nearest lower decimal value:
• Example: I
I
2
40
protection unit display data are shown like below:
= 1000A ➔ each graphical point corresponds to 20A . If, in this case, I
r
= 565A, on histogram it will be no graphical points for I
L1: 0 A
L2: 0 A
L3: 0 A
N: 0 A
, where I
threshold
and 28 graphical points for I
1
is threshold current for thermal
threshold
= 18A and
1
.
2