EMH ITZ - Page 23

23
Examples:
Case
Display
A
Sum
> 0, A
2
< 0
+A is registered
+P static, L2 and -P flash
A
Sum
< 0, A
3
> 0
-A is registered
-P static, L3 and +P flash
A
Sum
> 0, A
1
and A
3
< 0
+A is registered
+P static, L1, L3 and -P flash
c) lAl - Absolute meter
If at least one phase is negative then in addition to the energy direction arrow
+P, the energy direction arrow -P appears.
Case
Display
A
Sum
< 0, +A is registered
+P and -P static
6b. Display of deviating energy directions of the phases (Firmware 6.XX)
a) Unidirectional meter
If the direction of the energy flow of at least one phase is negative, the relevant
energy flow arrow flashes.
Examples:
Case for active energy
Display
A
Sum
> 0, A
2
< 0
+A is registered
+P static, L2 flash
A
Sum
< 0, A
3
< 0
no start up
-P, L1 and/or L2 flash
A
Sum
< 0, A
1
, A
2
and A
3
< 0
no start up
-P flash
Case for reactive energy
Display
R
Sum
> 0, R
2
< 0
+R is registered
+Q L1, L2 and L3 static
R
Sum
< 0, R
3
< 0
no start up
-Q, L1, L2 and L3 static
R
Sum
< 0, R
1
, R
2
and R
3
< 0
no start up
-Q, L1, L2 and L3 static
b) Bidirectional meter +A/-A or lAl - Absolute meter
If the direction of the energy of at least one phase deviates from the energy
direction of the phase sum, the symbol of the relevant phase flashes.
Example:
Case
Display
A
Sum
> 0, A
2
< 0
+A is registered
L2 flash
A
Sum
< 0, A
3
> 0
-A is registered
L3 flash
A
Sue
> 0, A
1
and A
3
< 0
+A is registered
L1 and L3 flash