BENNING IT 130
short instructions
- 20 -
2.7 Line impedance (Z
I L-N/L
)
1. Set function
2. Set sub-function, parameters and limits.
Z
L
Z Line
Line impedance
ΔU
Voltage drop
Fuse type
[---, gL/gG , gG, B, C, K, D]
Nominal current
of the fuse
Turn-off time
of the fuse
Maximum voltage drop
[3,0 % ÷ 9,0 %]
3. Connection diagrams
Line impedance
Connection of the optional "Commander" test plug (044149) and of the three-wire test cable
Voltage drop
Connection of the optional "Commander" test plug (044149) and of the three-wire test cable
4. Press the key
.
5. The measuring result can be stored by means of the "MEM" key.
Z:
......Line impedance
Isc
.....Prospective short-circuit current
Lim
...Lower limiting value of the prospective
short-circuit current
ΔU
.... Voltage drop
Isc
.... Prospective short-circuit current
Z
....... Line impedance at the measuring point
Zref
..
Line impedance of the reference point
