Operation Manual

BENNING IT 130 short instructions

- 19 -

2.7 Line impedance (Z

I L-N/L

)

1. Set function

2. Set sub-function, parameters and limits.

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