BENNING IT 130
short instructions
- 18 -
2.5 Residual current operated device (RCD)
1. Set function
2. Set sub-function, parameters and limits.
RCD
RCD I
Tripping current
RCD t
Tripping time
Uc
Contact voltage
AUTO
automatic test
Nominal tripping differential current I
N
[10/30/100/300/500/1000 mA].
RCD type
[AC, A, F, B, B+]
Starting polarity
[
,
,
,
,
,
]
Characteristic
[selective
, general non-
delayed
, PRCD, PRCD-S, PRCD-K,
EV RCD, MI RCD]
Multiplication factor for test current
[½ x I
N
, 1/2/5 x I
N
].
Limiting value for contact voltage
[25 V, 50 V].
3. Connection diagrams
Connecting the "Commander" test plug (optional, TN 044149) and the 3-wire test lead
4. Press the key
.
5. The measuring result can be stored by means of the "MEM" key.
Uc
.....Contact voltage
RL
.....Fault loop
resistance
t
........ Tripping time
Uc
.... contact voltage
for nominal value I
N
I
......... Tripping
current
Uci
.... Contact
voltage at trip-out
current I or end value
in case the RCD
didn’t trip
t
......... Tripping time
Measuring values for
0°/180°:
x1
... Tripping time I
N
x5
... Tripping time 5xI
N
x½
.. Tripping time
½
I
N
I
.... Tripping current
Uc
…Contact voltage
for I
N
