Chauvin Arnoux C.A 6030 Manual De Instrucciones página 65

Note : an "upstream-downstream" connection makes
it possible to trip a residual current device even if there
is a residual current device having a lower rating
upstream of it.
This method can be used with single-phase current or
with three-phase current, either with a neutral (in this
case the nominal phase-to-neutral voltage must not
exceed 400V) or without a neutral (in this case the
nominal phase-to-phase voltage must not exceed
400V).
4.2.2.3 Measurement procedure
The instrument first checks the resistance of the rod and measures the voltage between PE and earth,
then measures voltages U
LN
If these values are correct, pressing the
available, it is displayed.
Special case os selective RCDs :
In this case :
- the test current applied by the instrument is equal to 2 I
- the calculated value of U
- the instrument adds a 30-sec pause between the non-tripping test and the tripping test and
displays the count-down of this pause time on the screen (press the
out shorter).
4.2.2.4 Measurement results
After tripping, the measured values and complementary results can be looked up using the
keys, as indicated in the table below (the quantities that can be looked up before the measurement
MORE
is made are presented in § 4.1.4) :
Initial
display
T
A
Initial display
(1)
I
A
T
A
(1 st press)
(1)
I
A
T
nd
(2 press)
A
(1)
I
A
T
rd
(3 press)
A
(1)
I
A
, U , U .
LPE NPE
key starts the measurement: as soon as the result is
TEST
is multiplied by 2,
Fn
MORE MORE
st (2 nd press)
(1 press)
----
----
I.ntP
I (2)
∆N
----
----
(2)
I I.ntP
∆N
---- ----
(2)
I I.ntP
∆N
----
----
(2)
I I.ntP
∆N
65
,
∆N
key to make this time-
TEST
MORE
MORE
(3 rd press) th
(4 press)
(4)
R U
E
REF
(3)
Z
I
LPE KLPE
R (4)
U
E
REF
(3)
Z
I
LPE
KLPE
(4)
R
U
E
REF
(3)
Z
I
LPE KLPE
(4)
R U
E
REF
(3)
Z
I
LPE KLPE
and
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th
(5 press)
----
(5)
U
F
----
U (5)
F
----
(5)
U
F
----
(5)
U
F