Chauvin Arnoux C.A 6121, User Manual

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39
How to perform the measurement ?
1. Set the rotary switch to
∆ ∆
∆ ∆ ∆
t (discharge time) position; the screen in
fig.21 is displayed.
2. Select 4-pole system by pressing the SYST. key (4-point 5s is
displayed)
3. Connect the test cables to the instrument and to the tested unit in
accordance with figure 26; le symbol is displayed above unit
S, informing the user that the mains voltage is connected to the
MAINS TEST input.
4. Press the START/STOP key to prepare the instrument for the mains
voltage cut-out; Ready is displayed after 1s approx.
5. Pull out the double connection element and wait for the result to be
displayed.
6. Save the displayed result for documentation purposes (refer to the
instructions in chapter 5.2 to save the displayed result).
NOTES :
■ ■
■ ■ ■
The red TEST ON lamp is on during the measurement (until pulling out the double connection element and until the TEST voltage
has dropped to 60 V).
■ ■ ■ ■ ■
The actual voltage is displayed during the measurement, and the disconnection voltage (see fig.20) is displayed when the
measurement is finished.
■ ■ ■ ■ ■ ∆
t < 0.1 s is displayed under the main result and no voltage is displayed on the right of the display, if the discharge time is less
than 0.1 s.
5. OPERATION
5.1. WARNINGS
Different warnings in addition to information can be displayed during operation of the C.A 6121 MACHINE TESTER. See below a
list of warnings and information for each function.
■ ■
■ ■ ■
HV function :
Trip out : The HV generator tripped because the test current was higher than the set threshold value.
■ ■ ■ ■ ■ ∆ ∆ ∆ ∆ ∆
U function :
∆
U >
∆
U
max
: The displayed result (
∆
U) is higher than the set threshold value.
U > 12 V : The AC voltage connected to the input P1-P2 is higher than 12 V.
■ ■
■ ■ ■
R
10A
function :
R > R
max
: The displayed result (R) is higher than the set threshold value.
U > 12 V : The AC voltage connected to the input P1-P2 is higher than 12 V.
■ ■ ■ ■ ■
M
Ω Ω Ω Ω Ω
function :
R < R
min
: The displayed result (R
ins
) is lower than the set threshold value.
U > 30 V : The AC or DC voltage connected to the MW terminals is higher than 30 V.
■ ■ ■ ■ ■ ∆ ∆
∆ ∆
∆
t function :
Voltage? : There is no voltage conected to MAINS TEST terminals.
∆
t < 0.1 s : The voltage at the terminals of the MAINS TEST inputs dropped below 60 V in less than 0.1s.
∆
t > tmax : The displayed result (
∆
t) is higher than the set threshold value (chosen at the same time as the connection
system; 2 pole or 4 pole).
■ ■ ■ ■ ■
All functions :
HOT : The instrument is overheated (in functions
∆
U, R
10A
or HV)
⇒
wait.
Measurements in functions M
Ω
or
∆
t can still be carried out.
NO RESULT : There is no result on the display or the displayed result has already been saved.
NOTHING TO PRINT : There was no result saved/displayed before entering the PRINT menu.
Fig.26. Connection of the test leads
C
U :
U
:
t :
R :
in
lim
lim
in
t:
D
0...600 V AC/DC
60 V DC
5 s
96 M
W
0...10 s
C2 P2 C1 P1
600V 250V CAT III
1 - 1.25 - 1.5 kV
START / STOP
TEST ON
MEM/MR PRINT/RS SET-UP
C.A 6121
HV
M
W
R 10A
D t
D U
ARNOUX
CHAUVIN
INSULATION (M ) W
500 - 1000 V
DISCHARGE TIME ( t) D
CONTINUITY 12V/>10A ( U,R ) D
10A
DIELECTRIC (HV)
L
N
PE