Chauvin Arnoux C.A 6121, Руководство пользователя

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36
3. Connect the test leads to the instrument and to the tested instrument in
accordance with figure 14.
4. Press the START/STOP key to start the measurement.
5. Wait for the set time to elapse (if the timer has been switched on) or press
the START/STOP key again to stop the measurement.
6. Save the displayed result for documentation purposes (refert to the
instructions in chapter 5.2 to save the displayed result).
4.4. INSULATION RESISTANCE
R
ins
I
ins
G V
A
C.A 6121 MACHINE TESTER OBJECT UNDER TEST
+
-
+
500/1000 V DC
Fig.15. Test circuits
How to perform the measurement ?
1. Set the rotary switch to
M
Ω Ω Ω Ω Ω
position(insulation resistance); the following screen is displayed.
10mn
_ _ _ _ M
Ω
Timer Rmin Un
1000V 1M
Ω
M
Ω
Function name
Nominal test voltage Threshold insulation resistance
Set timer value
Timer key to set timer
value or to switch it on/off
Rmin key to set
threshold insulation resistance
Insulation
resistance
Un key to set
nominal test voltage
Fig.16. Basic screen in M
Ω Ω Ω Ω Ω
position
2. Select the test parameters as follows :
■ ■ ■ ■ ■
Insulation resistance threshold
- Press the
R
min
key to access the menu for insulation resistance threshold selection.
- Press the
ñ ñ ñ ñ ñ
ou
ò ò ò ò ò
keys to select the threshold*.
*
A buzzer will ring if this threshold is exceeded. If the value ∗ m Ω is chosen as
limit, the result will not be compared to any threshold and no buzzer will ring.
- Press EXIT key to exit this menu
■ ■
■ ■ ■
Test voltage
- Press the
U
n
key to select the test voltage: 500 V DC or 1000 V DC
■ ■ ■ ■ ■
Timer ON/ OFF
- Refer to the instructions in chapter 4.1.
■ ■ ■ ■ ■
Duration of the test
- Refer to the instructions allowing definition of the duration in chapter 4.1.
10mn
_ _ _ _ M
Ω
Exit
1000V 1M
Ω
M
Ω
Fig.17. Insulation resistance
threshold selection menu
L1
L2
L3
OFF
N
PE
U :
I :
test
test
<12 V/50 Hz
>10 A AC (for R : 0...500 m )
W
C2 P2
C1 P1
600V 250V CAT III 600V
TEST
MAINS
TEST
REMOTE WARNING LAMP 12V~
1 - 1.25 - 1.5 kV
START / STOP
TEST ON
230V / 50Hz
500VA
RS232C
MEM/MR PRINT/RS SET-UP
C.A 6121
MACHINE TESTER
ON
OFF
H V
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)
Fig.14. Connection of the test leads