Insulation Resistance - Chauvin Arnoux C.A 6121 Mode D'emploi

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

How to perform the measurement ?
1. Set the rotary switch to MΩ Ω Ω Ω Ω position(insulation resistance); the following screen is displayed.
Function name
Insulation
resistance
Un key to set
nominal test voltage
2. Select the test parameters as follows :
Insulation resistance threshold
- Press the R key to access the menu for insulation resistance threshold selection.
min
- Press the ñ ou 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 key to select the test voltage: 500 V DC or 1000 V DC
n
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.
C.A 6121 MACHINE TESTER
+
500/1000 V DC
G V
-
A
Fig.15. Test circuits
Nominal test voltage
MΩ 1000V
_ _ _ _ MΩ
Un Rmin
Fig.16. Basic screen in MΩ Ω Ω Ω Ω position
U
test
I
test
Fig.14. Connection of the test leads
OBJECT UNDER TEST
+
R
ins
I
ins
Threshold insulation resistance
1MΩ
Set timer value
10mn
Timer key to set timer
Timer
value or to switch it on/off
Rmin key to set
threshold insulation resistance
_ _ _ _ MΩ
36
L1
L2
OFF
L3
N
PE
REMOTE
+
INSULATION (M ) W
500 - 1000 V
600V
:
<12 V/50 Hz
C1
: >10 A AC (for R : 0...500 m ) W
MΩ 1000V
Exit
Fig.17. Insulation resistance
threshold selection menu
230V / 50Hz
500VA
WARNING LAMP 12V~ RS232C
DISCHARGE TIME ( t) D
TEST
600V 250V CAT III
ON
MAINS OFF
TEST
TEST ON
CONTINUITY 12V/>10A ( U,R D 10A )
MEM/MR PRINT/RS SET-UP
P1 P2 C2
DIELECTRIC (HV)
CHAUVIN C.A 6121
ARNOUX START / STOP
1 - 1.25 - 1.5 kV MACHINE TESTER
1MΩ
10mn