Operation Page 41 of 85
NOTE: In-Rush Current
The In-Rush current limit for the DC hipot test is a low limit which is monitored during initial charging of the device
under test. When activated (other than Off), current below the programmed value is considered to be a Fail
condition. This current monitoring is generally used to check that the charging current to the device exceeds a
specified value (> programmed limit), thus ensuring that the device is properly connected to the tester.
2.7 Programming an IR (Insulation Resistance) Test
This test is applicable to the Sentry 30 Plus instrument. With the instrument in ‘stand-by’ status,
press [F1] = PROGRAM. If continuing the 5-step example from ¶2.6, you are already in
program mode and on the AC test mode page. This example shows a GC test as Step1, an AC
test as Step 2, a DC test as Step 3 and how to program an IR test in Step 4. Follow the green
arrows (!) on the right side of this diagram to program the individual IR test parameters.
Continue on next page.
INC.
DEC.
EXIT
NEXT
RMT ERROFSTLOCK0.05 - 1kV
F1
F4
F3
F2
RAMP
HIGHIRSTEP 4/4
VOLT
LOW
TIME
Select
IR
Test Mode
Set
Test Voltage
Set
Low
Resistance
Limit
To set low resistance limit:
0.1M - 50G
Ω
in 0.1M
Ω
increments
To move highlighted box to LOW.
To move highlighted box to TIME.
INC.
DEC.
EXIT
NEXT
RMT ERROFSTLOCK0.1M
Ω
- 50G
Ω
F1
F4
F3
F2
RAMP
HIGHIRSTEP 4/4
VOLT
LOW
TIME
INC.
DEC.
EXIT
NEXT
RMT ERROFSTLOCK0, 0.1 - 999s
F1
F4
F3
F2
RAMP
HIGHIRSTEP 4/4
VOLT
LOW
TIME
To set dwell time:
0, 0.1 -999s in 0.1s increments
To move highlighted box to HIGH.
Set
Test Time
To set test voltage:
0.05 - 1kV in 0.001kV increments
OFF
OFF
OFF
OFF
OFF
OFF
To move highlighted box to VOLT
UP
DOWN
EXIT
NEXT
RMT ERROFSTLOCKSelect Mode
F1
F4
F3
F2
RAMP
ARC
LOWACSTEP 4/4
VOLT
HIGH
TIME
OFF
OFF
OFF
[F1] = NEW
Program
Step 4 = IR
To move highlighted box to MODE.
To exit programming mode.
To delete or insert a test step.
To change value of highlighted box.
FIRST
MORE..
EXIT
NEXT
RMT ERROFSTLOCKVoltage is 0
F1
F4
F3
F2
RAMP
ARC
LOWACSTEP
VOLT
HIGH
TIME
OFF
OFF
OFF
0.000kV:
:
:
:
:
:
3.0s
0.500mA
:
:
:
:
:
:
4/4
0.000kV
0.500mA
3.0s
FALL OFF:
:
:
:
FALL OFF
:
:
: 0.000kV
3.0s
1.0M
Ω
OFF
FALL :
:
:
:
:
: 0.750kV
1.0M
Ω
3.0s
OFFFALL
:
:
:
:
:
:
3.0s
1.5M
Ω
0.750kV
Set MODE = IR
FALL OFF:
:
DWELL OFF
OFF
DWELL :
:
OFFDWELL
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