3. Close the ICLAMP around the conductor
under test.
4. Set the rotary selector switch to the
A
position.
5. The ground current flowing in the
conductor will be displayed.
Resistance measurement using ART
1. Ensure the rotary selector switch is in the
position.
2. Connect the instrument as shown.
3. Close the ICLAMP around the conductor
under test.
4. Set the rotary selector switch to the 3P
or 4P position.
5. Press and release the
button [by
holding the
button, the resistance
measurement will be continually updated].
6. The instrument will perform pre-measure-
ment checks, the status of which will be
indicated on the display.
7. The three-terminal or four-terminal
resistance reading using ART will be dis-
played.
SPECIFICATIONS
Measurement range:
1 mA to 1200 A
Transformation ratio
: 1000 : 1
Output signal:
1 mA / A (1 A @ 1000 A)
Accuracy
1mA to 100 mA :
≤
3% of reading
0.1 A to 1 A :
≤
2% of reading
1 A to 10 A :
≤
1% of reading
10 A to 100 A :
≤
0.5% of reading
Operating temperature
-10°C to +50°C / 14°F to 122°F
0% to 85% RH at +35°C / 95°F
Storage temperature
-20°C to +70°C / -4°F to 158°F
Jaw opening:
57 mm maximum (2.3 in)
Maximum conductor size:
52 mm (2.1 in)
Insulation:
Double insulation
Voltage rating:
600 V CAT III
Current rating:
1200 A for 20 minutes
Ingress protection:
IP40
Safety
EN61010-2-032
EMC
EN 50081-1 Class B
EN 50082-2
Dimensions:
111 mm x 216 mm x 45 mm
(4.4 in x 8.5 in x 1.8 in)
Weight:
0.5 kg approximately (1.2lb)
TEST
TEST
OFF
PREPARATIONS FOR USE
1. Ensure that the ICLAMP jaw mating surfaces
are free of dust and contamination and that
they contact completely when the ICLAMP
is closed.
2. Currents carried by conductors in close
proximity to the ICLAMP may affect
calibration and reduce the accuracy of
measurements made.
CALIBRATION OF THE ICLAMP
The ICLAMP should be calibrated once at
each test site to take into account the effects
of transportation, temperature and humidity
on the ICLAMP.
1. Ensure the rotary selector switch is in the
position.
2. Connect the instrument as shown.3.
Connect the C1 and C2 terminals together
using the calibration lead supplied with the
ICLAMP [X and C terminals for DET3TC].
4. Ensure that the ICLAMP is not clamped
around a conductor.
5. Press and hold the
button and
switch instrument ON to the
A
setting using the selector switch.
6. Release the
button.
7. Press and hold the
button until a “0”
reading is obtained on the display
8. Close the ICLAMP around the calibration
lead which connects the C1 and C2
terminals [X and C terminals for DET3TC].
9. Press and hold the
button until a
“100” reading is obtained on the display.
10. Switch the instrument
using the
selector switch.
11. The instrument is now calibrated to the
ICLAMP and the calibration stored in non-
volatile memory.
OPERATION OF THE ICLAMP
Measurement of ground current
1. Ensure the rotary selector switch is in the
position.
2. Connect the instrument as shown.
OFF
OFF
TEST
TEST
TEST
TEST
OFF
ICLAMP
ICLAMP
Electrode
under test
ICLAMP
Installation
earthing
conductor
Potential spike
Electrode
under test
3 terminal
lead null
Current spike
DET4TC
DET4TCR
DET4TC
DET4TCR
DET4TC
DET4TCR
DET4TC
DET4TCR
