RS PRO IPM 241 User manual

EN

Instruction Manual
IPM 240 Series
Power Clamp Meters

IPM 240 Series English
2
SECTION 1 –SAFETY INFORMATION
Safety Information
Understand and follow operating instructions carefully.
Use the meter only as specied in this manual; otherwise, the protection provided by the
meter may be impaired.
WARNING
Identies hazardous conditions and actions that could cause BODILY HARM or DEATH
CAUTION
Identies conditions and actions that could DAMAGE the meter or equipment under test
WARNING
- Examine the instrument and probes before use. Do not use the instrument if it is
wet or damaged
- When using test leads or probes, keep your ngers behind the nger guards.
- Remove the test lead from the instrument before opening the battery cover or
instrument case.
- Always use the correct terminals, switch position and range for measurements.
- Never attempt a voltage measurement with the test leads inserted into the“A”
input terminals.
- Verify the instrument is operating correctly by measuring a known voltage before
use. If in doubt, have the instrument serviced.
- Do not apply more than the rated voltage, as marked on the instrument, between
terminals or between any terminal and earth ground.
- Do not attempt a current measurement when the open-circuit voltage is above
the fuse protection rating.
- Only replace a fuse with the correct type and rating as specied in this instruction
manual.
- Use caution when measuring voltages above 30 Vac rms or 60 Vdc. These
voltages pose a shock hazard.
- To avoid incorrect readings that can lead to electric shock, replace the battery as
soon as the low battery indicator appears in the display.
- Disconnect the circuit power and discharge all high-voltage capacitors before
making resistance, current, continuity, diode or capacitance measurements.
- Do not use the instrument in a hazardous area or around explosive gasses or
vapours.
- Wear suitable personal protective equipment when working around or near
hazardous live conductors which could be accessible.

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CAUTION
• Disconnect the test leads from the test points before changing the position
of the function rotary switch.
• Never connect a source of voltage with the function rotary switch in the
Ω, %, , µA, position.
• Do not expose the meter to extremes in temperature or high humidity.
• Never set the meter in Ω, %, , µA, function to measure the voltage of a power
supply circuit in equipment that could result in damage to the meter and the
equipment under test.
Symbols as marked on the Meter and Instruction
Unsafe Voltage
When the voltage measurement function “V” is selected, the “ ” symbol is displayed to
indicate the presence of a potentially hazardous voltage, when the tester detects a voltage
≧30 V or a voltage overload (OL)
Maintenance
Do not attempt to repair this meter. It contains no user serviceable parts.
Repair or servicing should only be performed by qualied personnel.
Risk of electric shock
See instruction manual
DC measurement
Equipment protected by double or reinforced Insulation
Battery
Earth
AC measurement
Conforms to EU directives
Application around and removal from hazardous live conductors is permitted
Dispose of in accordance with local regulations.
EN50419: 2006

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Cleaning
Periodically wipe the case with a dry cloth and detergent.
Do not use abrasives or solvents.
SECTION 2 - INTRODUCTION
Features
• 10000 count digital display
• Active display backlight and analogue bargraph
• VoltSense (Non contact Voltage)
• Analogue bargraph
• True RMS reading on AC and AC+DC mode
• Auto torch-light when clamp
• Auto AC/DC 1000 Amps capability and selection (For 245 only)
• Auto AC/DC 600 Amps capability and selection (For 243 only)
• Auto AC/DC 1000 Volts capability and selection
• Auto Ohms/Continuity/Diode selection
• 100kΩ resistance capability
• Continuity beeper
• Frequency counter
• Power and power factor measurement
• Total harmonics distortion and % harmonics 1 to 25
• Capacitance capability
• °C / °F temperature measurement function ( For 242/245 only)
• DCμA for ame rod testing ( For 242 only)
• Inrush current
• DCA Auto-zeroing key (For 243/245 only)
• Peak HOLD
• MIN/MAX HOLD
• Smart Data HOLD
• Phase rotation indication
• Low pass lter
• Auto power off
• Safety Standard: IEC 61010-1 CAT IV 600V / CAT. III 1000V
Unpacking and Inspection
Contents
1. IPM 240 series power clamp meter
2. Test leads set (one black, one red)
3. Temperature probe (For 242/245 only)
4. User manual
5. Carrying case
6. 9V alkaline battery (installed)

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SECTION 3 – METER DESCRIPTION
Power On/ Off
Power on

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Auto Power Off
The meter can work again by turning it on from the OFF position.
Auto Power Off (APO) disable :
Press the Navigator key “DOWN” while turning the meter on from the OFF position.
Navigator KEY
The Navigator key has 5 directions of switch on the display, toggle the navigator key to
select the desired feature and to activate the feature by a simple click.
After idle 15 min
RIGHTLEFT
DOWN
UP
CENTER

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SECTION 4- MEASUREMENTS
Making Basic Measurements
Before and after hazardous voltage measurements, test the voltage function on a known
source to determine proper meter functioning.
When connecting the test leads to the DUT (Device Under Test) connect the common test
lead before connecting the live lead; when removing the test leads, remove the live test
lead before removing the common test lead.
Voltage Measurement
Warning
To avoid electrical shock, hazard or damage to meter, do not attempt a measurement that
might exceed 1000 V DC or AC RMS. Do not apply more than 1000 V DC or AC RMS
between the common input terminal and earth ground.
Note - If the measured voltage is greater than 30 V DC or AC RMS, the display will show
the " " symbol.
V

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Current Measurement
CAUTION
Do not measure current from the clamp jaw when a temperature probe is connected
to the meter.
- Do not clamp on to any conductor until the instrument is switched on.
- IPM241/242/244 have only AC current measurement mode.
- Auto torch light when clamping.
OK
I
I
I+(-I)=0
OK
I
I
OK
I
Do not hold
the meter beyond
the Tactile Barrier
CAT. .600V
Hand Guard
earth for the jaw
with respect to
Tactile Barrier for
CAT. .1000V

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AUTO SENSE mode :
Display measurement result; AC only with RMS value or
DC value, whichever is greater.
AC mode : AC only with RMS value.
DC mode : DC value.
AC+DC mode : AC+DC RMS value.
Note
- Select " AC", " DC" or " AC+DC" indicator then press the navigator key to enter
the AC/DC/AC+DC mode.
- Select " AC"," DC" or " AC+DC" indicator then press the navigator key for more
than 2 seconds to return to the AUTO SENSE mode.
PEAK HOLD (AC mode only)
1. In ACV mode, select " " indicator on the display to enter PEAK HOLD mode.
To exit from PEAK HOLD mode, press the navigator key for more than 2 seconds.
2. In ACA mode, select " " indicator then press the navigator key for more than
2seconds to enter PEAK HOLD mode. To exit from PEAK HOLD mode, press
the navigator key for more than 2 second to return to the " " indicator.
"ENTER"
>2SEC

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In PEAK HOLD mode, the meter is activated to save the positive peak value and the
negative peak value. Positive peak value is displayed in PEAK MAX mode. Negative peak
value is displayed in PEAK MIN mode.
Inrush current : (AC mode only)
If inrush current during testing could be greater than 100A ac, select the range to
600A/1000A in advance before activating inrush current.
>2SEC
"ENTER"
>2SEC
After Tigger
Watting Tigger
ENTER

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DCA ZERO (For 243/245 only)
Remove the current clamp jaws from around the conductor.
Press HOLD key for greater than 2 seconds to compensate for the residual magnetism.
- DCA Zero is only available in Auto Sense, DC and AC+DC mode.
Frequency Measurement (AC mode only)
Select the "Hz" indicator then press the navigator key to enter/exit the frequency
measurement mode.
HOLD> 2 Sec
HOLD
"Hz"
ENTER

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MAX/MIN/AVG
Select the "MAX MIN" indicator then press the navigator key to enter the
MAX/MIN/AVG mode. To exit from the MAX/MIN/AVG mode, press the navigator
key for more than 2 seconds.
The MAX/MIN/AVG mode records the minimum and maximum input values. When the
inputs go below the recorded minimum value or above the recorded maximum value,
the meter records the new value. The MAX/MIN/AVG mode can also calculate the
average of the maximum value and the minimum value.
NOTE :
- Press HOLD key in MAX MIN mode to make the meter stop updating the maximum and
minimum value. When the HOLD mode is activated in MAX MIN mode, the HOLD mode
must be released before the MAX MIN mode.
"MAXMIN"
MAXMIN>2sec
"MAXMIN"
"MAXMIN"
"MAXMIN"
ENTER

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Total Harmonic Distortion Measurement (AC mode only)
Select the "THD" indicator then press the navigator key to enter the THD mode.
THD-F=RMS of Harmonics ÷ RMS of fundamental ×100%.(harmonics up to the 25th)
Individual Harmonic Measurement (AC mode only)
Select the " " indicator then press the navigator key to enter the individual harmonic
mode. To exit from the individual harmonic mode, press the navigator key for more than 2
seconds. Hn=RMS of Individual Harmonic ÷ RMS of fundamental ×100%.
"THD"
"ENTER"
"RIGHTWARD"
""
"LEFTWARD"
"DOWNWARD"
"UPWARD"
""
"LEFTWARD"
"RIGHTWARD"
"DOWNWARD"
"UPWARD"
ENTER
>2SEC

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Low Pass Filter (AC mode only)
Select the "LPF" indicator then press the navigator key to eliminate high frequency noise.
NOTE :
Peak Hold, Inrush, THD, Hz, Individual Harmonic and LPF mode are only available in AC
mode.
Active power (W) / Power factor(PF) measurement
1.Single Phase Power Measurement
Step1. Set the rotary switch to the "W" position.
Step2. Connect the red test lead to the L, and the black test lead to the N.
Step3. Press the trigger to open the transformer jaws and clamp one conductor only,
make sure that the jaw is rmly closed around the conductor.
Step4. Use the Navigator key to choose the "W/PF" mode.
NOTE :
- The “ + ” symbol on the jaw must face onto the power source side.
- In Autosense mode, the meter will displays ACW/DCW
depending on whether AC frequency been detected.
- IPM241/242/244 offer AC power measurement mode only.
Active power sign :
No sign : Indicates the power ows from the power source to the load.
"_" sign : Indicates the power ows from the load to the power source.
"LPF"
ENTER

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Power factor sign :
No sign : The phase of the current signal is lagging behind the voltage signal
(inductive load).
"_" sign : The phase of the current signal is leading the voltage signal
(capacitive load).
Over range display :
OL.U : Voltage overload
OL.A : Current overload
OL.UA : Both Voltage and Current overload.
± OL kW : Active Power > 1000 kW or < -1000 kW.
600A
600V
+L
-N
"W"
"PF"
ENTER

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2.Three Phase Power Measurement
A. 3 phase 3 wire balanced / unbalanced
Step1. Set the rotary switch to the "W" position
Step2. Using the Navigator key to choose the "W" mode.
32
1
W=W1+W2
Y or Star
Black Black
Red
Red

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B. 3 phase 4 wire balanced / unbalanced
Step1. Set the rotary switch to the "W" position
Step2. Using the Navigator key to choose the "W" mode.
3
2
1
N
Red
Black
Red
Black
Red
Black
W=W1+W2+W3

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Phase Rotation
NOTE :
- Connect the three phase of power source as shown above.
- The test is only available while the system frequency is stable.
Step 1. Set the rotary switch to the "W" position.
Step 2. Using the Navigator key to choose the "
RST
" mode
Step 3. Connect the red test lead to the supposed phase 1 conductor and the
black test lead to the supposed phase 3 conductor.
If the phases are correct “L1” is displayed and ashes for about 3 seconds.
Line 1
Line 2
Line 3

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NOTE:
The meter will not be able to determine the line phase if any of the following
conditions occur:
the screen displays “OLU” and ashes: voltage > 1000V
the screen displays “LoU” and ashes: voltage <30V
the screen displays “outF” and ashes: frequency > 65Hz or < 45Hz
Step 4. If “L2” is displayed and the buzzer sounds twice, reconnect the red test lead to the
supposed phase 2 conductor 2 immediately before “L2” disappears.
Step 5. When “L2” has disappeared, the test results will be displayed.
a. If “1 2 3 “ is displayed, then the phase sequence is forward sequence
b. If “ 3 2 1 ” is displayed, then the phase sequence is reversed sequence
c. If “ ” is displayed it is unable to determine the phases.
d. If “LoU” is displayed it is possible that the test leads were removed before the testing
procedures were complete.
Step 6 : To repeat the test, using the Navigator key to choose the
"
RST
" mode again.

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Resistance Measurement
CAUTION
To avoid possible damage to the meter or to the equipment under test, disconnect circuit
power and discharge all high voltage capacitors
before measuring resistance and testing diodes.
NOTE :
- Select Ω/ / indicator then press the navigator key to enter the Ω/ / mode.
- Select Ω/ / indicator then press the navigator key for more than 2 seconds
to return to the AUTO SENSE mode.
Note - Under diode test mode, if "bad" is displayed when measuring a diode, the diode
may be damaged.