Megger DPM1000 User manual

DPM1000
User guide
EN

GSafety Information
Understand and follow the operating instructions carefully.
GWARNING
Identify hazardous conditions and actions that could cause BODILY HARM or DEATH
■When using test leads or probes, keep your fingers behind the finger guards.
■Personal protective equipment should be used if there are ACCESSIBLE HAZARDOUS
LIVE PARTS in the installation where measurement is to be carried out.
■Remove test leads from meter before opening the battery door or meter case.
■Use the meter only as specified in this manual; otherwise, the protection provided by
the meter may be impaired.
■Always use the proper input terminals, switch position, and range for measurements.
■Verify the meters operation by measuring a known voltage. If in doubt, have the meter
calibrated.
■Do not apply more than the rated voltage, as marked on the meter, between terminals
or between any terminal and earth.
■Use caution with voltages above 30 V AC rms, 42 V AC peak, or 60 V DC. These voltages
pose a shock hazard.
■To avoid false readings that can lead to electric shock and injury, replace the battery as
soon as the low battery indicator blinks.
■Disconnect circuit power and discharge all high-voltage capacitors before testing
resistance, continuity, diodes, or capacitance.
■Do not use the meter around explosive gas or vapour.
■To reduce the risk of fire or electric shock do not expose this product to rain or moisture.
■Probe assemblies to be used for MAINS measurements shall be RATED as appropriate
for MEASUREMENT CATEGORY III or IV according to EN 61010-031 and shall have a
voltage RATING of at least the voltage of the circuit to be measured.
■DO NOT USE the test leads if the internal white insulation layer is exposed.
■DO NOT USE the test leads above maximum ratings of CAT Environment or voltage and
current that are indicated on the probe and probe tip guard.
■Do not apply a current with a frequency that is higher than the frequency response
range specified in the Electrical Specifications section.
■Do not apply or remove the clamp or test leads on or around uninsulated hazardous live
conductors where a potential to cause electric shock, electrical burns or arc flash exists.
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GCAUTION
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 Ω, , and
position.
Do not expose meter to extremes of temperature or high humidity.
Symbols as marked on the Meter and Instruction manual
FRisk of electric shock
GSee instruction manual
dDC measurement
kBoth direct and alternating current
tEquipment protected by double or reinforced insulation
Battery
gEarth
aAC measurement
Bluetooth
cConforms to EU directives
Application around and removal from hazardous live conductors
is permitted
Do not discard this product or throw away.
CATIV
Measurement category IV: Equipment connected between the origin of the low-voltage
mains supply outside the building and the consumer unit.
CATIII
Measurement category III: Equipment connected between the consumer unit and the
electrical outlets.
CATII
Measurement category II: Equipment connected between the electrical outlets and the
user’s equipment.
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Unsafe voltage
To alert you to the presence of a potentially hazardous voltage, when the tester detects a
voltage ≦30 V or a voltage overload (OL) in V, the symbol is displayed.
Features
■10000 Count digital display
■Active backlight with large scale display
■VoltSeek (Non-contact voltage detection)
■Analog bar graph
■True RMS reading on AC and AC+DC mode
■Memory Save/Load (up to 1000 records)
■Data logger (up to 9999 sample values)
■Bluetooth communication
■Torch turns on when clamp jaws open
■Auto selecting 1000 A AC/DC current measurement
■Auto selecting 1000 V AC/DC voltage measurement
■100 kΩ Resistance measurement
■Continuity beeper
■Frequency counter
■Power and power factor measurement
■Total harmonics distortion
■Harmonics measurement: 1st to 25th
■Capacitance capability
■°C/°F Temperature function
■Inrush current
■DCA auto-zeroing button
■Peak hold
■Max/Min hold
■Smart data hold
■Phase rotation
■High frequency noise rejection filter
■Auto power off (APO)
■CAT IV 600 V/CAT III 1000 V safety standard
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Unpacking and inspection
Upon removing your new Power Clamp Meter from its packing, you should have the
following items:
1. Megger DPM1000 Power Clamp Meter
2. Test lead set (one black, one red)
3. Test probes (one black, one red)
4. Crocodile clips (one black, one red)
5. TP100 Temperature probe
6. User Manual
7. Carry case
8. Batteries
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The Meter Description
1. Jaw
2. VoltSeek LED
3. Jaw trigger
4. Rotary function switch
5. LCD display
6. Function / Operation push
buttons
7. + input terminal
8. Common input terminal
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Power On / Off
Auto Power Off
The meter can operate again by turning it on from the OFF position.
After turning on the meter, the
LCD will show Full, hAlf, and Lo to
indicate the battery capacity.
After 15 minutes of no activity
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Auto Power Off (APO) disable:
Press OK button while turning meter on from the OFF position.
Push Buttons
Menu Operation
Bluetooth
LEFT
UP/DOWN
RIGHT
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Example
Making basic measurements
When connecting the test leads to the DUT (Device Under Test) connect the common test
lead before connecting the live test lead. When removing the test leads, remove the live
test lead before removing the common test lead.
Use Arrow keys to move the blinking
cursor to the target icon, and then press
OK button
Use Arrow keys to move the blinking cursor
to the target icon, and then press OK
button for more than 2 sec.
The icon without an underline means the
function is not selected.
The icon with an underline means the
function is selected.
Preparation and Caution Before Measurement
G: Observe the rules of GWarnings and GCautions
The figures on the following pages show how to make basic measurements.
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Measuring voltage
GWarning
To avoid an electrical shock, hazard or damage to the meter, do not attempt a
measurement that might exceed 1000 V DC or AC RMS.
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Measuring current
- The torch turns on when the clamp jaws open.
GCAT IV 600 V CAT III
1000 V with respect to
earth for the jaw.
Fixed Barrier hand guard.
GDo not hold the meter
above the fixed barrier
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AUTO SENSE mode:
Displays measurement result for AC only with RMS value or DC value, it depends on
whichever is greater.
AC mode: AC only with RMS value.
DC mode: DC value.
AC+DC mode: AC+DC RMS value.
Note Press MODE button to enter the AC/DC/AC+DC mode.
Press MODE button for more than 2 seconds to return to the AUTO SENSE
mode.
PEAK HOLD (AC mode only)
ACV mode
>2SEC
>2SEC
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ACA mode
In PEAK HOLD mode, the meter will save the positive peak value and negative peak value.
Positive peak value is displayed in PEAK MAX mode. Negative peak value is displayed in
PEAK MIN mode.
>2SEC >2SEC
>2SEC
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Inrush current : (AC mode only)
If the measured inrush current could be greater than 100 A AC, please set the range to
1000 A prior to activating inrush current.
After trigger even
Motor off Trigger
point
Motor on Time
Waiting for trigger
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DCA ZERO
Remove the clamp away from the conductor.
Press the HOLD Key > 2 seconds to compensate for any residual magnetism.
- DCA Zero is available in Auto Sense, DC and AC+DC modes.
Measuring Frequency (AC mode only)
Select the “Hz” icon then press the OK button to enter/exit the frequency measurement
mode.
> 2 Sec
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MAX/MIN/AVG (MMA)
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 readings.
NOTE: Press the HOLD key in Max/Min/AVG mode to stop the meter updating the
maximum, minimum and average values. HOLD mode must be turned off to continue
updating values.
>2sec
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Harmonic measurement ( AC mode only)
THD-F=RMS of Harmonics ÷ RMS of fundamental ×100%.
(harmonics up to the 25th)
Hn=RMS of Individual Harmonic ÷ RMS of fundamental ×100%.
Press RANGE button to display harmonic order or the value of the harmonic (unit: %).
the value of h01
the value of h25
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HFR (High Frequency Rejection - AC mode only)
Select the “HFR” indicator then press the OK button to eliminate high frequency noise.
NOTE:
Peak Hold, Inrush Current, HZ, Harmonic and HFR are only available in AC mode.
Measuring Active power (W)/Power factor (PF)
1. Single Phase Power Measurement
Step 1. Set the rotary switch to the “W” position.
Step 2. Connect the Black test lead to the N and the Red test lead to the L.
Step 3. Press the trigger to open the transformer jaws and clamp one conductor
only, making sure that the jaw is firmly closed.
Step 4. Use the MODE button to select the “DCW/PF” mode.
NOTE: - In AutoSense mode the meter will display DCW until an AC frequency has been
detected.
Active power sign:
(The current direction must be the same as the figure below)
No sign: Indicates the power flows from the power source to the load. “_” sign: Indicates
the power flows from the load to the power source.
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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).
Overrange display:
OL.U: Voltage overload
OL.A: Current overload
± OL kW: Active Power > 1050 kW or < -1050 kW.
Measuring active power (W)/Power factor (PF) cont
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Three phase power measurement 3 phase 3 wire balanced / unbalanced
Step 1. Set the rotary switch to the “W” position
Step 2. Using the MODE button, choose ACW.
Red
Red
Load
Black
Black
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