Amprobe ACD-30P Скачать руководство пользователя страница 10 | Manualshive

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Amprobe ACD-30P Скачать руководство пользователя страница 10

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Measuring 3-Phase 4-Wire

(3 4W) Power Parameters:

In both un-balanced and balanced load cases, 3-Phase 4-Wire (3

4W) systems,

measure the phase-to-neutral powers kW

1,

kW

2

and kW

3

of each phase separately as

illustrated. System (total) power kW

Total

is the summation of all three phase-to-neutral

powers. That is:
kW

Total

= kW

1

+ kW

2

+ kW

3

(for both un-balanced and balanced load cases)

In balanced load cases, 3-Phase 4-Wire (3 4W) systems, the system (total) power
parameters can be simplified to three times of any of the phase-to-neutral powers. That
is:
kW

Total

= 3 x kW

1

(for balanced load cases only)

kVA

Total

= 3 x kVA

1

(for balanced load cases only)

kVAR

Total

= 3 x kVAR

1

(for balanced load cases only)

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Содержание ACD-30P

Страница 1: ...USER S MANUAL ACD 30P ACD 31P ACD 41PQ 1000A Clamp on Power Meters For detailed specifications and ordering info go to www TestEquipmentDepot com ...

Страница 2: ...g equipment to be supplied from the fixed installation Note Examples include household office and laboratory appliances OVERVOLTAGE CATEGORY III Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations Note Examples include switches in the fixed installation and some equipment for industrial use with permanent connection to the fixed installation OVERVOLTAGE CATEGORY IV Equipment ...

Страница 3: ...void accidental short circuit of bare uninsulated hazardous live conductors or busbars switch them off before insertion and removal of the current clamp jaws Contact with the conductor could result in electric shock Keep your hands fingers behind the hand finger barriers that indicate the limits of safe access of the meter and the test leads during measurement CAUTION Disconnect the test leads fro...

Страница 4: ...indicate the limits of safe access to the jaws during current measurements 4 Push buttons for special functions features 5 Input Jack for all functions EXCEPT non invasive ACA current thus Power function 6 Common Ground reference Input Jack for all functions EXCEPT non invasive ACA current thus Power function 7 Slide switch Selector to turn the power ON OFF and Select a function 8 LCD display 9 Ja...

Страница 5: ...nunciator dc or turns on respectively On the contrary with no voltage signal present on V COM terminals but a ACA current signal above the nominal threshold of AC 1A 40Hz 500Hz up to the rated 1000A is input via the jaws the meter displays the ACA current value LCD annunciator turns on accordingly The Auto VA feature stays at the auto selected function as long as its signal remains above the speci...

Страница 6: ...l Harmonic Distortion Fundamental function model ACD 41PQ only THD F Total Harmonics RMS Fundamental RMS x 100 Total Harmonic Distortion Fundamental THD F is the percentage ratio of the Total Harmonics RMS value to the Fundamental RMS value of a voltage or current signal and is given by the above expression An ideal sinusoidal waveform has a value of 0 THD A badly distorted sinusoidal waveform may...

Страница 7: ...en ACV or ACA function is auto selected or manual selected press and hold Peak rms button for one second or more toggles to this mode The LCD annunciators P Max turn on Note Manually disable the APO feature press hold the HOLD button while setting the slide switch function selector from any position to the position before using Peak rms mode for long term measurements HOLD mode Hold mode freezes t...

Страница 8: ...e current A leads voltage V phase shift angle θ and thus Sinθ are both True Power Factor encountering harmonics When encountering distorted waveforms with the presence of harmonics however the simplified power expression should not be used since substituting the above mentioned pure sinusoidal V and A functions cannot fulfill the actual conditions Cosine of phase shift angle Cosθ or the displaceme...

Страница 9: ...Note 1 When measuring load circuits with power absorptions as in most applications positive W Real Power readings indicate correct measurement setups Negative readings LCD annunciator turns on indicate either the clamp on jaws direction or the test leads polarity is reversed in such cases Correct the setups to get proper A lags indications 2 When encountering largely distorted waveforms A lags det...

Страница 10: ...otal is the summation of all three phase to neutral powers That is kWTotal kW1 kW2 kW3 for both un balanced and balanced load cases In balanced load cases 3 Phase 4 Wire 3 4W systems the system total power parameters can be simplified to three times of any of the phase to neutral powers That is kWTotal 3 x kW1 for balanced load cases only kVATotal 3 x kVA1 for balanced load cases only kVARTotal 3 ...

Страница 11: ...power kWTotal is the summation of the two measured power components That is kWTotal kW1 kW2 for both un balanced and balanced load cases In balanced load cases 3 Phase 3 Wire 3 3W systems the system total power parameters can be achieved by the following expressions kWTotal kW1 kW2 same as above kVATotal 3 x kVA1 for balanced load cases only kVARTotal kVATotal 2 kWTotal 2 for balanced load cases o...

Страница 12: ...ion selector to the Ω function position Default at last selected function Press SELECT button to toggle between Ω and measurement unctions f Backlighted display models ACD 31P ACD 41PQ only ress the SELECT button for 1 second or more to toggle the display backlight on or off P Auto Power Off APO The meter turns off after approximately 17 minutes of neither switch nor button activity To wake up the...

Страница 13: ...esignated function selector position This enables data output of the functions on that particular function selector position The LCD displays to confirm activation right after the Hz button is released Slide the function selector to any other positions then disables data output 5 MAINTENANCE WARNING To avoid electrical shock disconnect the meter from any circuit remove the test leads from the inpu...

Страница 14: ... Battery replacement The meter uses standard 1 5V AAA Size NEDA 24A or IEC LR03 battery X 2 Loosen the 2 captive screws from the battery cover case Lift the battery cover case Replace the batteries Replace battery cover case Re fasten the screws 6 Specifications General Specifications Display Voltage functions 6000 counts LCD display s Power Ohm Hz functions 9999 counts LCD display s ACA clamp on ...

Страница 15: ...V 1 2 50µs surge for all models Pollution degree 2 E M C Meets EN61326 1997 1998 A1 EN61000 4 2 1995 and EN61000 4 3 1996 an RF field of 3V m otal Accuracy Specified Accuracy 45 digits erformance above 3V m is not specified Overload Protections ACA Clamp on jaws AC 1000A rms continuous COM terminals all functions 600VDC VAC rms Power Supply standard 1 5V AAA Size NEDA 24A or IEC LR03 battery X 2 P...

Страница 16: ...aximum Crest Factor is as specified below and with frequency spectrums besides fundamentals fall within the meter specified AC bandwidth for non sinusoidal waveforms Fundamentals are specified at 50Hz and 60Hz AC Voltage RANGE Accuracy 50Hz 60Hz 600 0V 0 5 5d 45Hz 500Hz 600 0V 1 5 5d 500Hz 3 1kHz 600 0V 2 5 5d CMRR 60dB DC to 60Hz Rs 1kΩ Input Impedance 2MΩ 30pF nominal Crest Factor 2 3 1 at full ...

Страница 17: ...A AC 40Hz 500Hz only nominal Crest Factor 2 5 1 at full scale 5 0 1 at half scale for 40 00A 400 0A ranges 1 4 1 at full scale 2 8 1 at half scale for 1000A range 1 Induced error from adjacent current carrying conductor 0 06A A 2 Specified accuracy is from 1 to 100 of range and for measurements made at the jaw center When the conductor is not positioned at the jaw center position errors introduced...

Страница 18: ...A 600V range 30V THD F 1 model ACD 41PQ only RANGE Harmonic order Accuracy3 Fundamental 1 5 of Reading 6d 2nd 3rd 5 0 of Reading 6d 4th 16th 2 5 of Reading 6d 17th 46th 3 0 of Reading 6d 0 0 999 9 2 47th 51st 4 5 of Reading 6d 1 THD F is defined as Total Harmonic RMS Fundamental RMS x 100 2 Range for Dual Display mode 0 99 3 Specified accuracy ACA fundamental 5A ACV fundamental 50V Total Power Fac...

Страница 19: ...ments made WITHIN jaw marking lines away from jaw opening Accuracy is not specified for ACA measurement made BEYOND jaw marking lines toward jaws opening 2 Add 1 to specified accuracy ACA fundamental 5A or ACV fundamental 90V Accuracy is not specified ACA fundamental 1A or ACV fundamental 30V 3 Add 1 to specified accuracy ACA fundamental 5A or ACV fundamental 90V Accuracy is not specified ACA fund...

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