Amprobe ACD-51NAV, ACDC-52NAV Operating Manual

ACD-50NAV

600A AC Navigator Clamp

ACD-51NAV

600A AC TRMS
Navigator Clamp

ACDC-52NAV

600A AC / DC TRMS
Navigator Clamp

ACD-53NAV

1000A AC TRMS
Navigator Clamp

ACDC-54NAV

1000A AC / DC TRMS
Navigator Clamp

Users Manual

• Mode d’emploi

• Bedienungshandbuch

• Manual d’Uso

• Manual de uso

1

ACD-50NAV

600A AC Navigator Clamp

ACD-51NAV

600A AC TRMS Navigator Clamp

ACDC-52NAV

600A AC/DC TRMS Navigator Clamp

ACD-53NAV

1000A AC TRMS Navigator Clamp

ACDC-54NAV

1000A AC/DC TRMS Navigator Clamp

Users Manual

07/ 2013, Rev.2
©2013 Amprobe Test Tools.
All rights reserved. Printed in Taiwan

English

Limited Warranty and Limitation of Liability
Your Amprobe product will be free from defects in material and workmanship for 1
year from the date of purchase. This warranty does not cover fuses, disposable batteries
or damage from accident, neglect, misuse, alteration, contamination, or abnormal
conditions of operation or handling. Resellers are not authorized to extend any other
warranty on Amprobe’s behalf. To obtain service during the warranty period, return the
product with proof of purchase to an authorized Amprobe Test Tools Service Center or
to an Amprobe dealer or distributor. See Repair Section for details. THIS WARRANTY
IS YOUR ONLY REMEDY. ALL OTHER WARRANTIES - WHETHER EXPRESS, IMPLIED OR
STAUTORY - INCLUDING IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE
OR MERCHANTABILITY, ARE HEREBY DISCLAIMED. MANUFACTURER SHALL NOT BE
LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES
OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some states or countries
do not allow the exclusion or limitation of an implied warranty or of incidental or
consequential damages, this limitation of liability may not apply to you.

Repair
All test tools returned for warranty or non-warranty repair or for calibration should
be accompanied by the following: your name, company’s name, address, telephone
number, and proof of purchase. Additionally, please include a brief description of
the problem or the service requested and include the test leads with the meter. Non­warranty repair or replacement charges should be remitted in the form of a check, a
money order, credit card with expiration date, or a purchase order made payable to
Amprobe® Test Tools.

In-Warranty Repairs and Replacement – All Countries
Please read the warranty statement and check your battery before requesting repair.
During the warranty period any defective test tool can be returned to your Amprobe®
Test Tools distributor for an exchange for the same or like product. Please check the
“Where to Buy” section on www.amprobe.com for a list of distributors near you.
Additionally, in the United States and Canada In-Warranty repair and replacement units
can also be sent to a Amprobe® Test Tools Service Center (see below for address).

Non-Warranty Repairs and Replacement – US and Canada
Non-warranty repairs in the United States and Canada should be sent to a Amprobe®
Test Tools Service Center. Call Amprobe® Test Tools or inquire at your point of purchase
for current repair and replacement rates.

In USA In Canada
Amprobe Test Tools Amprobe Test Tools
Everett, WA 98203 Mississauga, ON L4Z 1X9
Tel: [phone] Tel: [phone]
Fax: [phone] Fax: [phone]

Non-Warranty Repairs and Replacement – Europe
European non-warranty units can be replaced by your Amprobe® Test Tools distributor
for a nominal charge. Please check the “Where to Buy” section on www.amprobe.com
for a list of distributors near you.

Amprobe® Test Tools Europe
In den Engematten 14
79286 Glottertal, Germany
tel: [phone] - 0

*(Correspondence only – no repair or replacement available from this address. European
customers please contact your distributor.)customers please contact your distributor.)

ACD-50 Series CAT IV Navigator Clamps Series

1

2

4

3

5

6

7

Jaw

1

Voltsense Light

2

Trigger

3

Hold / DCA Zero Key

4

Rotary Switch

5

Display

6

Navigator Key

7

V /  /  Input

8

Common Input

9

8

9

CONTENTS

SYMBOLS ........................................................................................................ 1

UNPACKING AND INSPECTION ...................................................................... 2

FEATURES ........................................................................................................ 2

OPERATION ..................................................................................................... 3

Making Basic Measurement ...................................................................... 4

Measuring Voltage ..................................................................................... 5

Measuring Current ..................................................................................... 6

Auto Sense Mode ....................................................................................... 7

Peak Hold ................................................................................................... 7

Inrush Current ............................................................................................ 8

DC A ZERO .................................................................................................. 9

Measuring Frequency ................................................................................ 9

MAX/MIN/AVG ............................................................................................ 9

THD Measurement ..................................................................................... 10

LPF ............................................................................................................... 11

Measuring Active Power (W) / Power factor (PF) ..................................... 12

Phase Rotation ........................................................................................... 14

OHM Measurements .................................................................................. 15

Measuring Capacitance ............................................................................. 16

Measuring Temperature °C / °F ................................................................. 17

Measuring μA Current ............................................................................... 18

AUTO / Manual Range ............................................................................... 19

HOLD Key ................................................................................................... 19

VoltSense .................................................................................................... 20

Buzzer ......................................................................................................... 20

Power-up Option........................................................................................ 20

Battery State Display .................................................................................. 20

SPECIFICATION ................................................................................................21

MAINTENANCE AND REPAIR ......................................................................... 27

Trouble Shooting........................................................................................27

Cleaning and Storage ................................................................................ 27

Battery Replacement ................................................................................. 27

SYMBOLS

Caution ! Risk of electric



shock
Application around and

removal from hazardous live



conductors is permitted.
Alternating Current (AC).



Temperature Measurement

Capacitance Measurement



Continuity Beeper



To alert you to the presence
of a potentially hazardous
voltage, when the Meter



detects a voltage ≧30 V or a
voltage overload (OL) in V.
This symbol is displayed.

Conform to relevant



Australian standards

Do not dispose of this product as unsorted municipal waste.



Contact a qualified recycler



Caution ! Refer to the



explanation in this Manual
Equipment protected

by double or reinforced



insulation
Direct Current (DC).



Resistance Measurement



Diode Measurement



Earth (Ground)



Complies with European



Directives

Battery

Safety Information

• Individual protective equipment should be used if HAZARDOUS LIVE

parts in the installation where measurement is to be carried out
could be ACCESSIBLE

• This manual contains information and warnings that must be

followed for operating the instrument safely and maintaining the
instrument in a safe operating condition. If the instrument is used in
a manner not specified by the manufacturer, the protection provided
by the instrument may be impaired.

• The meter is intended only for indoor use.

• The meter protection rating, against the users, is double insulation

per IEC/EN 61010-1 3rd Ed, Category III 1000 Volts AC & DC and
Category IV 600 Volts AC & DC.

• 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

, , , μA, position.

• Do not expose Meter to extremes in temperature or high humidity.

• Never set the meter in

of a power supply circuit in equipment that could result in damage
the meter and the equipment under test.

, , , μA, function to measure the voltage

1

Measurement category:
V : Category III 1000 Volts AC & DC, and Category IV 600 Volts AC & DC.
A : Category III 1000 Volts AC & DC, and Category IV 600 Volts AC & DC.

Per IEC 61010-1 3rd Ed. Measurement Category

Measurement Category IV (CAT IV) is for measurements performed at the
source of the low-voltage installation. Examples are electricity meters and
measurements on primary overcurrent protection devices and ripple control
units.

Measurement Category III (CAT III) is for measurements performed in
the building installation. Examples are measurements on distribution
boards, circuit- breakers, wiring, including cables, bus-bars, junction
boxes, switches, socket-outlets in the fixed installation, and equipment for
industrial use and some other equipment, for example, stationary motors
with permanent connection to the fixed installation.

WARNING



To reduce the risk of fire or electric shock, do not expose this product to
rain or moisture. To avoid electrical shock hazard, observe the proper
safety precautions when working with voltages above 60 VDC or 30 VAC
rms. These voltage levels pose a potential shock hazard to the user. Do not
touch test lead tips or the circuit being tested while power is applied to the
circuit being measured. Keep your fingers behind the finger guards of the
test leads during measurement. Inspect test leads, connectors,

and probes for damaged insulation or exposed metal before using the
instrument. If any defects are found, replace them immediately. Only use
the accompanied test leads, or replace with the same rating or better.

UNPACKING AND INSPECTION

Your shipping carton should include:

1 Power clamp meter
1 Test leads (1 pair)
1 Temp. adapter and probe (for ACD-51NAV and ACDC-54NAV only)
1 Users Manual
1 Carrying case
1 9V alkaline battery (installed)

If any of the items are damaged or missing, return the complete package to
the place of purchase for an exchange.

FEATURES

• True RMS

• Measurements:

o Voltage up to 1000V AC/DC, Resistance, Frequency, THD (Total

Harmonics Distortion) and Individual Harmonics 1 to 25, Power,
Power Factor

o AC Current

- Up to 600A (ACD-50NAV, ACD-51NAV, ACDC-52NAV)

- Up to 1000A (ACD-53NAV, ACDC-54NAV)

2

o DC Current

- Up to 600A (ACDC-52NAV)

- Up to 1000A (ACDC-54NAV)
o Capacitance
o Temperature Measurement in °C / °F (ACD-51NAV, ACDC-54NAV

only) - Temp. adapter and probe included

o DC Micro Amps (ACD-51NAV only)

• Phase Rotation Indication

• Non-contact voltage detection

• Inrush Current measurement for motors

• Low Pass Filter for variable frequency drives

• Continuity Beeper

• Min, Max and Smart Data Hold

• Peak Hold

• Auto torch-light when clamping

• Large 10000 count display with active backlight and analog Bar graph

• Auto Power Off

• Maximum Jaw Opening 1.77” (45mm)

• 4 feet Drop Proof

• Deluxe Carrying Case Included

• CAT IV 600V /CAT III 1000V Safety Standard

OPERATION
Power On / Off

3

Power on

Auto Power Off

After idle 15 min

The meter can work again by turning it on from the OFF position.

Auto Power Off (APO) disable : Press “Downward” of Navigator key while
tuning meter on from OFF position.

Navigator Key

UP

LEFT

ENTER

RIGHT

DOWN

The Navigator Key has 5 directions of switch on the display, toggle the
navigator key to select the desired feature to activate the feature by a
simple click.

Making Basic Measurements

CAUTION

Before and after hazardous voltage measurements, test the voltage
function on a known source such as line voltage to determine proper meter
functioning.

When connecting the test leads to the EUT (Equipment Under Test) connect
the common test lead before connecting the live lead; when removing the
test leads, remove the test live lead before removing the common test lead.

4

Measuring Voltage

V

WARNING

To avoid electrical shock, hazard or damage to meter, do not attempt to
measurement that might exceed 1000 V DC or AC RMS. Do not apply more
than 1000 V DC or AC RMS to the input terminals.

Note - If the measured voltage is higher than 30 V DC or AC RMS, the
display will show “

” symbol.

5

Measuring Current

I

CAT IV 600V, CAT III
1000V with respect to
earth for the jaw. Tactile
Barrier for hand guard.

Do not hold the
meter across the Tactile
Barrier.

I

OK

I

OK

- Don’t clamp on any conductor while the meter power on.

- ACD-50NAV, ACD-51NAV or ACD-53NAV has only AC current
measurement mode.

- Torch lighting when clamping.



CAUTION

Please do not measure current from clamp jaw when temperature probe is
connected to meter.

6

I

I

OK

I+(-I)=0

AUTO SENSE mode:

Display measurement result at 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:

• 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 PEAK HOLD mode, press the navigator key for
more than 2 seconds.

"ENTER"

>2SEC

2. In AC A mode, select “ ” indicator then press the navigator key for
more than 2 seconds to enter PEAK HOLD mode. To exit PEAK HOLD
mode, just press the navigator key for more than 2 seconds to return
to the “

” indicator.

>2SEC

"ENTER"

>2SEC

7

In PEAK HOLD mode, the meter is activated to 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.

Inrush Current : (AC mode only)

If the under testing inrush current could be bigger than 100A ac, please
select the range to 600A/1000A in advance before activating inrush current.

In ACA mode, select “
mode. To exit Inrush Current mode, press the navigator key again.

” indicator on the display to enter Inrush Current

Loading

ENTER

Inrush current reading

8

DC A ZERO (For ACDC-52NAV, ACDC-54NAV Only)

Remove the jaw out of the conductor.
Press HOLD Key > 2 seconds to compensate the residual magnetism.

HOLD> 2 Sec

HOLD

- DC A Zero is only available in Auto Sense, DC and AC+DC mode.

Measuring Frequency (AC mode only)

Select the “Hz” indicator then press the navigator key to enter/exit the
frequency measurement mode.

"Hz"

ENTER

MAX/MIN/AVG

Select the “MAX MIN” indicator then press the navigator key to enter the
MAX/MIN/AVG mode. To quit 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 record minimum value or above the
record 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.

9

"MAXMIN"

"MAXMIN"

ENTER

MAXMIN >2sec

"MAXMIN"

"MAXMIN"

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 deactivated

before the MAX MIN mode.

THD 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)

"THD"

"ENTER"

10

Individual Harmonic Measurement (AC mode only)

Select the “ “ indicator then press the navigator key to enter the
individual harmonic mode. To quit from the individual harmonic mode,
press the navigator key for more than 2 seconds.

Hn=RMS of Individual Harmonic ÷ RMS of fundamental ×100%.

" "

>2SEC

ENTER

" "

"RIGHTWARD"

"LEFTWARD"

"UPWARD"

"DOWNWARD"

"RIGHTWARD"

"LEFTWARD"

"UPWARD"

"DOWNWARD"

LPF (AC mode only)

Select the “LPF” indicator then press the navigator key to eliminate high
frequency noise

"LPF"

ENTER

Note : Peak Hold, Inrush, THD, HZ, individual Harmonic and LPF mode are
only available in AC mode.

11

Measuring Active Power (W) / Power factor (PF)

1. Single Phase Power Measurement

Step1. Set the rotary switch to the “W” position.
Step2. Connect the Red test lead to the Line conductor, and the Black

test lead to the Neutral conductor.
Step3. Press the trigger to open the transformer jaws and clamp one

conductor only, make sure that the jaw is firmly closed around the
conductor.

Step4. Using the Navigator key to choose the “W/PF” mode.

Note :

• The “ + ” symbol on the jaw must face on the power source side.

• In AutoSense mode, the meter will displays ACW/DCW depends on if

there is AC frequency detected.

• ACD-50NAV, ACD-51NAV and ACD-53NAV offer AC power

measurement mode only.

Active power sign :
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.

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.UA : Both Voltage and current overload.
± OL kW : Active Power > 1000 kW or < -1000 kW.

600V

600A

+L

-N

"PF"

ENTER

"W"

12

2.Three Phase Power Measurement

A. 3 phase 3 wire balanced / unbalanced

Step 1. Set the rotary switch to the “W” position
Step 2. Using the Navigator key to choose the “W” mode.

Black

W=W1+W2

2

Red

Red

Black

1

3

Wye or star

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.

W=W1+W2+W3

N

1

2

3

Black

Red

Black

Black

Red

Red

13

Phase Rotation

Line 1

Line 2

Line 3

Note :

• Connect 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 “
Step 3. Connect the Red test lead and Black test lead to any of the

line conductor (e.g. Red test lead to the phase Line 1, and Black test
lead phase Line 3).

Note: If the followings occur, the meter will not be able to
determine the line phase:

The screen displays “OLU” and blinking: voltage > 1000V
The screen displays “LoU” and blinking: voltage < 30V
The screen displays “outF” and blinking: frequency > 65Hz or < 45Hz
Step 4. When the BUZZER beeps twice, change one of the test lead

to another line conductor within 3 seconds

The screen will display the result as below:

“ mode

a) If it displays “ 1 2 3 “, then the phase sequence is forward
sequence

b) If it displays “ 3 2 1 ”, then the phase sequence is reversed
sequence

14

c) When displayed “- - - - “ means it is unable to determine line
phases.

d) If it displays “LoU”, it is possible that you remove the test leads
before the meter completing its testing procedures.

Step 5. To repeat the test, using the Navigator key and choose the
“

“ mode again.

OHM 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 diode.

Note:

• Select

 /  /  indicator then press the navigator key to enter the

 /  /  mode.

 /  /  indicator then press the navigator key for more

• Select

than 2sec to return to the AUTO SENSE mode.

Note: Under diode mode: when the screen displays “bad” when

measuring a diode, the diode may have been damaged.

15

Measuring Capacitance

Set the rotary switch to the ““ position.

Capacitance

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 capacitance. Use the DC voltage function to confirm that the
capacitor is discharged.

Note: The meter will display “diSC” while discharging the capacitor.

16

Measuring Temperature °C / °F

( For ACD-51NAV and ACDC-54NAV Only)

Set the rotary switch to the “ ” position.

"°F"

ENTER

Don’t take any high voltage measurement prior to accurate °C/°F
measurements.

17

Measuring μA Current (For ACD-51NAV Only)

Set the rotary switch to the μA position.

Disconnect

18

Other Function :

AUTO/MANUAL Range

Select the “RANGE“ indicator, then press the navigator key to enter the
manual range mode. To return to the auto range mode, press the navigator
key for more than 2 seconds.

"Range"

"ENTER"

"Range"

"Range"

>2SEC

HOLD Key

Press HOLD key to freeze display value.

Press

Hold key

SMART HOLD: The meter will beep continuously and the display will flash if
the measured signal is larger than the display reading. (for V.A.W function)

19

VoltSense

The red diamond shape of LED will illuminate, if there has electric field
been detected from the jaw.

Buzzer

The Meter beeps once for every valid key-press, and beeps twice for every
invalid key-press.

Power-up options

Press one of the following keys while turning meter on from OFF position.

Upward of Navigator key: Display of the software version.
Downward of Navigator key: Disable auto power off.
Leftward of Navigator key: Disable active backlight.

HOLD KEY: Display all LCD symbols approx 10 seconds.

Battery State display

User can know the battery state from the battery indicator

Batter State Description

The battery is fully charged

The battery is remained 2/3 power

The battery is remained 1/3 power

Replace the battery as soon as the low
battery indicator appears, to avoid
inaccurate reading.

Refer to MAINTENANCE AND REPAIR section for battery replacement.

20

SPECIFICATIONS

General Specications
Display count : 10000 or 4000

Measuring rate : 3 times / per second
Overrange display : “OL” or “-OL” .
Auto Power Off : Approx. 15 minutes.

Low battery indicator :

indicator appears in the display.

Power requirement : 9V battery.
Battery life : ALKALINE 9V 50 hours (without Backlight).

is displayed. Replace the battery when the

Environmental Conditions

Indoor Use
Calibration: One year calibration cycle.
Operating temperature: 0 °C ~ 10 °C

11 °C ~ 30 °C (≦80% RH)
30 °C ~ 40 °C (≦75% RH)
40 °C ~ 50 °C (≦45%RH)

Storage temperature: -10 to 50 °C for current,

-20 to 60 °C for other function,
0 to 80% RH (batteries not fitted).

Temperature coefcient: 0.2 x (Specified accuracy) / °C, < 18°C, > 28°C .
Over voltage category: CAT IV 600 V, CAT III 1000 V : IEC61010-2-030 and

61010-2-032

CAT Application eld

I The circuits not connected to mains.

II The circuits directly connected to Low-voltage installation.

III The building installation.

IV The source of the Low-voltage installation.

CENELEC Directives: The instrument conforms to CENELEC Low-voltage
directive 2006/95/EC and Electromagnetic compatibility directive 2004/108/
EC.

Safety Compliance:

- IEC/EN 61010-1 Ed. 3.0, UL 61010-1(2nd Ed.), CAN/CSA-C22.2 No.61010­1-04 to Measurement Category III 600 V, Pollution Degree 2

- IEC/EN 61010-2-030

- IEC/EN 61010-2-032, CAN/CSA-C22.2 No.61010-2-032-04

- IEC/EN 61010-031 (test leads)

EMC: meets all applicable requirements in IEC/EN 61326-1
Operating altitude: up to 2000m (6562 ft)
Conductor Size:

37mm diameter for ACD-50NAV, ACD-51NAV, ACDC-52NAV
42mm diameter for ACD-53NAV, ACDC-54NAV

Shock vibration: Sinusoidal vibration per MIL-T- 28800E (5 ~ 55 Hz, 3g
maximum).

Drop Protection: 4 feet drop to hardwood on concrete floor.

21

Electrical Specications

Accuracy is ±(% reading + number of digits) at 23°C ± 5°C < 80%RH.

(1) Voltage

ACD-50NAV, ACD-51NAV, ACDC-52NAV, ACD-53NAV, ACDC-54NAV

Function Range Accuracy*

DC V

AC V

LPF

* DCV <1000dgt, add 6 dgt to the accuracy. ACV <1000dgt, add 3 dgt to the
accuracy.

Overload protection: 1000Vrms

Input Impedance: 3.5M // <100pF
AC Conversion Type: AC Conversions are ac-coupled, true RMS responding,

calibrated to the RMS value of a sine wave input. Accuracies are given for
sine wave at full scale and nonsine wave below half scale. For non-sine
wave (50/60Hz) add the following Crest Factor corrections:

For Crest Factor of 1.4 to 2.0, add 1.0% to accuracy.
For Crest Factor of 2.0 to 2.5, add 2.5% to accuracy.
For Crest Factor of 2.5 to 3.0, add 4.0% to accuracy.
CF 3 @ 460V,460A (for ACD-53NAV, ACDC-54NAV),
280A (for ACD-50NAV, ACD-51NAV, ACDC-52NAV)
2 @ 690V, 690A (for ACD-53NAV, ACDC-54NAV),
420A (for ACD-50NAV, ACD-51NAV, ACDC-52NAV)

AC+DC Vrms Accuracy: same as ACV spec. +DCV spec.

99.99V

999.9V

99.99V

999.9V

99.99V

999.9V

± (0.7% + 2dgt)

± (1.0% + 5dgt)

50 ~ 500Hz

50 ~ 60Hz ± (1% + 5dgt)

61 ~ 400Hz ± (5% + 5dgt)

(2) Current

ACD-50NAV, ACD-51NAV, ACD-53NAV

Function Range Accuracy

AC A

LPF

AC A

* ACD-50NAV, ACD-51NAV: 599.9A; ACD-53NAV : 999.9A
** The measured value <1000dgt, add 5 dgt to the accuracy.

99.99A

599.9A / 999.9A*

0.10A ~ 99.99A

599.9A / 999.9A*

50 ~ 60Hz ± (1.5% + 5dgt) **
61 ~ 400Hz ± (2% + 5dgt) **

50 ~ 60Hz ± (1.5% + 5dgt) **
61 ~ 400Hz ± (5% + 5dgt) **

22

ACDC-52NAV, ACDC-54NAV

Function Range Accuracy

DC A

AC A

LPF

AC A

* ACDC-52NAV: 599.9A ; ACDC-54NAV: 999.9A
** The measured value <1000dgt, add 5 dgt to the accuracy.

Overload protection: 1000Arms For ACD-53NAV, ACDC-54NAV
600Arms For ACD-50NAV, ACD-51NAV, ACDC-52NAV

Position Error: ±1% of reading.
AC Conversion Type and additional accuracy is same as AC Voltage.
AC+DC Arms Accuracy: Same as ACA spec + DCA spec.

• For better measurement accuracy of high current, do not

measurement more than 10 minutes (for ACD-50NAV, ACD-51NAV,
ACD-53NAV)

• DC A affected by the temperature and the residual magnetism.

Press HOLD key > 2 seconds to compensate it.

(3) Peak Hold : Peak MAX / Peak MIN

Function Range Accuracy

AC V

AC A

99.99A ± (1.5% + 0.2A)

599.9A / 999.9A* ± (1.5% + 5dgt) **

0.10A ~ 99.99A

599.9A / 999.9A*

0.10A ~ 99.99A

599.9A / 999.9A*

ACD-50NAV, ACD-51NAV, ACDC-52NAVV

140.0V

1400V

140.0A

850A

50 ~ 60Hz ± (1.5% + 5dgt) **
61 ~ 400Hz ± (2% + 5dgt) **

50 ~ 60Hz ± (1.5% + 5dgt) **

61 ~ 400Hz ± (5% + 5dgt) **

± (3.0% + 15dgt)

± (3.0% + 15dgt)

ACD-53NAV, ACDC-54NAV

Function Range Accuracy

AC V

AC A

Overload protection: 1000 Vrms
600 Arms For ACD-50NAV, ACD-51NAV, ACDC-52NVA
1000 Arms For ACD-53NAV, ACDC-54NAC

Accuracy dened for:

Sine wave, ACV>5Vrms / ACA

• Only suitable for the repetitive events.

140.0V

1400V

140.0A

1400A

± (3.0% + 15dgt)

± (3.0% + 15dgt)

≧5Arms, Freq. 50~400Hz.

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(4) Frequency

ACD-50NAV, ACD-51NAV, ACDC-52NAV, ACD-53NAV, ACDC-54NAV

Function Range Accuracy

20.00 ~ 99.99Hz

Frequency

0.020 ~ 9.999KHz

Overload protection : 1000 Vrms
600 Arms For ACD-50NAV, ACD-51NAV, ACDC-52NAV
1000 Arms For ACD-53NAV, ACDC-54NAV

Sensitivity :

10~100Vrms for AC 100V range
10~100Arms for AC 100A range ( >400Hz Unspecified)
100~1000Vrms for AC 1000V range
100~600/1000Arms for AC 600A/1000A range ( >400Hz Unspecified)

- Reading will be 0.0 for signals below 10.0 Hz.

(5) Total Harmonic Distortion:

ACD-50NAV, ACD-51NAV, ACDC-52NAV, ACD-53NAV, ACDC-54NAV

Function Range Accuracy

AC A / AC V 99.9% ± (3.0% + 10dgt)

Harmonic distortion measurement:

ACD-50NAV, ACD-51NAV, ACDC-52NAV, ACD-53NAV, ACDC-54NAV

Harmonic order Range Accuracy

H01 ~ H12

H13 ~ H25 ± (10% + 10dgt)

Overload protection: 1000 Vrms
600 Arms For ACD-50NAV, ACD-51NAV, ACDC-52NAV
1000 Arms For ACD-53NAV, ACDC-54NAV

• If ACV<10Vrms or ACA <10Arms, it will display “rdy”.

• If the fundamental frequency out of range 45 ~ 65Hz, it will display

“out.F”.

99.9%

± (0.5% + 3dgt)20.0 ~ 999.9Hz

± (5% + 10dgt)

(6) Inrush Current:

ACD-50NAV, ACD-51NAV, ACDC-52NAV, ACD-53NAV, ACDC-54NAV

Function Range Accuracy

AC A

* ACD-50NAV, ACD-51NAV, ACDC-52NAV: 599.9A
ACD-53NAV, ACDC-54NAV : 999.9A

99.99A ± (2.5% + 0.2A)

599.9A / 999.9A * ± (2.5% + 5dgt)

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