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A3D
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Top of Low-Cost Clamp meters
Клещи электроизмерительные
Please read it carefully before use
!
!Safety Information
To ensure the safety of meter operation and maintenance,
please comply with the following description. Otherwise, it
may cause severe personal injury and even death.
- Avoid working alone so that assistance can be rendered.
- Do not use the meter when it seems as if the test leads
or the clamp have been damanged.
- Do not use the meter when the meter works abnormally
or the surface of the meter is moist.
- Please use the meter in a manner specified by the
manual, and otherwise, the protection provided by the
clamp meter may be impaired.
- If it may be in contact with charged body during
measurement, corresponding protecting measure must
be made.
- When the measured voltage exceeds alternating current
30V or direct current 60V, keep an eye on it to prevent
electric shock.
Symbols as marked on the meter and the
manual
A3D EN
!
Risk of electric shock
Refer to the manual
Double insulation
Battery
Earthing
Conforms to EU directives
Application around and removal from hazardous live
conductors is permitted
Do not discard this product or throw away
1
Auto Power Off
Resistor / /
A3D EN
2
In data holding mode, buzzer in the meter sounds in a
long time and LCD flickers in the following two
circumstances:
1. The electric meter detects signals different from display.
2. The signals detected by the electric meter are same,
but the read value of the measured signal is 50 lowest
significant bits higher than currently displayed read
value.
A3D EN
Display Hold
AC /DC
3
Caution
When test leads are connected, please connect the black
test lead first; when disconnected, please disconnect the
red test lead first.
!
A3D EN
AC /DC
Frequency (Hz)
4
A3D EN
DCA Zero
• Let clamp be away from charged body, and press
zeroing button longer than 1s to counteract influence of
residual magnetism.
• DCA Zero is effective only when the displayed current
value is smaller than 6A in the 40A range.
• Cross bar quantity on LCD screen represents intensity of
sensed electric field. If there is no indication, there may
be voltage. The meter is only used to sense alternating
current signal.
VoltsSense
5
A3D EN
Battery Replacement
Maintainance
Do not attempt to repair this Clamp Meter. It contains no
user-serviceable parts. Repair or serving should only be
performed by qualified personnel.
Cleaning
Periodically wipe the case with a dry cloth and detergent
do not use abrasives or solvents.
6
A3D EN
Specifications
1-1 General specifications
LCD display: 4000-Digital large scale LCD screen
Measuring rate: 3 times / second
Overrange display: “OL” or “-OL”.
Auto power off time: About 20 minutes after power on
Battery undervoltage indication: Display “ ”
Power requirement: AAA size Size Battery*2
Battery life: ALKALINE 150 hours.
1-2 Environmental Conditions
Indoor use
Correction: correct once a year
Operating temperature: 0-30 °C (≦80% RH)
30-40°C (≦75% RH)
40-50°C (≦45%RH)
Storage temperature:
-20 to +60°C, 0 to 80% RH (without battery)
Safety grade: IEC 61010-1 600V CAT.Ⅲ.
Maximum operating altitude: 2000 m
Maximum conductor size: 27 mm
Pollution degree: 2
Electromagnetic compatibility (EMC): EN 61326-1
Shock vibration: meet vibration requirement of sinusoid
in MIL-T-28800E (5-55Hz, maximum acceleration 3G)
Drop Protection: use of the product is not affected if it
falls to hard wood board on the ground from position 4 feet
high.
Dimension (W x H x D): 56mm x 188mm x 28mm
Weight: 225g including battery
Accessaries: Battery, test rod and manual
ⅠNo circuit connected with main trunk line.
Directly connect to circuit of low voltage
device.
ⅢBuidling power supply device, for example,
distribution cabinet.
ⅣLow voltage device power supply.
Ⅱ
CAT Application field
7
A3D EN
1-3 Electric Specifications
Accuracy is defined as ± (% reading+number of the lowest
significant site).
Environmental condition: 23°C ± 5°C < 80%RH.
Environmental coefficient: When the environmental
temperature is lower than 18°C and is higher than 28°C,
the precision is increased to 0.2*(appinted precision)/°C.
ACV
Frequency Response: 50 ~ 500Hz
Alternating conversion mode:
A3D: Display mean effective value.
Maximum peak value factor of 400.0 V range: 2.5
Maximum peak value factor of 600.0 V range: 1.7
Input impedance: 10MΩ, <100pF.
Overload protection: 600V rms.
DCV
Input impedance: About 10 MΩ, <100pF.
Overload protection: 600V rms.
Range Resolution Accuracy
400.0V 0.1V
±(0.9%+5D)
600V 1V
Range Resolution Accuracy
400.0V 0.1V ±(0.6%+2D)
±(0.7%+5D)600V 1V
8
Resistance/Continuity
* read value may have small rolling of ±2%.
Open Circuit: About 0.4V
Overload protection: 600V rms.
Continuity: Built-in buzzer sounds when measured
resistance is less than 30Ω and sounds off when
measured resistance is more than 150Ω, between 30Ω to
150Ω the buzzer maybe sound or off either.
Continuity Indicator: 2.7 Khz Tone Buzzer
Diode
Test current: 350 μA (typical)
Open Circuit: Approx. 1.8V
Input protection: 600V rms
Hz
Measured signal must contain sensitivities of alternating
current voltages of positive and negative signals at the
same time within one period:
> 10Vp-p (for 40KHz range)
> 1.5Vp-p (other ranges)
Sensitivies of alternating currents:
> 15Ap-p (for 400.0 Hz, 4Khz range)
The minimum sensitivity does not define signal with
frequency in 40 KHz range.
Range Resolution Accuracy
400.0Ω 0.1Ω ±(0.9%+5D)
±(0.9%+2D)
±(1.5%+5D)
4.000kΩ
40.00kΩ
400.0kΩ
4.000MΩ
40.00MΩ *
0.001kΩ
0.01kΩ
0.1kΩ
0.001MΩ
0.01MΩ
Range Resolution Accuracy
400.0Hz 0.1Hz
±(0.3%+5D)
4.000KHz 0.001KHz
40.00KHz 0.01KH
A3D EN
9
Indice
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