YOKOGAWA 30031A User manual

Safety precautions
Various symbols are used on the instrument and throughout this manual to
ensure safe use of the product and to protect against possible hazards or
damage. The following safety symbols are used where appropriate. Read
the explanations carefully and familiarize yourself with the symbols before
reading the text.
WARNING
Indicates a hazard that may result in the loss of life or
serious injury of the user unless the described instruction
is abided by.
CAUTION
Indicates a hazard that may result in an injury to the
user and/or physical damage to the product or other
equipment unless the described instruction is abided
by.
The following safety symbols are used on the instrument and in this
manual:
WARNING
Danger! Handle with Care
This symbol indicates that the operator must refer to an explanation
in the instruction manual in order to avoid the risk of injury or death
of personnel or damage to the instrument.
This symbol indicates that this instrument designed to be applied
around or removed from HAZARDOUS LIVE conductors provided
if the RATED circuit-to-earth voltage dose not exceed the value
indicated in the measurement category.
Double Insulation
This symbol indicates double insulation.
Alternating Current
This symbol indicates AC voltage/current.
Direct Current
This symbol indicates DC voltage/current.
Earth TERMINAL
This symbol indicates ground.
WARNING
nStrictly observe the following cautionary notes in order to
avoid the risk of injury or death of personnel or damage to
the instrument due to hazards such as electrical shock.
• Do not use the instrument if there is any damage to the casing, bat-
tery cover, display and labels or when the casing is removed.
• Barrier is for to avoid touching the conductor.
Be careful not to across the Barrier when using the instrument.
• Disconnect the instrument from the measurable conductors under
test before opening the casing to replace the battery.
• Safety protectors such as rubber-insulated gloves should be worn to
prevent electrical shock when using the instrument.
• Avoid using the instrument if it has been exposed to rain or moisture
or if your hands are wet.
• Donotusetheinstrumentinanatmospherewhereanyammable
or explosive gas is present.
WARNING
Measurement Category of Model 30031A
Measurement
category (CAT.) Maximum Allowable Input
III
62 Arms
(The RATED circuit-to-earth voltage: 300 Vrms AC)
Do not apply input exceeding this value. Otherwise,
it will not only damage the tester, but also pose a risk
of damage to the human body. For safety standards,
refer to the specications.
CAUTION
• Do not use the instrument near noise-emitting equipment or where
there may be sudden changes in temperature. Otherwise, the instru-
ment may produce an unstable readings or errors.
• Do not wipe the instrument using an organic solvent such as benzine
or paint thinner. Otherwise, the front panel may be damaged or
discolored. When cleaning the instrument, use a dry cloth.
• Do not leave the tester exposed to direct sunlight or in a hot and
humid location such as the inside of a car, for any prolonged length
of time.
• If the instrument will not be used for long periods, remove the bat-
tery.
User’s
Manual
Models 30031A
Leakage Clamp-on Tester
IM 30031A-E
2nd Edition: Aug. 2009 (KP)
Copyright May 2008 (YMI). 2nd Edition; Aug. 2009 (KP)
CAUTION
• The jaw section is a delicate, precision sensor. Do not subject the
jaw to unreasonably strong shock, vibration, or force when using
it.
• If dust gets into the tops of the jaws, remove it immediately. Do not
close the jaws when dust is trapped in its joints as the sensor may
break.
Components
1) Jaw Section
Is a precision sensor for detecting currents.
2) Open/Close Lever
Opens and closes the jaws.
3) Display
Shows the measured value (digital reading or bar graph), unit, function
and low-battery symbol ( ).
4) mA/A Selector Switch
Selects the unit of AC current (either “mA” or “A”) to be measured.
5) Data Hold Switch
Retains the measured data. If you press this switch, the symbol ap-
pears and the data is retained. If you press this switch once again, data
holding is canceled (the symbol disappears).
6) Power Switch
Turns on the power to the instrument.
7) Battery Housing (Battery cover)
Contains the battery.
8) Barrier
Prevents contact with the wires.
Jaw
section
Open/
close lever
Battery
housing
(cover)
mA/A
selector
switch Power
switch
Data hold
switch
Display
Hand strap
Barrier
Display (LCD)
AUTO POWER OFF Function
nWhen the AUTO POWER OFF Function is Used
• AUTO OFF appears.
• The instrument automatically turns off 10 minutes after the last switch
operation. A buzzer starts to beep 15 seconds before the automatic
power-off.
• Pressing any switch after the beep restarts the auto power-off func-
tion.
Store this manual in a safe
place for future reference.
nWhen the AUTO POWER OFF Function is not Used
(Cancellation of the AUTO POWER OFF Function)
• Turn off the power.
• With the DATA HOLD switch held down, press the POWER switch
for more than 2 sec. to turn on the power.
This causes the buzzer to sound, canceling the AUTO POWER OFF
function (the AUTO OFF display goes off).
If the instrument is used with the AUTO POWER OFF function can-
celled, take care not to let the battery run down.
nRecovering the AUTO POWER OFF Function
• Turn off the power.
• Turn on the power. This enables the AUTO POWER OFF function to
recover. (AUTO OFF appears.)
Measuring Instructions
nBefore measurementBefore measurement
a) Examine the casing, battery cover, display, and labels of the instrument
for abnormalities.
b)Makesurethatthebatterycoverisrmlyclosed.
nAC Current Measurement (unit: mA/A)
a) Press the POWER switch to turn on the power.
b) Squeeze the open/close lever to open the jaws. Insert a wire from the
measurable conductors under test through the jaws, making sure the tops
of the jaws are tightly shut.
c)Whenthereadingstabilizes,readthevalue.Ifyouhavedifcultiesin
reading the value, use the DATA HOLD function.
d) When measuring Load Current, press the mA/A switch to change to A
range.
e)Whenyouhavenishedmeasurement,pressthePOWERswitchtoturn
off the tester.
CAUTION
• Thecorrectmeasuredvaluesarenotdisplayedifthejawsdonott
precisely. Make sure that they are shut tightly.
nUsing the DATA HOLD switch
Pressing the DATA HOLD switch retains the measured data and displays
. The mA/A selector switch cannot be used in this situation. The only
switches that can be used are the DATA HOLD switch (to cancel data hold-
ing) and the POWER switch.
Range Selection
nRange Selection
Switching between the 3 mA and 30 mA ranges and between the 30 A and
60 A ranges is performed by auto-ranging (automatic). For switching be-
tween the 3/30 mA and 30/60 A ranges, the range must be switched using
the mA/A selector switch.
nMeasurement Ranges
3 mA range
30 mA range
30 A range
60 A range
0.000mA
0.010mA<I
I≤2.88mA
I≥3.270mA
I≥32.70mA
Zero correction
Overrange
OL
I≤28.8A
I≥32.70A
I≥60.6A
62.0A MAX
Range down Overrange Range up
Range down Range up
OL
0.05A<I
Zero correction
0.00A
Battery Replacement
nBattery �oltageBattery �oltage
If the battery runs down and its voltage falls below the operating voltage
(effective range), the symbol appears in the LCD display; promptly
replace the battery with a new one.
(Battery: CR2032, 1 pc.)
CAUTION
• Thespeciedaccuracyisassuredwhenthebatteryvoltageisinthe
effective range.
If the symbol is displayed, promptly replace the battery.
• If the power does not come on even after pressing the POWER
switch, the battery voltage may have fallen too low. Replace the
battery with a new one.
IM 30031A-E <1>
IM3E-2009.2
Yokogawa Meters & Instruments Corporation
International Sales Dept.
Tachihi Bld. No.2, 6-1-3, Sakaecho, Tachikawa-shi,Tokyo 190-8586 Japan
Phone: [phone], Facsimile: 81-42-534-1426
YOKOGAWA CORPORATION OF AMERICA (U.S.A.)
Phone: [phone] Facsimile: 1-770-254-0928
YOKOGAWA EUROPE B. V. (THE NETHERLANDS)
Euroweg 2, 3825 HD, Amersfoort, THE NETHERLANDS
Phone: [phone] Facsimile: 31-88-4641111
YOKOGAWA AMERICA DO SUL LTDA. (BRAZIL)
Phone: [phone] Facsimile: 55-11-5681-4434
YOKOGAWA ENGINEERING ASIA PTE. LTD. (SINGAPORE)
Phone: [phone] Facsimile: 65-6241-2606
YOKOGAWA MEASURING INSTRUMENTS KOREA CORPORATION (KOREA)
Phone: [phone] to -0664 Facsimile: 82-2-551-0665
YOKOGAWA AUSTRALIA PTY. LTD. (AUSTRALIA)
Phone: [phone] Facsimile: 61-2-8870-1111
YOKOGAWA INDIA LTD. (INDIA)
Phone: [phone] Facsimile: 91-80-2852-1441
YOKOGAWA SHANGHAI TRADING CO., LTD. (CHINA)
Phone: [phone] Facsimile: 86-21-6880-4987
YOKOGAWA MIDDLE EAST B. S. C (C) (BAHRAIN)
Phone: [phone] Facsimile: 973-17-336100
YOKOGAWA ELECTRIC CIS LTD. (RUSSIAN FEDERATION)
Phone: [phone] Facsimile: 7-495-737-7869

nReplacing the BatteryReplacing the Battery
CAUTION
• Before replacing the battery, always disconnect the tester from the
measurable conductor under test because there is a risk of electri-
cal shock. After replacement, close the battery cover securely and
conduct measurements.
 
To replace the battery:
a) Press the POWER switch to turn off the power.
b) Turn the battery cover on the backside of the instrument in the direction
of the arrow using a coin, etc.
c) Remove the cover and the battery.
d) Insert a new battery, making sure that the polarities are correct.
e) Close the cover back in place by turning it in the reverse direction of the
arrow.
Inserting a Battery Closing the Battery Cover
Battery cover
Close the battery cover, aligning
the arrow's tail with the dot and
then turn clockwise.
Insert the battery being careful
that the polarities are correct.
Examples of Measurement
nExamples of Leakage Current Measurement
Load
Load
Single-phase
Two-wire Circuit
Load
Grounding Wire
(1) (3)
(2)
Single-phase Three-
wire or Three-phase
Three-wire Circuit
nExample of Load Current Measurement
Load
Insert only one of the wires through the jaws.
Specications (30031A)
n Specications
Condition: temperature and humidity
  
                
Battery voltage: Within the effective range
AC current measurement
 
Range Resolution Accuracy Maximum
Allowable Current
3 mA 0.001 mA 0.010 < I ≤ 32.70 mA:
1.0%+5
3.270 mA
30 mA 0.01 mA 32.70 mA
30 A 0.01 A 0.05 < I ≤ 50.0 A: 1.0% +5 32.70 A
60 A 0.1 A 50.0 < I ≤ 60.6 A: 5.0% +5 60.6 A
Zero correction
3 mA range: Displays 0.000 mA (zero) when 0.010 mA < I
30 A range: Displays 0.00 A (zero) when 0.05 A < I
n General Specications
• Method: Mean-value detection and rms-value calibration
• Display (LCD): Digital reading ........ 3200 counts
Bar graph ................ 32 segments
“OL” over-range indication
low-battery symbol
data hold symbol
“AUTO OFF” auto power off indication
• Sampling: Digital reading ........ 2 times/sec
Bar graph ................ 12 times/sec
• Range: 3 mA, 30 mA, 30 A, 60 A
• Range selection: Automatic (between 3 mA and 30 mA ranges and be-
tween 30 A and 60 A ranges)
Manual (between 3 mA and 30 mA ranges and between
30 A and 60 A ranges)
• Additional functions:
Data hold and Auto power-off
• Operating temperature and humidity range:
  
(no condensation)
• Storage temperature and humidity range:
  
condensation)

The following values must be added in the temperature
range of either 0 to 18°C or 28 to 50°C.
             
             

      
current in adjacent wires)
• Diameter of measurable conductors: Ø 40 mm (Maximum)
• The RATED circuit-to-earth voltage: 300 Vrms or less
• Withstanding voltage: 3.7 kV AC for one minute (Tested between the
cores of the jaw section and the case)
• Power consumption: 6mW maximum
• Automatic power-off: Automatically turns of the power approx. 10 minutes
after the last switch operation. (The alarm buzzer begins
beeping 15 seconds before power-off.)
• Power supply: CR2032 lithium battery ..................... 1
• Battery life: Approx. 90 hours (of continuous operation)
• Dimensions: Approx. 70 (W) x 178 (H) x 25 (D) (mm),
excluding protrusions
• Weight: Approx. 200 g (including the battery)
• Accessories: Battery (housed in the instrument)..... 1
RB057 soft carrying case................... 1
User’s manual
• Safety standards: Complaint with EN 61010-1, EN 61010-2-032
Measurement category III
(The RATED circuit-to-earth voltage: 300 Vrms AC)
Pollution degree2
Environmental conditions:
Operating altitude: 2000 m max. above sea level;
indoor use
• EMC standards: EN 55011 Class B Group 1
EN 61326-1 Class B
EN 61326-2-2
WARNING
Measurement Category (CAT.)
Measurement
category Description Remarks
ICAT.IFor measurements performed on circuits
not directly connected to MAINS.
II CAT.II
For measurements performed on circuits
directly connected to the low-voltage
installation.
Appliances,portable
equipments,etc.
III CAT.III For measurements performed in the
building installation.
Distribution board,
circuit breaker,etc.
IV CAT.IV For measurements performed at the
source of the low-voltage installation.
Overhead wire,
cable systems,etc.
Internal Wiring
Outlet
Entrance
Cable T
Fixed Equipment,
etc.
Distribution
Board CAT.
II
Equipment
CAT. I
CAT. IV
CAT. III
Disposing the Product
Waste Electrical and Electronic Equipment (WEEE)
Directive 2002/96/EC
This Product complies with the WEEE Directive (2002/96/EC) marking re-

discard this electrical/electronic product in domestic household waste.
Product Category
With reference to the equipment types in the WEEE directive Annex 1,
    
product.
To return unwanted products within the EU area, contact your local

Do not dispose in domestic household waste.
“Measures for Administration of the Pollution Control of
Elecronic Information Products” of the People’s Republic of
China
The following are the provisions of “Measures for Administration of the
Pollution Control of Electronic Information Products” of the People’s
Republic of China.
They are applicable only in the People’s Republic of China.
产品中有毒有害物质或元素的名称及含量
部件名称
有毒有害物质
铅
（Pb） 汞 （Hg） 镉 （Cd） 六价铬 （Cr (VI)） 多溴联苯 （PBB） 多溴二苯醚 （PBDE）
电流探头
( 夹子 ) × × × × ○ ○
○：
表示该部件的所有均质材料中的有毒有害物质的含量均在 SJ/T11363-2006 标准中所规定的
限量以下。
×： 表示该部件中至少有一种均质材料中的有毒有害物质或元素的含量超过 SJ/T11363-2006 标准
所规定的限量要求
。
环保使用期限 :
该标识适用于 2006 年 2 月 28 日颁布的《电子信息产品污染控制管理办法》以及
SJ /T11364 – 2006《电子信息产品污染控制标识要求》中所述，在中华人民共和国销
售的电子信息产品的环保使用期限。
只要您遵守该产品相关的安全及使用注意事项，在自制造日起算的年限内，则不会因
产品中有害物质泄漏或突发变异，而造成对环境的污染或对人体及财产产生恶劣影响。
注） 该年数为“环保使用期限＂
，并非产品的质量保证期。零件更换的推荐周期，请参
照使用说明书。
IM 30031A-E <2>