KYORITSU 2007A - Manual

KYORITSU ELECTRICAL INSTRUMENTS
WORKS,LTD.
KEW SNAP 2007A
KEW SNAP
SERIES
DIGITAL AC CLAMP METER
INSTRUCTION MANUAL １． Safety Warnings
○ This instrument has been designed and tested according to IEC Publication
61010: Safety Requirements for Electronic Measuring Apparatus. This instruction
manual contains warnings and safety rules which must be observed by the user to
ensure safe operation of the instrument and retain it in safe condition. Therefore,
read through these operating instructions before using the instrument.
WARNING
●Read through and understand instructions contained in this manual before
starting using the instrument.
●Save and keep the manual handy to enable quick reference whenever
necessary.
●Be sure to use the instrument only in its intended applications and to follow
measurement procedures described in the manual.
●Be sure to understand and follow all safety instructions contained in the
manual. Failure to follow the above instructions may cause injury, instrument
damage and/or damage to equipment under test.
○The symbol indicated on the instrument means that the user must refer to
related parts in the manual for safe operation of the instrument. Be sure to
carefully read the instructions following each
symbol in this manual.
DANGER is reserved for conditions and actions that are likely to cause
serious or fatal injury.
WARNING is reserved for conditions and actions that can cause serious or
fatal Injury.
CAUTION is reserved for conditions and actions that can cause minor injury
or instrument damage.
○ Following symbols are used on the instrument and in the instruction manual.
Attention should be paid to each symbol to ensure your safety.
Refer to the instructions in the manual.
Indicates an instrument with double or reinforced insulation.
Indicates that this instrument can clamp on bare conductors when
measuring a voltage corresponding to the applicable Measurement
category, which is marked next to this symbol.
Indicates AC (Alternating Current).
Indicates DC (Direct Current).
Indicates AC and DC.
Indicates Earth.
DANGER
●Never make measurement on a circuit with a voltage higher than 750VAC.
●Do not attempt to make measurement in the presence of flammable gasses,
fumes, vapor or dust. Otherwise, the use of the instrument may cause
sparking, which can lead to an explosion.
●Transformer jaw tips are designed not to short the circuit under test.
If equipment under test has exposed conductive parts, however, extra
precaution should be taken to minimize the possibility of shorting.
● Never attempt to use the instrument if its surface or your hand is wet.
● Do not exceed the maximum allowable input of any measurement range.
● Never open the battery compartment cover when making measurement.
WARNING
●Never attempt to make any measurement if any abnormal conditions are
noted, such as broken case, cracked test leads and exposed metal part.
●Do not turn the function selector switch with plugged in test leads connected
to the circuit under test.
●Do not install substitute parts or make any modification to the instrument.
Return the instrument to Kyoritsu or your distributor for repair or re-
calibration.
● Do not try to replace the batteries if the surface of the instrument is wet.
●Always switch off the instrument before opening the battery compartment
cover for battery replacement.
CAUTION
●Make sure that the function selector switch is set to the appropriate position
before making measurement.
●Always make sure to insert each plug of the test leads fully into the
appropriate terminal on the instrument.
●Make sure to remove the test leads from the instrument before making
current measurement.
●Do not expose the instrument to the direct sun, extreme temperatures or
dew fall.
●Be sure to set the function selector switch to the "OFF" position after use.
When the instrument will not be in use for a long period of time, place it in
storage after removing the battery.
●Use a damp cloth and detergent for cleaning the instrument. Do not use
abrasives or solvents.
Incoming wire
CAT.IV
Interior wiring
Transformer
CAT.I
CAT.II
CAT.III
Socket
○ Measurement categories (Over-voltage categories)
To ensure safe operation of measuring instruments, IEC61010 establishes
safety standards for various electrical environments, categorized as CAT I to
CAT IV, and called measurement categories. Higher-numbered categories
correspond to electrical environments with greater momentary energy, so a
measuring instrument designed for CAT III environments can endure greater
momentary energy than one designed for CAT II.
CAT Ⅰ: Secondary electrical circuits connected to an AC electrical outlet
through a transformer or similar device.
CAT Ⅱ: Primary electrical circuits of equipment connected to an AC electrical
outlet by a power cord.
CAT Ⅲ: Primary electrical circuits of the equipment connected directly to the
distribution panel, and feeders from the distribution panel to outlets.
CAT Ⅳ: The circuit from the service drop to the service entrance, and to the
power meter and primary over-current protection device (distribution
panel).
３．Specifications
● Measuring Ranges and Accuracy
AC Current ( A)
AC Voltage ( V) (Input impedance: approx. 2M Ω)
Resistance (Ω/ )(Auto-ranging)
● Operating System : Dual Integration
● Display : Liquid crystal display (maximum count: 3999)
● Low Battery Warning :"BATT" is shown on the display
● Overrange Indication :"OL" is shown on the display
● Response Time :Approx. 2 seconds
● Sample Rate :About 2.5 times per second
● Location for use : Indoor use, Altitude up to 2000m
● Temperature and Humidity
for Guranteed Accuracy :23 ± 5 ℃, relative humidity up to 85% without condensation
● Operating Temperature
and Humidity :0-40 ℃, relative humidity up to 85% without condensation
● Storage Temperature
and Humidity :-20-60 ℃, relative humidity up to 85% without condensation
● Power Source :Two R03 or equivalent (DC1.5V) batteries
● Current Consumption :Approx. 2.5mA.
● Sleep function :Automatically powered down in about 10 minutes after the
last switch operation (power consumption in the sleep mode is
about 35μ A.)
● Standards :IEC61010-1 CAT Ⅲ 300V, pollution degree 2
CAT Ⅱ 600V, pollution degree 2
CAT Ⅰ 1000V, pollution degree 2
IEC61010-031
IEC61010-2-032
IEC61326(EMC)
● Overload Protection :AC current ranges: 720A AC for 10sec
AC voltage ranges: 900V AC for 10sec
Resistance ranges: 600V AC for 10sec
● Withstand Voltage :3700VAC(RMS,50/60Hz) for 1 minute between electrical circuit
and housing case
● Insulation Resistance :10M Ω or greater at 1000V between electrical circuit and
housing case
● Conductor Size :Approx. 33mm diameter max.
● Dimensions :195(L)x78(W)x36(D)mm
Range
400A
600A
Measuring Range
0 ∼ 399.9A
0 ∼ 599A
Accuracy
± 1.5%rdg ± 4dgt（50/60Hz）
± 2.0%rdg ± 5dgt（40 ∼ 400Hz）
Range
400V
750V
Measuring Range
0 ∼ 399.9V
0 ∼ 749V
Accuracy
± 1.2%rdg ± 3dgt（50/60Hz）
± 1.5%rdg ± 4dgt（40 ∼ 400Hz）
Range
400 Ω/
4k Ω
Measuring Range
0 ∼ 399.9 Ω
0.150 ∼ 3.999k Ω
Accuracy
± 1.5%rdg ± 2dgt
（Buzzer beeps below 50 ± 35 Ω）
２．Features
●Tear-drop-shaped jaws for ease of use in crowded cable areas and other tight places
● Safety design conforming to the following provisions of IEC61010
Measurement category III 300V, pollution degree 2,
Measurement category II 600V, pollution degree 2,
Measurement category I 1000V, pollution degree 2,
● Data Hold function for easy reading in dimly light or hard-to-read locations
●"Sleep" feature to extend battery life
● Beeper permits easy continuity check
● Provides a dynamic range of 4,000 counts full scale
● Uses shrouded transformer jaws to further improve safety
（ ）
Transformer Jaw
Jaw Trigger
Function Selector Switch
V Terminal
COM Terminal Drop Prevension Strap
Ω Terminal
Display
Data Hold Switch
Barrier
Voltage
Resistance
Current
Battery Voltage Alert
Data Hold Mode
５．Preparation for Measurement
５− 1 Checking Battery Voltage
Set the function selector switch to any position other than "OFF". When the
display is clear without " BATT " showing, proceed to measurement. When the
display blanks or " BATT " is indicated, replace the batteries according to the
instructions described in section 8. Battery Replacement.
NOTE
The sleep feature automatically turns the instrument off in a certain
period of time after the last switch operation. Therefore, the display
may be blank with the function selector switch set to a position other
than "OFF". To operate the instrument in this case, set the switch
back to the "OFF" position, then to the desired position, or press any
button. If the display still blanks, the batteries are exhausted. Replace
the batteries.
５−２ Checking Switch Setting and Operation
Make sure that the function selector switch is set to the correct position and
the data hold function is deactivated. Otherwise, desired measurement cannot
be made.
● LCD INDICATOR
● Weight :Approx. 260g (including batteries)
● Accessories :Test leads M-7066
Two R03 batteries
Carrying case M-9097
Instruction manual
● Optional Accessories :Multi-Tran M-8008
４．Instrument Layout
６．Measurement
６−１ AC Current Measurement
WARNING
●Do not make measurement on a circuit with a voltage higher than 750V AC.
Otherwise, shock hazard or damage to the instrument or equipment under
test may result.
●Transformer jaw tips are designed to minimize the possibility of shorting
conductors in the circuit under test. If equipment under test has exposed
conductive parts, however, extra precaution should be taken to avoid
possible shorting.
● Do not make measurement with the battery compartment cover removed.
●Do not make current measurement with the test leads connected to the
instrument.
● Keep your fingers and hands behind the barrier during measurement.
(1) Set the function selector switch to the "400A" or "600A" position.
(2) Press the trigger to open the transformer jaws and clamp onto one
conductor only.
(3) Take the reading on the display.
Note :
◇During current measurement, keep the transformer jaws fully closed.
Otherwise, accurate measurement cannot be made. The maximum
conductor size is 33mm in diameter.
◇When measuring a larger current, the transformer jaws may buzz. This
does not affect the instrument's accuracy.
Correct Wrong
Black lead Red lead
６−２ AC Voltage Measurements
DANGER
●Never use the instrument on a circuit with a voltage higher than 750VAC.
Otherwise, electric shock hazard or damage to the instrument or the circuit
under test may result.
● Do not make measurement with the battery compartment cover removed.
(1) Set the function selector switch to the "400V" or "750V" position. "
(2) Plug the red test lead into the V terminal and the black test lead into the
COM terminal.
(3) Connect the test lead prods to the circuit under test and take the reading
on the display.
６−３ Resistance Measurement
DANGER
● Always make sure that the circuit under test is powered off.
● Do not make measurement with the battery compartment cover removed.
(1) Set the function selector switch to the "Ω/ " position.
(2) Plug the red test lead into the Ω terminal and the black test lead into the
COM terminal.
(3) Check that the display reads "OL". With the test lead prods shorted
together, also check that the buzzer beeps and the display reads "0" .
(4) Connect the test lead prods to the circuit under test and take the reading
on the display. The buzzer beeps the reading is below about 50 Ω.
NOTE
◇When shorting the test lead prods together, the display may show a very
small resistance instead of "0". This is the resistance of the test leads.
◇ If one of the test leads has an open, the display reads "OL".
７. Other Functions
７−１ Sleep Function
NOTE
The instrument still consumes small amount of battery power in the sleep
mode. Make sure to set the function selector switch to the OFF position after
use.
This is a function to prevent the instrument from being left powered on in order to
conserve battery life. This function causes the instrument to automatically enter
the sleep (powered-down) mode about 10 minutes after the last switch or button
operation.
To exit the sleep mode, turn the function selector switch back to "OFF", then to any
other position, or press any button.
How to disable the sleep function:
To disable the sleep function, power on the instrument with the Data Hold
button pressed. "P.OFF" is shown on the display for about 3 seconds after the
instrument is powered on.
To enable the sleep function, power the instrument off, then power it on
without pressing the Data Hold button.
７−２ Data Hold Function
This is a function used to freeze the measured value on the display. Press the
Data Hold button to freeze the reading. The reading will be held regardless of
subsequent changes in input. "
H " is shown on the upper left corner of the
display while the instrument is in the Data Hold mode.
To exit the Data Hold mode, press the Data Hold button again.
NOTE :
◇If the instrument in the Data Hold mode enters the sleep mode, the Data
Hold mode will be cancelled.
Red lead Black lead
８．Battery Replacement
WARNING
To avoid electric shock hazard, make sure to set the function selector switch to
"OFF" and remove the test leads from the instrument before trying to replace
the batteries.
CAUTION
● Do not mix new and old batteries.
●Make sure to install battery in correct polatiry as indicated inside the battery
compartment.
When " BATT " is shown on the display, replace the batteries. Note that
when the battery is completely exhausted, the display blanks without " BATT "
shown.
(1) Set the function selector swith to the "OFF" position.
(2) Unscrew and remove the battery compartment on the bottom of the
instrument.
(3) Replace the batteries observing correct polarity. Use two new R03 or
equivalent batteries.
(4) Mount and screw the battery compartment cover.
Battery
Battery Compartment Cover
Screw
＋ ＋ ＋ −
＋ ＋ ＋ −
９．Optional Accessories
● Model 8008 Multi-Tran
Multi-Tran Model 8008 is designed to increase the measuring capability of a
clamp meter. With the use of the Multi-tran, you can measure AC current up to
3000A and a large bus-bar or conductor.
(1) Set the function selector switch to the "400A" position.
(2) As shown in the figure, clamp KEW SNAP 2007A onto the pickup coil of
Model 8008.
(3) Clamp Model 8008 onto the bus-bar or conductor under test.
(4) Take the reading on KEW SNAP 2007A and multiply it by 10.
● Model 8021 Energizer
Model 8021 Energizer permits current measurement with a clamp meter on a
two-conductor line cord. It also provides terminals for voltage measurement.
― Current Measurement ―
(1) Set the function selector switch of KEW SNAP 2007A to the "400A"
position.
(2) As shown in the figure on the left, clamp KEW SNAP 2007A onto the "1x"
position of the Energizer.
(3) Take the reading on the display. (Maximum measuring current: 10A)
(4) To measure a low current more accurately, clamp onto the "5x" or "10x"
position of the Energizer. Take the reading on the display and divide it by
5 or 10.
― Voltage Measurement ―
(1) Set the function selector switch of KEW SNAP 2007A to the "400V"
position.
(2) As shown in the figure on the right, With the test lead plugged into the "V"
and "COM" terminals, connect one test lead prod to the "VOLTLEAD"
terminal on one side of the Energizer and the other test lead prod to the
"VOLTLEAD" terminal on the other side.
(3) Take the reading on the display. (Maximum measuring voltage: 300V)
MAX 100㎜
MAX 150㎜
DISTRIBUTOR
KYORITSU ELECTRICAL
INSTRUMENTS
WORKS, LTD．
No.5-20, Nakane 2 ― chome, Meguro-ku,
Tokyo, 152 ―0031 Japan
Phone ： 81― 3―3723―0131
Fax ： 81― 3―3723―0152
URL ： http://www.kew-ltd.co.jp
E-mail ： info＠kew-ltd.co.jp
Factories ： Uwajima ＆ Ehime
92 ―1429B 04 ―11
Kyoritsu reserves the rights to change specifications
or designs described in this manual without notice
and without obligations.