INSTRUCTION MANUAL
AC CLAMP METER
WITH DC VOLT RANGE
KEW SNAP 6
KEW SNAP 2608A
Easy to use and dependable, the instrument is especially designed to incorporate as many safety features as possible.
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TRANSFORMERJAW |
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V TERMINAL |
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BARRIER |
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JAWTRIGGER |
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COM TERMINAL |
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RANGESWITCH |
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OHM TERMINAL |
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POINTERLOCKBUTTON |
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OHM |
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ZEROADJUSTER |
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SCALEPLATE |
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ZERO ADJUSTER |
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WRISTSTRAP |
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KYORITSU
ELECTRICAL INSTRUMENTS WORKS, LTD
3. Specifications
Measuring Range and Accuracy
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Ranges |
Accuracy |
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AC current |
6/15/60/150/300A |
±3% of full scale |
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AC voltage |
150/300/600V |
±3% of full scale |
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DC voltage |
60V |
±3% of full scale |
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x1Ω 1kΩ |
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Resistance |
(25Ω mid-scale) |
±2% of scale length |
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x10Ω 10kΩ |
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(250Ω mid-scale) |
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Temperature |
-20-+150 |
±5 (0-+100 ) |
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(with optional Model |
±10 |
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7060) |
(other ranges) |
Overload Protection
Range |
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Maximum overload |
AC6/15A |
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60A AC for 10 sec |
AC60/150A |
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300A AC for 10 sec |
AC300A |
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360A AC for 10 sec |
AC150/300V |
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600V AC for 10 sec |
AC600V |
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720V AC for 10 sec |
DC60V |
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230V AC for 10 sec |
×1Ω/×10Ω |
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230V AC, protection by fuse |
Location for use |
:Indoor use, Altitude up to |
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2000m |
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Storage Temperature
and Humidity :-10-+50 ,relative humidity up to 75% without condensation
Operating |
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Temperature |
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and Humidity |
:0-+40 , relative humidity up |
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to 90% without condensation |
Conductor Size |
:Approx. 33mm diameter max. |
Safety Standard |
:IEC61010-1 CAT.III 300V |
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CAT.II 600V |
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IEC61010-2-031 |
Withstand Voltage |
IEC61010-2-032 |
:3700V AC for 1 minute |
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between electrical circuit and |
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housing cases or metal parts of |
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jaws |
Dimensions |
:193(L)×78(W)×39(D)mm |
Weight |
:Approx.275g(battery included) |
PowerSource |
:R6P(DC1.5V) battery or |
Accessories |
equivalent |
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(included) |
:Instruction manual |
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Carrying case Model 9052 |
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Test leads Model 7066 |
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R6P battery(included within |
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the instrument) |
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Two 0.5A/25600V fuses(spare |
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fuse included) |
(optional) |
:Model 8004,8008(Multi-Tran) |
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Model7060(temperature |
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probe) |
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 when using the instrument.
WARNING
Read through and understand instructions contained in this manual when 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 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.This symbol is marked where the user
must refer to the instruction manual so as not to cause personal injury or instrument damage.
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.
DANGER
Never make measurement on a circuit above 600V AC.
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.
Never try to make measurement if any abnormal conditions, such as broken Transformer jaws or case is noted.
The instrument is to be used only in its intended applications or conditions. Otherwise,safety functions, equipped with the instrument doesn t work, and instrument damage or serious personal injury may be caused.
WARNING
Never attempt to make any measurement, if the instrument has any structural abnormality such as cracked case and exposed metal part.
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.
Remove the test leads from the instrument before opening the bottom case for battery or fuse replacement.
4. Preparation for Measurement
4 1 Releasing Pointer Lock
Slide the pointer lock button to the right position to unlock the pointer.
4 2 Meter Zero Adjustment
Set the pointer at the center of the “0”mark on the scale by rotating the zero adjuster with a screw driver.
POINTER LOCK
BUTTON
POINTER |
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ZERO |
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ADJUSTER |
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4 3 Checking Battery Voltage
a.Set the range switch to the “×1Ω” position.
b.Insert the red test lead into the OHM terminal and the black test lead to the COM terminal.
c.With the test leads shorted, try to set the pointer over the “0” mark at the right end of the resistance scale, using the OHM zero adjuster.
d.When the adjustment brings the pointer over the “0” mark, proceed to measurement. If not, replace the battery. (See section 7 for battery and fuse replacement.)
NOTE
The battery is needed only in resistance measurement. AC/DC voltage and AC current measurement can be made without the battery.
If the instrument does not operate properly even after battery replacement, check the fuse and test leads.
5. Measurement
5 1 AC Current Measurement
WARNING
Do not make measurement on a circuit above 600V AC. This may cause shock hazard or damage to the instrument or equipment under test.
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.
Do not make measurement with the bottom case removed.
Do not make current measurement with the test leads connected to the instrument.
Do not measure current exceeding the limit for the overload protection feature.
Keep your fingers and hands behind the barrier during measurement.
CAUTION
When the order of the current under test is not known, make measurement first on the highest 300A range, then switch to the appropriate range.
a.Set the range switch to the “AC 300A” position.
b.Press the trigger to open the transformer jaws and clamp onto one conductor only. It is recommended that the conductor be placed at the center of the closed jaws.
CORRECT
WRONG
CAUTION
Make sure that the range switch is set to an appropriate position before making measurement.
Always make sure to insert the plug of each test lead fully into the appropriate terminal on the instrument.
When the instrument will not be in use for a long period of time, place it in storage after removing the batteries.
Do not expose the instrument to the direct sun, extreme temperatures or dew fall.
Use a damp cloth and detergent for cleaning the instrument. Do not use abrasives or solvents.
○Measurement categories(Over-voltage categories) To ensure safe operation of measuring instruments, IEC61010 establishes safety standards for various electrical environments, categorized as CAT to CAT , and called measurement categories.
Higher-numbered categories correspond to electrical environments with greater momentary energy, so a measuring instrument designed for CAT environments can endure greater momentary energy than one designed for CAT
CAT. : Secondary electrical circuits connected to an AC electrical outlet through a transformer or similar device.
CAT. : Primary electrical circuits of equipment connected to an AC electrical outlet by a power cord.
CAT. : Primary electrical circuits of the equipment connected directly to the distribution panel, and feeders from the distribution panel to outlets.
CAT. : The circuit from the service drop to the service entrance, and to the power meter and primary over-current protection device(distribution panel).
Incoming wire |
Interior wiring |
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CAT. |
CAT. |
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TransformerCAT. |
Socket |
CAT. |
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2. Features
Tear-drop-shaped jaws for ease of use in crowded cable areas and other tight places Safety design throughout. Designed to CAT.III 300V/CAT.II 600V and pollution degree 2 specified by the international safety standard IEC 61010.
DC voltage range especially useful for checking a power supply for emergency use Pointer lock feature for easy reading in dimly light or hard-to-read locations
Uses shrouded transformer jaws to further improve safety
Optional temperature probe for temperature measurement
c.Take the reading on the 300A current scale.
d.Set the range switch to the appropriate position based on the reading.
e.Take the reading on the appropriate scale.
Range |
Scale used |
Multiply reading by |
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6 |
60 |
×0.1 |
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15 |
150 |
×0.1 |
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60 |
60 |
×1 |
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150 |
150 |
×1 |
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300 |
300 |
×1 |
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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 is not a fault and does not affect the accuracy at all.
5-2 AC Voltage Measurement
WARNING
Do not make measurement on a circuit above 600V AC. This may cause shock hazard or damage to the instrument or equipment under test.
Do not make measurement with the bottom case removed.
Do not apply to the instrument voltage exceeding the limit for the overload protection feature.
Keep your fingers and hands behind the barrier during measurement.
a.Set range switch to an AC voltage position. When the order of the voltage under test is not known, set the range switch to the highest 600V range.
b.Insert the red test lead to the V terminal and the black test lead to the COM terminal.
c.Connect the tip of the test leads to the circuit under test.
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