INSTRUCTION MANUAL
KEW SNAP 2434
KEW SNAP
Series
LEAKAGE CURRENT TESTER
KYORITSU ELECTRICAL INSTRUMENTS WORKS, LTD.,
TOKYO, JAPAN
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 to retain it in safe condition. Therefore, read
through these operating instructions before starting using the
instrument.
WARNING
●Read through and understand instructions contained in this
manual before starting using the instrument.
●Save and keep the manual at hand 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.
Not following 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 of 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.
DANGER
●Never make measurement on a circuit having potential of
300VAC or greater.
●Do not attempt to make measurement in the presence of
flammable gasses. Otherwise, the use of the instrument may
cause sparking, which leads to an explosion.
●The transformer jaws are made of metal and their tips are not
completely insulated. Be especially careful about the possible
shorting where the equipment under test has exposed metal parts.
●Never attempt to use the instrument if its surface or your hand is wet.
●D o n o t e x c e e d t h e m a x i m u m a l l o w a b l e i n p u t o f a n y
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.
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 Earth.
WARNING
●Never attempt to make any measurement, if any abnormal
conditions are noted, such as broken case, cracked test leads
and exposed metal parts.
●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.
CAUTION
●Make sure that the range selector switch is set to an appropriate
position before making measurement.
●Do not expose the instrument to the direct sun, extreme
temperatures or dew fall.
●Be sure to set the range 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 batteries.
●Use a damp cloth and detergent for cleaning the instrument. Do
not use abrasives or solvents.
●Always switch off the instrument before opening the battery
compartment cover for battery replacement.
2. FEATURES
●Digital clamp tester for AC leakage current measurement.
●Least affected by external magnetic field, providing wide
measuring range from very small to large currents.
●Designed to safety standard IEC 61010-2-032: measurement CAT.
Ⅲ
, 300V and pollution degree 2.
●Data hold function to allow for easy readings in dimly lit or hard-to-
reach locations.
●Provides filtering function to remove high frequency generated by
such equipment as inverters.
●Sleep function prevents unnecessary power consumption.
●Dynamic range of 4000 counts full scale.
●Large easy-to-read LCD display with letter height of 13mm.
●Transformer jaws fitted with guard to further improve safety.
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).
Incoming wire
CAT.IV
Interior wiring
Transformer
CAT.I
CAT.II
CAT.III
Socket
3. SPECIFICATIONS
Measuring ranges and accuracy
Measuring method:
Dual Integration
Display:
Liquid crystal display with maximum reading
of 3999
Low battery warning:
"BATT" mark appears on the display
Overrange Indication:
"OL" appears on the display when upper limit
of measuring range is exceeded
Response Time:
Approx. 2 seconds
Sample Rate:
Approx. 2.5 times per second
Location for use
Indoor use, Altitude up to 2000m
Accuracy-insured
23℃±5℃, relative humidity 85% or less
Temperature and
(without condensation)
Humidity Ranges:
Operating Temperature
0-40℃, relative humidity 85% or less
and Humidity Ranges:
(without condensation)
Storage Temperature
-20-60℃, relative humidity 85% or less
and Humidity Ranges:
(without condensation)
Power Source:
Two 1.5V R03 (UM-4) batteries
Current Consumption:
Approx. 4mA
Measurement Time:
Approx. 150 hours
Sleep Function:
Automatically powered down in about 10
minutes after the last switch operation
Safety Standard:
IEC 61010-1, IEC 61010-2-032
measurement CAT.
Ⅲ
300V, pollution degree
2 IEC 61326 (EMC)
Overload Protection:
120Arms max. for 10 seconds
Withstand Voltage:
3700Vrms (50/60Hz) for 1 minute between
metal part of transformer jaws and housing
case (except transformer jaw case)
Insulation Resistance:
10MΩ or greater at 1000V between metal
part of transformer jaws and housing case
(except transformer jaw case)
Conductor Size:
Approx. 28mm in diameter max.
Dimensions:
169(L)×75(W)×40(D)mm
Weight:
Approx. 220g including batteries
Accessories:
Two R03 (UM-4) batteries
Carrying case Model 9052
Instruction manual
Optional Accessories:
Multi-Tran Model 8004 and 8008
When measuring current which pulse element is superposed, differences of
the indicated value may be caused between ranges, if the peak value
exceeds the measurement range to a large extent. In this case, the reading
at the bigger range should be taken as a right value.
Sensitive transformer jaws are used for Leakage clamp meter. Because of
the characteristics of transformer jaws, which can be opened and closed, it
is impossible to eliminate the interference of external magnetic field
completely. If there are something, which generating large magnetic field, at
a nearby site, current value can be displayed (
0
cannot be displayed.)
before clamping on the conductor. For such a case, please use the
instrument at a location far from the thing, which generating magnetic field.
Following are the typical things generating magnetic field.
Conductor fed large current, Motor, Equipment which has magnet,
Integrating wattmeter
Range
400mA
4A
100A
Measuring Range
0〜399.9mA
0〜3.999A
0〜100.0A
Accuracy (Frequency range)
±2.0%rdg±4dgt（50/60Hz）
±3.0%rdg±5dgt（40〜400Hz）
4. INSTRUMENT LAYOUT
5. PREPARATIONS FOR MEASUREMENT
5-1 Checking Battery Voltage
Set the Range Selector Switch to any position other than the OFF
position. If the marks on the display is clearly visible without "BATT"
mark showing, battery voltage is OK. If the display blanks or "BATT"
is indicated, replace the batteries according to section 8: Battery
Replacement.
NOTE
When the instrument is left powered on, the Sleep function
automatically shut the power off; The display blanks even if the
Range Selector Switch is set to a position other than the OFF
position in this state. To power on the instrument, turn the Range
Selector Switch or press any button. If the display still blanks, the
batteries are completely exhausted. Replace the batteries.
5-2 Checking Switch Setting
Make sure that the Range Selector Switch is set to the appropriate
range.
A l s o m a k e s u r e t h a t d a t a h o l d f u n c t i o n i s n o t e n a b l e d . I f
inappropriate range is selected, desired measurement cannot be
made.
Transform Jaws
Trigger
Range Selector Switch
Hand Strap
Display
Frequency Selector Button
Data Hold Button
●ＬＣＤ
Low Battery Warning
Frequency Response :
Wide
Frequency Response :
50/60Hz
Data Hold Indication
Unit
Barrier
