KYORITSU KEW6024PV User manual

Instruction manual
PV insulation earth tester
KEW6024PV
06-16 92-2290
DISTRIBUTOR
Kyoritsu reserves the rights to change specifications or designs described in this
manual without notice and without obligations.
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Memo
Contents
1. Safety warnings ................................................................................... 1
2. Features............................................................................................... 7
3. Specifications....................................................................................... 9
4. Name of parts .................................................................................... 14
5. Accessories........................................................................................ 19
6. Preparations for measurement .......................................................... 21
6-1 Battery voltage check ................................................................... 21
6-2 Attaching metal tip/ adapter to test leads...................................... 21
7. Insulation resistance measurement on PV systems .......................... 23
7-1 Measuring method ........................................................................ 25
8. Insulation resistance measurement ................................................... 31
8-1 Measuring method ........................................................................ 32
9. Earth resistance measurement.......................................................... 36
9-1 Measurement principle ................................................................. 36
9-2 Simplified measurement ............................................................... 37
9-3 Precision measurement (with MODEL7228A test leads).............. 40
10. Voltage measurement...................................................................... 44
10-1 Measuring method ...................................................................... 44
11. Alarm function .................................................................................. 46
11-1 Alarm function ............................................................................. 46
11-2 How to set alarm ......................................................................... 46
11-3 Display example – Alarm setting ................................................. 48
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12. Memory function .............................................................................. 49
12-1 How to save ................................................................................ 50
12-2 How to recall ............................................................................... 52
12-3 How to delete.............................................................................. 53
13. System clock settings ...................................................................... 54
13-1 How to adjust .............................................................................. 54
14. Data communication function .......................................................... 56
14-1 How to transfer data...................................................................... 56
15. Battery replacement......................................................................... 57
16. Shoulder strap and soft case attachment ........................................ 58
16-1 How to attach shoulder strap ...................................................... 58
16-2 How to attach soft case............................................................... 59
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1. Safety warnings
This instrument has been designed, manufactured and tested according to
IEC 61010: Safety requirements for Electronic measuring apparatus, and
delivered in the best condition after passing quality control tests.
This instruction manual contains warnings and safety rules which have to be
observed by the user to ensure safe operation of the instrument and to
maintain it in safe condition. Therefore, read through these operating
instructions before using the instrument.
WARNING
●Read through and understand the instructions contained in this manual
before starting to use the instrument.
●Keep the manual at hand to enable quick reference whenever necessary.
●The instrument is to be used only in its intended applications.
●Understand and follow all the safety instructions contained in the manual.
It is essential that the above instructions are adhered to. Failure to follow
the above instructions may cause injury and/or damage to the instrument.
The symbol indicated on the instrument, means that the user must
refer to the related parts in the manual for safe operation of the instrument.
It is essential to read the instructions wherever the symbol appears in the
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.
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Measurement category
To ensure safe operation of measuring instruments, IEC 61010 establishes
safety standards for various electrical environments, categorized as O 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.
O (None, Other) : Circuits which are not directly connected to the mains
power supply.
CAT II : 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
overcurrent protection device (distribution panel).
DANGER
●Never make measurements on a circuit in which earth potentials of
300 V or higher (in CAT IV)/ 600 V or higher (in CAT III) exist.
●Use the metal parts for test probes appropriate for the measurement
category they are used in.
●When test probes are connected to the instrument, the lower category
either of them belongs to is applied. Confirm that they are rated for the
measurement voltage of the instrument to be used.
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DANGER
●The instrument is to be used only in its intended applications or
conditions. Otherwise, safety functions equipped with the instrument
don’t work, and instrument damage or serious personal injury may
occur.
●Verify proper operation on a known source before taking actions as a
result of the indication of the instrument.
●Do not attempt to make measurement in the presence of flammable
gasses. Otherwise, the use of the instrument may cause sparking,
which can lead to an explosion.
●Never attempt to make connections of test leads if instrument surface or
your hand is wet.
●Be careful not to short-circuit a power line with the un-insulated metal
tip of the test probes to avoid injuries.
●Do not exceed the maximum allowable input of any measuring range.
●Do not press TEST button when connecting test leads to the instrument.
●Keep the battery compartment cover screwed and closed during a
measurement.
●Do not touch the circuit under test while measuring insulation resistance
or right after measurement to avoid electrical shock.
[Voltage test leads]
●Always use the test leads supplied with this instrument.
●Connect the test leads which are required for the measurement.
●Connect the test leads to the instrument first, and then to the measure-
ment line.
●Keep your fingers behind the barrier during a measurement.
Barrier provides protection against electrical shock and ensuring the
minimum required air and creepage distances.
●Never try to disconnect the test leads from the connectors of the
instrument during a measurement - while the instrument is energized.
●Do not touch two lines under test, at the same time, with the metal tips.
●Never touch the metal tips.
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WARNING
●The instrument is to be used only in its intended applications.
Understand and follow all the safety instructions contained in the
manual. Failure to follow the instructions may cause injury, instrument
damage and/or damage to the equipment under test. Kyoritsu is by no
means liable for any damage resulting from the instrument in
contradiction to these cautionary notes.
●Never attempt to make any measurements if the test leads and/or the
instrument has any structural abnormality, such as a crack or exposed
metal parts.
●Do not install substitute parts or make any modifications to the
instrument. Return the instrument to your local KYORITSU distributor for
repair or re-calibration in case of suspected faulty operation.
●Do not try to replace batteries if the surface of the instrument is wet.
●Connect the test leads firmly to the connectors.
●When replacing batteries, power off the instrument first, and then open
the battery compartment cover.
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CAUTION
●Select an appropriate function before starting a measurement.
●Power off the instrument after use, and disconnect the test leads.
Remove batteries if the instrument is to be stored and will not be in use
for a long period.
●Do not expose the instrument to direct sunlight, high temperature,
humidity or dew.
●Use a damp cloth with neutral detergent or water for cleaning the
instrument. Do not use abrasives or solvents.
●Wipe the instrument with a soft cloth, if it is wet, and store it after it’s dry.
Carefully read and observe the precautions with a mark of DANGER,
WARNING, CAUTION and Note: described in each chapter.
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Symbols marked on the instrument
CAT III
Primary electrical circuits of the equipment connected
directly to the distribution panel, and feeders from the
distribution panel to outlets
CATIV
The circuit from the service drop to the service
entrance, and to the power meter and primary
over-current protection device (distribution panel)
Instrument with double or reinforced insulation
User must refer to the explanations in the instruction
manual.
Earth
Never use on a circuit with voltages higher than
600V.
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2. Features
KEW6024PV can measure insulation resistances of PV systems with open
voltages of 1000 V or less and of low-voltage installations with voltages of
600 V or less; moreover, earth resistance and AC/ DC voltage of distribution
lines and electrical appliances.
●Designed to meet the following safety standards.
IEC 61010-1,-2-030 CAT III 600V/ CAT IV 300V Pollution degree 2
IEC 61010-031
IEC 61557-1, -2, -5, -10
●Designed, produced and tested according to IEC60529 (IP54)
●Compact and light weight
●Backlight facilitating working in dimly lit areas
* The light automatically turns off if any button isn’t pressed for two minutes.
●The instrument automatically turns off if any button isn’t pressed for 10
minutes. This feature is disabled during a continuous measurement.
●Test probe with a remote control switch is supplied as standard accessory.
●Soft case – instrument is accessible while in use
●Strap belt allowing both hands free
●Replaceable metal tips are supplied as standard accessories
●Audible and visible live circuit warning
●Internal memory can store up to 1000 results. Data transfer and analysis to/
on a PC is possible by using the special software.
●Automatic AC/ DC detection at voltage measurement
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