Yokogawa Yokogawa MY40-01 Manual

User’s
OPEN
Clr
Enter
Select
250V
1000V
500V
2000M
200M
OFF
600V MAX
V
125V
MEM
LIGHT
COMP
ALARM
INSULATION
TESTER
1000V RELEASE
MEAS
PULL
LOCK
6. ALARM LED
7. Function selector switch
3. LIGHT key
2. MEAS key
5. COMPARATOR key
8. 1000-V RELEASE button for setting 1000-V rating
4. Protective cover fitting
1. Display window (LCD)
Front view
Rear view
Side view
9. Battery cover setscrew
10. Battery cover
11. Shoulder strap guide
12. Earth terminal
13. Line terminal
WARNING
• Remove the probes from the tester and then turn off the MEAS key before opening the casing to replace the batteries.
• Do not touch the MEAS key during replacement. Otherwise, a high voltage may be produced.
CAUTION
Do not mix batteries of different types or new batteries with used ones.
• Always remove the batteries if the tester will not be used for a prolonged period of time. If you store the tester with the batteries left installed, fluid is likely to leak from them, resulting in a malfunctioning of the instrument.
Note
The data above is typical. Nevertheless, the battery life varies depending on the operating conditions. Check the batteries before measurement.
Manual
Thank you for purchasing the Yokogawa M&C MY40 Insulation Tester. To optimize all the functions of the instrument, please read this manual thoroughly before operating it.
Model MY40 Insulation Resistance T ester
Store this manual in a safe place for future reference.
1st Edition : Nov. 2000(YG) All Rights Reserved, Copyright ©2000, Yokogawa M&C Corporation
IM MY40-E
2nd Edition: July, 2001
1. Safety Precautions
Always observe the following instructions. Failure to do so may result in electrical shock or other dangers that may lead to serious injury or the loss of life. Yokogawa M&C Corporation is in no way liable for any damage result­ing from the user's mishandling of the tester. For safe use of this tester, the following safety symbols are used in the user's manual:
WARNING
This indicates that the operator must refer to an explanation in the user's manual in order to avoid the risk of serious injury or the loss of life.
CAUTION
This indicates that the operator must refer to an explanation in the user's manual in order to avoid the risk of injury or damage to the tester.
Note
This provides important information for handling the tester and clari­fies tester functions.
The following symbols are used on the MY40 tester.
Danger! Handle with Care.
This symbol indicates that the operator must refer to an explanation in the user's manual in order to avoid risk of injury or death of personnel or damage to the tester.
High-voltage T erminal
This symbol indicates a dangerous voltage level (terminals with volt­ages exceeding 1000 volts must be so marked). Nev er touch the termi­nals.
AC Voltage
This symbol indicates the presence of an AC voltage.
Double Insulation
This symbol indicates double insulation.
3. Measuring Functions and Additional Features
Measuring Functions
• Measuring the insulation resistance (four ratings) 125 V/ 200 M 250 V/ 200 M 500 V/ 2000 M 1000 V/ 2000 M
• Measuring AC voltages (sine wave at 45 to 400 Hz)
• Measuring conductor resistances (0 to 400.0 Ω) Continuity test (beeps for 40 or less)
Additional Features
• Memory feature (data saving) Up to 20 measured values of the insulation resistance for each rating can be saved to memory.
•Live-line alarm When an AC voltage of 40 V or more is applied between the input terminals, the ALARM LED flashes and the buzzer beeps (except during AC voltage measurement).
• Comparator When a measured insulation resistance is less than the refer­ence value setting, the LOW mark appears and the buzzer beeps.
• HOLD feature Measured insulation resistances are automatically held for approximately five seconds.
•High-voltage indication If a DC voltage exists between the terminals, the HV mark and the ALARM LED come on.
•Discharge feature The tester is designed to begin discharging when the MEAS key is turned off. It indicates the discharging status with a bar graph, and the HV mark and ALARM LED come on during discharging (and off when discharging is complete).
•Auto-power off The tester is automatically turned off when no key operations are performed for 10 minutes.
• LCD backlight The backlight can be turned on/off with the LIGHT key.
• Locking the MEAS key Pulling the MEAS key up allows for continuous measurement over a prolonged time.
• Lock for inadvertent setting of 1000-V range This mechanism protects the measured circuit from damage due to inadvertent measurement with the highest voltage (1000 V).
WARNING
Always observe the following instructions. Failure to do so may result in electric shock or other dangers that may lead to serious injury or the loss of life.
1. During Measurement of Insulation Resistance
A high voltage is present at the probes. Do not touch the measured
object or the earth or line terminal.
2. Immediately After Measurement of Insulation Resistance
• The probes or the measured object may remain highly charged. Do not touch them immediately after the completion of measurement.
3. During Measurement of AC Voltages
• Do not press the MEAS key while measuring AC voltages.
Voltage that exceeds the specified limit must not be applied to terminals.
4. Probes
• Use the probes supplied by Yokogawa M&C with this tester.
• Do not use probes that have deteriorated or are defective.
• Remove the probes from the measured object before attaching/
detaching the probes to/from the tester.
5. Insulation of Casing
• A puncture in the protective insulation may occur if there are any
cracks or other damage in the casing as a result of the instrument having been dropped or knocked against another object. Do not use the instrument before taking the necessary remedial measures; ask the manufacturer to repair it.
6. The Measured Object
• Turn off the power to the measured object before you begin
measuring insulation resistance.
• Avoid touching any electrified parts while using the tester in
a location with live electricity. For safety, it is recommended that you use a pair of rubber gloves or other alternative means.
7. Operating Environment
• Do not operate the tester in an atmosphere where any flammable
or explosive gas is present.
• Do not use the tester if there is condensation on it.
8. Disassembly
• No person, except personnel from Yokogawa M&C, is authorized
to disassemble this instrument.
4. Overrange Display Functions
OL Display
The tester displays the OL mark when the measured resis­tance exceeds the following values.
Insulation resistance measurement: For 1000 V and 500 V ratings: 2000 M For 250 V and 125 V ratings: 200 M
Conductor resistance measurement: 400
Display
The tester displays the exceeds the following values.
Insulation resistance measurement: For 1000 V and 500 V ratings: approx. 4000 M For 250 V and 125 V ratings: approx. 400 M
Change to Upper/Lower Ranges
•To upper range When the digital reading exceeds 4000, the measuring range changes to the next upper range.
•To lower range When the digital reading falls below 360, the measuring range changes to the next lower range.
Lower Resolution Display
If the digits below the decimal point are not stable, they can be automatically omitted to limit the resolution.
mark when the internal calculation
2. Components
6. Functions for Each Component
1. Display window (LCD)
Displays the measured values and the function marks (see section 5, “Display Functions”).
2. MEAS key
Used for measuring the insulation resistance only.
3. LIGHT key: Used for turning on/off the backlight. (MEM key): Also used for setting memory. (Enter key): Also used for confirmation for the comparator and
4. Protective cover fitting
5. COMP key: Used for setting the comparator.
(Select key): Also used for selection for the comparator and
6. ALARM LED
Flashes for the live-line alarm, and is lit as a warning for the high
-voltage alarm.
7. Function switch
A rotary switch for setting measurement ratings with the following positions:
• 1000 V/ 2000 MΩ: Insulation resistance measurement
• 500 V/ 2000 MΩ: Insulation resistance measurement
• 250 V/ 200 MΩ: Insulation resistance measurement
• 125 V/ 200 MΩ: Insulation resistance measurement
• AC voltage measurement (maximum input voltage: 600 V)
• Power off
• Conductor resistance measurement Continuity test CLr: Memory clear
8. 1000-V RELEASE button
Turn the function switch to the 1000 V rating position while press­ing this button.
9. Battery cover setscrew
Undo to replace batteries.
10. Battery cover
11. Shoulder strap guide
The shoulder strap is passed through it.
12. Earth terminal
Connection for earth probe.
13. Line terminal
Connection for line probe.
Note
• GUARD function is not a standard function.
memory functions.
memory functions.
7.
Using Protection Cover and Shoulder Strap
The tester comes with a protection cover and shoulder strap as standard accessories.
• The protection cover can be used as a front cover (for the display window) or as a bottom cov er. (It is set as the front cover when delivered from the factory.)
• Using the shoulder strap allows you to position the tester in front of your chest for ease of reading. Pass the strap through the shoulder strap guide and ad­just the length of the strap to allow you a good view of the tester.
• Remove the cover from the front, and attach it to the bottom using the fixing hole (B) on the surface of the cover. This is useful when the diaplay is too close to your body to see clearly (See the figure on the right).
•A belt on the cover which is fitted with pieces of Velcro, can be used to store the probes (Remove the probes from the tester terminals when storing them).
Protection cover fixing holes
Protection cover
Shoulder strap guide
Shoulder strap
A
B
5. Display Functions
Lit when the measured insulation resistance is being held. Flashes when the battery voltage is low. Lit when the rating setting is 1000 V/2000 MΩ. Lit when the rating setting is 500 V/2000 MΩ. Lit when the rating setting is 250 V/200 MΩ. Lit when the rating setting is 125 V/200 MΩ.
OL
Indicates overrange.
Indicates the extension bar graph. The extension bar graph shows how the measured value is
changing (trend) as follows: Note that the number of
change.
marks means the degree of
8. Before Measurement
: Change toward smaller values
: Change toward larger values
: Stable
Lit when:
•Pressing the MEAS key in insulation resistance measure­ment; and
• Residual electrical charges are present during discharg­ing.
Lit when the comparator is activated. Lit when the measured insulation resistance is lower than
the comparator setting value. Lit when the memory feature is in use.
Indicates the unit for AC voltage measurement. Indicates the unit for insulation resistances. Indicates the unit for conductor resistance measurement.
Indicates the continuity mark, which is lit when the measured insulation resistance is lower than 40 Ω.
Sub-display
Indicates:
• Comparator setting value or the storage number; or
• The storage number for memory.
Indicates the unit for insulation resistance for comparator.
1. Safety
• Read the handling precautions in this manual carefully.
• Make sure it is safe before starting measurement.
2. Battery Voltage V erification
• Make sure that the battery voltages are within the valid rat­ings (i.e. the
• If the batteries are low, replace them as specified in the bat­tery replacement section of this manual.
Note
As the mark indication depends on the load (current consumption), check that the mark does not appear for the largest load when short-circuiting the earth probe and the line probe (0 M).
3. Connecting the Probes
• Plug the earth probe into the earth terminal.
• Plug the line probe into the line terminal.
mark is not flashing).
WARNING
• Remove the probes from the measured object before attaching/ detaching the probes to/from the tester.
• Make sure the MEAS key is off when attaching/detaching the probes to/from the tester.
4. Function Switch Verification
Be sure to confirm that the function switch is set to the desired rat-
ing.
5. 1000-V Rating
When measuring with the 1000-V rating, see section 12, “Double-
action 1000-V Function”.
9. Battery Replacement
1. Loosen the battery cover setscrew, and then slide the cover off of the main unit.
2. Replace all of the 4 batteries at the same time and make sure the polarities of the new batteries are exactly as shown on the battery holder.
3. After replacing the batteries, attach the battery cover and tighten the setscrew.
10. Battery Life (Reference only)
For MY40 at rated 500 V/2000 M: Approximately 15 hours when in continuous operation with center value indicated (approx. 50 MΩ; with standard supplied batteries).
11. Measuring the Insulation Resistance
Note
If the data being held is invalid, “----” is displayed and it cannot be saved. In this case, perform measurement again and save the data.
Note
To stop deleting of data: Do not perform any key operation and wait for 10 seconds while the “CLr” indication mentioned in step (3) is flashing; or Turn the function switch to another rating.
Main display
Sub-display
Insulation resistance measurement (with comparator)
Measured value
Reference value
Comparator setting
Reference value
no.
Note
• To cancel the preset setting Pressing the key (Select) in step (8) returns the setting procedure to step (1). To stop the setting, turn the function switch to the off position.
• To set the preset values for another rating Turn the function dial to the desired rating (insulation resistance) in step (8).
COMP
Name Model No. Quantity
Protection cover 93013 1
Shoulder strap 99005 1 Line probe 98001 1 Earth probe 98002 1 Batteries 4
User,s manual IM MY40-E 1
Name
2. Hard case
58 mm, general-purpose
Description
Model No.
1. Spare probe tip for the line probe (Model 98001)
99011
105 mm, breaker pin
93015
Houses both the main unit, the line probe and the earth probe.
3. Accessory bag
B9108XA
Soft case, approx. 100 (W) 190 (H) 40 (D) mm
4.
Replaceable-type line probe
98005
Cable length: 1000 mm
5. Spare probe tips for the line probe (Model 98005)
6.
7.
8.
9.
B9600GN
B9635JK
B9600NZ
B9600NX
B9600NW
108 mm, sharp-pointed 338 mm, pickax-shaped
360 mm, hook-shaped 360 mm, for extension purposes
125(4.92)
103(4.06)
52.5(2.07)
1200(47.24)
1200(47.24)
Clr
Enter
Select
250V
1000V
500V
2000M
200M
OFF
600V MAX
V
125V
MEM
LIGHT
COMP
ALARM
INSULATION
TESTER
1000V RELEASE
MEAS
PULL
LOCK
Main unit
Earth probe
98002
Line probe
98001
LIGHT
1. Before Connecting the Probes
WARNING
• Turn off the power to the measured object before connecting or measuring insulation resistance.
• Electrical charges may be present in the cables attached to or metal of the electrical equipment being tested. Verify that the equipment is free from electrical charges before connecting the testing terminals.
• Be sure to confirm that the function switch is set to the desired rating.
Insulation resistance ratings: 125 V/ 200 M 250 V/ 200 M 500 V/ 2000 M 1000 V/ 2000 M
2. Setting the Function Switch
Turn the function switch to the desired measurement rating posi­tion. The initial display is “---- MΩ”.
3. Connecting the Earth Probe
• If the measured object is grounded, connect the earth probe clip to the measured object’s ground line.
• If the measured object is not grounded, this process may be omitted.
4. Connecting the Line Probe
•Bring the line probe into contact with the measured object, and then press the MEAS key. The display indicates the in­sulation resistance of the measured object.
Note
During measurement, exercise care to prevent the leadwire of the line probe from coming into contact with the ground, floor or any other object. Not observing this precaution may result in a failure to measure the correct insulation resistance.
5. After Measurement
WARNING
• Immediately after measurement, electrical charges resulting from the applied testing voltage may remain present in the probes or measured object.
• The tester, therefore, is designed to automatically begin discharging electricity upon completion of measurement. Verify that the ALARM LED turns off when discharging is complete.
12. Double-action 1000-V Function
The tester is equipped with the RELEASE button to protect the mea­sured circuit from damage due to inadvertent measurement at 1000 V. To select the 1000 V rating, turn the function switch to the position while pressing this button. T o cancel the 1000 V rating, turn the function switch to the off position or another rating position.
13. Live-line Alarm
Always turn off the power to the measured object before connecting or measuring insulation resistance. If an AC voltage of more than 40 V is applied, the ALARM LED flashes and the buzzer beeps. In this case, stop the measurement immediately and check the power supply volt­age.
14. Locing the MEAS Key (for Continuous Measurement)
The MEAS key , when pulled up to the right, can be lock ed to ensure the key remains turned on. Use this mechanism when making continuous measurement over a prolonged period. Note, however, that leaving the key turned on for an unreasonably long time will accelerate the dis­charge of the batteries.
15. HOLD Feature
Measured insulation resistances are automatically held for approximately five seconds. Turning off the MEAS key initiates holding.
19. LIGHT and COMP Keys
COMP
The
key is used as the Select key for settings and storage num-
bers of the comparator and memory functions.
LIGHT
The
key is used as the Enter key for settings and storage num­bers of the comparator and memory functions. Pressing the Enter key while the display is flashing, confirms selection of the setting or the storage numbers.
•When setting the memory or comparator function
Turn the function switch to an insulation resistance rating position while pressing and holding the displayed digits stop flashing and remain on, and the buzzer sounds. Or position the function switch to a rating of the insulation resistance first, press the hold the key until the buzzer sounds.
Backlight
LIGHT
key or the
• The backlight remains off while the comparator is set.
• The backlight is lit when memory is in use.
LIGHT
key or the
COMP
key when all the digits appear, and
COMP
key until all the
20. Memory Feature (Data Saving)
Up to 20 measured values of the insulation resistance for each rating can be saved to memory.
Displaying data
(1)Turn the function switch from power-off to a measurement rating
while pressing and holding the “MEM” appears and “no.01” (storage number) flashes on the sub­display.
(2)Select a storage number.
If an insulation resistance data is saved with the selected (displayed) number, the insulation resistance value is displayed. If any data is not saved with the selected (displayed) n umber, “----” is displayed.
Press the no.20).
COMP
key (Select) to select a storage number (no.01 to
LIGHT
key (MEM).
Saving data
First select a storage number as in steps (1) and (2) above. Over­writing data is possible. (3)Perform measurement with the MEAS key. (4)Turn off the MEAS key. The measured value is held and starts
flashing. Press the flashing to save it to memory (it is held for five seconds in which time the next data cannot be saved).
Deleting data
Data saved can be collectively deleted. (1)Turn the function switch from power-off to the continuity test po-
sition (Clr) while pressing and holding the (2)“MEM” and “CLr” appear. (3)Press the (4)Press the
sounds and all data are deleted (do not change the position of
the function dial for two seconds when “CLr” is displayed). The
tester changes its mode to measurement of conductor resis-
tances.
Turning off the memory feature
Turn the function switch to the off position.
LIGHT
key (Enter) while the measured value is
LIGHT
key (MEM).
LIGHT
key (MEM). “CLr” starts flashing.
LIGHT
key (MEM) again while “CLr” is flashing. The buzzer
16. Measuring AC Voltages
WARNING
Do not press the MEAS key while measuring AC voltages.
• Voltage that exceeds the specified limit (600 V) must not be applied to terminals. Doing so causes all digits of the measured voltage to flash and the buzzer to beep.
1. Setting the Function Switch
Turn the function switch to an AC voltage measurement (V) position.
2. Connecting the Earth Probe
• If the measured object is grounded, con­nect the earth probe clip to the mea­sured object’s ground line.
• If the measured object is not grounded, this process may be omitted.
3. Connecting the Line Probe
•Bring the line probe into contact with the measured object. The display indicates the AC voltage of measured object.
17. Measuring Conductor Resistance (Continuity)
The tester can measure the conductor resistance of 0-400 Ω. The buzzer beeps for resistances approximately 40 or lower.
1. Setting the Function Switch
Turn the function switch to a conductor resistance measurement ( ) position.
2. Connecting the Earth Probe
Securely connect the earth probe to the measured object.
3. Connecting the Line Probe
Bring the line probe into contact with the measured object. The dis­play indicates the resistance of the measured object.
Note
18. Auto Power-off
The tester is automatically turned off when no key operations are per­formed for 10 minutes. The buzzer sounds 9 and a half minutes after the last key operation (at 1-sec intervals). If any measurement or key oper ation is not made while the buzzer sounds, the tester is turned off. However, it is not turned off when measurement is in progress or an alarm occurs.
To use the tester after the auto power-off is triggered, press the or the proceeding with the desired operation.
22. Specifications (JIS C1302-1994 compliance)
Rating
Center Value Indicated (M) 1st Effective Measuring Range (M) 2nd Effective Measuring Range
Lower Limit (M) 2nd Effective Measuring Range
Upper Limit (M) Lower Measuring Limit of
Resistance Rated Current (mA) AC Voltage Measuring Range (V)
Tolerances under the above conditions
Insulation resistance measurement: ±(2% of rdg + 6 dgt) within the 1st effective measuring range ± (5% of rdg + 6 dgt) within the 2nd effective measuring range (Lower limit) ±(5% of rdg) within the 2nd effective measuring range (Upper limit) Zero value indicated: 6 dgt max. AC voltage: ±(2% of rdg + 6 dgt) Conductor resistance measurement: ±(2% of rdg + 8 dgt) No-load voltage: within 130% of the rated voltage Short-circuit current: 2 mA or less
(M)
125V/200 M 250V/200 M
5
.0200 to 10.00
0 to.0199
10.01 to 200
0.125
1 to 1.2
5
.0500 to 20.00
0 to .0499
20.01 to 200
0.25
1 to 1.2
Standard test conditions
Ambient temperature and humidity: 23 ±5°C at 45 to 75% RH Position: Horizontal (within 5 degrees) Influence of external magnetic field: Earth magnetism Battery voltage: indicated.)
WARNING
• Turn off the power to the measured object before connecting or measuring conductor resistance.
You do not have to press the MEAS key when you measure conductor resistances.
COMP
key, or turn the function switch to the off position once before
500V/2000 M
50
1.000 to 500
0 to .999
501 to 2000
0.5
1 to 1.2
0 to 600
Within effective range of the battery (the mark must not be
1000V/2000 M
50
2.000 to 1000
0 to1.999
1001 to 2000
2
0.5 to 0.6
21. Comparator
When a measured insulation resistance is less than the reference value setting, the LOW mark appears and the buzzer sounds. Also the mea­sured value is automatically held for 5 seconds.
Selecting the reference value
Select from three preset values for each rating. Default values: no.01: 0.1 M/ no.02: 0.2 M/ no.03: 0.4 M
(1) Turn the function switch to a measurement rating.
COMP
(2) Press the (3)
display.
(4) Pressing the
play as follows.
0.1 M / 0.2 M / 0.4 M / Comparator off (no display) The reference value currently displayed is selected as the compar a­tor setting.
Setting the preset values
Each of the default preset values no.01 to no.03 can be changed independently.
(1) Turn the function switch from power-off to a desired rating while
pressing and holding the flashes. Press the
(2) Confirm the setting no. with the
The reference value on the main display can be set.
(3) Select the position of the decimal point with the
LIGHT
key
(4) Confirm the decimal point with the (5) Select the number for each digit sequentially.
Pressing the
key.
appears and the reference value appears on the sub-
COMP
key (Select) changes the reference value dis-
COMP
key. “no.01” on the sub-display
COMP
key (Select) to select no.02 or no.03.
LIGHT
key (Enter).
COMP
key (Select).
key (Enter).
COMP
key (Select) changes the number as follows.
Sub-display
(6) Confirm the number with the (7) Set the number for the next digit. (8) When settings for all the digits are complete, the ref erence v alue
starts flashing.
(9) Confirm the reference value with the
sounds and the setting ends. The tester changes its mode to measurement of insulation resistances.
Repeat steps (1) to (9) to change other preset values.
Position of decimal point
0 1 2 ··· 8 9 0
24. Accessories
25. External Dimensions
Standard Accessories
Optional Accessories
Main display
LIGHT
key (Enter).
LIGHT
key (Enter). The b uzzer
(apptox. inch)
Unit: mm
Item Limit
Response time
Effect of temperature
Effect of humidity Within tolerance Effect of external
magnetic field
Effect of AC component of voltage at measuring terminals
Insulation resistance
Withstand voltage
Resistance to vibration
Resistance to shock
Endurance
Protection against mistaken input
23. General Specifications
Operation temperature and humidity Storage temperature and humidity Battery External dimensions Weight
Digital indication: 3 sec or less Bar graph indication (static) value: approx. 2 sec
± 2% or less
3% or less of indication
10% or less of indication
50 M or more (between electric circuits and outer case) There must not be an abnormality
(between electric circuits and outer case). There are no mechanical and electrical damage.
The specifications for tolerances must be met. There are no mechanical and electrical damage.
The specifications for tolerances must be met.
The specifications for tolerances must be met.
There must not be an abnormality.
0°C to 40°C at 90% RH or less (no condensation)
–10°C to 60°C at 70% RH or less (no condensation)
Four AA-size (R6) Approx. 125 (W) × 103 (H) × 52.5 (D) mm Approx. 420 g (main unit and batteries only) Approx. 600 g (main unit, batteries, protective cover, earth probe and line probe)
Test condition
From the instant the resistors whose values correspond to central indication and zero indications are abruptly connected, to when
the pointer reaches a level within tolerance
1st effective measuring range: maximum, center, and minimum indicated values Deviation from those values when ambient temperature is varied from 20°C by ± 20°C.
When the tester is left for 1 hour with the humidity at 90% RH The change of indication when an external field of 400 A/m DC is
applied in the most affected direction A change when a capacitor with 5 µF ±10% is connected in parallel to
a resistor corresponding to central indication connected
When a voltage of 1000 V is applied.
When a sine wave, or the like, is applied between the electric circuits and the outer case at 5550 V AC and 50/60 Hz for 1 minute
When a vibration frequency of 16.7 Hz and peak-to-peak amplitude of 4 mm is applied in the direction of the axis of the moving part for 1 hour
When shock of 1000 m/s the moving part and in a direction perpendicular to the axis
When a resistor corresponding to the central indication is connected across the measuring terminals and the power switch is repeatedly turned on and off 10 000 cycles at a rate of about 300 cycles/hour
When an AC voltage of 50/60 Hz at 1.2 times the rated measuring voltage is applied to the measuring terminals for 10 seconds
2
is applied twice in the direction of axis of
1. 990 11
2.
9. JK
3.
4. 980 05
5. GN
6. NW
7. NX
8. NZ
26. Maintenance
Safety standards
EMC standards Effect of radiation
immunity
EN61010-1:1993 and EN61010-2-31:1995 Insulation class2,Pollution degree 2 Overvoltage category3 (maximum input voltage: 600 V) EN55011; 1998 Group1 ClassB EN61326-1; 1997+A1; 1998 At the strength of radio-frequency electromagnetic field of 3V/m
• Insulation resistance measurement 1st effective measuring range : ± (5% of rdg +12dgt) 2nd effective measuring range : ± (10% of rdg +12dgt)
• AC Voltage measurement : ± (5% of rdg +12dgt)
• Conductor resistance measurement : ± (10% of range)
Storage Conditions
• Temperature and humidity:-10°C to 60°C at 70% RH or less
• Remove the batteries before storing the tester.
• Avoid storing the tester in a location where there is: moisture; exposure to direct sunlight; a high-temperature heat source nearby; exposure to severe mechanical vibrations; a large amount of dust and/or salt, or a corrosive gas.
Removal of Dirt Do not use volatile solvents (such as paint thinners or benzine) as they are likely to cause discoloration. Wipe off dirt with a cloth dampened water or alcohol.
Calibration Cycle It is recommended that the tester be calibrated once every year for correct operation; ask Yokogaw a M&C to do the periodic calibration for you.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
27. Corrective Measures in Case of Failure
If the instrument does not operate properly after taking the corrective measures shown below or any other failure that is not covered here occurs, contact the vendor from which you purchased the instrument.
Failures
• The tester displays nothing after turning the function switch to the on position.
• The display is light in color.
• The measured values are erroneous.
Items to Check
• The batteries are installed properly and their power levels are not low.
• The measuring probes are connected correctly and are not dam­aged.
• Whether the failure reoccurs after turning off the power and retry­ing the operation.
Error Messages
Err.0: An internal operation failure.
Turn off the power and retry the operation. * If the failure reoccurs, the tester needs repairing.
Err.1: Cannot save the comparator or memory settings.
Measurement functions other than the comparator and memory functions operate normally. Settings and data saved without the error indication (Err.1) can be used. * If the failure reoccurs, the tester needs repairing.
Err.2: An internal operation failure.
Turn off the power and retry the operation. * If the failure reoccurs, the tester needs repairing.
About This Manual The contents of this manual are subject to change without prior notice. Under absolutely no circumstances may the contents of this manual be transcribed or copied, in part or in whole, without obtaining permis­sion. Every effort has been made to ensure accuracy in the preparation of this manual. Should any errors or omissions come to your attention however, please inform Yokogawa M&C Corporation accordingly.
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