Sanwa mg5000 User manual

MG5000
HIGH VOLTAGE
DIGITAL INSULATION RESISTANCE TESTER
INSTRUCTION MANUAL

Table of Contents
[1]
SAFETY PRECAUTIONS -Before use, read the following safety precautions.–
1-1 Explanation of Warning Symbols............................................. 1
1-2 Warning Messages for Safe Use ............................................. 1
1-3 Overload Protection................................................................. 2
[2] APPLICATIONS AND FEATURES
2-1 Applications ............................................................................. 2
2-2 Features ................................................................................... 3
[3] NAMES OF COMPONENT UNITS
3-1 Main unit .................................................................................. 3
3-2 Display ..................................................................................... 4
3-3 Test leads................................................................................. 4
3-4 Optional Accessories............................................................... 5
[4] DESCRIPTION OF FUNCTIONS
4-1 Power/Function Switch............................................................ 5
4-2 Starting/Stopping Measurement : TEST Button ...................... 5
4-3 BACKLIGHT Function : LIGHT Button..................................... 5
4-4 DAR/PI Display Switching : DISPLAY Button .......................... 5
4-5 Auto Hold................................................................................. 5
4-6 Auto Power Off ........................................................................ 6
4-7 Battery Monitor ........................................................................ 6
[5] MEASURING PROCEDURE
5-1 Start-up Inspection .................................................................. 7
5-2 Voltage Measurement : AC/DC V............................................. 7
5-3 Insulation Resistance Measurement........................................ 8
5-4 Discharge Function .................................................................11
5-5 DAR/PI Measurement ............................................................ 12
5-6 Voltage Characteristics at Measuring Terminals.................... 14
5-7 Using the GUARD Terminal.................................................... 15
[6] MAINTENANCE
6-1 Maintenance and Inspection.................................................. 15
6-2 Calibration and Inspection..................................................... 16
6-3 Storage .................................................................................. 16
6-4 Battery Replacement ............................................................. 16
[7] AFTER-SALE SERVICE
7-1 Warranty and Provision...........................................................17
7-2 Repair......................................................................................17
7-3 SANWA Website .................................................................... 18
[8] SPECIFICATIONS
8-1 General Specifications........................................................... 19
8-2 Measuring Ranges and Accuracies ....................................... 20

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[1] SAFETY PRECAUTIONS
-Before use, read the following safety precautions.-
Thank you for purchasing the Sanwa MG5000 high voltage digital
insulation resistance tester. Before use, please read this manual
thoroughly to ensure correct and safe use. Keep this instruction
manual together with the product.
Be sure to read the information under “ WARNING” and
“ CAUTION” that is intended to prevent personal injury such as
burn and electric shock and other serious accidents.
1-1 Explanation of Warning Symbols
The meaning of the symbols used in this manual and attached to
the product is as follows.
: Very important instruction for safe use.
• The WARNING messages are intended to prevent accidents to
operating personnel such as burn and electrical shock.
• The CAUTION messages are intended to prevent incorrect
handling and measurement which may damage the product.
Symbols attached to the product

: Symbol soliciting reference to this manual before use

: Do not touch this part because a dangerous high voltage is applied
: Double or enhanced insulation
: Earth (ground)
:
The AC incorrect input protection voltage in the insulation
resistance measurement is 1000 V
1-2 Warning Instruction for Safe Use
The following instructions are intended to prevent personal
injury such as burn and electric shock. Be sure to follow them
when using the tester.
1. Although the tester is equipped with the voltage
measurement function, never use it to measure voltage of
electric circuits that exceed CAT.IV 600 V/CAT.III 1000 V.
2.
Pay special attention when measuring the voltage of AC 33 V
rms (46.7 V peak) or DC 70 V or more to avoid injury.
3. Never input signals exceeding the maximum rated input
value (see 1-3).
4.
Never use the tester for measuring voltage of lines connected to
equipment (e.g. motors) that generates induced or surge voltage
since it may exceed the maximum allowable overload input.
WARNING

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5. Never use the tester if the tester, test lead or alligator clip is
damaged or broken.
6.
Never use the tester with the rear case or battery lid removed.
7. When using the test leads, keep your gingers behind the finger
guards of the test probe and the barrier of the alligator clip.
8. During measurement, do not change the function or range.
9.
Before starting measurement, make sure that the function and
range are properly set in accordance with the measurement.
10. Never use the tester when it is wet or with wet hands.
11. Do not use the instrument in a place where corrosive or
explosive gas is produced.
12. Never attempt repair or modification, except for battery
replacement.
13. To ensure safety and maintain accuracy, check the tester
in the start-up inspection as well as in the inspection to be
performed at least once a year.
14. The tester is for indoor use only.
15. Wear insulating protective gear when using the meter with
equipment containing a hazardous live part. Also be sure
to observe your local and national safety rules.
16. Always use the meter in a specified method to prevent the
protective function from being imperiled.
1-3 Overload Protection Input Values
Function Input terminals Max. rated
input value
Max. overload
protection input
V
LINE(L). = Earth(E)
DC/AC 1000 V DC/AC 1100 V
MΩ Voltage input
prohibited DC/AC 1000V
- GUARD(G) Voltage input
prohibited DC/AC 30V
[2] APPLICATIONS AND FEATURES
2-1 Applications
This instrument is a high voltage digital insulation resistance tester
capable of measuring voltages within the range of 600 V under
IEC61010-1 CAT.IV and 1000 V under CAT.III.