【1】Read First: Safety Information
We thank you for your purchasing our product, the battery-driven
insulation resistance tester.
This is a DC resistance tester developed under the principle to provide
new and unique design and function for the measurement of insulation
resistance of each kind of electric equipments. Since this tester
generates high voltage, we recommend that you read this instruction
manual thoroughly, and treat the tester correctly and safely.
The symbols used on this tester and in this instruction manual denotethe following meanings:
Be careful as the high voltage is impressed.
Be careful because there is a possibility of bodily injury or thedestruction of equipment.

WARNING

PDM1529S/PDM5219S
INSULATION RESISTANCE TESTERINSTRUCTION MANUAL

Dempa Bldg., 4-4 Sotokanda 2-Chome
Chiyoda-ku, Tokyo 101-0021, Japan

・For storing the instrument, avoid hot, cold or humid places or places
under direct sunlight or where condensation is anticipated.
(See 9.1 Storage temperature/humidity)
・Be sure to remove the battery when the instrument is not to be
used for a long period.

【5】Description of Functions
・Function control knob and MΩ(insulation resistance) measuring switch
by operating these two switches, the functions and ranges can be
set as shown below.

Position of Function Control KnobMΩ Measuring Switch (*)

1000 V/2000 MΩ
500 V/100 MΩ
AC 600 V
250 V/100 MΩ
125 V/100 MΩ
1000 V/2000 MΩ
500 V/100 MΩ
AC 600 V
250 V/100 MΩ
125 V/100 MΩ
DC 60 V・BATTERY CHECKDC 60 V・BATTERY CHECK

Raise left end
Press right end

DamagedPointer at 0 position
when main unit is placed
horizontally?

To carry while heldby handYesA*

Stop using.
Repair it.

Place main unithorizontally,
adjust pointerNo 0 position adjusterwith screwdriverto bring pointerto 0 position.

Pointer is on left of battery
check scale（BATT）?

Normal. Proceed to measurement.

6.2 How to Check the Battery (BATTERY CHECK)
Prior to MΩ (insulation resistance) measurement, be sure to check thebattery. A consumed battery will cause not only measurement errors
but danger due to erroneous measurement.
For checking methods, refer to 6.1 Start-up Check.
Do not check the battery for more than 5 seconds.

REFERENCE⑤ Connect the tip of the red pin-type adapter to the other side of
the object measured.
CAUTION : If the meter deflects in this state, the measuring
object is charged. Be sure to remove the voltage
prior to measurement.
⑥ Turn on the MΩ measuring switch.
(See [5] Description of Functions)⑦ Read the indicated value. Use the appropriate scale according to
the position of the function control knob (set range).
(See the following fig.)⑧ Turn off the MΩ measuringswitch.
⑨ Discharge the high voltage
charged in the measuring object.
(See 6.4 Discharge Function.)

6.4 Discharge Function
1) Reason of a need to discharge
For safety, high voltage remaining in capacitive measuring objects
such as capacitors and electric wire must be discharged to prevent
accidents.
2) Discharging method
This procedure follows the step ⑧ of 6.3-4)① When the MΩ measurement has been completed, turn off only
the MΩ measuring switch with the test pin and the alligator clip
connectedto the measuring object.
② Then the pointer deflects to the right and its deflection becomes
smaller as time passes (indicating the charged charge is being
discharged).
③ When the pointer stops at zero (∞ of the MΩ scale) and discharge
has been completed, conduct the steps ⑩ and ⑪ of 6.3-4)

3)

WARNING
1. Do not apply a voltage exceeding the maximum rated voltage of
600 VAC.
2. During measurement, do not operate the function control knob.
3. Do not measure a voltage with the MΩ measuring switch beingpressed or raised.
4. When the circuit to measure has a breaker, measure the voltage
on the secondary side (load side).
5. To prevent electric shock, do not touch the metal part of the pin
plug and clip.

⑩ First remove the red test pin from the object measured, and thendisconnect the black alligator clip.
⑪ Be sure to turn the function control knob to the position of OFF.

()

1000 V
Scale of 2000 MΩ range(PDM5219S is a scale common to all ranges.)
－ 8 －

－ 9 －

－ 10 －② Turn the function control knob to DC 60 V / BATTERY CHECK.
③ Connect the black alligator clip to the − side of the object (circuit)measured, and connect the tip of the red pin-type adapter to the + side.
④ Read the indicated value on the DCV scale.
⑤ First remove the red test pin from the object measured, and thendisconnect the black alligator clip from it.
⑥ Turn the function control knob to the position of OFF.

8.1 Warranty and Provision
Sanwa offers comprehensive warranty services to its end-users and toits product resellers. Under Sanwa's general warranty policy, each
instrument is warranted to be free from defects in workmanship ormaterial under normal use for the period of one (1) year from the date ofpurchase.
This warranty policy is valid within the country of purchase only, andapplied only to the product purchased from Sanwa authorized agent or
distributor.
Sanwa reserves the right to inspect all warranty claims to determine theextent to which the warranty policy shall apply.This warranty shall not
apply to test leads, disposables batteries, or any product or parts,
which have been subject to one of the following causes:
1. A failure due to improper handling or use that deviates from the
instruction manual.

2. A failure due to inadequate repair or modification by people other than
Sanwa service personnel.
3. A failure due to causes not attributable to this product such as fire,
flood and other natural disaster.
4. Non-operation due to a discharged battery.
5. A failure or damage due to transportation, relocation or dropping after
the purchase.
8.2 Repair
Customers are asked to provide the following information whenrequesting services:
1. Customer name, address, and contact information
2. Description of problem
3. Description of product configuration
4. Model Number
5. Product Serial Number
6. Proof of Date-of-Purchase
7. Where you purchased the product1) Prior to requesting repair, please check the following:
Capacity of the battery, polarity of installation and discontinuity of thetest leads.
2) Repair during the warranty period:
The failed meter will be repaired in accordance with the conditions
stipulated in 8-1 Warranty and Provision.
3) Repair after the warranty period has expired:
In some cases, repair and transportation cost may become higher
than the price of the product. Please contact Sanwa authorized agent/ service provider in advance.
The minimum retention period of service functional parts is 6 years
after the discontinuation of manufacture. This retention period is therepair warranty period. Please note, however, if such functional parts
become unavailable for reasons of discontinuation of manufacture,etc., the retention period may become shorter accordingly.
4) Precautions when sending the product to be repaired
To ensure the safety of the product during transportation, place theproduct in a box that is larger than the product 5 times or more involume and fill cushion materials fully and then clearly mark “Repair
Product Enclosed” on the box surface. The cost of sending andreturning the product shall be borne by the customer.
8.3 SANWA web site
http://www.sanwa-meter.co.jp
E-mail: exp_sales@sanwa-meter.co.jp－12－－ 13 －① Remove two battery lid
Battery lid
securing screws.
② Replace the consumed
Snap terminal
battery that is connected tothe snap terminal with a newone.
③ Set the battery in the original
6LR61 Battery
place and secure the battery(6LF22)lid with screws.
Be sure to turn the function control knob to the position of
OFF prior to replacing the battery.
（9 V）

Be sure to use the alkaline battery 6LR61 (6LF22) x1(9 V)【8】After-Sales Service－ 7 －CAUTION
AC voltages of waveforms otherthan sinusoidal waveforms andfrequencies other than 50 to 60
Hz will cause an indication error.
② Turn the function control knob to
AC 600 V.
③ Connect the black alligator clip to theearth (grounding) side of the object
measured, and connect the tip of the
red pin-type adapter to the charging
side of the object measured.
④ Read the indicated value on the ACV scale.
⑤ First remove the red test pin from the object measured, and thendisconnect the black alligator clip from it.
⑥ Turn the function control knob to the position of OFF.

6.5 Measurement of ACV (AC voltage) (Measuring range is the AC 600 V range only)

Measuring object
Sinusoidal AC voltages (ACV) such as lighting line voltages can be measured.
2) Measuring method① Insert the black measuring cord to which the black alligator clip
(or black pin-type adapter) is attached into the EARTH (ground)measuring terminal, and the red measuring cord to which the red
pin-type adapter is attached into the LINE measuring terminal.

ScrewsCAUTION
1. When the object measured is grounded, usually connect theblack EARTH (ground) test lead to the grounded side and the
red LINE test lead to the circuit. (When this connection is used, ameasurement value becomes smaller than a value obtained by
the reverse connection.)
2. To prevent a measuring error, keep the test lead connected to theLINE side out of contact with the measuring object and ground (earth).
3. The insulation resistance varies largely depending on temperatureand humidity. It is also influenced by a voltage to apply(measuring voltage).
Normally as temperature, humidity and voltage increase, theinsulation resistance decreases.

Yes
Turn MΩ measuring switch andfunction control knob to OFF.

－ 6 －【7】Battery Replacement

WARNING
1. Never apply a voltage to the measuring terminal when the tester
is in the MΩ measuring range.
2. Prior to measurement, disconnect the measuring object (circuit)from the power supply.
3. Prior to measurement, make sure no voltage is applied to thecircuit to measure by the AC 600 V range.
4. During measurement, a high voltage is generated. Do not touch
the test pin, clip and measuring object.
5. The tester and measured circuit have been charged by high voltage
immediately after the measurement. Be careful not to get electric
shock.
6. There is a possibility of an accident of electric shock. After themeasurement, be sure to discharge the high voltage charged in
the measuring object. (See 6.4 Discharge Function)

Pointer is at almost 0 MΩ
position of insulation resistancescale ?

－ 5 －Selection of a measuring range
When measuring insulation resistance, select a range of the voltagethat is close to the voltage used by the circuit to measure, unlessotherwise specified.
For example, when measuring insulation resistance of 100 V home
appliances and indoor wiring, select the 125 V rated measuring
voltage range and when measuring 200 V power circuits, selectthe 250 V rated measuring voltage range.
4) Measuring method① Power off the measuring object.
② Insert the black measuring cord to which the black alligator clip
(or black pin-type adapter) is attached into the EARTH (ground)measuring terminal, and the red measuring cord to which the red
pin-type adapter is attached into the LINE measuring terminal.
③ Turn the function control knob to a desired rated measuring
voltage range.
④ Connect the black alligator clip to the object measured. Usuallyconnect the EARTH (ground) measuring terminal to thegrounding side.

6.3 Measurement of MΩ (Insulation Resistance)

Yes

－ 4 －

Rated measuring voltage
250 V/500 V/1000 V
125 V/250 V/500 V()

500 V,250 V
Scale of 100 MΩ
range〔Example. PDM1529S 〕

Alligator clip:Black
CAT.Ⅲ 600 V

CAUTION
・The panel and the case are not resistant to volatile solvent andmust not be cleaned with thinner or alcohol. For cleaning, use dry,soft cloth and wipe it lightly.
・The panel and the case are not resistant to heat. Do not place theinstrument near heat-generating devices (such as a soldering iron).
・Do not store the instrument in a place where it may be subjected
to vibration or from where it may fall.

No

6.1 Start-up Check

Measuring object
Measurement of insulation resistance (M Ω) of electric equipment
and circuits.
Rated measuring voltage

Removable
test pin covers

Red
Pin-type adapter Barriers Test pins
Black【4】Cleaning and storage

Release push switch and replace test
lead with new one and re-check.
If replacement does not work, repair

Turn on MΩ measuring switch.

WARNING

When not coveredRed
Measuring cords
Black

No
Turn function control knob
and MΩ switch to OFF.

Turn function control knob to
AC 600 V・250 V/500MΩ.

1. Do not use a damaged tester or test lead.
2. Make sure test lead wiring is not broken.
3. When testing the continuity of a test lead, the measuring terminals
are under a high voltage. Be careful of electric shock.
4. To prevent electric shock and battery consumption, be sure toturn the MΩ measuring switch and function control knob to OFF
after measurement.

Function control knob

Removable test pin covers
When not covered : CAT.Ⅱ 1000 V
When attached : CAT.Ⅲ 600 V

Turn on MΩ
switch.

Short alligator clip (or test pin) on black
test lead with test pin on red test lead.

【6】Measuring Method

Line side measuringterminal (LINE)

Test Lead (TL-509S)

Replacebattery.
See 7.4
Battery
Replacement.

Turn function control knob
to DC 60 V/BATTERY CHECK.

Connect black test lead to EARTH terminal
and red test lead to LINE terminal.

*
Join by hook

Battery check
scale

Earth side measuringterminal (EARTH)

Check measuring lead wiring breakage.

PDM1529S

DCV scale－ 3 －Check appearance and pointer 0 position.

No damaged

Test leadcompartment

Pointer
0 position
adjusterMΩ(insulation
resistance)measuringswitch

2.2 Features・ This tester has the minimum number of scale graduations andemploys a three-range system for easy viewing and readability.
・ The measured voltage is maintained until the low insulation resistancevalue at the rated current specified in IEC61557-2.

PDM5219S

1. The rated current of this tester is 1 mA (1 mA to 1.2 mA).
2. The no-load voltage is within 1.25 times the rated measuring
voltage.
3. While measuring there may be an oscillator noise from the meter,
but this is not a malfunction.

Model
PDM1529S
PDM5219S

2.1 Applications
・DC insulation resistance tester to measure the insulation resistanceof electric lines and electric equipment.

Main unit andtest lead damaged
in appearance?

Body compartment

ACV scale

Barriers

Check battery.

Body securing band

Pointer【2】Applications and Features

Check start.

To hang from the neckduring measurementMΩ scale(insulation resistance)

Maximum overload
protection input
AC 720 V
DC 120 V

Before starting measurement, check the “appearance”, “pointer 0
position” (*), “battery” and “measuring lead” in this order. (*The pointer 0
position is the 0 position of the DC 60 V scale or ∞ position of the MΩ
scales.)OFF AC 600 V range
1000 V/2000 MΩ range
500 V/100 MΩ range
ON
250 V/100 MΩ range
PDM5219S
125 V/100 MΩ range
DC 60 V range
OFF
BATTERY CHECK range
ON

Maximu rating
input value
AC 600 V
DC 60 VHow To Use Carrying Case
During measurement, set the case as illustrated and hang it fromthe neck.
・Lid turns in
direction at pivot the A.
・Lay it along the bottomof the box and secure it
by hooks marked by*【3】Front View and Name of Each Part

Maximum Overload Protection Input
Function(Range)ACV (600)
DCV (60)－ 2 －Set Range (Function)

・Meter zero position adjustment
If the meter pointer is not on the ∞ graduation line of the MΩ scale
when the function control knob is at OFF, adjust the zero position
with a screwdriver.

2)

CAUTION
Remove components such as semi-conductors and apparatuses from the circuitof measuring object to avoid damages when withstand of the object is unknown
or lower than rated measuring voltage of a resistance insulation tester, especiallyin case of the objects you measure connected with PCs or computers.

－ 1 －PDM1529S＊The MΩ measuring switch is turnedon by the following operation.
① ON only when the right end of thelever is pressed with a finger.
(OFF when the finger is released)② Continuously ON when the left
end of the lever is raised.
(OFF when it is laid down)

1)

To ensure that the meter is used safely, follow all safety and operating
instructions.
11. Never use tester for high power or high voltage circuit.
12. Pay special attention when measuring the voltage of AC 33 Vrms
(46.7 V Peak) or DC 70 V or more to avoid injury.
13. Disconnect power source of the measured circuit before
measuring insulation resistance.
14. High voltage is generated while measuring insulation resistance.
Be cautions of electric shock.
15. After measuring insulation to avoid electric shock. Be sure todischarge the high voltage charged.
16. Never apply an input signal exceeding the maximum rating input value.
17. Never use tester for measuring the line connected withequipment (i.e. motors) that generates induced or surge voltage
since it may exceed the maximum allowable voltage.
18. Never use tester if the tester or test leads are damaged or broken.
19. Never use uncased tester.
10. Always keep your fingers behind the Barriers on the probe when
making measurements.
11. Be sure to disconnect the test pin from the circuit when changing
the function.
12. Never use tester with wet hands or in a damp environment.

13. Use test leads matching the measurement category of the object
measured. If the measurement categories of the instrument and test
leads were different, the lowest measurement category would be applied.
14. When handling equipment containing a hazardous live part, besure to wear insulative protection gear to prevent accidents. Also
be sure to observe your local and national safety regulations.
15. Do not attempt any alterations of original specifications.
16. To ensure safety and maintain accuracy, calibrate and check thetester at least once a year.
17. Indoor use.
18. Do not use the instrument in a place where corrosive or explosive
gas is produced.
19. To prevent the protection function of the tester from being
spoiled, do not use it in a method other than specified.

1)【9】Specifications
9.1 General Specifications
AC rectifying method : Half-wave rectification(Mean value indication rms value converted)
Meter specification : Inner-pole type taut-band system, 48μA
Battery consumption : Checked by BATTERY CHECK range.
Allowable temperature/humidity range: 23±5 ℃, 75 % RH max., no condensation.
Service temperature/humidity : 0～43 ℃, 80 % RH max., no condensation.
Storage temperature/humidity: -10～50℃, 70 % RH max., no condensation.
Service ambient condition : Altitude 2000 m max., environmental pollution Ⅱ.
Power supply: Layer built type alkaline battery 6LR61(6LF22) x1 (9 V)＊Factory-preinstalled battery
A battery for monitoring is preinstalled before shipping, therefore it may
run down sooner than the battery life specified in the instruction manual.
The “battery for monitoring” is a battery to inspect the functions andspecifications of the product.
Max. power consumption : Approx 2.6 W (at 1000 V/2000 MΩ range)
Battery life
: When the lower limit measurement resistancevalue that can maintain the rated output voltage
is measured and if one cycle for the measurement is defined as ON for 5 seconds and OFF
for 25 seconds, the battery life is 500 cycles.
Degree of IP: IP20EMC Directive, RoHS Directive : IEC61326 (EMC), EN50581 (RoHS)
Safety: IEC61010-1, IEC61010-2-030 CAT.Ⅲ600 V *IEC61010-2-033, IEC61010-031* Measurement Category III : Line from the primary side or branch of equipment(CAT. III) which directly takes in electricity from a distribution
board to the receptacle.

Year of manufacture : The first two digits of the serial number on
the bottom of this product indicate the lasttwo digits of the year.
Size and mass
: 144 (H ) x 99 (W ) x 43 (D ) mm, approx. 310 g
Accessorie: Test lead TL-509S, 1 set
Carrying case C-09S, 1 piece
Instruction manual, 1 copy
－ 14 －

6.6 Measurement of DCV (DC voltage) (Measuring range is the DC 60 V range only)
WARNING
1. Do not apply a voltage exceeding the maximum rated voltage of 60 VDC.
2. Keep in mind the warnings of 6.5 described earlier.
1)

Measuring object
DC voltages of batteries, etc. can bemeasured. Also, the tester can beused to check the presence of DC
voltage prior to MΩ measurement.
2) Measuring method① Insert the black measuring cord towhich the black alligator clip (orblack pin-type adapter) is attachedinto the EARTH (ground) measuringterminal, and the red measuringcord to which the red pin-typeadapter is attached into the LINE
measuring terminal.
－ 11 －

9.2 Measurement Range and Accuracy
7.1 Accuracy assurance: 23 5 ℃ 75 % RH max.
No condensation
7.1 Attitude: Horizontal ±5°. External magnetic field: Not present.
Battery voltage: Within the range in which the battery
power is effective.
Model
MΩ
Insulation
Resistance（

PDM1529S
Rated measuring Voltage） 1000 V
Maximum value

Rated measuring Voltage
Maximum value

Large numeral :1st effective measurement scale
Small numeral :2nd effective measurement scale

0.5

2 10002000 MΩ

500 V
100 MΩ

0.02

0.1 50100 MΩ

500 V
100 MΩ

0.02

0.1 50100 MΩ

250 V
100 MΩ

0.02

0.1 50100 MΩ

250 V
100 MΩ

0.02

0.1 50100 MΩ

125 V
100 MΩ

0.02

0.1 50100 MΩ

2000 MΩACV

0~600 V
0~60 V

DCV

Accuracy

PDM5219S

Large numeral :1st effective measurement scale
Small numeral :2nd effective measurement scaleMΩ range
1st effective measurement range :5 % of reading
2nd effective measurement range :10 % of reading
0, ∞ scale: 0.7 % of scale length
No load voltage: 25
0 % of rated measuring voltage
Rated current: 1~1.2 mA
Short circuit current : max 2.9 mA
ACV range (50/60 Hz sine wave) :5 % of full scale

DCV range

5 % of full scale:

OperatingWithin ±30 %(Maximum value tolerated by IEC standard)
instrumental Variation-causing factors [E1: Attitude. E2: Supply voltage.
uncertainty E3: Temperature]－ 15 －