8. Never use the instrument when it is wet or with wet hands.
9. Never attempt repair or modification, except for battery
replacement.
10. Perform start-up inspection and inspect the instrument at least
once a year.
11. This instrument is for indoor use only.
12. Do not use the instrument in a method other than specified.
Otherwise, the protection function may be spoiled.

[3] NAME OF COMPONENT UNITS

4-5 Backlight and LED light

The LCD green backlight and the LED light light when the instrument
is turned ON. The backlight color changes to orange when the input
is AC or DC and 20 V or more, or when the AC live wire is detected in
the EF mode.
* The light cannot be turned OFF except by turning the instrument OFF.

3-1 Main unit and test leads
Front

Back
EF detection antenna

LED light

Backlit LCD
Lead hook
VOLT TESTER

Detachable
probe

CAUTION
1. Accurate measurement may be impossible near a source ofstrong magnetic field such as a transformer or large-current
line, near a source of electromagnetic wave such as a wirelessdevice or near a charged object.
2. This instrument may malfunction or the measurement result
may become abnormal if this instrument is used with a special
waveform such as that of an inverter circuit.

KP1

Auto-identifying
voltage measurement

Buzzer LED

Lead reelMax. rated input

Max. overload
protection input

Strap hole

AC/ DC 1000 V

1050 V rms,
1450 V peakTL-36: Test lead (black), approx. 1.5 m

TL-A01: Test probe (black)
Test pins
Φ4 plugBarrier

Barrier

Electric field detection

Φ4 plug

Test pins

2-1 Applications

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

01-1410 2040 6010

[1] SAFETY PRECAUTIONSBefore use, read the following safety precautions.
Thank you for purchasing our voltage tester equipped with the electricfield detection facility model KP1.
Before use, please read this manual thoroughly to ensure correctand safe use. After reading it, keep it together with the product forreference to it when necessary.
Using the product in a manner not specified in this manual may cause
damage to the protection function of the product.
The instructions given under the headings of “ WARNING” and“ CAUTION” must be followed to prevent accidental burn andelectric shock.

1-1 Explanation of warning symbols
The meanings of the symbols used in this manual and attached to the
product are as follows:: Very important instructions for safe use.
• The warning messages are intended to prevent accidents tooperating personnel such as burn and electric shock.
• The caution messages are intended to prevent incorrect
handling which may damage the product.
: Refer to Instruction Manual before use: Double or reinforced insulation: Ground: Circuit continuity buzzer		
: Backlight

1-2 Warning instructions for safe use

This instrument is a voltage tester of the RMS value response typeequipped with the electric field detection facility. It is designed formeasurements in the ranges specified by IEC 61010-1 CAT. IV 600 V
and CAT. III 1000 V.
Recent multiinstruments have been increasing the facilities andbecoming capable of measuring a larger variety of items in simpler
ways. Nevertheless, this trend also means that the risk of operation
mistake is increasing because of the presence of facilities that are notrequired by all of the users.
This instrument has been designed to meet the actual needs of the fields
of electrical equipment maintenance by prioritizing the usage without
operation mistakes, reducing the size for higher portability and limiting
the facilities to voltage measurement and electric field detection while
complying with safety standards. It is suitable for voltage measurement
and electric field detection of low-voltage lines and equipment.

TL-35: Test probe (red)DC Voltage

Barrier

Data Hold
Low battery
indication

Live wire alarm

When the probe is separated from the measurement target during
auto-identifying voltage measurement or when the input drops below
about 5 V, the instrument automatically holds the last measurement
value displayed on the LCD. During auto hold,appears on the
LCD and the displayed value flashes.
* A numeric value other than the measured value may appear momentarily
before the held value is displayed, but this is not malfunction.

4-9 EF (Electric Field) detection: EF button

3-2 Display
AC Voltage

4-8 Auto holdThis EF detection identifies the presence of voltage in a simple
manner by detecting an electric field generated by an AC voltage.
For details, see 5-4 EF (Electric Field) detection.

Φ4 plug[2] APPLICATIONS AND FEATURESINSTRUCTION MANUAL

4-10 AC detection method

This instrument employs the RMS (Root-Mean-Square) method andindicates the magnitude of AC current as the same amount of work as
DC. RMS values of sinusoidal waves and such non-sinusoidal waves
as square and chopping waves can be measured by the true RMS
circuit. (The input signal measurement value is used as the scale of theactual input signal power so it is therefore measured as a more
effective value than the value obtained by average detection.)

4-11 CF (Crest Factor)

Minus sign

Numeric value
and decimal
point

The CF (Crest Factor) indicates the peak value of a signal divided by
its RMS value. With most common waveforms such as sinusoidal andchopping waves, the CF is relatively low.
With waveforms similar to pulse trains with low duty cycle, the CF is high.
For the voltages and CFs of typical waveforms, see the table below.
The CR of measurements should be 2 or less.

[4] DESCRIPTION OF FUNCTIONS

2-2 Features• Safe use with low-voltage equipment – IEC61010 CAT. IV 600 V
and CAT. III 1000 V compatibility.
• Single-button system – Easy operation for preventing operation
mistakes.
• Auto identification of AC or DC voltage – AC measurement in true
RMS value.
• Easy identification of 24 V type FA control panel voltage – Thebacklight color changes at 20 V or more.
• Auto hold – The result of the last measurement is held
automatically.
• Self-test – Checking failures of the LCD or disconnection of alead wire.
• AC electric field detection – Both contact and noncontact
methods are available.
• Designed to fit the chest pocket of the working uniform.
• LED light for illuminating the working site.

Measurement Category (Overvoltage Category)­ easurement Category II (CAT. II):
MLine on the primary side of equipment with power cord to beconnected to the receptacle.
Measurement Category III (CAT. III):Line from the primary side or branch of equipment which directly
takes in electricity from a distribution board to the receptacle.
Measurement Category IV (CAT. IV):Line from the service conductor to the distribution board.

WARNING
The following instructions are intended to prevent injury such as burnand electric shock. Be sure to follow them when using the instrument:

Input Waveform

4-1 Changing the measuring probe angle
The angle of themeasuring probe canbe changed byremoving it from themain body, positioning
it in the desired angle
and inserting it straight
into the main body.
Be sure to insert themeasuring probe all
the way until it is fixed.

4-2 Power/Select button

The function of the Power/Select button varies depending on the period
it is pressed. In this manual, we use the term “push” for the action ofpressing the button temporarily and the term “hold” for the action ofpressing and holding the button for more than one second.
Hold this button to turn the instrument ON/OFF. Note that the instrument
cannot be turned OFF while it is accepting an input.
Push the button while the instrument is ON to switch the measurement
modes.
The instrument is in the self-test mode (displayed) when it isturned ON. Thereafter, each press of this button switches the modesin the following cycle. (For the description of each mode, see [5]MEASUREMENT PROCEDURE.)
displayed) ⇒Auto-identifying voltage measurement mode (EF mode (displayed) ⇒ Auto-identifying voltage measurementmode ⇒ … (repeat)

1. This instrument is a voltage tester equipped with the electricfield detection facility. Do not use it with an electric circuit
exceeding 1000 V.
2. Voltages over DC 70 V or AC 33 V rms (46.7 V peak) arehazardous to human body. Take care so as not to touch them.
3. Never input signals exceeding the maximum rated input value(see 1-3).
4. Never use the instrument for measuring a line connected toequipment that may generate induced or surge voltage (suchas a motor) because an input exceeding the maximum
allowable overload input may be applied.
5. Never use the instrument if the instrument or test leads aredamaged or broken.
6. Never use the instrument with the case or battery lid removed.
7. During measurement, do not hold the instrument by a positionon the test pin side of the barrier on the test probe.
− 1 −When an input of 5 V or more is applied in the self-test or auto-identifying
voltage measurement mode, the instrument automatically identifies
whether the input is an AC or DC voltage and displays the measured value.

Power/Select button

Self-test

VOLT TESTERThis manual emplys soy ink.

DisplayThis self-test checks disconnection of the test lead wires, lack ofdisplay segments and failure of the buzzer and buzzer LED light.
For details, see 5-2 Self-test mode.

4-7 AC/DC auto-identifying voltage measurement

Probe holder

1-3 Overload protection
Mode

Lead holder

Magnet

Test probe

4-6 Self-test

Sinusoidal Vp
0
wave
Square
wave

p p

2π

Vp
0

2π

π

Chopping Vp
0
wave

Pulse

π

π

2π

Vp
0

τ

2π

Vp

Vp

Vp

1

1

Vp

Vp
Vp
－
－
√3
2
3
√
=0.577 Vp =0.5 Vp =1.732

2－√3=1.155Vp

ττ－・Vp －・Vp
2π
2π

2π
－
τ

2π
－
τ

4-12 Storage of lead
Lead hook

Lead holder

Lead holder: After winding the leadaround the lead reel for storage,
tuck the remaining section of thelead in this space to prevent
spontaneous unwinding.
Lead hook: Hook the lead on theseparts when the lead is usedwithout unwinding fully.
Strap hole: Use this hole when attachinga strap or like to the instrument.

Strap hole[5] MEASURING PROCEDUREWARNING

4-4 Low battery alarm

− 2 −

Vp

π
2 Vp
Vp
－
－ －
2
√
π
2
√2
2
√
=0.707 Vp =0.637 Vp =1.414 =1.111

Voltages of Various Waveforms

4-3 Auto power OFF

When the instrument is left without input for about one minute since thelast operation, Auto power OFF turns automatically the display and thepower of the instrument OFF. To recover from the auto power OFF, holdthe Power/Select button for more than one second.

Form
Mean Average Crest
0 to PEAK Root
Factor Factor
Square Value Value
Vp
Vavg Vp/Vrms Vrms/Vavg
Vrms

When the built-in batteries have been discharged and the battery voltage
has dropped to below about 2.5 V,
mark appears on the display.
When this mark appears, replace both of the two batteries with new ones.
If the battery voltage drops below about 2.2 V,
appears on the
LCD and the instrument becomes unable to continue measurement.

1. Do not apply an input signal exceeding the maximum rated input value.
2. During measurement, do not hold the instrument by a position on thetest pin side of the barrier on the test probe.
3. Use test leads matching the measurement category of the measured
point.

− 3 −

− 4 −

5-1 Start-up inspection

Be sure to perform the start-up inspection before proceeding tomeasurement.
• Exterior check: Check the external view for irregularity caused bydropping, etc.
indicator is not lit. If it is lit, replace the batteries• Check that thewith new ones.
• Accessories: Check that the test leads are free of irregularity suchas wire disconnection or crack.
• Make sure that the main unit and hand are not wet with water, etc.
* If the display shows nothing, the batteries may be exhausted completely.

5-2 Self-test mode
① The LCD shows
when the instrument isturned ON.
② Short-circuit the test pins.
③ All of the numeric value segments and marks
are displayed on the LCD and the backlightchanges color between green and orange
alternately. Confirm that the buzzer beeps andthat the buzzer LED lights up.
* The instrument does not enter the self-test mode
if the wire of a test lead is disconnected.
④ When the test pins are disconnected, theinstrument enters the auto-detecting voltage
measurement mode, in which the LCD displays.
Backlight: Alternates between green and orange

Backlight: Green

Backlight: Green

5-4 EF (Electric Field) detection

6-4 Battery replacement

WARNING

1. Before proceeding to the EF detection, check the proper
operation of this instrument using a known power source.
2. During EF detection, do not hold the instrument by a positionon the test pin side of the barrier on the probe.
3. Do not touch the power line because it is not always voltagefree but there may be a voltage below the detectable voltage.
① EF detection identifies the presence of AC voltage in a simplified
manner, by detecting the electric field generated by it.
The standard detection level is from about 60 to 1000 V AC. Whenan electric field is detected, the LCD backlight changes color fromgreen to orange, and the number of bars, the intervals of buzzer
beeps and the flashing interval of the buzzer LED vary in five steps.
in the② Push the Power/Select button so that the LCD showsmain numerical value display area.
③ Check method• Noncontact type measurement: Position the antenna as shown in
the illustration (on the right side of the light when the instrument isviewed from the front).
• Contact type measurement: Bring the test pin (either the black or
red one) in contact with the target. More accurate EF detection ispossible so that the buzzer does not beep and the display
in the grounding phase.
remainsmay* In certain cases in which the wiring is long, for example,
sometimes become “-” even on the grounding side.
* Due to the high sensitivity, the EF sensing may be activated nearan inverter generating high frequencies, even when it is as apart as
more than some tens of centimeters from the instrument.

Disconnect test
Short-circuit
pins for voltage
test pins
measurement
Buzzer beep generated, buzzer LED lit

Range
5.0 ~ 999.9 V
5.0 ~ 999.9 V
Threshold 20 k ~ 500 kΩ or lesswhen there is no input.

② When a voltage of 5 V or more is input, the instrument automaticallydetects whether it is an AC voltage (ACV) or DC voltage (DCV) anddisplays the corresponding mark together with the measurement
value.
When a voltage of 20 V or more is input,
appears on the LCD
and the backlight color changes from green to orange.
③ When the probe is removed from the measurement target or
the input drops below about 5 V, the last measurement value is
automatically held displayed on the LCD (data hold). In the datahold status, themark appears and the held numerical value
flashes.
* The data hold status continues until the next time a voltage is input
or auto power OFF is activated.
Backlight: Orange

Backlight: GreenDC
voltage input

Backlight: GreenNo input
Automatic data holdof voltage value
Backlight: Green

Voltage value display

Backlight
Green: Input voltage < 20 V
Orange: Input voltage ≥ 20 V

Backlight: Orange
No inputAC
voltage input
Voltage value display

Buzzer generated, buzzer LED lit* When there is an input voltage between
remains
about 1.5 to 4.9 V,
displayed and the instrument does notwork even when the resistance is below
the threshold.
* Due to the high threshold value, theresistance may be as high as max. 500 kΩeven when the buzzer beep is generated.

− 5 −Backlight: Green

Backlight: Orange

Backlight: Orange

Undetected status

Detected status(Contact type)

Detected status(Noncontact type)[6] MAINTENANCE AND INSPECTIONWARNING
1. The following instructions are very important for safety.
Read this manual thoroughly to ensure correct maintenance.
2. Calibrate and inspect the instrument at least once a year toensure safety and maintain its accuracy.

6-1 Maintenance and inspection

1) Appearance: Is the instrument not damaged due to falling orother cause?
2) Test leads:• Is a plug loose when it is inserted into the measured terminal?
• Is the cord of a test lead damaged?
• Is white coating exposed from the coating of a test lead?
If any of the above problems exists, stop using the instrument andcontact us for repair or part replacement.

6-2 Calibration and inspection
Automatic data hold of
voltage value④ When the voltage input is below about 1.5 V and the resistanceis below the threshold value, the continuity buzzer beeps and thebuzzer LED lights up. All of the numeric value segments and marks
are displayed on the LCD and the backlight changes color between
green and orange alternately.
Backlight: Alternately green and orange

screw① Unwind the test lead (black) fromthe lead reel so that the screws are
exposed.
Usinga Phillips screwdriver, remove②
the two battery cover retaining
screws.
③ Replace both of the two batteries inthe battery holder with new ones bytaking care of the polarity.
④ Attach the battery cover and retaining
screws in the original positions.
* The battery cover incorporates amagnet so care is required when
closing it.

[7] AFTER-SALE SERVICE
Sanwa offers comprehensive warranty services to its end-users and to its
product resellers. Under Sanwa's general warranty policy, each instrument
is warranted to be free from defects in workmanship or material undernormal use for the period of one (1) year from the date of purchase.
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 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.

5-3 Auto-detecting voltage measurement① The LCD displays

WARNING
1. To avoid electric shock, do not remove the battery cover while
an input is applied to the measured terminal or during
measurement.
2. Make sure that the instrument is set to OFF before replacing thebatteries.

7-1 Warranty and provision* When a voltage of 5 V or more is input while
appears on the
LCD, the instrument enters the auto-detecting voltage measurementmode and displays the value of the input voltage.

Function (Auto detection)
DCV
ACV (45 ~ 400 Hz)
Circuit continuity

Batteries when the instrument is shipped:
A battery for monitoring has been installed prior to shipmentfrom the factory. It may be discharged before the expiration of
the described battery life.
*The battery for monitoring is a battery used to check thefunctions and performance of the product.

For more information, please contact Sanwa’s authorized agent /distribute service provider, listed in our website.
See section 7-2-4.

6-3 Cleaning and storage
CAUTION
1. The panel and case are not resistant to volatile solvent andmust not be cleaned with thinner or alcohol.
If the instrument gets dirty, wipe with a soft cloth moistenedwith a small amount of water.
2. The panel and case are not resistant to heat. Do not place theinstrument near heat-generating devices.
3. Do not store the instrument in a place where it may besubjected to vibration or where it may fall.
4. Do not store the instrument in places under direct sunlight, or
hot, cold or humid places or places where condensation is
anticipated.
5. If the instrument will not be used for a long time, remove thebatteries.

− 6 −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.

7-2 Repair

Customers are asked to provide the following information whenrequesting services:
1. Customer name, address, and contact information
2. Description of the problem
3. Description of the product configuration
4. Model Number
5. Product Serial Number
6. Proof of Date-of-Purchase
7. Where you purchased the productPlease contact Sanwa authorized agent / distributor / service
provider, listed in our website, in your country with above information.
An instrument sent to Sanwa / agent / distributor without above
information will be returned to the customer.
Note:1) Prior to requesting repair, please check the following:
Capacity of the built-in battery, polarity of installation anddiscontinuity of the test leads.
2) Repair during the warranty period:
The failed instrument will be repaired in accordance with theconditions stipulated in 7-1 Warranty and provision.
3) Repair after the warranty period has expired:• If it is expected that servicing can restore the original functioning of the
product, we will service it for a price upon request of the user.
• The service charge or transport freight could sometimes become higher
than the product price. Please consult us before asking for servicing.
• The minimum retention period of the servicing performance parts of thisproduct is six (6) years after the discontinuation of production. This
period is equal to the servicing available period. However, the retention
period of a part may be reduced if it becomes unavailable due todiscontinuation of production of the part manufacturer, etc.
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] SPECIFICATIONS
8-1 General Specifications
Operation method

Δ-Σ method

AC detection method

True RMS

Display

Numerical value: Max. 9999 counts. With backlight(green/orange)

Sampling rate

ACV: Approx. 6 times/sec. DCV: Approx. 5 times/sec.

Over-range display"OL" is displayed

Polarity switching

Auto (Only “-” is displayed.)The
indicator lights on the display when the
supply voltage from the batteries drops below about
2.5 V.
Low battery indication
If the battery voltage drops below about 2.2 V,
appears on the LCD and the instrument becomesunable to continue measurement.
Operating environmental Altitude no more than 2000 m, indoor use,environmental pollution degree II
conditions
Operating temperature/humidity ranges

Temperature: 5 to 40 °C
Humidity is as follows (without condensation).
5 to 31 °C: Max. 80 %RH
31 to 40 °C: Linearly decreases from 80 %RH to 50 %RH.

Temperature -10 to +40 °C: No more than 80 %RH,
without condensation
Storage temperature/ Temperature +40 to +50 °C: No more than 70 %RH,
without condensation
humidity ranges(Remove the batteries when the instrument is not to be
used for long time.)
Temperature
coefficient

At below 18 °C or above 28 °C, multiply accuracy by
x0.15 per 1 °C.

Power supply

LR03 (“AAA”-size alkaline battery), 1.5 V x 2

Auto power off

The instrument power is turned OFF in about 1 min.
after the last operation. Standby current: Approx. 5 µA

Current consumption

Approx. 20 mA (standby)

Battery life

Approx. 20 hours (continuous measurement of 40 V DC)

Dimensions/mass

130(H)×90(W)×30(D) mm /approx. 205 g (including batteries)

Safety standards

IEC61010-1, IEC61010-2-030 CAT. IV 600 V / CAT. Ⅲ
1000 V, IEC61010-2-33, IEC61010-31

EMC directive

IEC61326-1

Accessories

Instruction manual, test leads (TL-35: Test probe (red),
TL-36: Test lead (black); approx, 1.5 m, TL-A01: Testprobe (black))

8-2 Measuring ranges and accuracies

Accuracy-guaranteed temperature/humidity ranges:
23 ±5 °C, no more than 80 %RH, (without condensation).
should not be displayed.

Crest factor (CF): < 2rdg: Reading

dgt: Lowest digit

ACV (AC voltage)

Measurement range: 5.0 ~ 999.9 V. Accuracy: ±(1.7 %rdg + 5dgt).
Note: Input impedance approx. 1.7 MΩ at 160 nF, frequency range
45 ~ 400 Hz

DCV (DC voltage)

Measurement range: 5.0 ~ 999.9 V. Accuracy: ±(0.7 %rdg + 5dgt).
Note: Input impedance approx. 1.7 MΩ at 160 nF

Circuit continuity

Open voltage: Approx. 0.6 V DC. Buzzer threshold: 20 ~ 500 kΩ

EF (Electric Field) detection

A voltage or electric field of about 60 V or more is detected.
The bar graph and intermittent buzzer beeps change in five steps
according to the field intensity.
Detection frequency: 50/60 Hz
Detection antenna: Top of the instrument body(on the right of the LED light)
Contact type EF detection: + terminal test pins

Accuracy calculation method

Example: ACV (AC voltage) measurement
Displayed value: 100.0 V
Range and accuracy: 999.9 V range, ±(1.7 %rdg + 5dgt)
Error: ±(100.0 V x 1.7 % + 5dgt) = ±2.2 V
True value: 100.0 V ±2.2 V (97.8 to 102.2 V)* In the 999.9 V range, the 5 digit corresponds to 0.5 V.

The product specifications described in this manual and its
appearance are subject to change without notice for
improvement or other reasons.

7-3 SANWA web site

http://www.sanwa-instrument.co.jp
E-mail: exp_sales@sanwa-instrument.co.jp
− 7 −

− 8 −