[1] SAFETY PRECAUTIONS[4] DESCRIPTION OF FUNCTIONSBefore use, read the following safety precautions.
This instruction manual explains how to safely use your new KS3 motor rotation
tester & 3phase detector. Before use, please read this manual thoroughly. Afterreading it, keep it together with the product so you can refer to it when necessary.
If this product is not used as specified in this manual, its protection function may
be compromised.
To avoid accidental burns or electric shock, always follow any instructions with
“ WARNING” or “ CAUTION” headings.

4-1 Power switch
Switches the power on and off. After measurement, be sure to set this switch toOFF to prevent wasteful battery consumption.
Note: This instrument does not have the auto power-off
4-2 Open phase indicators
In the three-phase power line check, each indicator lights up when thecorresponding line is live. An extinguished indicator means that the phase ofthe line is open.
Note: Each LED indicator lights at an input of about 30 V or more. Theseindicators do not light during the motor rotation check because the input
voltages are less than 30 V.
4-3 Input jacks
Insert the measurement cords into the jacks of the same colors.
4-4 CW indicator (Clockwise = positive phase)Lights (in green) when the phase is positive.
4-5 CCW indicator (Counterclockwise = negative phase)Lights (in red) when the phase is negative.
4-6 Power ON indicator (Low battery warning)
Lights when the power is on.
It stops lighting when voltage of the built-in battery drops to 6.0 V or less. Replace
the battery with a new one as soon as possible if the indicator will not light.

1-1 Explanation of Warning Symbols
The meanings of the symbols used in this manual and on the products areexplained below.
: Very important instructions for safe use.
Warning messages are intended to prevent accidents to operating
personnel such as burn and electric shock.
Caution messages are intended to prevent damage to the instrument.
: Symbol requesting warning or reference to the instruction manual.
: Symbol requesting caution or risk of electric shock.
: Double insulation or reinforced insulation
CW: Stands for clockwise (positive phase).
CCW: Stands for counterclockwise (negative phase).

1-2 Warning Instructions for Safe Use

To avoid physical injury such as burns or electric shock, be sure to observe thefollowing instructions when using this instrument.
1. Pay special attention when measuring voltages of AC 33 Vrms (46.7 Vpeak) or DC 70 V or more to avoid injury.
2. Never use the instrument on lines that exceed 500 V to avoid the risk ofelectric shock.
3. Do not use the instrument if the main unit, measurement clip, ormeasurement cord is damaged or broken.
4. Do not use the instrument with the battery compartment cover removed.
5. Do not attempt to repair or modify the instrument except to replace the battery.
6. Be sure to check the instrument before each use and inspect it at least once a year.
7. To avoid compromising the protection function of this instrument, do notuse it in any way other than instructed in this manual.
Measurement category (overvoltage category)Equipment of CAT I:
Secondary cable runs from a power supply transformer connected to a wall socket.
Equipment of CAT II:
Primary cable runs of power-consuming equipments from a wall socket.
Equipment of CAT III:Primary cable runs of equipments directly connected to a distribution board andcable runs from a distribution board to wall sockets.
Equipment of CAT IV:
Cable runs from an incoming line to a distribution board.

[2] APPLICATION AND FEATURES
2-1 Application
This instrument is a motor rotation tester & 3phase detector that allows you todetermine the rotation direction of a three-phase motor by turning the motor
shaft manually, as well as to check the phase sequence (positive, negative)
and open phase condition of three-phase lines.
2-2 Features• Safety design that complies with IEC61010-1 CAT. III 500 V.
• Motor rotation direction testable before connection of the power supply.
• Phase sequence and open phase checking of three-phase lines.
• Bright LED indicators.
• Magnets on the back of the main unit allow it to be fixed on a distribution board
and other metallic objects.

WARNING

Motor

CCW
nagative-phaseindicator

Open phase indicators

Measurement Clip (CL-KS)

CW positive-phaseindicator

Barrier

Power On LED

Measurement cord (TL-KS)

Overall length approx. 0.7 m (CAT III 500 V)

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L2L3

(4) Turn the motor shaft at a speed higher than the specified rotation speed.
When the phase is positive (clockwise), the CW indicator lights green. Whenthe phase is negative (counterclockwise), the CCW indicator lights red.
* The specified rotation speed refers to 2 rotations or more per sec. This
figure is variable depending on the number of motor poles.
* If there is an open phase, turning the motor shaft in either direction lights
either or none of the CW and CCW indicators. Be sure to check by turning itin both directions.
* Certain motors may rotate in the opposite direction when they are connected in
the correct sequence. Please check the specifications document of your motor.

5-2 Checking the three-phase power lines[6] MAINTENANCE

CAUTION

1. The open phase indicators do not light if any of the line voltages is lessthan 30 V.
2. The CW or CCW indicator lights up even when there is an open phase,but the operation is not guaranteed. Be always sure to check the phasesequence while all of the open phase indicators are ON.
3. This instrument cannot be used with three single-phase lines.
(1) Insert the three measurement cords into the input jacks.
(2) Set the Power switch to ON.
(3) Connect the three measurement clips to R-S-T of the three-phase AC power
supply as shown below (correct measurement is impossible if only two ofthem are connected)/
Connect the red measurement clip to R, the white measurement clip to S andthe blue measurement clip to T.

L2

L3

Note: Illustrations of ON/OFF status of the indicators in this manual
LED ON indication

LED OFF indication(4) Check the open phase.
L1

Power switch

L15-1 Pre-operational Check
Perform pre-operational check for safety.
• Check the external appearance. Check that there is no abnormality with themain unit and measurement clips. Check that there is no abnormality with thecord such as disconnection or cracking.
• Check the lighting of the open phase indicators and the functioning of thephase detection by clipping cables with known voltages and phases.
If one or more indicator(s) do not light, the measurement cord(s) may bedisconnected or the built-in fuse may be blown.
Note: For the fuse replacement, please contact us (see section 7-2).
• If the Power ON indicator will not light, replace the battery with a new one.
• Make sure your hands and the measurement clips are not wet.

Input jacks

L3(1) Insert the three measurement cords into the input jacks.
(2) Set the Power switch to ON.
(3) Connect the three measurement clips to L1-L2-L3 of the motor as shown
below (correct measurement is impossible if only two of them are connected).
L1 L2 L3

[3] NAMES OF PARTS

L2CAUTION

1. Before measurement, make sure that no voltage is applied to the motor.
2. If an open phase is detected in the motor rotation direction check, turning
the motor shaft in either direction lights either or none of the CW andCCW indicators. Be sure to check by turning it in both directions.
3. Correct judgment is impossible if the turning speed is low. Be sure tocheck by turning the motor shaft at a certain speed (the specified rotation
speed cannot be reached if it is half stopped or turned at a low speed).

1. Do not perform measurement of a voltage exceeding the maximum rated voltage.
2. During measurement, do not hold the measurement clip at any point
beyond the barrier.

L1

L1

5-3 Checking the motor rotation direction[5] MEASUREMENT PROCEDURESWARNING

Main Unit(5) Check whether the phase is positive ornegative.
When the phase is positive (clockwise),
the CW indicator lights green. When thephase is negative (counterclockwise),
the CCW indicator lights red.
The example above shows the status
in which the phase of R, S and T is positive.

L2

L3

In the example above, the indicators of the R- and S-phases are ON and theindicator of the T-phase is OFF, which means that the phase of T is an open phase.
* The CW or CCW indicator lights up even when there is an open phase, but
the operation is not guaranteed. Be always sure to check the phasesequence while all of the open phase indicators are ON.
− 2 −WARNING• The section is very important for safety. Read and understand thefollowing instructions fully and maintain your instrument properly.
6-1 Maintenance and Inspection
Before use, check the instrument as specified (see section 5-1) to confirm that
there is no abnormality. If anything is abnormal, do not use the instrument andreturn it to your authorized Sanwa agent or distributor for repair.
6-2 Repair
For details, please contact your authorized Sanwa agent or distributor.
6-3 Storage

CAUTION

1. The panel and case are not resistant to volatile solvent and must not becleaned with thinner or alcohol.
2. The panel and case are not resistant to heat. Do not place the instrument
near heat-generating devices (such as a soldering iron).
3. Do not store the instrument anywhere it may be subject to vibrations or could fall.
4. When storing the instrument, avoid hot, cold or humid locations, locations
exposed to direct sunlight, or locations where condensation is anticipated.
5. When the instrument is not going to be used for an extended time, besure to remove the batteries.
6-4 Battery Replacement● The battery loaded at the factory is a monitor battery, so their service life may
be shorter than that of a brand-new battery. A monitor battery is a type ofbattery used to check the functions and performance of a product.
WARNING• To avoid electric shock when replacing the batteries, first disconnect themeasurement clips from the object to be measured, and turn off the power.
①Remove the fixing screw (x 1) from thebattery compartment cover.
②Slide the battery compartment coverdownward to remove it.
③Replace the battery with new ones.
④Place the battery compartment cover andtighten the fixing screw.
− 3 −[7] AFTER-SALE SERVICE
7-1 Warranty and Provision
Sanwa offers comprehensive warranty services to its end-users and to its
product resellers. Under Sanwa’s general warranty policy, each instrument iswarranted to be free from defects in workmanship or material under normal use
for the period of one (1) year from the date of purchase.
This warranty policy is valid within the country of purchase only, and applied
only to the product purchased from Sanwa authorized agent or distributor.
Sanwa reserves the right to inspect all warranty claims to determine the extent
to which the warranty policy shall apply.
This warranty shall not apply to the battery, measurement cable andmeasurement clips provided with the product, which have been subject to oneof 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 andother 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 when requesting
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 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 those information will be returned to the customer.
Note:1) Prior to requesting repair, please check the following:• Capacity and installation polarity of the built-in batteries.
• Continuity of the test leads.
2) Repair during the warranty period:		The failed instrument will be repaired in accordance with the conditions
stipulated in “7-1 Warranty and Provision”.
3) Repair after the warranty period has expired:		In some cases, repair and transportation cost may become higher than theprice of the product. Please contact Sanwa authorized agent / service
provider in advance. The minimum retention period of service functionalparts is 6 years after the discontinuation of manufacture. This retention
period is the repair warranty period. Please note, however, if such functionalparts 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 the productin a box that is larger than the product 5 times or more in volume and fillcushion materials fully and then clearly mark “Repair Product Enclosed” on
the box surface. The cost of sending and returning the product shall beborne by the customer.
7-3 SANWA Website
http://www.sanwa-meter.co.jp
E-mail: exp_sales@sanwa-meter.co.jp[8] SPECIFICATIONSOperating voltage range
Overload protection input
Fuse rating
Power frequency range
Motor rotation direction
Operation environment

Three-phase, line voltage 75 to 500 V AC (sine wave,continuous).
600 V
φ5 x 20 mm, 0.5 A/500 V Breaking capacity 50 kA
40 to 400 Hz.
Determined at rotation speeds from 2 Hz (2 rotations/sec.) to 400 Hz.
Altitude 2000 m or less, indoor use, environmental
pollution degree II.

Operating temperature/ humidity 0 to 40 °C, 80 % RH or less (without condensation).
rangesStorage temperature/ humidity-10 to 50 °C, 80 % RH or less (without condensation).
rangesPower supply
Alkaline 9 V battery 6LR61 (6LF22, 1604 A) ×1
Power consumption
Approx. 5 mA (standby state), approx. 10 mA (MAX)Power ON indicator stops lighting at approx. 6.0 V orLow battery indication
less.
Continuous operation duration
Approx. 60 hours
128 (H) x 72 (W) x 38 (D) mm, approx. 210 g
Dimensions and mass(including battery).
IEC61010-1, CAT. III 500 V, IEC61557-1,7,
Safety standards
IEC61010-2-030, IEC61010-031.
EMC directive, RoHS directive
IEC61326-1 (EMC). EN50581 (RoHS).
Measurement clips (CL-KS), measurement cords
Accessories(TL-KS), instruction manual, carrying pouch (C-KS2).

Specifications and external appearance of the product described above may
be revised or modified without prior notice.
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