[1] SAFETY PRECAUTIONS*Before use, read the following safety precautions.
This instruction manual explains how to use
your digital leakage clamp meter DLC460F.
Before use, please read this manual thoroughly
to ensure correct and safe use. After reading it,
keep it together with the product for reference
to it when necessary.
Using the product in a manner not specified inthis manual may cause damage to theprotection function of the product.
The instructions given under the headings ofWARNING andCAUTION must be
followed to prevent accidental burn andelectric shock.

1-1 Explanation of Warning Symbols

DIGITAL LEAKAGE CLAMP METER

INSTRUCTION MANUALSANWA ELECTRIC INSTRUMENT CO., LTD
DempabBldg, 4-4 Sotokanda 2-Chome Chiyoda-ku, Tokyo, JapanThe meanings of the symbols used in this manualand attached to the product are as follows:: Very important instructions for safe use.
The warning messages are intended toprevent accidents to operating personnel
such as burn and electric shock.
The caution messages are intended toprevent incorrect handling which may
damage the product.
: High voltage hazard: Ground: Alternating current (AC): Direct current (DC): Resistance: Buzzer: Backlight: Double insulation or reinforced insulation

1-2 Warning Messages for Safe Use

1-3 Overload Protection

3-2 Display

The maximum rated input value and overload
protection have been established for the input
terminals of each function.
Function

Input
TerminalMax. Rated
Input Value

Max. Overload
Protection

and

DC/AC
600V
Do not input
voltage

DC/AC
660 V

AC600 m A
AC400 A

AC100 A
AC450 A

DCV･ACV

ACmA
ACACT

Data Hold
Auto Power Save LPF mode
mode
MAX MIN Hold
DCmeasurement
ACmeasurement

Units

Minus polarity[2] APPLICATIONS AND FEATURES

Digit anddecimal point
Low battery indication

3-3 Test Lead

2-1 Applications
This is a digital leakage clampmeter designed formeasurement in the ranges of CAT. III 600V. This
meter is useful for measuring leakage or load
current on power lines and equipment instrument.

Removal test pins cover
Test pins

Test probe(red)2-2 Features
Safety design in compliance with the IEC61010-1.
Leakage current measurement Resolution 0.01mA
Low Pass Filter function
MAX-MIN Hold Function
Backlight Function
Data Hold, Auto Power Save Functions
Classification of overvoltage measurement
Overvoltage measurement classification(CAT. I): Line on the secondary side on theinside of equipment via a transformer, etc. fromthe receptacle.

Finger guards

Plugs

Test probe(black)

In case of test pins cover attached: CAT.III 600V
In case of test pins cover removed: CAT.II 1000V

Remarks:
Function changes or functional operations willcancel the function.

4-5 BACKLIGHT function
When the backlight button is pressed, thebacklight will be turned on. To disable thefunction, the button is pressed again. The
backlight will be automatically turned off about
30 seconds after it was turned on.

4-6 AUTO POWER SAVE function
The meter will go to AUTO POWER SAVE
function to save battery life about 30 minutes
after last function switch or button operation. To
wake up the meter, press any button. To disable
the function, press any button.
Remarks:
Even in the AUTO POWER SAVE mode, thetiny power is still consumed. When the meter is
not going to be used for an extended period oftime, be sure to turn off the power switch.
To disable the function, turn the function switch
to position other than OFF while holding theHOLD button.
on the display is turned off
when Auto Power Save function is disabled.

5-2 Current Measurement (mA)

Remove the test leads from the measuringterminals to avoid electric shock.

Remarks:· Clamp the conductor (cable) to measure at thecenter of the trans core (CT).
· To measure zero-phase current, clamp only
earth wire or all of wires like 2-core or 3-corewire together.
· The meter may malfunction in places where astrong magnetic field is present.
· Do not apply voltage and current at the sametime.

ACmA current measurement
Load current
clamp one wire

4-7 Low Battery indication
When the built-in batteries have beendischarged and the voltage has dropped to
below about 2.2V,
appears in the display.
When the mark flickers or lights, replace both
two batteries with new ones.

01-1204 5001 6011
- MEMO The following instructions are intended to prevent
personal injury such as burn and electric shock.
Be sure to follow them when using the meter.
1. Never use the meter for the power lines
exceeding 600VAC to ground.
2. Voltages over 70VDC or 33Vrms AC (46.7Vpeak) are hazardous to human body. Takecare so as not to touch them.
3. Never input signals exceeding the maximum
rated input value (see 1-3).
4. Never use the meter near equipment which
generates strong electromagnetic waves or ischarged.
5. Never use the meter if the meter or test leads
are damaged or broken.
6. Never use the meter with the case or battery
lid removed.
7. During measurement, keep your fingers
behind the finger guard of test leads and themeter of the test leads.
8. To start measurement, do not change themeter to another function or range nor replace
the plugs to other terminals.
9. During measurement, do not change function
switch of the meter nor replace the plugs toother terminals.
10. Before starting measurement, make sure thatthe function and range are properly set.
11. Never use the meter when it is wet or with wethands.
12. Be sure to use the specified type of test leads.
13. Never attempt repair or modification, except
for battery replacement.
14. Always conduct start-up inspection and checkthe meter at least once a year.
15. This meter is for indoor use only.
-1-

Overvoltage measurement classification (CAT.
II): Line on the primary side of equipment withpower cord to be connected to the receptacle.
Overvoltage measurement classification(CAT. III): Line from the primary side or branchof equipment which directly takes in electricity
from a distribution board to the receptacle.
Overvoltage measurement classification(CAT. IV): Line from the service conductor tothe distribution board.

[3] NAMES OF COMPONENT UNITS
3-1 Main unit

[4] DESCRIPTION OF FUNCTION
4-1 Power Switch and function switch
Turn this switch to turn on and off the powerand select a measuring function.

4-2 Date Hold function
When the HOLD button is pressed, the reading
indicated will be held withon the display.
The indicated reading will not change if theinput signal is changed. When this button ispressed again, the function will be disabled andthe meter will return to the measurement mode
without
on the display.

4-3 LPF function (mA/ACA)

Clamp Current
Transformer (CT)When the LPF button is pressed,turns
on the display. This function cuts current valueof high frequency. When this button is pressedagain, the function will be disabled and themeter will return to the normal measurementmode without
on the display.

Finger gurad
Trigger

Remarks:
Cut-off frequency: -3 dB at 180 Hz

Power and functionswitch[5] MEASURING PROCEDURE
1. Do not apply an input signal exceeding themaximum rated input of each function.
2. During measurement, do not change thefunction switch.
3. During measurement, keep your finger behindfinger guard of the test lead and the meter.
4. When measurement has been finished, remove
the test leads and CT from the object measured
and turn the function switch to OFF position.

ACmA current measurement
Zero-phase current
clamp all of wires

5-1 Start-up Inspection
Always conduct the start-up inspection to ensure
safety.
1. Be sure that when the meter is turned on, thelow battery indication
is not flickering or lit.
If it is flickering or lit, replace the battery with a
new ones.
2. Do not use the meter if the meter or test lead isdamaged or broken.
3. Make sure the test leads are not cut.
4. Make sure the meter and your hand are notwet.

ACmA current measurement
Zero-phase current
clamp earth wire

4-4 MAX/MIN function

Hold button

When the MAX/MIN button is pressed, themeter enter MAX/MIN mode, fix a measuring
range and turnon. Press the button,
to read MAX, MIN, current reading sequence.
Press the button for 1 sec. or more to exit theMAX/MIN mode.

LPF button
MAX MIN button
Backlight button

Display
Input terminal (-)
Input terminal(+)-2--3--4--5-5-3 Current Measurement (ACA)

5-5 Resistance Measurement, Continuity
Check

6-3 Storage

Remove the test leads from the measuringterminals to avoid electric shock.

Never apply a voltage to the input terminals.

1. The panel and case are not resistant tovolatile solvent and must not be cleaned withthinner or alcohol.
2. The panel and case are not resistant to heat.
Do not place the meter near heat-generating
devices.
3. Do not store the meter in a place where it
may be subjected to vibration or from where it
may fall.
4. Do not store the meter in places under direct
sunlight, or hot, cold or humid places orplaces where condensation is anticipated.
5. If the meter will not be used for a long time,
remove the batteries.

AC current measurement

Resistance measurement
Continuity checkbelow 30 ohm
Resistor

Continuity

6-4 Battery Replacement

Remarks:· Clamp the conductor (cable) to measure at thecenter of the trans core (CT).
· Clamp only one cable. If several cables areclamped together or 2-core or 3-core cords orcables are clamped, current cannot bemeasured accurately.
· The meter may malfunction in places where astrong magnetic field is present.

Remarks· Reading is 30 ohm or below, buzzer sounds.
· Open voltage’ approx. 0.9V

5-4 Voltage Measurement (ACV DCV)

[6] MAINTENANCE

Never use the meter in power lines exceeding
600 V to ground.

AC voltage
measurement

DC voltage
measurement

Batteries when the meter is shipped:
A battery for monitoring has been installed prior toshipment from the factory. It may be discharged
before the expiration of the described battery life.
*The battery for monitoring is a battery used tocheck the functions and performance of theproduct.
To avoid electric shock, do not remove the battery
door with an input being applied to the measuringterminals. Also, before starting replacement, makesure the power of the meter is OFF.

1. Remove the fixing screw of the battery lid witha minus screwdriver.
2. Replace both two batteries in the battery

1.The following instructions are very important forsafety. Read this manual thoroughly to ensure
correct maintenance.
2.Calibrate and inspect the meter at least once a
year to ensure safety and maintain its accuracy.

holder with new ones. (Pay attention to theirpolarity.)
3. Set and secure the battery door with the fixing
screw as before.

6-1 Maintenance and Inspection
1) Appearance: Is the meter not damaged due tofalling or other cause?
2) Test leads:
Are the core wires not exposed from thetest leads?
Is the plug when inserted to the input
terminal not loose?
If any of the above problems exists, stop using
the meter and request for repair.

6-2 Calibration and Inspection
For more information, please contact Sanwa sauthorized agent / distributor service provider,listed in our website. See section 7-3.

[7] AFTER-SALE SERVICE
7-1 Warranty and Provision
Sanwa offers comprehensive warranty services toits end-users and to its product resellers. Under
Sanwa's general warranty policy, each instrument
is warranted to be free from defects inworkmanship or material under normal use for theperiod of one (1) year from the date of purchase.
This warranty policy is valid within the country ofpurchase only, and applied only to the productpurchased from Sanwa authorized agent ordistributor.
Sanwa reserves the right to inspect all warranty
claims to determine the extent to which thewarranty policy shall apply. This warranty shall not
apply to disposables batteries, or any product orparts, which have been subject to one of thefollowing causes:-6--7--8-

1.
A failure due to improper handling or usethat deviates from the instruction manual.
2. A failure due to inadequate repair ormodification by people other than Sanwa
service personnel.
3. A failure due to causes not attributable to thisproduct 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 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 above information will be returned to thecustomer.
Note:1) Prior to requesting repair, please check thefollowing: Capacity of the built-in battery,polarity of installation and discontinuity of thetest leads.
2) Repair during the warranty period: The failed
meter will be repaired in accordance with theconditions stipulated in 7-1 Warranty andProvision.
3) Repair after the warranty period has expired: Insome cases, repair and transportation cost
may become higher than the price of theproduct. Please contact Sanwa authorized
agent / distributor / service provider in advance.
The minimum retention period of service
functional parts is 6 years after the
discontinuation of manufacture. This retention
period is the repair warranty period. Please
note, however, if such functional parts become
unavailable for reasons of discontinuation ofmanufacture, etc., the retention period may
become shorter accordingly.
4) Precautions when sending the product to berepaired.
To ensure the safety of the product duringtransportation, place the product in a box thatis larger than the product 5 times or more involume and fill cushion materials fully and thenclearly mark Repair Product Enclosed on
the box surface. The cost of sending andreturning the product shall be borne by thecustomer.

[8] SPECIFICATIONS
8-1 General Specifications
Operation method:
AC measuringmethodDisplay:

Double integration
Average sensing

6000count for A/V
9999counts for Resistanceand Continuty check
Approx. 2 times/sec.
Sampling rate:“OL” indication
Over-range:
AutoRange selection:
Auto ( - indication)
Polarity switching:lights when buit-in battery
Low Battery
voltage is below 2.2 V orindication:
below.
40mm,Max. clamp
conductor diameter: 35mm(open CT size)
Altitude up to 2000
Environmental
meters, indoor use
condition:
pollution degree 2
5 to 40 in the humidity
Operatingrange as follows.
temperature:
No condensation allowed.
80%RH(max.) at 5 to 31 ,linearly dropping from 80%RH
to 50%RH at 31 to 40 .
Storage temperature: -10 to 50 , 80%RH max.,
no condensation.
LR03 x 2 pcs.
Power supply:Power save in about 30
Auto Power Save:mins. after last operation.
Power consumption: Approx. 33 mW TYP
Approx 90 hours
Battery life:
H206 x W83 x D38 mm
Dimension:
Approx. 320 g (batteries
Weight:included)
IEC61010-1 CAT.III 600V,
Safety standards:
IEC61010-2-032, IEC61010031
EMC Directive:
Standard
Accessories:

Remarks:
Accuracy is specified at center of CT.
LPF: Approx. -3dB@180Hz
Accuracy assurance frequency at LPF function:
50/60 HzAC voltage
Function

Range

ACV

600.0 V

Remarks:
Input impedance: Approx 1M ohm.
Bandwidth: 40 Hz ~ 400 Hz (sine wave)
DC voltage
Function

Range

DCV

600.0 V

Resistance and Continuity check
Function

Range

Remarks:
Open voltage: Approx 0.9 V
Buzzer sounds : Less than 30 ohms

AC mA current
Accuracy

60.00 mA

50 Hz / 60 Hz(1.2 %rdg + 5 dgt)
40 Hz - 400 Hz(2.5 %rdg + 10 dgt)

mA
600.0 mA

Remarks:
Accuracy is specified at center of CT.
LPF: Approx. -3 dB@180 Hz
Accuracy assurance frequency at LPF function:
50/60 HzAC current
Function

7-3 SANWA web site
http://www.sanwa-meter.co.jp
E-mail: exp_sales@sanwa-meter.co.jp

Range

Accuracy
0 A - 200 A
50 Hz / 60 Hz(1.2 %rdg + 5 dgt)
60.00 A
40 Hz - 400 Hz(2.5 %rdg + 10 dgt)

ACA
400.0 A

-9-200A - 400A
50 Hz / 60 Hz(2.0 %rdg + 5 dgt)
40 Hz - 400 Hz(5 %rdg + 10 dgt)

- 10 -Accuracy(1.0 %rdg + 8 dgt)

999.9IEC61326
Instruction manual
Test leads (TL-23a)

RangeAccuracy(1.0 %rdg + 2 dgt)

Remarks:
Input impedance: Approx 1M ohm.

8-2 Measuring Range and Accuracy
Temperature: 23 5 , humidity: 80%RH max.(nocondensation), supply voltage 2.2 V or above.
rdg(reading): Read value. dgt(digit): Number ofcounts of last digit.

Function

Accuracy(1.2 %rdg + 5 dgt)

- 11 -