safety precautions
[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 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 and
electric shock.
1-1 Explanation of Warning Symbols
DIGITAL LEAKAGE CLAMP METER
INSTRUCTION MANUAL
SANWA ELECTRIC INSTRUMENT CO., LTD
DempabBldg, 4-4 Sotokanda 2-Chome Chiyoda-ku, Tokyo, Japan
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 to operating personnel
such as burn and electric shock.
The caution messages are intended to
prevent 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.
Input
Terminal
Function
DCV・ACV
Max. Rated
Input Value
DC/AC
600V
Do not input
voltage
and
ACmA
ACA
CT
AC600 m A
AC400 A
Max. Overload
Protection
Data Hold
Auto Power Save LPF mode
mode
MAX MIN Hold
DC
measurement
AC
measurement
Units
DC/AC
660 V
Minus polarity
Digit and
decimal point
Low battery indication
AC100 A
AC450 A
[2] APPLICATIONS AND FEATURES
3-3 Test Lead
2-1 Applications
This is a digital leakage clampmeter designed for
measurement 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 the
inside of equipment via a transformer, etc. from
the 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 will
cancel the function.
4-5 BACKLIGHT function
When the backlight button is pressed, the
backlight will be turned on. To disable the
function, 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, the
tiny power is still consumed. When the meter is
not going to be used for an extended period of
time, be sure to turn off the power switch.
To disable the function, turn the function switch
to position other than OFF while holding the
HOLD 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 measuring
terminals to avoid electric shock.
Remarks:
· Clamp the conductor (cable) to measure at the
center of the trans core (CT).
· To measure zero phase current, clamp only
earth wire or all of wires like 2 core or 3 core
wire together.
· The meter may malfunction in places where a
strong magnetic field is present.
· Do not apply voltage and current at the same
time.
ACmA current measurement
Load current
clamp one wire
4-7 Low Battery indication
When the built in batteries have been
discharged 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 (46.7V
peak) are hazardous 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 meter near equipment which
generates strong electromagnetic waves or is
charged.
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 the
meter of the test leads.
8. To start measurement, do not change the
meter 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 to
other terminals.
10. Before starting measurement, make sure that
the function and range are properly set.
11. Never use the meter when it is wet or with wet
hands.
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 check
the 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 with
power cord to be connected to the receptacle.
Overvoltage measurement classification
(CAT. III): Line from the primary side or branch
of equipment which directly takes in electricity
from a distribution board to the receptacle.
Overvoltage measurement classification
(CAT. IV): Line from the service conductor to
the 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 power
and select a measuring function.
4-2 Date Hold function
When the HOLD button is pressed, the reading
indicated will be held with
on the display.
The indicated reading will not change if the
input signal is changed. When this button is
pressed again, the function will be disabled and
the 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 value
of high frequency. When this button is pressed
again, the function will be disabled and the
meter will return to the normal measurement
mode without
on the display.
Finger gurad
Trigger
Remarks:
Cut off frequency: 3 dB at 180 Hz
Power and function
switch
[5] MEASURING PROCEDURE
1. Do not apply an input signal exceeding the
maximum rated input of each function.
2. During measurement, do not change the
function switch.
3. During measurement, keep your finger behind
finger 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, the
low 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 is
damaged or broken.
3. Make sure the test leads are not cut.
4. Make sure the meter and your hand are not
wet.
ACmA current measurement
Zero-phase current
clamp earth wire
4-4 MAX/MIN function
Hold button
When the MAX/MIN button is pressed, the
meter enter MAX/MIN mode, fix a measuring
range and turn
on. Press the button,
to read MAX, MIN, current reading sequence.
Press the button for 1 sec. or more to exit the
MAX/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 measuring
terminals to avoid electric shock.
Never apply a voltage to the input terminals.
1. The panel and case are not resistant to
volatile solvent and must not be cleaned with
thinner 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 or
places 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 check
below 30 ohm
Resistor
Continuity
6-4 Battery Replacement
Remarks:
· Clamp the conductor (cable) to measure at the
center of the trans core (CT).
· Clamp only one cable. If several cables are
clamped together or 2 core or 3 core cords or
cables are clamped, current cannot be
measured accurately.
· The meter may malfunction in places where a
strong magnetic field is present.
5-4 Voltage Measurement (ACV DCV)
Never use the meter in power lines exceeding
600 V to ground.
AC voltage
measurement
DC voltage
measurement
Remarks
· Reading is 30 ohm or below, buzzer sounds.
· Open voltage’ approx. 0.9V
Batteries when the meter is shipped:
A battery for monitoring has been installed prior to
shipment from the factory. It may be discharged
before the expiration of the described battery life.
*The battery for monitoring is a battery used to
check the functions and performance of the
product.
To avoid electric shock, do not remove the battery
door with an input being applied to the measuring
terminals. Also, before starting replacement, make
sure the power of the meter is OFF.
1. Remove the fixing screw of the battery lid with
a minus screwdriver.
2. Replace both two batteries in the battery
[6] MAINTENANCE
1.The following instructions are very important for
safety. 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 their
polarity.)
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 to
falling or other cause?
2) Test leads:
Are the core wires not exposed from the
test 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’ s
authorized 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 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 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 disposables batteries, or any product or
parts, which have been subject to one of the
following causes:
6
7
8
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.
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 product
Please 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 and discontinuity of the
test leads.
2) Repair during the warranty period: The failed
meter 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 the price of the
product. 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 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 product in a box that
is larger than the product 5 times or more in
volume and fill cushion materials fully and then
clearly mark “Repair Product Enclosed” on
the box surface. The cost of sending and
returning the product shall be borne by the
customer.
[8] SPECIFICATIONS
8-1 General Specifications
Operation method:
AC measuring
method
Display:
Double integration
Average sensing
6000count for A/V
9999counts for Resistance
and Continuty check
Sampling rate:
Approx. 2 times/sec.
Over range:
“OL” indication
Range selection:
Auto
Polarity switching:
Auto ( indication)
Low Battery
lights when buit in battery
indication:
voltage is below 2.2 V or
below.
Max. clamp
40mm,
conductor diameter: 35mm(open CT size)
Environmental
Altitude up to 2000
condition:
meters, indoor use
pollution degree 2
Operating
5 to 40 in the humidity
temperature:
range as follows.
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.
Power supply:
LR03 x 2 pcs.
Auto Power Save:
Power save in about 30
mins. after last operation.
Power consumption: Approx. 33 mW TYP
Battery life:
Approx 90 hours
Dimension:
H206 x W83 x D38 mm
Weight:
Approx. 320 g (batteries
included)
Safety standards:
IEC61010 1 CAT.III 600V,
IEC61010 2 032, IEC61010
031
EMC Directive:
Standard
Accessories:
Remarks:
Accuracy is specified at center of CT.
LPF: Approx. [email protected]
Accuracy assurance frequency at LPF function:
50/60 Hz
AC voltage
Function
Range
ACV
600.0 V
Accuracy
(1.2 %rdg + 5 dgt)
Remarks:
Input impedance: Approx 1M ohm.
Bandwidth: 40 Hz ~ 400 Hz (sine wave)
DC voltage
Function
Range
DCV
600.0 V
Accuracy
(1.0 %rdg + 2 dgt)
Remarks:
Input impedance: Approx 1M ohm.
Resistance and Continuity check
Function
Range
Accuracy
(1.0 %rdg + 8 dgt)
999.9
Remarks:
Open voltage: Approx 0.9 V
Buzzer sounds : Less than 30 ohms
IEC61326
Instruction manual
Test leads (TL 23a)
8-2 Measuring Range and Accuracy
Temperature: 23 5 , humidity: 80%RH max.(no
condensation), supply voltage 2.2 V or above.
rdg(reading): Read value. dgt(digit): Number of
counts of last digit.
AC mA current
Function
Range
Accuracy
50 Hz / 60 Hz
(1.2 %rdg + 5 dgt)
40 Hz 400 Hz
(2.5 %rdg + 10 dgt)
60.00 mA
mA
600.0 mA
Remarks:
Accuracy is specified at center of CT.
LPF: Approx. 3 [email protected] Hz
Accuracy assurance frequency at LPF function:
50/60 Hz
AC current
Function
7-3 SANWA web site
http://www.sanwa meter.co.jp
E mail: [email protected] 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
11
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