5-2-1 Measuring the AC current (ACA measurement)
Function
Input
Ranges
AC
0.01
～
400.0
60.00/400.0 A
* The accuracy-guaranteed frequencies of this measurement are from 40 to
400 Hz.
①
Press the
SELECT
button so that
AC
lights.
②
Open the clamp sensor, position the wire to be measured and close the
clamp sensor completely.
③
Read the displayed value.
5-2-2 Measuring the DC current (DCA measurement)
Function
Input
Ranges
DC
± 0.01
～
400.0
60.00/400.0 A
①
Press the
SELECT
button so that
DC
lights.
②
Wait until the display stabilizes, then press the
ZERO
button to perform the
zero adjustment. (
lights on the LCD display.)
③
Open the clamp sensor, position the wire to be measured and close the clamp
sensor completely.
④
Read the displayed value
* Align the orientation of the arrow on the side of the clamp sensor with the
orientation of the measured current. If they are not aligned, the displayed
polarity becomes – (negative).
5-2-3 Measuring the DC + AC current (DCA+ACA measurement)
This function measures the RMS value of a total-wave/half-wave rectified waveform
or a DC wave on which AC wave is superimposed.
Function
Input
Ranges
DC AC
0.1
～
400.0
400.0 A
①
Press the
SELECT
button so that both
DC
and
AC
light.
②
Wait until the display stabilizes, then press the
ZERO
button to perform the zero
adjustment. (
lights on the LCD display.)
③
Open the clamp sensor, position the wire to be measured and close the clamp
sensor completely.
④
Read the displayed value
.
* DCA+ACA is internally calculated as
(DC)
2
+ (AC)
2
. The polarity of the DC
component is not displayed.
* Note the input frequencies and the crest factor.
Remark:
In general, AC measurements use AC coupling.
If an AC signal includes DC offset, only the AC component is measured by
cutting the DC component.
A waveform having the amplitude on only one side, such as the full-wave
rectified wave, is regarded as an AC waveform with which the 0 position is
moved to the midpoint in terms of area.
全波整流波形
AC結合での測定波形
直流+交流
DC+AC
Waveform measured
with AC coupling
Full-wave rectified
waveform
[6] MAINTENANCE
1. This section is very important for safety. Read and understand the following
instructions fully and maintain your instrument properly.
2. To maintain safety and accuracy, calibrate and inspect the instrument at
least every year.
6-1 Maintenance and Inspection
Before use, check the instrument to confirm that there is no abnormality and that
the CT can be opened and close smoothly. If anything is abnormal, do not use the
instrument and return it to your authorized Sanwa agent or distributor for repair.
6-2 Calibration
For more information, please contact Sanwa’s authorized agent / distribute
service provider, listed in our website.
See section 7-3.
6-3 Cleaning and Storage
1. The panel and case are not resistant to volatile solvent and must not be
cleaned with thinner or alcohol. If the instrument gets dirty, wipe with a soft
cloth moistened with a small amount of water.
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, be
sure to remove the batteries.
6-4 Battery replacement
• Batteries shipped with the instrument
The batteries loaded at the factory are monitor batteries, so their service life
may be shorter than that of brand-new batteries. Monitor batteries are a type
of battery used to check the functions and performance of a product.
1. To avoid electric shock, do not remove the battery compartment cover
while an input is applied to the clamp sensor or the instrument is
measuring something.
2. Make sure that this instrument is set to OFF before proceeding to the
battery replacement.
[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:
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 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 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 instrument will be repaired in accordance with the conditions
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 this
product 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 to discontinuation 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 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.
7-3 SANWA web site
http://www.sanwa-meter.co.jp
E-mail: [email protected]
[8] SPECIFICATIONS
8-1 General specifications
Operation method
Δ-
Σ
method
AC detection method
True RMS method (AC coupling)
Display
6000 count
Sampling rate
Approx. 2 times / sec. Approx. 1 time/sec. with
DC+AC function
Overload display
“OL” on the numeric display
Range selection
Auto range
Low battery indication
When the batteries are discharged down to 2.3 V
or less, the
indicator lights on the display.
Current measurement
method
Clamping current sensor (CT )
aperture diameter
Max. approx. dia.
φ
25 mm
Operation
environment
Altitude max. 2000 m, indoor use, environmental
pollution degree II.
Operating
temperature/
humidity
Temperature 5 to 40 °C,
Relative humidity max. 80 % RH at 5-31 °C and
decreases linearly through 80 % RH to 50 % RH at
31-40 °C (without condensation)
Storage temperature/
humidity
-10 to 40°C: Max. 80 % RH (without condensation)
40 to 50°C: Max. 70 % RH (without condensation)
(Remove the internal 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 x 0.15 per 1 °C
Power supply
“AAA”-size alkaline battery LR03 x 2
Auto power OFF
Power OFF in approx. 15 min. after last operation
Power consumption /
Battery life
Approx. 25 mA / Approx. 35 hours (backlight
extinguished)
Dimensions and mass
145 (
H
) x 54 (
W
) x 31 (
D
) mm, approx. 120 g
(including batteries)
Safety standards
IEC61010-1, IEC61010-2-030 CAT. III 300 V,
IEC61010-2-32
EMC directive
IEC61326-1
Accessories
Instruction manual, carrying pouch (C-DCL10)
8-2 Measuring ranges and accuracies
Accuracy-guaranteed temperature/humidity range: 23 ±5 °C, max. 80 % RH
(without condensation).
rdg: Reading.
dgt: digits (lowest digit)
Accuracy-guaranteed range: 1 % to 100 % of measurement range
Crest factor CF: Full-scale CF < 1.6, half scale CF < 3.2
ACA measurement
RMS response, AC coupling (sine wave alternate current)
Range
Resolution
Accuracy: 50/60 Hz
Accuracy: 45-400 Hz
60.00 A
0.01 A
±(2.0 %rdg + 5 dgt)
±(3.0 %rdg + 10 dgt)
400.0 A
0.1 A
DCA measurement
Range
Resolution
Accuracy
60.00 A
0.01 A
±
（
2.0 %rdg + 5 dgt
）
400.0 A
0.1 A
Note: Accuracy after the zero point is set by pressing the
ZERO
button.
DCA+ACA measurement
Range
Resolution
Accuracy: 50/60 Hz
Accuracy: 45-400 Hz
400.0 A
0.1 A
±
（
2.5 %rdg + 10 dgt
）
±
（
3.5 %rdg + 15 dgt
）
Note: Accuracy after the zero point is set by pressing the
ZERO
button. The
polarity of the DC component is not displayed. * DCA+ACA is internally
calculated as
DC
2
+ AC
2
.
Peak hold
Range
Resolution
Accuracy
400.0 A
0.1 A
±
（
3.0 %rdg + 10 dgt
）
* With a waveform having a level of 4.0 A or more and width of 2 msec, or more.
Accuracy measurement method
(Example)
ACA measurement
Reading: 10.00 A
Range accuracy: 60.00 A range = ±(2 %rdg + 5 dgt)
Error: ±(10.00 A x 2.0 % + 0.01 A + 5) = ±0.25 A
True value: 10.00 A ±0.25 A (in the range from 9.75 to 10.25 A)
* 3 dgt in the 60.00 A range is equivalent to 0.03 A.
* 3 dgt in the 300.00 A range is equivalent to 0.3 A.
Specifications and external appearance of the product described above
may be revised or modified without prior notice.
WARNING
CAUTION
WARNING
①
Using a Phillips screwdriver, remove the
fixing screw (x 1) from the battery
compartment cover.
②
Remove the battery compartment cover.
③
Replace both of the batteries in the
battery holder with new ones by
observing the correct polarity.
④
Place the battery compartment cover
and tighten the fixing screw in the
original position.
− 5 −
− 7 −
− 6 −
− 8 −