Kusam-meco KM 2783 User manual

An ISO 9001:2008 Company
®
G-17, Bharat Industrial Estate, T. J. Road, Sewree (W), Mumbai - 400 015. INDIA.
Sales Direct.: 022 -24156638, Tel. : [phone], Fax : 022 - 24149659
Email : [email protected], Website : www.kusamelectrical.com
An ISO 9001:2008 Company
®
All Specifications are subject to change without prior notice
Navin.com/D.drive/sandeep gupta/New catlog Dec 2011/KM 2783.cdr
15 FUNCTIONS 34 RANGES
Model KM 2783
3¾ DIGIT 1000A AC DUAL DISPLAY
DIGITAL CLAMP METER
SAFETY :
?Safety Standards : The meter is up to the standards of IEC 1010 double insulation, Pollution Degree 2, Overvoltage CAT II
GENERAL SPECIFICATIONS :
ACCESSORIES :
Battery, Manual, Test leads(1 pair), Carrying Case.
- +
ïSensing : Average sensing.
ïJaw opening size : 45 mm
ïDisplay : 3¾ digit LCD with a max. Reading of 3999.
ïRange Selection : Autorange selection
ïPolarity : Automatic negative polarity indication
ïZero adjustment : Automatic
ïOver range indication : only the “OL” display
ïLow battery indication : The “ ” is display when the battery Voltage is below 7.2V.
ïAuto Power Off : 30 minutes after stopping the switch or no push button, the meter automatically enter to
power off mode. Push button or run switch, auto power off disable.
ïOperating Temperature : 0 ~ 40°C, Humidity < 80% R.H.
ïStorage Temperature : -20 ~ 60°C, Humidity < 90% R.H.
ïPower Supply : 9V zinc ~ carbon battery.
ïDimension : 225(H) x 77(W) x 45(D) mm
ïWeight : approx. 330g. (Including battery)
ELECTRICAL SPECIFICATIONS - KM 2783
Accuracies are ±(% of reading + digit) at 23°C ± 5°C Less than 70% R.H.
AC VOLTAGE
Average sensing, calibrated to rms of sine wave
Overload protection : 1000V DC /750VrmsAC;
Impedance : 10MW , More then 100MW on 400mV scale
Range Resolution Accuracy
400 mV
4 V
40 V
400 V
750 V
0.1 mV
1 mV
10 mV
100 mV
1 V
±(3.0%rdg + 15dgts)
±(2.5%rdg + 15dgts)
±(1.0%rdg + 15dgts)
Frequency
50~100Hz
50~400Hz
Overload protection : 250V DC/250Vrms AC
Sensitivity : Range of input voltage : 1.5V~1 0V,
if input voltage over range,
need adjust
FREQUENCY
Accuracy
Resolution
Range
10 Hz
100 Hz
1000 Hz
10 kHz
100 kHz
1000 kHz
10 MHz 10 kHz
1 kHz
100 Hz
10 Hz
1 Hz
0.1 Hz
0.01 Hz
±(0.5%rdg + 15dgts)
Built-in buzzer sounds
if reisitance is less
than 90W
Overload protection : 250V DC/250Vrms AC
DIODE AND AUDIBLE CONTINUITY TEST
Range Description Test condition
Display read approx.
Forward voltage of
diode.
Forward DC current
approx. 0.4mA
Reversed DC Voltage
Approx. 1.5V
Open circuit voltage
approx. 0.5V
CAPACITANCE
Overload protection : 250V DC/250Vrms AC
Range Resolution Accuracy
40 nF
400 nF
4 mF
40 mF
100 mF
10 pF
100 pF
1 nF
10 nF
100 nF
±(3.5%rdg + 30dgts)
±(2.5%rdg + 25dgts)
±(5.0%rdg + 20dgts)
RESISTANCE
Overload protection : 250V DC/250Vrms AC
0.1 W
1 W
10 W
100 W
1 kW
10 kW
Accuracy
Resolution
Range
±(2.0%rdg + 20dgts)
±(1.2%rdg + 20dgts)
±(1.8%rdg + 20dgts)
400 W
4 kW
40 kW
400 kW
4 MW
40 MW
DC VOLTAGE
Overload protection : 1000V DC/750Vrms AC
Impedance : 10MW , More then 100MW on
400mV scale
400 mV
4 V
40 V
400 V
1000 V
0.1 mV
1 mV
10 mV
100 mV
1 V
±(0.5%rdg + 7dgts)
±(0.8%rdg + 7dgts)
Range Resolution Accuracy
50~60Hz
50~60Hz
AC CURRENT
Average sensing, calibrated to rms of sine wave
Overload protection : 1000Arms within 60 seconds.
Range Resolution Accuracy
40 A
400 A
1000 A
0.01 A
0.1 A
1 A
±(2.5%rdg + 25dgts)
±(5.5%rdg + 25dgts)
±(2.5%rdg + 25dgts)
Frequency
0~800
800~1000
±(2.0%rdg + 20dgts)
DUTY CYCLE
0.1% ~99.9%
Preliminary Data

G 17,Bharat Industrial Estate, T. J. Road,
Sewree (W), Mumbai - 400 015. INDIA.
Sales Direct : [phone]
Tel. : [phone].
Fax : [phone]
Email : [email protected]
Website : www.kusamelectrical.com,
www.kusam-meco.co.in
OFF
Hz
V
W
CAP
°C
40A
OFF AUTO
POWER OFF
DH>2sec
~
SELECT RANGE REL
HzDuty
A
AUTO
999.9
COM
T- T+VWHz
CAT-II
MAX
1000V
750V
~
!
KM 2783
AC
~
400A/
1000A
~
~
A
AUTO
999.9
AC
DIGITAL DUAL DISPLAY
AC CLAMPMETER
MODEL - KM 2783
OPERATION MANUAL

Nearly every electrical engineer has a hand held
digital clamp meter (Tongtester). We sometimes take
them for granted, until we damage them or “burn
them out”. If you incorrectly connect your clamp
meter to a circuit, or if you have the clamp meter on
wrong setting, you damage the meter and possibly
hurt yourself. You can also get into trouble if you try to
measure the voltage across a charged capacitor.
Clamp meter users frequently burn their meters
by trying to measure current the same way as they
measure voltage. Remember, you measure voltage
across a circuit, and current through a circuit. When
you use the current input, your clamp meter becomes
a low impedance circuit element.
Even if you correctly insert your clamp meter in to
the circuit, you can still damage your meter. Don’t try
to measure current in excess of your meter’s
capacity. Check the current capacity of the Clamp
meter.
If you are measuring current in industrial
environment to prevent excess current from flowing
through your meter, always disconnect your test
leads from the circuit under test whenever you
change Clamp meter functions. Set your meter to
the correct function, say current, and its highest
range for the setting. If the reading is small, change
the range to the next lower range till the reading can
be read with the best possible accuracy. When
measuring voltage, connect the test leads before
your apply power to your circuit. To be safe, start by
setting your meter to its highest range first.
TAKE MEASUREMENT CAREFULLY AND YOU’LL
SPARE YOUR METER AND YOURSELF, SOME PAIN
TABLE OF CONTENTS
Title Page
Safety Information ...................................... 01
General Specifications................................ 03
Electrical Specifications...............................04
Product Description.....................................07
Measuring instruction..................................09
Care and Maintenance................................13
Battery Replacement ..................................14
Test Certificate....... .....................................15
Warranty .....................................................16

01
1. SAFETY INFORMATION
The following safety information must be observed
to insure maximum personal safety during the
operation of this meter.
1. When measuring voltage ensure that instrument
is not switched to the current range, resistance
range, diode and continuity range, capacitance
range or temperature range.
2. Use extreme care when measuring voltage
above 50V especially from sources where
high energy is existed.
3. Avoid making connections to “live” circuits
whenever possible.
4. Before making resistance measurements,
diode or continuity test, capacitance test or
temperature test, ensure that the circuit under
test is de-energized.
5. Always ensure that the correct function and
range is selected.
6. Extreme care should be taken when using the
instrument to conjunction with a current
transformer connected to the terminals if an
open circuit occurs.
7. Ensure that the test leads and probes are
in good condition with no damage to the
insulation.
This LCD Auto Range & Auto Power off Digital AC
clamp multimeter is a portable, 3 3/4-digit
multimeter. It is ideally suited for field, laboratory,
shop and home applications.
02
8. Take care not to exceed the over-load limits as
given in the specifications.
9. Before opening the cover of the battery
cabinet to replace batteries. Disconnect the
test leads from any external circuit, set the
selector switch to “OFF” position.
10. Keep the fingers after the protection ring when
measuring through the instrument lead.
11. Change the battery when the symbol appears
to avoid incorrect data.
12. Do not use the meter in any environmental
conditions beyond those specified in the
manual.

2. GENERAL SPECIFICATIONS
?Display : 3¾ digit LCD with a max. reading
of 3999.
?Range control : Auto / Manual range control.
?Polarity : Automatic negative polarity indication.
?Zero adjustment : Automatic.
?Over range indication : Only the “OL” display.
?Low battery : The “ ” is display when the
battery voltage is below 2.4V.
?Auto Power Off : 30 minutes after shopping the
switch or no push button, the meter
automatically enter to power off mode. Push
button or run switch, auto power off disable.
?Safety standards : The meter is up to the
standards of IEC1010 Double Insulation, Pollution
Degree 2, Overvoltage Category II.
?Clamp opening size : 45 mm.
?Operating Environment :
Temperature 32 ~ 104° F(0 ~ 40°C), humidity
<80% R.H.
?Storage Environment :
Temperature -4 ~ 140° F(-20 ~ 60°C), humidity
<90% R.H.
?Power Supply : 9V Zinc-carbon battery.
?Dimension : 225(H) x 90(W) x 45(D) mm
?Weight : Approx. 330g (including batteries)
03 04
3. ELECTRICAL SPECIFICATIONS
Accuracies are ± (% of reading + number in last
digits ) at 23 ± 5°C, £75%RH.
DC Voltage
AC Current
Average sensing, calibrated to rms of sine wave
Overload protection: 1000Arms within 60 seconds
Frequency : 50~60Hz.
Accuracy
±(0.5% rdg + 7 digits)
1.0% rdg + 10 digits)
Range
400 mV
4 V
40 V
400 V
1000 V
Resolution
0.1 mV
1 mV
10 mV
100 mV
1 V
Overload protection : 1000V DC / 750V rms AC
Impedance : 10MÙ, more than 100MÙon 400mV scale.
Average sensing, calibrated to rms of sine wave
Overload protection : 1000V DC / 750 V rms AC;
Impedance : 10MW, more than 100MWon 400mV scale.
Frequency : 50~400Hz for 400mV, 4V, 40V & 400V ranges.
50~100Hz for 750V range.
AC Voltage
Range
4 V
40 V
400 V
750 V
400 mV
Resolution
1 mV
10 mV
100 mV
1 V
0.1 mV
Accuracy
1.0% rdg + 15 dgts)
2.5% rdg + 15 dgts)
3.0% rdg + 15 dgts)
400A
0~800
800~1000
1000A
Range
40A
2.0% rdg + 20 dgts
2.5% rdg + 25 dgts
5.5% rdg + 25 dgts
Accuracy
2.5% rdg + 25 dgts
0.1 A
1 A
Resolution
0.01 A

05
Resistance
Overload protection : 250V DC / 250 V rms AC
Range
400 Ù
4 kÙ
40 kÙ
400 kÙ
4 MÙ
40 MÙ
Resolution
0.1 Ù
1 Ù
10 Ù
100 Ù
1 kÙ
10 kÙ
Accuracy
1.8% rdg + 20 dgts
1.2% rdg + 20 dgts
2.0% rdg + 20 dgts
Overload protection : 250V DC / 250 V rms AC
Capacitance
Range
40 nF
400 nF
4 µF
40 µF
100 µF
Resolution
10 PF
100 PF
1 nF
10 nF
100 nF
Accuracy
3.5% rdg + 30 dgts
5.0%rdg + 20 dgts
2.5%rdg + 25 dgts
Frequency
Overload protection : 250V DC/250V rms AC
Sensitivity : Range of input voltage : 1.5V~10V,
if input voltage is over range, need adjust.
06
Range
10 Hz
100 Hz
1000 Hz
10 kHz
100 kHz
1000 kHz
10 MHz
Resolution
0.01 Hz
0.1 Hz
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
Accuracy
0.5% rdg + 15 dgts
Diode and Audible Continuity Test
Range Description
Display read approx.
Forward voltage of
diode
Test Condition
Overload protection : 250V DC/250V rms AC
Built-in buzzer
sounds if resistance
is less than 90W
Forward DC current
approx. 0.4mA
Reversed DC voltage
approx. 1.5V
Open circuit voltage
approx. 0.5V
Temperature (NiCr-NiSi sensor)
Overload protection : 36V DC / 36V rms AC
Resolution
1°C
1°C
1°C
Range
-20~150°C
150~300°C
300~1000°C
Accuracy*
3°C + 2
3.0% rdg + 2dgts
3.5% rdg + 10dgts
Duty cycle : 0.1%~99.9%

07
OFF
V
~
CAP
W
KM 2783
COM
T- T+VWHz
CAT-II
MAX
1000V
750V
~
!
-1.8.8.8
Hz
°C
40A
OFF
DH
SELECT RANGE REL
HzDuty
~
400A/
1000A
~
~
2
3
4
5
6
1
7
8
2. PANEL DESCRIPTION
1. Rotary Switch : Use this switch to select
functions and ranges.
2. D.Hold Key : In any range press the key, the
present display value will be locked and the
“DH” symbol will appear, press it again to exit
HOLD and the “DH” symbol disappear.
08
5. Hz / DUTY key :
In Hz range, push the key, you can measure
the duty, push again, go back to Hz
measurement. In voltage range, push it, you
can measure Hz and duty, but the measurement
range will be smaller, and the auto range mode
will changed to manual range mode.
6. REL key:
Press the key, the present display value will
be stored in memory, then the new display
value is the difference between input value
& stored data. In Hz/Duty measurement, it can
not work.
7. LCD Display :
LCD Dual Display, facilitates reading the data.
8. T+V Winput jack, COM input jack,
T-input jack
4. RANGE key :
Press the key to select manual mode, press it
again to change the range. Press the key for
more than 2 seconds to go back to auto range
mode. But in Hz/Duty & Capacitance
measurement, it can not select manual range
mode.
3. SELECT Key :
This key works on the “O” & “V ” range.
Press the key to choose resistance, diode or
continuity test. Press “SELECT” in “V ” range,
choose AC voltage or DC Voltage test.
~
~

10
DC Voltage measurement
1) Connect the black test lead to “COM”
socket and red test lead to the “ ” socket.
2) Set the selector switch to desired “mV” or “V”
position and connect the probes across the
the source or load under measurement.
3) Read the result from the LCD panel.
3. MEASURING INSTRUCTION
1) Connect the black test lead to “COM”
socket and red test lead to the “ ” socket.
2) Set the selector switch to desired “V~”
position and connect the probes across the
source or load under measurement.
3) Read the result from the LCD panel.
AC Voltage measurement
AC Current measurement
1) Set the selector switch to desired “A~” position.
2) Open the clamp by pressing the jaw-opening
handle.
3) Close the clamp and get the reading from
the LCD panel.
Note :
a) Before this measurement, disconnect the test
lead with the meter for safety.
b) In same occasion that the reading is hard to
read, push the D.HOLD button and read the
result later.
09
Resistance measurement
1) Connect the black test lead to “COM” socket
and red test lead to the “ ” socket.
2) Set the selector switch to desired “O” position,
the present function is resistance measurement,
if it is other function, push the SELECT to select
resistance measurement.
3) Connect the probes across circuit to be tested.
4) Read the result from the LCD panel.
Caution :
Ensure that the circuit to be tested is “dead”.
Max. Input Over-load : 250V rms<10 sec.
Capacitance measurement
1) Connect the black test lead to “COM” socket
and red test lead to the “ ” socket.
2) Set the selector switch to desired “CAP”
position.
3) Connect the probes to the capacitance to be
tested.
4) Read the result from the LCD panel.
Caution :
a) Capacitors should be discharged before
being tested.
b) This device adopts charging mode to measure
capacitance, so when testing large capacitance
it will take longer time before the final indication,
and larger the capacitor, the longer the time
(For 100uF range, it will take about 15 seconds).
c) When testing small capacitance, to assure the
measurement accuracy, first press “REL” then
go on measuring.
Max. Input Over-load : 250V rms<10 sec.

11 12
Frequency measurement
1) Connect the black test lead to “COM” socket
and red test lead to the “ ” socket.
2) Set the selector switch to desired “Hz” position.
3) Connect the probes to the point of
measurement and read the frequency from
the display.
Max. Input over-load: 250Vrms< 10sec
Caution :
Ensure that the circuit to be tested is “dead”.
Max. Input Over-load : 250V rms<10Sec
Diode test
1) Connect the black test lead to “COM” socket
and red test lead to the “ ” socket.
2) Set the selector switch to “W” position.
3) Push “SELECT” to select diode test.
4) Connect the black and red test probe to the
cathode (-) and anode (+) ends of diode to be
tested respectively. Read the forward voltage
drop (junction) value from the display. If reverse
connected the probes to diode, display shows
over-load.
Caution :
Ensure the that circuit to be tested is “dead”.
Max. Input over-load : 250V rms<10Sec
1) Connect the black test lead to “COM” socket
and red test lead to the “ ” socket.
2) Set the selector switch to “W” position.
3) Push “SELECT” to select audible continuity test.
4) Connect the probes across circuit to be tested,
the beeper sounds continuously if the
resistance is less than approx. 50Ù.
Audible Continuity test
Temperature measurement
1) Connect the black test lead of the sensor to
“COM” socket and the red test lead to the “ ”
socket.
2) Set the selector switch to “ °C” position.
3) Put the sensor probe into the temperature field
under measurement.
4) Read the result from the LCD panel.
A. The temperature function shows random
number at ordinary times, must insert the
thermocouple in temperature test hole while
examining temperature.
B. This meter inclosure WRNM-010 type contact
thermocouple limit temperature is 250°C
(300°C shortly).
C. Please don't change the thermocouple at will
otherwise we can't guarantee to measure
accuracy.
D. Please don't importing the voltage in the
temperature function.
NOTE :
Max. Input Over-load : 250V rms<10 sec.
The auto range mode is a convenient function, but
it might be faster to manually set the range when
you measure values that you know to be within a
certain range. To select manual range control,
repeatedly press "RANGE" for more than 2
seconds, then it can go to auto range mode. In
Hz/Duty and capacitance measurement, it can not
select manual range mode.
Auto/Manual Range Control
Caution :
While suing the manual range control, if "OL"
appears on the display and you hear an
intermittent tone, immediately set RANGE to a
higher range.

13 14
Relative measurement
Press “REL” button you can measure the relative
value and “ ” appears on the display, the auto
range mode will changed to manual range mode.
Press again to return to the previous condition &
“ ” disappears, but you can not go back to auto
range mode. In Hz/Duty measurement, you can not
measure the relative value.
1) Keep the Multimeter dry. If it gets wet, wipe it
dry immediately. Liquids can contain minerals
that can corrode electronic circuits.
2) Use and store the multimeter only in normal
temperature environments. Temperature
extremes can shorten the life of electronic
devices, damage batteries and distort & melt
plastic parts.
3) Handle the multimeter gently and carefully.
Dropping it can damage the circuit boards
and cause and accuse the multimeter to work
improperly.
4) While take current measurement, keep the
cable at the center of the clamp will get more
accurate test result.
5) Keep the multimeter away from dust and dirt,
which can cause premature wear of parts.
4. CARE AND MAINTENANCE
1) Caring For Your Multimeter
KM 2783 Digital Multimeter is an example of
superior design & craftsmanship. The following
suggestions will help you care for the multimeter
so you can enjoy it for years.
2) Battery Replacement
1) Ensure the instrument is not connected to any
external circuit. Set the selector switch to “OFF”
position and remove the test leads from the
terminals.
2) Open the cover of the battery cabinet
using a screwdriver.
3) Replace the old batteries with the same type
new batteries.
4) Close the battery cabinet cover and fasten the
screw.
6) Wipe the multimeter with a damp cloth
occasionally to keep it looking new. Do not use
harsh chemicals, cleaning solvents, or strong
detergents to clean the multimeter.
7) Use only fresh batteries of the required size and
type. Always remove old or weak batteries. They
leak chemical that destroy electronic circuits.
8) Please take out the battery when not using for
a long time.

All transaction are subject to Mumbai Jurisdiction.
15 16
WARRANTY
Each “KUSAM-MECO” product is warranted to be free
from defects in material and workmanship under normal
use & service. The warranty period is one year (12
months) and begins from the date of despatch of goods.
In case any defect occurs in functioning of the instrument,
under proper use, within the warranty period, the same will
be rectified by us free of charges, provided the to and fro
freight charges are borne by you.
This warranty extends only to the original buyer or end-
user customer of a “KUSAM-MECO” authorized dealer.
This warranty does not apply for damaged Ic’s, fuses,
burnt PCB's, disposable batteries, carrying case, test
leads, or to any product which in “KUSAM-MECO’s”
opinion, has been misused, altered, neglected,
contaminated or damaged by accident or abnormal
conditions of operation or handling.
“KUSAM-MECO” authorized dealer shall extend this
warranty on new and unused products to end-user
customers only but have no authority to extend a greater
or different warranty on behalf of “KUSAM-MECO”.
“KUSAM-MECO’s” warranty obligation is limited, at
option, free of charge repair, or replacement of a defective
product which is returned to a “KUSAM-MECO”
authorized service center within the warranty period.
THIS WARRANTY IS B U Y E R ’ S S O L E AND
EXCLUSIVE REMEDY AND IS IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED,
I N C L U D I N G B U T N O T L I M I T E D T O A N Y
IMPLIED WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE.
“KUSAM-MECO” SHALL NOT BE LIABLE FOR
ANY SPECIAL , IND IRECT, INC IDE NTAL OR
CO N S EQU E N TIA L D A MAG E S O R L OSS E S ,
INCLUDING LOSS OF DATA, ARISING FROM
ANY CAUSE WHATSOEVER.
MUMBAI
TEST CERTIFICATE
DIGITAL DUAL DISPLAY
AC CLAMPMETER
This Test Certificate warrantees that the product
has been inspected and tested in accordance with
the published specifications.
The instrument has been calibrated by using
equipment which has already been calibrated to
standards traceable to national standards.
MODEL NO. __________________
KM 2783
SERIAL NO. ___________
DATE: ___________
ISO 9001
REGISTERED
QC
PASS
KUSAM-MECO