Kusam-meco KM-1520 User manual

DIGITAL
EARTH RESISTANCE TESTER
KM-1520
INSTRUCTION MANUAL
Each “KUSAM-MECO” product is warranted to be free from defects in material and
workmanship under normal use & service. The warranty period is Two year (24
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, Burn’t PCB 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 BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. “KUSAM-MECO” SHALL NOT BE LIABLE FOR
ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR
LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE
WHATSOEVER.
All transaction are subject to Mumbai Jurisdiction.
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
WARRANTY
An ISO 9001:2000 Company

1. PRODUCT DESCRIPTION
1. Jack For “EARTH” Lead
connection
2. Operation Indicator
3. Data Hold Switch
4. Timer off Button
5. LCD Display
6. Jacks For “LINE” Lead
conection
7. Function Switch
8. Ohm Range Switch
9. Push button Operation
10. Timer On Button
1
2
3
4
5
6
7
8
9
10
OFF W
ACV
PUSH-ON
TIMER
OFF ON
E
200 V-
Max
DIGITAL
EARTH RESISTACE TESTER
C
ON
OFF
CAT III
2KW
200W
20 W
P
1 2
!
Meter is protected throughout by double insulation
or reinforced insulation.
Caution ! Refer to this manual before using the meter.
Warning ! Risk of electric shock
2. INTRODUCTION
This meter has been designed and tested according to IEC
Publication 348, Safety Requirements for Electronic Measuring
Apparatus, IEC1010 (EN 61010) and other safety standards.
Follow all warnings to ensure safe operation.
NOTE
READ “SAFETY NOTES” BEFORE USING THE METER.
WARNING
3. SAFETY NOTES
·Read the following safety information carefully before
attempting to operate or service the meter.
·Use the meter only as specified in this manual; otherwise the
protection provided by this meter may be impaired.
·Rated environmental conditions:
1) Indoor use
2) installation Category III
3) Pollution degree 2
4) Altitude up to 2000 Meter
5) Relative Humidity 80% Max
o
6) Ambient Temperature 0-40 C
·Observe the international Electrical Symbols listed below.

4. FEATURES
3 4
?Capable of measuring earth voltage.
?2 mA measuring current permits earth resistance tests
without tripping earth leakage current breakers in the
circuit under test.
?Battery operated.
?Auto power off function. The timer operates automatically
about 3 ~ 6 minutes when the “PUSHBUTTON SWITCH”
and TIMER ON BUTTON” are pressed at the same time to
keep the tester power on.
?Data hold function.
?Small and light weight.
?Designed to meet IEC-1010-1 (EN61010-1) CAT III 200V
5. SPECIFICATIONS
?Measurement system :
Earth Resistance by constant current inverter.
820Hz, 2 mA approx.
?Earth Voltage : 0 ~ 200V AC, 40 ~ 500 Hz
?Earth Resistance :Range and resolution
0~20 ohm (0.01ohm)
0~200 ohm(0.1 ohm)
0~2000 ohm(1 ohm)
?Accuracy :
Earth Voltage ± (1%rdg + 2dgt)
Earth resistance ± (2% rdg +2dgt) or ± 0.1W,
which ever is greater.
?Safety standard :
IEC -1010(EN 61010), installation category III
?Low battery indication :
“B” symbol appears on the display
?Over range indication :
“DH” symbol appears on the display
?Timer (Auto power off): about 3 ~ 6 minutes
?Display : LCD 3 ½ digit (2000 counts)
?Power source : 1.5V x 6 pieces dry batteries
?Dimensions : 163 (L) x 100 (W) x 50 (D) mm
?Weight : Approx. 800g( battery included)
?Accessories :
Test leads (red- 15M, yellow- 10M, green -5M),
Auxiliary Earth Bars, Heavy Case, Instruction Manual.

5
E
OFF W
ACV
PUSH-ON
TIMER
OFF ON
200 V-
Max
19.99 W
DIGITAL
EARTH RESISTACE TESTER
C
ON
OFF
CAT III
2KW
200W
20 W
P
C1 P1 E
Red
Yellow
Green
EARTH
5~10m 5~10m
Fig.1
6. MEASURING METHODS
BEFORE PROCEEDING WITH MEASUREMENT,
READ THE SAFETY NOTES ON PAGE 2.
Connect green, yellow and red test leads to instrument
terminals E, P and C with auxiliary earth bars P1, C1
driven into earth“IN A STRAIGHT LINE”; (Fig.1)
1. Connection with test leads :
2. Set the function switch to ACV position and make certain
that the voltage reading is LESS THAN 10V AC, otherwise
accurate earth resistance measurement may not be made.
3. Set the Range Switch to suitable range and set the function
switch to Wposition then press the PUSH-ON BUTTON and
TIMER ON BUTTON at the same time and take the reading
on the display.
«: When none of E, P and C terminals connected with test
leads, the display shows “1” at Wfunction.
«: Follow the proper connection such as Fig. 1, the LED (red)
indicator will lit. This proves a correct current circulation is
under its operation.
6
7. MAINTENANCE
When the symbol “B” appears on the display, replace the
batteries as follows :
?Battery Replacement :
3. Place back cover and secure by a screw.
1. Disconnect the Test Leads from the instrument and
turn off the power.
2. Use a screwdriver to unscrew the screw on back
cover then slide the cover, take out the batteries and
replace with new batteries Type SUM-3
?Cleaning and Storage :
WARNING
To avoid electrical shock or damage to the
Meter,do not get water inside the case
Periodically wipe the case with a damp cloth and detergent;
do not use abrasives or solvents.
If the meter is not to be used for periods of longer than
60 days, remove the batteries and store them separately.