MULTI MEASURING INSTRUMENTS CO.,LTD. ALCL–40H Instruction Manual

LEAKAGE CLAMP TESTER FOR ARRESTER

ALCL – 40H

INSTRUCTION MANUAL

Thank you very much for selecting our model ALCL-40H

Leakage Clamp Tester for Arrester.

Before use the instrument, read this instruction manual

completely and familiarize yourself thoroughly with all

functions.

Keep this instruction manual carefully to take out

whenever you need.

MULTI MEASURING INSTRUMENTS CO.,LTD.

Akihabara Murai Bldg. 7F, 1-26 Kanda Sakuma-cho,

Chiyoda-ku, Tokyo, Japan, 101-0025

TEL : [phone] FAX : [phone]

Home Page : http://www.mutimic.com/

E-mail : [e-mail]

SAFETY SUMMARY observe by all means

● To use this instrument safely, read this "SAFETY SUMMARY" carefully and
apply

the instrument correctly.

● The CAUTIONs and WARNINGs which appear on the following pages are stated
to prevent the operator & other people from the dangers and their properties from
the damages beforehand.

△ WARNING : This symbol indicates the contents "Possibilities of the death or
the serious wound can be supposed" caused from mis-operations.
△ CAUTION : This symbol indicates the contents "Possibilities of the injury or

only the material damage can be supposed" caused from mis-
operations.

○ OPERATION ENVIRONMENT

△ CAUTION

● Do not use or storage this instrument under the condition of direct rays of the

sun.High temperature & humidity and or condensation, as it may cause the

deformation and or the isolation defect of the instrument.

● Do not use this instrument in the environment influenced by acids, alkalis,
organic solutions. corrosive gas, etc.

● Do not use or storage this instrument where the mechanical vibration can be
directly transmitted, as it may cause defect of the instrument.

● Do not use this instrument nearby the appliances which generate strong
magnetic field and or electric field, as it may cause mis-movement of the
instrument.

● This instrument does not have the water / dust-proof structure. Do not use this
instrument in the environment with a lot of dust and drops of water, as it may

cause defect of the instrument.

○ OPERATION CONDITION & CONNECTION

△ WARNING

POSSIBLE ELECTRICAL SHOCK

● This instrument is for the use of low voltage circuit.
Do not make measurements of power lines carrying more than AC 500V.
Before use, check and confirm the voltage of circuit to be measured.

● Apply only the coated cables and do not clamp bare cables.

POSSIBLE ELECTRICAL SHOCK OR ACCIDENT

● Do not handle the instrument in the rain, at humid place, with a drop of water
and

or with wet hands.

● Do not use the instrument if the CT or CT case are damaged and if something is
wrong with the CT cables.

● If excessive current is applied to the CT, the instrument will be heated and

damaged. Use the CT according to the rating current.

1. GENERAL

・This leakage clamp tester model ALCL-40H mainly measures quite low & sensitive
leakage current very accurately.

・At 300μA range, the minimum resolution is 0.1μA.
・Using ultra accurate CT which is hardly influenced by external magnetic field.
・Voltage output terminal for oscilloscope, etc. to see the wave form.

2. SPECIFICATIONS

(1) Measuring Function :Leakage Current, Harmonic Current (Dominant & Third)
(2) Measuring Method : CT Clamp-on Method
(3) Measuring Range : 0-300μA/3mA/30mA(3range manual)
(4) Input Frequency : 45-60Hz(Dominant Wave Frequency)
(5) AC Conversion : RMS Detection Method
(6) A/D Conversion : Double Integration Method
(7) Display : 3200 count max., LCD
(8) Voltage Output : 300mV full scale for each range
(9) Sampling Rate : 2 times/second
(10) Over Indication : "OL" on the display
(11) Low Battery Indication : "B" sign on the display
(12) Data Hold Function : "DH" sign on the display
(13) Auto Power Off : Approx. 10 minutes after power on
(14) Max. Jaw Opening : φ37mm
(15) Power Supply : 9V Alkaline Battery (6LR61)
(16) Power Consumption : Approx. 20mW
(17) Operating Circuit Voltage : Less than 500V AC
(18) Operating Temperature : 0～40℃, less than 80%RH, w/o condensation

(19) Storage Temperature : -10～60℃, less than 70%RH, w/o condensation
(20) Dimensions/Weight : Unit:/95(W)x160(H)x34(D)mm, 260gs
CT:/135(W)x166(H)x61(D)mm, 1000gs
(21) Accessories : Battery 6LR61x1, CT
Carrying Case, Instruction Manual
BNC Connector (Option)

Accuracy (23℃±5℃, less than 80%RH)

(1) AC Current

Range

Resolution

Accuracy(45～65Hz)

Max.Applicable Current

300μA

100nA(0.1μA)

1.2%±8digit

40A rms

3mA

1μA(0.001mA)

30mA

10μA(0.01mA)

AC Conversion : RMS Detection Method
Crest Factor : ＜3 (0～50% of the range)
＜2(50～100% of the range)

(2) Harmonic Current (Dominant Current, 3rd Harmonic Current)
Detection Method : Automatic Tuned Filter
Min. Dominant Current Input : more than 3% of each range
Accuracy : (1%±5digit)±(AC Current Accuracy)