AEMC instruments 2110.84 Посібник користувача

Переглянути онлайн або завантажити pdf Посібник користувача для Вимірювальні прилади AEMC instruments 2110.84. AEMC instruments 2110.84 2 сторінки. Ac current probe

Друкувати сторінку

OPERATION

Please make sure that you have already read and fully understand the WARNING section on page 1.

Making Measurements with the AC Current Probe Model JM835A

• Connect the black and red terminals to the Ampere AC range of your DMM or current measuring

instrument. Select the appropriate current range (5A AC). Clamp the probe around the conductor to be

tested. If the reading is less than 2 A, select the lower range until you obtain the best resolution. Read the

value display on the DMM and multiply it by the probe ratio (3000/5 = 600). (If reading = 0.592A AC, the

current flowing through the probe is 0.592 A x 600 = 355.2 A).

• For best accuracy: carefully center the conductor inside the probe jaw, avoid if possible, the proximity of

other conductors which may create noise.

Tips for Making Precise Measurements

• When using a current probe with a meter, it is important to select the range that provides the best

resolution. Failure to do this may result in measurement errors.

• Make sure that probe jaw mating surfaces are free of dust and contamination. Contaminants cause air

gaps between the jaws, increasing the phase shift between primary and secondary. It is very critical for

power measurement.

MAINTENANCE:

Warning

• For maintenance use only original replacement parts.

• To avoid electrical shock, do not attempt to perform any servicing unless you are qualified to do so.

• To avoid electrical shock and/or damage to the instrument, do not get water or other foreign agents into

the probe.

Cleaning

To ensure optimum performance, it is important to keep the probe jaw mating surfaces clean at all times.

Failure to do so may result in error in readings. To clean the probe jaws use a very fine sand paper (fine

600) to avoid scratching the jaw, then gently clean with a soft, oil cloth.

REPAIR AND CALIBRATION

You must contact our Service Center for a Customer Service Authorization number (CSA#). This will ensure

that when your instrument arrives, it will be tracked and processed promptly. Please write the CSA# on the

outside of the shipping container.

Chauvin Arnoux

, Inc. d.b.a. AEMC

15 Faraday Drive • Dover, NH 03820 USA

(800) 945-2362 (Ext. 360) • (603) 749-6434 (Ext. 360) • [email protected]

(Or contact your authorized distributor)

NOTE: All customers must obtain a CSA# before returning any instrument.

TECHNICAL AND SALES ASSISTANCE

If you are experiencing any technical problems, or require any assistance with the proper use or application

of this instrument, please contact our technical hotline:

(800) 945-2362 (Ext. 351) • (603) 749-6434 (Ext. 351) • [email protected]

LIMITED WARRANTY

The current probe is warranted to the owner for a period of two years from the date of original purchase

against defects in manufacture. This limited warranty is given by AEMC

from whom it was purchased. This warranty is void if the unit has been tampered with, abused or if the

defect is related to service not performed by AEMC

Full warranty coverage and product registration is available on our website at:

www.aemc.com/warranty.html.

Please print the online Warranty Coverage Information for your records.

Instruments

Instruments, not by the distributor

Instruments.

99-MAN 100077.v8 02/18

AC Current Probe

Model JM835A

User Manual

DESCRIPTION

The JM835A (Catalog #2110.84) is designed for use in industrial environments. The "squared" jaws permit

multiple conductor or bus bar positioning. The current output makes it the perfect tool for measurement

with DMMs, recorders, power and harmonic meters. The Model JM835A is compatible with any AC

Ammeter, multimeter, or other current measuring instrument with an input impedance lower than 1Ω. To

achieve the stated accuracy, use the JM835A with the DMM having an accuracy of 0.75%.

WARNING

These safety warnings are provided to ensure the safety of personnel and proper operation of the

instrument.

• Read the instruction manual completely and follow all the safety information before attempting to

use or service this instrument.

• Use caution on any circuit: Potentially high voltages and currents may be present and may pose

a shock hazard.

• Read the Safety Specifications section prior to using the current probe. Never exceed the

maximum voltage ratings given.

• Safety is the responsibility of the operator.

• ALWAYS connect the current probe to the display device before clamping the probe onto the

sample being tested.

• ALWAYS inspect the instrument, probe, probe cable, and output terminals prior to use. Replace

any defective parts immediately.

• NEVER use the current probe on electrical conductors rated above 600V in overvoltage category

III (CAT III). Use extreme caution when clamping around bare conductors or bus bars.

INTERNATIONAL ELECTRICAL SYMBOLS

This symbol signifies that the current probe is protected by double or reinforced insulation. Use

only factory specified replacement parts when servicing the instrument.

This symbol signifies CAUTION! and requests that the user refer to the user manual before

using the instrument.

This is a type A current sensor. This symbol signifies that application around and removal

from HAZARDOUS LIVE conductors is permitted.

DEFINITION OF MEASUREMENT CATEGORIES

Cat. IV: For measurements performed at the primary electrical supply (<1000V) such as on primary

overcurrent protection devices, ripple control units, or meters.

Cat. III: For measurements performed in the building installation at the distribution level such as on

hardwired equipment in fixed installation and circuit breakers.

Cat. II: For measurements performed on circuits directly connected to the electrical distribution system.

Examples are measurements on household appliances or portable tools.

RECEIVING YOUR SHIPMENT

Upon receiving your shipment, make sure that the contents are consistent with the packing list. Notify your

distributor of any missing items. If the equipment appears to be damaged, file a claim immediately with the

carrier and notify your distributor at once, giving a detailed description of any damage.