CHAUVIN ARNOUX CA-MN93 [9/32] Description

CONTENTS

1. Presentation ...................................................................................... 9

2. Description ........................................................................................ 9

3. Use ..................................................................................................... 9

4. Characteristics ................................................................................ 10

4.1 Reference conditions ............................................................... 10

4.2 Specifications and references for ordering ............................... 10

4.3 Precision and dephasing .......................................................... 11

4.4 Conditions of use ..................................................................... 11

4.5 Dimensions and weight ........................................................... 12

4.6 Compliance with international norms ....................................... 12

5. Maintenance .................................................................................... 12

5.1 Cleaning ................................................................................. 12

5.2 Metrological verification - Repair ............................................. 12

6. Appendix ......................................................................................... 28

1. PRESENTATION

The MN series miniclamps are designed to measure alternating currents up to 10

kHz, on low-powered installations, from 10 mA~ to 240 A ~. They can be used on

any multimeter or oscilloscope for the MN 60. Depending on model (see 4.2) :

single or dual calibre output, alternating current, alternating voltage or direct voltage.

They have dual insulation or reinforced insulation and comply with international

norms, particularly IEC 61010-2-032 “ammeter clamps”. (See 4.6.)

2. DESCRIPTION

(See drawing in 7. Appendix)

➊ Output: sockets or lead (according to model): lead length: 1.5 m and 2 m for

the MN60 model.

➋ Ratio switch for dual calibre models.

➌ The raised arrow on top of the unit indicates the direction of the current flow.

The current is considered to flow in the positive direction when it flows from

the current producer to the current consumer. This clamp orientation is

necessary when measuring power (measuring current in parallel with

voltage).

3. USE

Limit the measuring time between 200 and 240 A : 10 minutes on, followed by 30

minutes off.

With the MN 08 and 09 models, do not clamp a conductor before connecting the

clamp to the corresponding measuring device. Likewise, do not disconnect the

clamp from the measuring appliance when the clamp is still attached to the cable.

n Before connecting the clamp to the multimeter, check that the multimeter has

an appropriate calibre.

n Open the jaws and clamp the cable through which the current you wish to

measure is running. Roughly centre the cable in the jaws. Follow the direction

of the arrow, if so required by the application in question.

n To read the measurement, apply the appropriate reading coefficient (See 4.2

“Input/output ratio”).

NB : for dual calibre models, select the ratio which provides the best resolution

and precision.

CHAUVIN ARNOUX CA-MN93 [9/32] Description

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