Gossen MetraWatt METRACLIP 62 Bedienungsanleitung

Operating Instructions

METRACLIP62

Clip-On Ammeter

3-349-391-15

2/3.10

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Operating Overview

U: < 300 V !

I: max. 10 A !

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1 Clip guide (+ shield)

2 Clip jaw

3 Clip clearance safety barrier:

Do not reach beyond the safety collar!

4 Button for opening clip

MAX HOLD

key: display max. current measured value

MIN HOLD

key: display min. current measured value

7RANGE UP key: increase measuring range

8POWER key: switch on instrument (LCD test)

/ switch off instrument

9 LCD panel

10 Eyelet for carrying strap

11 ACA key: activate AC measurement

12 DCA key: activate DC measurement

13 RANGE DOWN key: reduce measuring range

14 DATA HOLD key: save measured value

by „freezing“ display

ZERO ADJ

key:

DCA: zero balancing

(activate before each DC measurement

ACA: define reference value

Standard Equipment

1 Clip-on ammeter

1 Immitation leather bag

1 Set of batteries

1 Operating instructions

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Table of Contents Page

1 Safety Precautions ..............................4

1.1 Special Features of the Hall Effect Sensor ........ 6

2 Operation .............................................7

2.1 Initial Start-Up ............................................... 7

2.2 Stipulations for All Measurements ................... 8

2.3 Measuring Leakage Current at Grounded

Conductors .................................................. 10

2.4 Measuring Leakage Current at

Single-Phase or 3-Phase Systems ................ 11

2.5 Measuring Line Current ................................ 12

3 Characteristic Values .........................13

4 Maintenance ......................................16

4.1 Battery Replacement .................................... 16

4.2 Housing ...................................................... 17

1 Safety Precautions

The METRACLIP62 clip-on ammeter has been

manufactured and tested in accordance with

safety regulations IEC 61010-1/EN 61010-1/

VDE 0411-1 and IEC 61010-2-032/

EN 61010-2-032/VDE 0411-2-032.

If used for its intended purpose, the safety of

the user and of the device is assured. The

device may only be operated by properly

trained personnel who are capable of recog-

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GMC-I Messtechnik GmbH 5

nizing the dangers associated with the mea-

surement of electrical current and voltage.

Read the operating instructions completely and

carefully before using the device, and follow all

instructions included therein.

Meanings of symbols on the instrument:

Warning concerning a source of dan

ger

(Attention: observe documentation!)

Continuous, doubled or reinforced

insulation

Indicates EC conformity

Applying the clip to dangerous active

conductors is permitted

The clip-on ammeter may not be used:

• If the battery compartment lid has been

removed

• If visible damage is apparent

• With damaged connector cables

• If it no longer functions flawlessly

• After lengthy periods of storage under

unfavorable conditions (e.g. humidity,

dust, temperature).

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Attention!

Do not perform measurements in the

event of over-ranging!

Current which exceeds the measuring

range may not be measured.

Do not perform measurements at bare

wires!

Do not perform measurements at busbars!

Safe Handling

• The housing and the handles must be free

of dust, grease and moisture.

• The operator’s fingers may not be

extended beyond the safety collar during

measurement.

• Avoid excessive mechanical stress such

as impact and vibration, as well as high

temperatures, moisture and strong

magnetic fields.

•

The battery compartment lid must be

secured with the appropriate Phillips head

screw.

1.1 Special Features of the Hall Effect Sensor

Eliminating the influence of magnetization

The clip-on ammeter METRACLIP62 uses the

hall effect for its measurements. The charac-

teristics of the hall effect are subject to a hys-

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GMC-I Messtechnik GmbH 7

teresis due to magnetization. As a result, the

zero adjustment point for DC measurements

may vary. Open and close the clip jaws several

times in a row and press the ZERO ADJ key prior

to each DC measurement in order to elimitate

this effect. When measuring current conduct-

ing cables, close and open the clip jaws slowly

and firmly in order to avoid any impact on the

sensitive hall effect sensor.

Remedy in the Event of Exceeding the Measuring

Range

If the maximum measurable current has been

exceeded by a large degree, zero balancing

can no longer be effected due to the satura-

tion of the current clip.

Remedy:

➭Turn the measuring instrument on with the

POWER key.

➭Adjust the smallest measuring range with

the RANGE DOWN key (200 mA AC).

➭Close the clip around a conductor with

10 A AC and reduce the current in the

conductor gradually to 0 A. This elimi-

nates magnetic saturation.

2Operation

2.1 Initial Start-Up

Insert the two batteries (see chapter 4.1, page

16.

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2.2 Stipulations for All Measurements

Attention!

In order to prevent damage to the in-

strument and the user, the maximum

input quantities may not be exceeded:

Voltage range 300 V AC/DC,

current range 20 A AC/DC.

Note



Exercise caution when opening and closing

the clip jaws around an active conductor.

Save Measured Value Function – DATA HOLD

During the performance of measurements

under conditions which impair easy reading of

display values, the DATA HOLD key can be

activated in order to freeze the momentary

measured value at the display. The DH symbol

appears at the display.

Before starting any new measurements, the

DATA HOLD key must be activated once again in

order to reset the data hold function.

Display of Extreme Value Function – MAX HOLD / MIN HOLD

In order to indicate the highest (MAX HOLD) or

lowest current measured value (MIN HOLD) dur-

ing a measurement, briefly press the corre-

sponding key before starting the measure-

ment; the symbol MAX-H or MIN-H appears.

During this function, the automatic shutdown

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mode is deactivated. Press the key again to

cancel this function.

Selecting Current Type – ACA / DCA

The measuring instrument is always set to

direct current when switched on. Press the

ACA or DCA key to change to the other current

type.

Zero Balancing or Reference Value Function

– ZERO ADJUST

Zero Balancing for DC measurements DCA

Even if the clip jaws are not closed around a

conductor, measured values are continuously

displayed when the measuring instrument is

set to DC measurement. It is therefore gener-

ally necessary to press the ZERO ADJUST key

after selecting the measuring range and before

starting DC measurements. After pressing the

ZERO ADJ key, the symbol ZERO ADJ is displayed

and 0.0, 0or 0.00 appears on the LCD.

After changing the measuring range or the

current type, the function must be reactivated.

Reference Value for AC measurements ACA

If the ZERO ADJUST key is pressed during an AC

measurement, the measured value is stored

as a reference value and deducted from future

measurements. After pressing the ZERO ADJ.

key, the symbol ZERO ADJ is displayed and

0.0, 0or 0.00 appears on the LCD.

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2.3

Measuring Leakage Current at Grounded

Conductors

➭Turn the measuring instrument on with the

POWER key.

➭Select the current type via the ACA or DCA

key.

➭Set the RANGE UP or RANGE DOWN key to the

appropriate range for the current to be

measured.

Otherwise, set the measuring range

switch to the highest of the three ranges in

order to avoid possible over-ranging.

➭Prior to DC measurements:

Perform zero balancing via the ZERO AD-

JUST key.

➭Close the clip around the current conduct-

ing cable under test as well as around the

current transformer.

➭Read the measured value from the dis-

play.

➭After measurement has been completed:

Remove the clip from the cable and turn

the measuring instrument off by pressing

the POWER key.

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