Ht-instruments MACROTEST 5035 Manual de usuario descargar pdf (Pagina 43)

MACROTEST 5035

EN - 42

3. The key U

▼ permits to select one of the following limit values for the

contact voltage (which can be shown cyclically when pressing the key):

 50V (default)

 25V.

4. Press the START/STOP key. The instrument starts the test.



At the end of the test the instrument

emits a double sound signal

indicating that the test is correctly

terminated and displays the values

alongside.

RCD LOOP

49 Ω

P-PE

223 V 4 A

Note: The test permits to effect the measurement of Global Earth Resistance without

causing RCD tripping in case of RCD with rated I

∆N

higher than or equal to 0.03A.

Formula for the calculation of the prospective short circuit current:

I =

where U

= phase to earth voltage 127V if 100V < V

meas

≤ 150V

230V if 150V < V

meas

≤ 265V

= global earth resistance

CAUTION

The display of “Measuring” indicates that the instrument is effecting the

measurement. During this phase do not disconnect the test leads from the

instrument.

SAVING: The tests can be stored pressing the SAVE key twice

(according to paragraph 5.1).

Value of Global

Earth Resistance

expressed in Ω.

Resolution is 1

Ω

Value of phase to

earth voltage

detected during

the measurement.

Resolution is 1V.

Effective value of the phase to earth prospective

short circuit current expressed in Ampere

calculated according to the following formula.

Resolution is 1A.

SAVE

START

STOP

▼

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S.imoim.net 04 Dec 2024 | 14:11:18

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Ht-instruments MACROTEST 5035 Manual de usuario Pagina 43

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