Ht-instruments MACROTEST 5035 Manual do Utilizador descarregar pdf (Página 10)

MACROTEST 5035

EN - 9

4. DESCRIPTION OF THE ROTARY SWITCH FUNCTIONS

4.1. LOWΩ: CONTINUITY TEST OF EARTH PROTECTIVE AND EQUALIZING

POTENTIAL CONDUCTORS

The measurement is effected with a test current higher than 200mA and open circuit

voltage ranging from 4 to 24V DC according to EN 61557-2 and VDE 0413 part 4.

CAUTION

Before carrying out the continuity test make sure that there is no voltage at the

ends of the conductor under test.

Turn the switch on LOWΩ position.

Switch on the instrument.

The key FUNC permits to select one of the following measuring modes

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

 Mode AUTO (the instrument carries out two measurements with reversed

polarity R+ and R-, and displays their average value R

avg

). This mode is

recommended for the continuity test.

 Mode R + TIMER (measurement with positive polarity and possibility of

setting the duration time of the test). In this case the operator can set a

measuring time long enough to permit him to move the protective

conductors while the instrument is carrying out the test so detecting any

bad connection.

 Mode R - TIMER (measurement with negative polarity and possibility of

setting the duration time of the test). In this case the operator can set a

measuring time long enough to permit him to move the protective

conductors while the instrument is carrying out the test so detecting any

bad connection.

 Mode CAL (compensation of the resistance of the cables used for the

measurement).

NOTE: If the resistance is lower than 5Ω (including the resistance of the calibration) the

continuity test is effected by the instrument with a current higher than 200mA. If

the resistance is higher than 5Ω the continuity test is effected by the instrument

with a decreasing current.

FUNC

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

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