Bedienungsanleitung Benning IT 101 (Seite 21 von 142) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Polnisch, Schwedisch)

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02/ 2011

BENNING IT 101



impedance, insulation, polarization index (PI) and dielectric absorption rate

(DAR)

N Rubber protective frame.

5. General information

The BENNING IT 101 is intended for measuring the insulating resistance.

The BENNING IT 101 supports electric safety tests according to DIN VDE 0100,

IEC 60364, VDE 0701-0702, BGV A3, ÖVE/ ÖNORM E8701 and NEN 3140.

Preset limiting values make it easier to evaluate the test.

5.1 General information concerning the insulation measuring instrument

5.1.1 The digital display B for the measurement readings B is a 3½-digit

liquid crystal display with decimal point. The height of the displayed

digits is 15 mm. The largest numerical value which can be displayed is

4000.

5.1.2 The bar graph display B consists of 49 segments and depicts resist-

ance readings on a logarithmic scale.

5.1.3 The polarity indication Q is automatic. Only one polarity with respect to

the socket marked ” - ” is indicated.

5.1.4 The digital display for the test voltage M is a 3½ digit liquid crystal

display with 7 mm high numerals. The largest value which can be

displayed is 1999.

5.1.5

Range overflow of the digital display

is indicated with the symbol ”>” P.

5.1.6 The BENNING IT 101 has an automatic measuring range selection

function (auto ranging).

5.1.7 The BENNING IT 101 is provided with an automatic background light-

ing ("Auto Backlight"). The brightness sensor is located on the top

side of the device

. As soon as the ambient lighting decreases, the

background lighting will switch on automatically.

5.1.8 An acoustic signal (buzzer) will sound once for each valid keystroke

and twice in case of an invalid keystroke.

5.1.9 The secondary function of the rotary switch position can be selected

by means of the key (blue)

. The low-pass filter (LPF) is activated

in switch position V. A compensation (null balance) of the measuring

leads is possible with switch position Ω ( ). The insulating resistance

or leakage current is indicated with switch positions 50 V/ 100 V/ 250 V/

500 V and 1000 V.

5.1.10 The COMP key

activates the comparative function for insulating

resistance measurement.

5.1.11 The STORE/ RECALL key

is intended for storage and call of meas-

ured values.

5.1.12 The key LOCK (latching)

permits continuous measurements of insu-

lating resistance and low-resistance without having to press the TEST

key

repeatedly or to hold it. To switch over to continuous measure-

ments, press the LOCK key and then the TEST key. The “LOCK”

symbol D appears on the display

. When measuring the insulating

resistance, pressing the TEST key continually applies the test voltage

to the measuring point. When measuring low-resistance, pressing the

key TEST continually applies the test current to the measuring point.

The locked state can be terminated by pressing the LOCK key or the

TEST key.



In locked mode (key) the BENNING IT 101 recognizes no

external voltage at the input of the instrument. Make sure that

the measuring point is free of voltage before activating the

locked mode, otherwise the fuse might blow.

The LOCK key activates the measurement of the dielectric absorption

rate (DAR) K and of the polarization index (PI) L.

5.1.13 The green LED

(PASS indicator) lights for the comparative function

(COMP key

), if the measured value exceeds the comparative value

(resistance value).

5.1.14. The TEST key

activates the measuring function for insulating resist-

ance and low-resistance.

5.1.15 The red LED

( high-voltage control indicator) lights up, if a danger-

ous voltage is applied. The warning symbol  R is indicated on the

display

of the BENNING IT 101.

5.1.16 The BENNING IT 101 is switched on and off with the rotary switch J.

The off setting is ”OFF”.

5.1.17 The BENNING IT 101 switches itself off automatically after approx.

20 minutes. In locked mode (“LOCK”) D (continuous measurements)

automatic switch off takes place after 30 minutes. The instrument

switches itself on again automatically when a key is actuated, or the

measuring range selector switch is turned, or a voltage higher than

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