Bedienungsanleitung Benning ST 710 (Seite 23 von 74) (Deutsch, Englisch, Holländisch, Französisch, Polnisch, Schwedisch)

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02/ 2011

BENNING ST 710



Cross-section

Length

1.0 mm² 1.5 mm² 2.5 mm²

5 m 0.1Ω 0.06Ω 0.04Ω

10 m 0.2Ω 0.12Ω 0.08Ω

25 m 0.5Ω 0.3Ω 0.2Ω

50 m 1.0Ω 0.6Ω 0.4Ω

Table 1:

Resistance values of the protective conductor depending on length and cross-section

- After the R

test has been passed, the measurement of the insulating resistance is carried

out automatically.

- Depending on whether the value is higher or lower than the limiting value, a

or a is

indicated next to the R

ISO

symbol.

- After the R

ISO

test has been passed, the external conductor (L) and the neutral conductor

(N) are checked for line breaks and short-circuits. A passed test regarding line breaks and

short-circuits is indicated by a next to the and the "GOOd“ symbol.

- The "PASS" symbol confirms successful testing of the entire testing procedure.

- If the test regarding line breaks and short-circuits has failed, one of the following symbols is

indicated instead of the "GOOd" symbol:

- "OPEN" symbol:

confirms a line break of the external conductor (L) or neutral conductor (N)

- "Short" symbol:

confirms a short-circuit between the external conductor (L) and the neutral conductor (N)

Seegure5a: TestingofdeviceconnectingcableswithIECconnector

Note on measuring the protective conductor resistance:

- Alternatively, the measurement of the protective conductor resistance R

can be carried out

as permanent measurement (max. 3 minutes). For this purpose press the key

for approx.

> 5 sec. until the  symbol appears on the display. Check the connecting line of the test

object by bending it over the entire length in order to detect weak points or a break of the pro-

tective conductor. The BENNING ST 710 continuously records the current measured value

on the display and stores the maximum value in the memory. By pressing the key

again,

the measurement is carried out with reversed polarity. Press the key

again to indicate the

maximum value of R

on the display and to continue the testing procedure as described in

section 8.2.3.1.

8.2.3.2 Testing of cable reels, multiple distributors and extension cables

- Connect the IEC power cord (IEC adapter cable) included in the scope of delivery to the IEC

connector

of the BENNING ST 710.

- Connect the line to be tested to the test socket

and to the shock-proof socket of the IEC

power cord.

- Press the key

to start the automatic testing procedure.

- The further testing procedure corresponds to the testing procedure described in section

8.2.3.1.

Seegure5b: Testingoflines,multipledistributorsandcablereels

8.3 Voltage measurement on external shock-proof socket

- Connect the IEC power cord (IEC adapter cable) to the IEC connector

of the

BENNING ST 710.

- Connect the shock-proof plug to the shock-proof socket to be tested. With the mains voltage

being applied, the voltage measurement will start automatically.

- Depending on the external conductor position (right or left) of the shock-proof socket, the

voltage potentials between the connecting terminals L, N and PE are indicated.

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