Maintenance - Benning 044140 Notice D'emploi

- Otherwise, the measurement of the protective conductor resistance (R
automatic polarity reversal and the highest measured value of both measurements will be
shown on the display 8 .
- After the R test has been passed, the test of the protective conductor current I
PE
carried out as permanent measurement for max. 30 seconds.
- Make sure that the test sample is protected and switch it on.
- Press the -key 7 to finish early the measurement.
- If the protective conductor current is lower than the admissible limiting value, a
shown next to the I
- The overall test is considered to be passed, if "PASS" is shown on the display.
See figure 4: T esting three-phase test objects under operating conditions (test sample
placed on insulated surface)
Note:
- The protective conductor current measurement will be carried out by means of a current
transformer in the protective conductor of the measuring adapter. The test object must be
placed onto an insulated surface. No part of the test object must have a connection to the
earth potential. Otherwise, leakage currents to earth might influence the measuring result.
- When pressing the
BENNING ST 720, the following warning will be shown on the display:
- For measuring the insulating resistance on three-phase test objects, use the optional pas-
sive measuring adapters (CEE coupling/ shock-proof plug, 044122/ 044123).
9.

Maintenance

9.1 Cleaning
Clean the exterior of the housing with a clean dry cloth (exception: special cleaning wipers).
Avoid using solvents and/ or scouring agents for cleaning the measuring adapter.
01/ 2011
symbol.
LEAK
-key 7 without previously connecting the measuring adapter to the
BENNING 044140/ 044141

) will be started with
PE
will be
LEAK
will be
11