Benning IT 110 - Display Contrast Adjustments

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4.5 Display contrast adjustments

When low-level backlight is activated press and hold BACKLIGHT key until the Display contrast

adjustment menu is displayed.

Fig. 4.9: Contrast adjustment menu

Use the and keys to adjust the contrast level. Press the TEST key to accept the new setting.

Main Page

Table of Contents2
Preface5
Safety and Operational Considerations6
Warnings and Notes6
Batteries8
Charging9
Precautions on Charging of New Battery Cells or Cells Unused for a Longer Period9
Standards Applied10
Description of the BENNING IT 110/ BENNING IT 120 B11
Front Panel11
Connector Panel12
Back Panel12
Bottom View13
Carrying the BENNING IT 110/ BENNING IT 120 B14
BENNING IT 110/ BENNING IT 120 B Set and Accessories14
Standard Set14
Optional Accessories15
Operation of the BENNING IT 110/ BENNING IT 120 B16
Meaning of Symbols and Messages on the Display of the BENNING IT 110/ BENNING IT 120 B16
Online Voltage and Output Terminal Monitor16
Message Field - Battery Status16
Message Field - Measurement Warnings/Messages17
Result Field18
Other Messages18
Sound Warnings18
Function and Parameter Line19
Selecting Measurement Function/Sub-Function19
Setting Measurement Parameters and Limits19
Help Menu19
Setup Menu20
Supply System Setup20
Prospective Short/Fault Current Scaling Factor Adjustment20
Language Selection21
Communication Port Settings (BENNING IT 120 B Only)21
Activating/ Deactivating the COMMANDER (Switchable Probe Tip)21
Recalling Original Settings22
Display Contrast Adjustments23
Measurements24
Insulation Resistance24
Resistance/ Continuity Testing25
Lowω Resistance Measurement25
Continuity27
Testing Rcds29
Limit Contact Voltage29
Nominal Differential Trip-Out Current29
Multiplier of Nominal Residual Current29
RCD Type and Test Current Starting Polarity29
Testing Selective (Time-Delayed) Rcds30
Contact Voltage30
Trip-Out Time32
Trip-Out Current33
Autotest34
Loop Impedance and Prospective Short-Circuit Current (Zs/ Ik)37
Loop Impedance (Loop Resistance, Zl)37
Loop Impedance (Zsrcd)39
Line Impedance and Prospective Short-Circuit Current40
Phase Rotation (Phase Sequence)41
Voltage and Frequency42
Testing the PE Terminal43
Resistance to Earth (BENNING IT 120 B Only)45
TRUE RMS Current (BENNING IT 120 B Only)46
Illumination (BENNING IT 120 B Only)47
Working with Measurement Results (BENNING IT 120 B)49
Saving Measurement Results49
Recalling Measurement Results50
Deleting Measurement Results51
RS232 and USB Communication (BENNING IT 120 B Only)54
BENNING IT 120 B-PC Software54
Maintenance56
Replacing Fuses56
Cleaning56
Periodic Calibration56
Service56
Technical Specifications57
Insulation Resistance57
Resistance/ Continuity Testing57
Lowω Resistance Measurement57
Continuity58
Rcd58
General Data58
Contact Voltage58
Trip-Out Time59
Trip-Out Current59
Loop Impedance and Prospective Short-Circuit Current60
Line Impedance and Prospective Short-Circuit Current61
Phase Rotation (Phase Sequence)61
Voltage and Frequency61
Online Voltage Monitor61
Resistance to Earth62
TRUE RMS Current62
Illumination62
Illumination (BENNING Luxmeter Type B)62
General Data63
Appendix A Fuse Base Tables64
Fuse Base Tables65
Appendix B IT Systems69
Applicable Standards69
Basic Information69
Measuring Guidelines70
Voltage71
Line Impedance71
FI/RCD Testing71
First Fault Leakage Current (ISFL)72
Technical Data73
First Fault Leakage Current (ISFL)73
Appendix C Power Supply Network with Lower Voltage74
Applicable Standards74
Basic Information74
Measuring Guidelines74
Voltage75
FI/RCD Testing75
Line Resistance and Prospective Short-Circuit Current75
Loop Resistance and Prospective Fault Current76
Technical Data76
FI/RCD Testing76
Loop Resistance and Prospective Fault Current78
Line Resistance and Prospective Short-Circuit Current79

Benning IT 110 - Display Contrast Adjustments

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