Справочник Пользователя для Benning IT 120 B 044102

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Note:
-  It is useful to deactivate the COMMANDER, if strong sources of interference might affect the 

functioning of the COMMANDER.

The following parameters and settings can be set to initial (factory) values:

-   Test parameters and limit values 
-   Contrast
-   Prospective short/fault current scaling factor
-   Supply system
-   Communication port (BENNING IT 120 B only)

In order to recall the original setting press and hold the 

 key and switch on the instrument. “Hard 

reset” message will be displayed for a while.

Instrument settings, measurement parameters and limits are set to their initial values as follows: 

Contrast

50 %

Prospective short/fault current scaling 
factor

1.00

Supply system

TN/TT

Communication port

RS 232

CONTINUITY

Sub-function: RLOW

LowΩ resistance

High limit resistance value: 2.0 Ω

Continuity

High limit resistance value: 20.0 Ω

INSULATION RESISTANCE

Nominal test voltage: 500 V

Low limit resistance value: 1 MΩ

IMPEDANCE
(Zl)
(Zs)

Fuse type: none selected (F)

Fuse current rating: none selected (A)

Fuse trip-out current: none selected (ms)

RCD

Sub-function: RCD Uc

Contact voltage – RCD Uc

Trip-out time – RCD t

Trip-out current – RCD III

Autotest – RCD AUTO

Nominal differential current: I

∆N

=30 mA

RCD type and test current starting polarity:<

 G 

Limit contact voltage: 50 V
Nominal differential current multiplier: 

×1

LOOP IMPEDANCE

Testing RCDs with nominal differential current ≥ 10 mA

RESISTANCE TO EARTH
(BENNING IT 120 B only)

High limit resistance value: 50 Ω

ILLUMINATION  
(BENNING IT 120 B only)

Low limit illumination value: 300 lux