Benning IT 105 CH Operating Manual page 21

The BENNING IT 105 installation tester is a multifunctional tester for testing electrical installations in com-
pliance with IEC 60364-6 (DIN VDE 0100-600) and EN 50110 (DIN VDE 0105-100) .
The device is intended for the following measurements and tests:
- voltage, frequency and rotary field (phase sequence)
- low-impedance resistance (R
- insulating resistance (R
- residual current protection devices (RCD
- loop impedance (Z
- loop impedance (Z
- Loop impedance (Z
(PFC) and short-circuit current (PSC)
Contents
1. User notes
2. Safety note
3. Scope of delivery and optional accessories
4. Description of installation tester
5. General information
6. Ambient conditions
7. Electrical specifications
8. Measuring with the BENNING IT 105
8.1 Preparations for measuring
8.1.1 Switching the BENNING IT 105 ON/OFF
8.1.2 Testing the battery condition
8.1.3 Test probe with TEST key
8.2 Voltage (V), Frequency (Hz), rotary field (phase sequence)
8.3 Low-impedance resistance (R
8.4 Insulating resistance (R
8.5 Loop impedance (Z
8.5.1 Measurement with high test current (HIGH CURRENT)
8.5.2 Measuring with a low testing current (NO-TRIP)
8.6 RCD test
8.6.1 Tripping time RCD
8.6.2 Tripping time RCD
8.6.3 Tripping current RCD
9. Maintenance
10. Environmental note
1. User notes
This operating manual is intended for qualified technical personnel! Qualified technical

personnel is competent to identify risks and to prevent possible hazards. Improper han-
dling involves the risk of injury!
Warning of electrical danger!

Absolutely observe all safety instructions!
Always observe international, national and - if applicable - regional regulations of electrical engineering.
Relevant knowledge of electrical engineering is absolutely required.
The BENNING IT 105 is intended for making measurements in dry environment (more details in section
6. "Ambient conditions").
The following symbols are used in these operating instructions and on the BENNING IT 105:
03/ 2020
Operating manual
BENNING IT 105
) with a testing current of 200 mA
LOW
) with testing voltage of 250/500/1000 V
ISO
) without RCD tripping
LOOP
)/line impedance (Z
S I
)/ line impedance (Z
S
LOW
)
ISO
) and line impedance (Z
S
(AUTO)
t
(x½, x1, x5)
t
I
BENNING IT 105 CH
), (RCD )
t I
)
) with high testing current and calculation of the fault current
I
) with 200 mA test current
)
I

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