Cord Test; Tripping Time Measurement Of Rcds; Protective Conductor Current (Direct Measurement Method); Adapters 044140 Or 044141) - Benning ST 725 Notice D'emploi

Resistance to external voltages:
For non-sinusoidal current supply, an additional error has to be considered:
crest factor of > 1.4 to 2.0, additional error + 3.1 %

7.6 Cord test

- measurement of the protective conductor resistance according to 7.1
- measurement of the insulating resistance according to 7.2
- line break testing of the external conductor (L) and the neutral conductor (N)
- short-circuit testing of the external conductor (L) and the neutral conductor (N)

7.7 Tripping time measurement of RCDs

Measuring range
10 ms - 500 ms
Testing current / polarity:
Preset limiting value:
7.8 Protective conductor current (direct measurement method) (optional measuring

adapters 044140 or 044141)

Measuring range
0.25 mA - 9.99 mA
Nominal voltage:
Rated current:
Preset limiting value:

7.9 Voltage measuring on external shock-proof socket

Measuring range
50 V - 270 V
AC
Display:
- voltage between the external conductor (L) and the neutral conductor (N)
- voltage between the external conductor (L) and the ground conductor (PE)
- voltage between the neutral conductor (N) and the ground conductor (PE)
7.10 Limiting values according to DIN VDE 0701-0702 and ÖVE/ ÖNORM E 8701-1
Note:
Limiting values preset in bold are stored in the BENNING ST 725.
For cords with rated current ≤ 16 A:
≤ 0.3 Ω up to a length of 5 m, per
Protective
conductor
resistance
R
PE rents the calculated ohmic resistance
Insulating ≥ 2 MΩ for proving safe disconnec-
resistance
R ≥ 0.3 MΩ for devices with heating
ISO
Protective
conductor
current
1 mA/ kW for devices with heating
I / I
EA LEAK
Contact
current
I / I
EA LEAK
07/ 2018
Resolution
1 V
Protection class I
further 7.5 m: additional 0.1 Ω,
max. 1 Ω,
For cords with higher rated cur-
value applies.
≥ 1 MΩ
tion (transformer)
element
≤ 3.5 mA
on conductive parts with PE con-
nection
elements P > 3.5 kW
≤ 0.5 mA
on conductive parts without
PE connection
BENNING ST 725
max. 276 V
Resolution
1 ms
30 mA sinussoidal/0° and 180°
150 mA sinussoidal /0° and 180°
200 ms (30 mA), 40 ms (150 mA)
Resolution
0.01 mA
3 x 400 V ± 10 % (as mains feed-in)
16 A or 32 A
3.5 mA
Measuring accuracy
5 % ± 2 digits
Protection class
≥ 2 MΩ
(protection class II),
≥ 0.25 MΩ
(protection class III)
≤ 0.5 mA
on conductive parts
without
PE connection
Measuring accuracy
5 % ± 2 digits
Measuring accuracy
5 % ± 2 digits
Overload protection
300 V
Line test
II, III
(see protection

≤ 0,3 Ω
class I)
≥ 1 MΩ
26