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7.2 Limiting V alues
If desired, the factory settings of the limiting values can be changed. The setting will remain valid
until mains switch-off! For each restart, the BENNING ST 750 A Appliance T ester will be reset to
the factory settings! The factory settings of the limiting values comply with the applicable VDE regu-
lationsand canbetakenfrom chapter20.2"FactorySettings, Setup,LimitingV alues". Settingcan
be done from each start menu and from each measuring type menu. For this purpose, successively
select the following: <Setup> / <Limiting V alues>.
Select the desired tab, select the value and press <Input> (display input key-
board opens). Delete and correct the old value by means of the <Clear> or <<-->.
Inthe"LimitingValuesSetup"menu,thedeviatingvalue will behighlightedinred colour .Returnto
the start menu by pressing <Next> / <Save> / <Y es> / <Back>.
RPE data (resistance measurement of the PE conductor):
RPE VDE 701-702 = resistance for a cable length of 5 m and 1.5mm²
RPE VDE 751 = resistance for a cable length of 5 m and 1.5mm²
RPE per 7.5 m line length = additional resistance per 7.5 m line length
Line length = total length of the device supply line
Cross-section = cross-sectional area of the device supply line
RInsu data (insulation measurement):
RInsu-1 VDE 701-702 = insulating resistance of primary to PE
RInsu-1 VDE 701-702 heating elements = insulating resistance of primary to PE
RInsu-2 / RInsu-3 VDE 701-702 = insulating resistance of secondary to PE / primary to secondary
RInsu-1 VDE 701-702 Ua (SELV/PEL V) = insulating resistance of primary to PE (SELV devices)
RInsu-1 VDE 751 = insulating resistance primary to PE
RInsu-2 VDE 751 = insulating resistance of secondary to PE
RInsu-3 VDE 751 = insulating resistance of primary to applied part
T esting voltage for primary to PE = testing voltage for primary to PE
T esting voltage for secondary to PE = testing vo ltage for secondary to PE
T esting voltage for primary to secondary = testing voltage for primary to secondary
IAL data (alternative leakage current measurement):
IPE VDE 701-702 protection class I = PE alternative leakage current
ILeak VDE 701-702 protection class II = alternative leakage current of accessible parts
ILeak VDE 751 protection class I = PE alternative leakage current
ILeak VDE 751 protection class I = alternativ e leakage current of accessible parts
Patient leakage current BF = alternative patient leakage current of applied part, type BF
Patient leakage current CF = alternativ e patient leakage current of applied part, type CF
ILeak data (leakage current measurement):
IPE VDE 701-702 protection class I = PE leakage current
ILeak VDE 701-702 protection class II = leakage current of accessible parts
ILeak VDE 751 protection class I = PE leakage current
ILeak VDE 751 protection class I = leakage c urrent of accessible parts
Patient leakage current BF = patient leakage current of applied part, type BF
Patient leakage current CF = patient le akage current of applied part, type CF
ICont data (contact current measurement):
ICont VDE 701-702 = contact current to PE
Functional data (functional measurement):
IPE VDE 701-702 = PE leakage current (differential current measurement)
ICont VDE 701-702 = contact current to PE (differential current measurement)
IPE VDE 751 = PE leakage current (differential current measurement)
ICont VDE 751 = contact current to PE (differential current measurement)
Ua data (measurement on PEL V / SELV devices):
Max. output voltage = max. outp ut voltage for PEL V / SEL V devices
Cable data (cable measurement):
Line length = simple line length
Cross-section = cross-sectional area of the conductor
Conductor qty. = conductor quantity (for total length)
7.3 System Settings
Select <Setup> / <System Settings> to modify and permanently save the baud rate, parity , data
bits and stop bits e.g. for barcode scanners, RFID readers, PCs and printers.
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RPE data (resistance measurement of the PE conductor):
RPE VDE 701-702 = resistance for a cable length of 5 m and 1.5mm²
RPE VDE 751 = resistance for a cable length of 5 m and 1.5mm²
RPE per 7.5 m line length = additional resistance per 7.5 m line length
Line length = total length of the device supply line
Cross-section = cross-sectional area of the device supply line
RInsu data (insulation measurement):
RInsu-1 VDE 701-702 = insulating resistance of primary to PE
RInsu-1 VDE 701-702 heating elements = insulating resistance of primary to PE
RInsu-2 / RInsu-3 VDE 701-702 = insulating resistance of secondary to PE / primary to secondary
RInsu-1 VDE 701-702 Ua (SELV/PEL V) = insulating resistance of primary to PE (SELV devices)
RInsu-1 VDE 751 = insulating resistance primary to PE
RInsu-2 VDE 751 = insulating resistance of secondary to PE
RInsu-3 VDE 751 = insulating resistance of primary to applied part
T esting voltage for primary to PE = testing voltage for primary to PE
T esting voltage for secondary to PE = testing vo ltage for secondary to PE
T esting voltage for primary to secondary = testing voltage for primary to secondary
IAL data (alternative leakage current measurement):
IPE VDE 701-702 protection class I = PE alternative leakage current
ILeak VDE 701-702 protection class II = alternative leakage current of accessible parts
ILeak VDE 751 protection class I = PE alternative leakage current
ILeak VDE 751 protection class I = alternativ e leakage current of accessible parts
Patient leakage current BF = alternative patient leakage current of applied part, type BF
Patient leakage current CF = alternativ e patient leakage current of applied part, type CF
ILeak data (leakage current measurement):
IPE VDE 701-702 protection class I = PE leakage current
ILeak VDE 701-702 protection class II = leakage current of accessible parts
ILeak VDE 751 protection class I = PE leakage current
ILeak VDE 751 protection class I = leakage c urrent of accessible parts
Patient leakage current BF = patient leakage current of applied part, type BF
Patient leakage current CF = patient le akage current of applied part, type CF
ICont data (contact current measurement):
ICont VDE 701-702 = contact current to PE
Functional data (functional measurement):
IPE VDE 701-702 = PE leakage current (differential current measurement)
ICont VDE 701-702 = contact current to PE (differential current measurement)
IPE VDE 751 = PE leakage current (differential current measurement)
ICont VDE 751 = contact current to PE (differential current measurement)
Ua data (measurement on PEL V / SELV devices):
Max. output voltage = max. outp ut voltage for PEL V / SEL V devices
Cable data (cable measurement):
Line length = simple line length
Cross-section = cross-sectional area of the conductor
Conductor qty. = conductor quantity (for total length)
7.2 System Settings
Select <Setup> / <System Settings> to modify and permanently save the baud rate, parity , data
bits and stop bits e.g. for barcode scanners, RFID readers, PCs and printers.
see chapter 16 to 18
<Barcode Scanner>
Thefollowingeldsarereleasedfortheuser:
- setting of baud rate, parity , data bits and stop bits
<RFID Reader>
Thefollowingeldsarereleasedfortheuser:
- setting of baud rate, parity , data bits and stop bits
<PC>
Thefollowingeldsarereleasedfortheuser:
- setting of baud rate, parity , data bits and stop bits
<Printer>
Thefollowingeldsarereleasedfortheuser:
- setting of baud rate, parity , data bits and stop bits
7.2.1 System Data
The device version and serial number are listed under <Setup> / <System Settings> /
<System Data>. The duration of the individual test procedures (standard = 5 sec.) is determined by
the test time. The safety shut-off terminates a test procedure (standard = 30 sec.).
Thecontact surfacesbetween connectorshave onlylow transitionresistances.Todene thetransi-
tion resistance, here the assumable resistance value is entered (standard = 1Ω). Moreover, it is
denedwhetheraprinterorabarcodescannerisconnectedtotheserialinterface.
Mains pole reversal ON: On the test socket, L and N are interchanged.
see chapter 16 to 18
<Barcode Scanner>
Thefollowingeldsarereleasedfortheuser:
- setting of baud rate, parity , data bits and stop bits
<RFID Reader>
Thefollowingeldsarereleasedfortheuser:
- setting of baud rate, parity , data bits and stop bits
<PC>
Thefollowingeldsarereleasedfortheuser:
- setting of baud rate, parity , data bits and stop bits