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Benning ST 755+ Operating Manual

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Operating manual
Translation of the German original version

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Summary of Contents for Benning ST 755+

  • Page 1 Operating manual Translation of the German original version...
  • Page 2 General non-discrimination Benning is aware of the importance of language with regard to the gender equality and endeavors to take this into account at all times. To improve readability, we have refrained from consistently using differentiating formulations.

  • Page 3: Table Of Contents

    Operating elements...................... 27 Login ........................... 28 Buttons in the footer ...................... 28 Operating the list view...................... 29 Operating the test view ....................... 31 Operating the Smart menu.................... 33 Functions.............................. 34 Database.......................... 34 Backup copies........................ 35 User administration ...................... 36 Expert settings ........................ 36 5284 / 08/2023 en BENNING ST 755+ / ST 760+...
  • Page 4 PRCD .......................... 47 7.7.13 Power distributors ....................... 48 Remote control........................ 48 Optional accessories...................... 49 7.9.1 Three-phase testing with the BENNING MA 4 .............. 49 7.9.2 Three-phase testing with the BENNING MA 3 .............. 50 7.9.3 Three-phase testing with the BENNING MA 2-16............... 50 7.9.4 Single-phase and three-phase testing with the leakage current clamp....... 51 7.9.5...
  • Page 5 Cleaning the device...................... 97 10.4 Calibrating the device...................... 97 10.5 Installing an update (GUI, firmware) ................... 98 10.6 Recovering the password.................... 99 Technical data............................ 100 Disposal and environmental protection .................... 101 Appendix .............................. 102 13.1 Automatic test procedures .................... 102 5284 / 08/2023 en BENNING ST 755+ / ST 760+...
  • Page 6 Factory settings and measured values – Times.............. 116 13.5 Measuring methods...................... 117 13.6 Remote control........................ 118 13.6.1 Remotely controlling the device via the PC............... 118 13.6.2 Remotely controlling the device using a smartphone or tablet.......... 119 Index ............................... 120 BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...
  • Page 7 Table of figures Table of figures Figure 1 BENNING ST 755+ / BENNING ST 760+ device structure .............. Figure 2 Type plate (exemplary) ........................Figure 3 Screen layout............................ Figure 4 General operation ..........................Figure 5 Test view............................Figure 6 BENNING MA 4 ..........................Figure 7 BENNING MA 3 ..........................
  • Page 8 Table 37 Overview of test procedures according to EN 62353 (VDE 0751‑1) for Class I (1 to 5) / Class II (1 to 2) .............................. 106 Table 38 Test procedures according to EN 60974-4 (VDE 0544‑4) for Class I..........106 BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...
  • Page 9 Table 65 Factory settings of the limits for voltage of the welding circuit test ........... 116 Table 66 Measured values according to measuring specifications – Voltage of the welding circuit test..116 Table 67 Factory settings of the limits for times ....................116 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 10: Introduction

    1.1 Naming convention Introduction The appliance tester BENNING ST 755+ / ST 760+ described here (in the following only referred to as “device”) is intended for the safety testing of electrical test samples (DUTs). The basic versions of the device enable you to perform the following tests and measurements:...

  • Page 11: General Notes

    Information in this operating manual can be changed at any time without prior notice. Benning is not obligated to make amendments to this operating manual or to keep it up to date.

  • Page 12: History

    Please contact our Technical support for technical questions on handling the device. Phone: +49 2871 93-555 Fax: +49 2871 93‑6555 E-Mail: helpdesk@benning.de Internet: www.benning.de Returns management Easily and conveniently use the BENNING returns portal for a quick and smooth returns processing: https://www.benning.de/service-de/retourenabwicklung.html Phone: +49 2871 93-554 E-Mail: returns@benning.de Return address BENNING Elektrotechnik und Elektronik GmbH & Co. KG Retourenmanagement Robert-Bosch-Str.

  • Page 13: Safety

    • IEC / DIN EN 61326‑1 (VDE 0843-20‑1) • IEC / DIN EN 61557-1 (VDE 0413‑1) • IEC / DIN EN 61557-2 (VDE 0413‑2) • IEC / DIN EN 61557-4 (VDE 0413‑4) • IEC / DIN EN 61557-6 (VDE 0413‑6) • IEC / DIN EN 61557-16 (VDE 0413‑16) 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 14: Symbols Used

    (DC) direct voltage or direct current (AC) alternating voltage or alternating current Earth (voltage to earth) Bluetooth WLAN SD memory card USB interface PC Micro‑USB interface Network interface Table 2: Symbols on the device BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 15: Intended Use

    Uses not complying with the intended use include e. g.: – Hardware or software changes without the knowledge and approval of Benning – Use of components, accessories, spare or replacement parts that have not been released and approved for the respective application by Benning –...
  • Page 16 • The device does not work properly in compliance with regulations (e. g. errors during measurements). • The device shows recognisable consequences of prolonged storage under inadmissible conditions. • The device shows recognisable consequences of extraordinary stress due to transport. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 17: Special Types Of Risks

    Even low voltages from 30 V‑AC and 60 V‑DC on can be dangerous to human life! • Please observe relevant regulations on occupational safety and health. • If necessary, use appropriate protective equipment. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 18: Scope Of Delivery

    2.5 Special types of risks Scope of delivery The scope of delivery of the device includes the following components: • 1 x appliance tester BENNING ST 755+ (item no.: 050332) or appliance tester BENNING ST 760+ (item no.: 050334) • 1 x SD memory card ≥ 4 GB (item no.: 10003760) •...
  • Page 19 – Shock-proof plug / coupling, single-phase (item no.: 044131) Measuring adapters for single-phase and three-phase loads: • BENNING MA 4 measuring adapter, (16 A CEE 3-pin, 16 A/32 A CEE 5-pin) for single- phase/three-phase loads with CEE extension cables (item no.: 044162) • Mains connection cable for BENNING MA 4 measuring adapter, 16 A CEE connector – 32 A CEE coupling, 5-pin (item no.: 044163)

  • Page 20: Transport And Storage

    20 K per hour is not exceeded at the storage location. • For optimum storage, the device case is equipped with an automatic pressure valve near the carrying handle on the front of the device case. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 21: Device Description

    9 Test socket 10 Type plate 11 SD memory slot 12 USB‑A interfaces 13 USB Mini-B interface 14 Ethernet interface 15 7" touch display 16 Mains connection cable 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 22: Type Plate

    14 Nominal input voltage [V] 15 Nominal output voltage [V] 16 Nominal input current [A] 17 Nominal output current [A] 18 Protection class 19 Protection category (with device being 20 Barcode open) BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 23: Screen Setup

    Indicates the state of charge of the battery. Memory card Indicates an inserted SD card. Network connection Indicates an existing network connection (LAN, WLAN). Indicates an existing USB connection. Bluetooth Indicates an existing ® Bluetooth  connection. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 24: Table 3 General Symbols And Buttons In The Header

    Footer Various pieces of information and buttons are displayed in the footer. Footer content: • Date and time • Buttons for operation [} page 28] • Version number (GUI) • Device type BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 25: Menu Structure

    Reference to Settings & Help VDE 0544‑4 / EN 60974‑4 Devices with PE (Class I) Devices without PE (Class II) Reference to Settings & Help Settings [} page 26] Help Help texts Logout Table 5: Menu structure – Main menu 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 26: Table 6 Menu Structure - Settings

    Factory settings Templates Test procedures Visual inspection Device templates Balance / calibration ZERO balance Cable calibration Probe calibration Display, time, language Time Date Language Brightness Touch calibration Table 6: Menu structure – Settings BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 27: General Operation

    • Beginning of word with upper case • Permanently upper case (tap and hold the soft key for 2 seconds) Button Starts a test or measurement. (e. g. probe calibration) Table 7: Operating the screen 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 28: Login

    4. Enter the password. Preconfigured default password of the admin user: Benning If the password has been entered incorrectly, the following message appears on the “Registration / login” screen: “Wrong name or password!” In this case, correct your entry and confirm the login again.

  • Page 29: Operating The List View

    3 Smart menu – Device templates (test 4 Smart menu (main menu) sample templates) 5 Smart menu – Page selection 6 Smart menu – Test standard selection (exemplary) (exemplary) 7 Button in the footer (exemplary) 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 30: Table 9 Operating The List View

    “Connected – waiting for IP” The device is waiting for an IP address being assigned by DHCP. “Connected” The device has been successfully connected to the network and the connection is active. Table 10: Status messages BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 31: Operating The Test View

    The test duration is reset. Limits “Limits” [} page 60] and “Polarity reversal time” [} page 40] can be changed for the Polarity reversal time duration of the test. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 32: Table 11 Test View Buttons

    • Receiving inspection (VDE 0702) Note Add a comment regarding the test / test sample: Tap the right side of the “Change” line to open an input window for adding comments. Table 12: “Test result” screen BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 33: Operating The Smart Menu

    2. Create a test sample (device). To do this, go to the "Device templates" menu, tap the "Standards" button (note the page selection) and select the corresponding test sample template [} page 37] (quick selection button). If the "Auto-ID" [} page 56] function is not enabled, enter the desired ID. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 34: Functions

    You can create multiple databases. The database name is assigned when a database is created. Afterwards, the database name can only be modified using the PC software (BENNING PC‑WIN ST 750‑760). It is not possible to edit measured values that have been stored. Customer You can create multiple customers for each database.

  • Page 35: Backup Copies

    ST 755 / ST 760, you can transfer the data to the ST 755+ / ST 760+. Forward compatibility The data from the ST 750 can be converted into the database format of the ST 755 / ST 760 / ST 755+ / ST 760+ using the logging software. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 36: User Administration

    The preset limits correspond to the test specifications that have been applicable at the time of printing. Administration and definition of the customer-specific limits shall be at the discretion of the qualified electrician carrying out the work. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 37: Customer-Specific Visual Inspection

    Customer-specific test procedures can be assigned to both newly created test samples and already existing test samples [} page 61]. 7.4.4 Customer-specific device templates The "Customer-specific device templates" [} page 63] menu is intended to manage test sample templates. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 38: Customer-Specific Templates

    The device provides two testing options: The “Automatic test" and the “Manual test". The following chapter provides a brief insight into both testing options and an overview of the terminology used. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 39: Automatic Testing

    By tapping the "Overdue test samples" parameter, you can enter a future date that will show you test sample entries that need to be tested until this future date. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 40: Manual Testing

    Delay times from 0 to 60 000 ms are admissible. The polarity reversal time remains active only for the duration of the test. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...
  • Page 41 “All OK", or for each question with "OK", "F" for error or “N.A." for not available. Customer-specific visual inspection: The customer-specific visual inspection offers you the possibility to formulate customer-specific questions and checks. The customer-specific visual inspection is structured like the extended visual inspection. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 42: Device Information

    • Testing current: 0.6 A‑AC or 10 A‑AC • Test frequency: 50 Hz When exceeding the limit [} page 111], it has to be checked whether other limits have to be observed due to product standards or manufacturer specifications. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 43: Insulating Resistance

    2. Insulating resistance measurement between secondary side and the equipment body 3. Contact current measurements of the secondary voltage outputs (except for Class III) 4. Measurement of the open-circuit voltage / output voltage. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 44: Protective Conductor Current

    [} page 86]. For this purpose, the following measuring methods may be used: • Direct current measuring method (direct measuring method) • Differential current measuring method • Alternative leakage current measuring method BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 45: Patient Leakage Current (Medical Electrical Devices)

    Leak Table 18: Leakage current measurement (test standard and protection class) The functional test of three-phase devices can be carried out using the BENNING MA 2-16 / MA 4 measuring adapter. Input voltage, input current as well as effective and apparent power cannot be measured. If necessary, performance data of the measuring adapter are displayed, but not those of the test sample.

  • Page 46: Cable Continuity Test

    Class I Class II The voltage of the welding circuit (open-circuit voltage) is tested to check for compliance with the specifications regarding the rated voltages of test samples according to VDE 0544‑4 [} page 93]. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 47: Contact Current Of The Welding Circuit

    AC / DC / pulsating universal direct currents current- sensitive Tests Tripping current at 0° and 180° Tripping times Cont Tapping the TRIP Interrupting the L conductor Interrupting the N conductor Interrupting the PE conductor 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 48: Power Distributors

    • Remotely controlling the device via WLAN using a smartphone or tablet [} page 119] • Remotely controlling the device via LAN using a PC [} page 118] Please note that it is not possible to use the device via WLAN and LAN simultaneously. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 49: Optional Accessories

    7.9 Optional accessories Optional accessories 7.9.1 Three-phase testing with the BENNING MA 4 The BENNING MA 4 serves as a measuring adapter for testing three-phase test samples and supports the following measurements (active): • Protective conductor resistance • Insulating resistance • Functional test and phase sequence test of cables •...

  • Page 50: Three-Phase Testing With The Benning Ma 3

    Functions 7.9 Optional accessories 7.9.2 Three-phase testing with the BENNING MA 3 The BENNING MA 3 serves as a measuring adapter for testing three-phase test samples and supports the following measurements (passive): • Protective conductor resistance • Insulating resistance • Functional test and phase sequence test of cables •...

  • Page 51: Single-Phase And Three-Phase Testing With The Leakage Current Clamp

    Single-phase and three-phase testing with the leakage current clamp The leakage current clamps BENNING CM 9-1 and CM 9-2 are intended for partial testing of single-phase and three-phase test samples and support the following measurements: • Protective conductor current (direct current and differential current measuring methods) Class I...
  • Page 52 (automatic and manual tests according to VDE). Instead of entering the test sample identification number manually, the identification number or barcode is scanned using the barcode scanner by pressing a button. The identification number will be entered automatically. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 53: Rfid Scanner (Optional)

    (automatic and manual tests according to VDE). Instead of entering the test sample identification number manually, the identification number is scanned using the RFID scanner. The identification number will be entered automatically. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 54: Printer (Optional)

    “Print” button on the “Test result” screen after having completed an automatic or manual test procedure to print out the test report on thermographic paper. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 55: Keyboard (Optional)

    1. Put the keyboard into operation. To do this, follow the instructions given in the operating manual of the wireless keyboard. 2. Switch on the device. 3. Plug the USB dongle of the USB keyboard into a USB-A port of the device. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 56: Configuration

    ON = Enables the custom test procedures. OFF = Hides the custom test procedures when the standard test procedures are enabled. Polarity testing extension ON = Enables the polarity reversal test for extension cables. cable BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 57: Table 20 Setting Options For System Data

    • Print serial number (ON/OFF) • Print barcode (ON/OFF) (only possible with PT 2) Test label Dimensions Setting the parameters for test labels (only necessary if the Benning standard roll is not used). The following parameters can be set if "Test label Dimensions" is enabled (ON): •...

  • Page 58: Setting The Device Data

    Can only be changed if DHCP is disabled. Subnet mask Standard gateway WLAN networks Manages the WLAN networks and connection establishment. Remote control Enables remote access from the end device or PC to the device. Table 21: Network settings BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 59: Establishing A Connection Via Wlan

    If the connection fails, take the following corrective measures: ® – “Disconnect” the Bluetooth connection. ® – “Delete” the Bluetooth connection. – “Search” again for the barcode scanner. – “Connect” the barcode scanner again. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 60: Managing The Expert Settings

    To reset the temporarily changed limits to the default values, tap the “Reset” button. To permanently save the changed limits as new default limits for manual and customer-specific test procedures, tap the “Overwrite” [} page 28] button. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 61: Creating A Customer-Specific Visual Inspection

    Requirements • You are logged on to the device as a user with admin status. Menu “Settings > Expert settings > Customer-specific test procedures” Setting options • New (create) • Change • Copy • Delete 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 62: Table 22 "Test Procedure" Screen

    Cable Enables / disables the continuity test. Enables / disables the output voltage measurement. PRCD Selects the PRCD type. PRCD current intensity Selects the tripping current of the PRCD. Table 22: “Test procedure” screen BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 63: Managing Customer-Specific Device Templates (Test Sample Templates)

    • Templates (test procedures, visual inspections, test sample templates) have already been created. • You are logged on to the device as a user with admin status. Menu “Settings > Expert settings > Templates > Test procedures / Visual inspection / Device templates” 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 64: Managing A User

    The "User administration" menu is intended to manage user data and access rights. Requirements • You are logged on to the device as a user with admin status. Menu “Settings > User administration” Setting options • New (create) • Change • Copy • Delete BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 65: Managing A Database

    2. Select the desired database. To do this, tap the line and confirm by tapping the “OK” button. The database now is selected. This is displayed in the status display of the database. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 66: Managing Test Samples

    Limits are specified in the test procedure. (administrator) Visual inspection Select the visual inspection [} page 41]: • Standard visual inspection • Advanced visual inspection • Customer-specific visual inspection Test interval Specify the test interval in months. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 67: Change", "Copy" And "Delete" Using The Test Sample As An Example

    4. Enter the desired parameter entry or select one of the existing entries and confirm it with the “Enter” button. 5. Save the change. To do this, tap the “Save” button. The change of the test sample is stored in the database. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...
  • Page 68 2. Tap the “Delete” button in the footer. The query “Do you really want to delete the device ...?” is displayed. 3. Confirm the query. The test sample is deleted from the database. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 69: Zero Balance, Cable And Probe Calibration

    Control display Description The calibration / balance was successful. The calibration / balance has failed. Check the plug connections as well as the steps you have taken and start the test again. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 70: Setting The Display, Time And Language

    The following query opens: "Do you want to save the values?" 5. If you confirm the query with "Yes", the calibration is accepted and the device will be restarted. Table 26: Display, time and language BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 71: Testing

    • The jacks "L", "N" and "PE" are connected to the test socket. If mains voltage is applied to the test socket, the connection will be disconnected. • Tap the “Pause” button to interrupt the measurement. During the pause, the test socket remains live! 5284 / 08/2023 en BENNING ST 755+ / ST 760+...
  • Page 72 – If for test samples with heating elements and a power of P > 3.5 kW the value falls below the limit, the test sample still shall be considered to be in proper condition as long as the limit for the protective conductor current is not exceeded. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...
  • Page 73 • The device uses a digital potentiometer to realise the load of the welding device. The load starts as soon as at least half of the limit of the welding voltage has been reached. The load duration is 3 seconds. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 74: Connecting The Safety Measuring Lines

    – Replace defective safety measuring lines. • Protective caps (depending on the overvoltage category) • During tests and measurements, only touch the safety measuring lines in the area intended for your hands. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 75: Figure 11Device View - Jacks

    Make sure that all terminal and plug connections are in perfect contact with the accessible and conductive parts of the test sample. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 76: Automatic Testing

    You can enter an additional comment in the “Note” line. 10. To complete the test procedure, select the desired option (print, discard or save) with the “Test result” test report. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 77: Manual Testing

    7. Tap the “Back” button to go back to the overview of the individual tests. Tap the "Start" button to carry out the individual test again. 8. Carry out all of the desired individual tests. To do this, follow the steps 5 to 7. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...
  • Page 78 11. Select the test type. 12. You can enter an additional comment in the “Note” line. 13. To complete the test procedure, select the desired option (print, discard or save) with the “Test result” test report. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 79: Individual Tests

    PE jack of the device. Use the test probe for measuring on all accessible conductive components of the test sample that are connected to the protective conductor. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 80: Testing The Insulating Resistance

    • Make sure that you know the necessary measuring points. • The test sample is connected according to the connection diagram. Figure 13: Testing the insulating resistance, Class I (connection diagram exemplary for VDE 0701 and VDE 0702, circuit diagram) BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 81: Figure 14Testing The Insulating Resistance, Class

    The shock-proof plug of the test sample is plugged into the test socket of the device. Use the test probe for measuring on the secondary side and on the body of the test sample. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 82: Figure 15Testing The Insulating Resistance, Class

    2. Carry out the first measurement. If there are several measuring points, pause the measurement. To do this, tap the “Pause” button. 3. Apply the test probe / probe tip to the next measuring point. 4. Continue the measurement. To do this, tap the “Next” button. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 83: Testing The Protective Conductor Current

    2. If you are using the direct or differential current measuring method, change the polarity of the mains voltage at the test socket [} page 31]. Test the test sample in all switch positions (test sample functions), if available. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 84: Testing The Contact Current

    The shock-proof plug of the test sample is plugged into the test socket of the device. Use the test probe for measuring on all accessible conductive components of the test sample without PE connection. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 85: Figure 18Testing The Contact Current, Class

    [} page 31]. 4. Use the test probe again to scan all accessible conductive components of the test sample. Test the test sample in all switch positions (test sample functions), if available. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 86: Testing The Device Leakage Current

    The shock-proof plug of the test sample is plugged into the test socket of the device. Use the test probe for measuring on all accessible conductive components and applied parts of the test sample. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 87: Testing The Patient Leakage Current

    • The test sample has passed the insulating resistance test [} page 80]. • The measuring circuit of the setup must be closed. • The test sample is connected according to the connection diagram. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 88: Figure 20Testing The Patient Leakage Current, Class I

    Figure 21: Testing the patient leakage current, Class II (connection diagram for VDE 0751-1, circuit dia- gram, applied parts of type F) BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...
  • Page 89 ‘infinite’ (0), measurement must be completed manually. Result If the value measured with the alternative leakage current measuring method exceeds 1 mA, you must carry out the direct current measuring method. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 90: Functional Test

    3. Change the polarity of the mains voltage at the test socket [} page 31]. 4. Use the test probe again to scan all components. Test the test sample in all switch positions (test sample functions), if available. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 91: Cable Continuity Test

    The measurement is made continuously, so you have enough time to carry out the test. The device measures the line resistance of the conductors (L, N, PE) and all conductors in series. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 92: Testing The Safety Extra-Low Voltage

    3. Check the measured value for compliance with the technical data of the test sample. Please note that a battery voltage must be applied for the test sample to correctly switch through an output voltage. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 93: Testing The Voltage Of The Welding Circuit

    The shock-proof plug of the test sample is plugged into the test socket of the device. Use the test probes for measuring with correct polarity between both poles on the secondary side of the test sample. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 94: Testing The Contact Current Of The Welding Circuit

    The shock-proof plug of the test sample is plugged into the test socket of the device. Use the test probe for measuring on both poles of the secondary side of the test sample. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 95: Testing Of Prcds

    Connection between test socket, test sample and IEC socket of the device. Procedure 1. Start the test. 2. Check the measured value for compliance with the technical data of the test sample. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 96: Maintenance

    If you want to clean the device, make sure first that the device is free of voltage. Procedure 1. Remove the device from the measuring point. 2. Disconnect the safety measuring lines from the device. 3. Switch off the device. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 97: Cleaning The Device

    10.4 Calibrating the device Benning guarantees compliance with this technical and accuracy specifications stated in this operating manual for the first 12 months after the delivery date. To maintain accuracy of the measuring results, make sure that the device is recalibrated in annual intervals by the BENNING Service [} page 12].

  • Page 98: Installing An Update (Gui, Firmware)

    10. The device unzips the “.zip” file and checks whether the available update is more recent than the installed firmware and GUI. Do not switch off the device during the update process. Wait until the device has installed the update completely. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 99: Recovering The Password

    – User level – Index Procedure 1. Tap the “Forgotten?” button on the “Registration / login" screen. The “Forgot password...” screen opens. 2. Follow the instructions on the display. 3. Create a new password [} page 64]. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 100: Technical Data

    (remove the batteries from the device) Ambient temperature -20 … 60 °C (do not permanently expose the device to sunlight) Max. relative air humidity (linearly decreasing, 80 % at 30 °C non-condensing) 60 % at 40 °C Table 28: Technical data BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 101: Disposal And Environmental Protection

    At the end of product life, dispose of the unserviceable device and the batteries via appropriate collecting facilities provided in your community. Packaging Please keep the original packaging for later dispatch (e. g. for calibration). 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 102: Appendix

    Shock-proof cable with probe (600 mA), R (500 V), cable (line length Insu‑1 500 V 5 m / line cross-section 1.5 mm² / number of Insu conductors = 3 / resistance value per line 0.3 Ω, for line tests of shock-proof cables BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 103: Table 29 Test Procedures According To En 50678 (Vde 0701) And En 50699 (Vde 0702) For Class I

    Insu‑IN Insu‑OUT (diff.), PRCD 2‑pin (30 mA) PRCD 3-pin (500 V), R (500 V), I (diff.), PRCD Insu-IN Insu‑OUT 3‑pin (30 mA) Table 29: Test procedures according to EN 50678 (VDE 0701) and EN 50699 (VDE 0702) for Class I 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 104: Table 30 Overview Of Test Procedures According To En 50678 (Vde 0701) And En 50699 (Vde 0702) For Class I (1 To 16)

    Devices of Class II with R 250 V R (250 V), functional test with I Insu Insu-1 Cont (differential current measuring method) Devices of Class II without R Functional test with I (differential current Insu Cont measuring method) BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 105: Table 35 Test Procedures According To En 62353 (Vde 0751-1) For Class I

    (600 mA), R (500 V), R (250 V), Insu‑1 Insu‑2 (500 V), I (diff.), Insu‑3 Leak (alt., type B), functional test with I (dir.) PLeak Leak Table 35: Test procedures according to EN 62353 (VDE 0751‑1) for Class I 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 106: Table 37: Overview Of Test Procedures According To En 62353 (Vde 0751-1) For Class I (1 To 5) / Class Ii

    (500 V), Insu‑1 Insu‑2 Insu‑3 (dir.), functional test with I (diff.), U Cont weld. Cont a weld. (max. 80 V‑AC / max. 80 V‑DC / max. peak value 113 V) Table 39: Test procedures according to EN 60974-4 (VDE 0544‑4) for Class II BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 107: Table 40 Overview Of Test Procedures According To En 60974-4 (Vde 0544-4) For Class I (1 To 3)

    > 3.5 kW: ≥ 0.3 MΩ Measuring the protective ≤3.5 mA on conductive components with conductor current PE connection: 1 mA/ kW to max. 10 mA for devices with heating elements and a total power of more than 3.5 kW 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 108: Manual Test Procedures According To En 62353 (Vde 0751-1)

    LN to secondary type F: ≥ 70.0 MΩ LN to secondary type F: ≥ 70.0 MΩ excluded in the accompanying Secondary to PE type F: Secondary to PE type F: documents according ≥ 70.0 MΩ ≥ 70.0 MΩ to the manufacturer's specifications. Measuring the leakage currents BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 109: Manual Test Procedures According To En 60974-4 (Vde 0544-4)

    Mains circuit to welding circuit: Mains circuit to welding circuit: resistance ≥ 5.0 MΩ ≥ 5.0 MΩ Welding circuit to protective Mains circuit to accessible conductor circuit: ≥ 2.5 MΩ surfaces: ≥ 5.0 MΩ Mains circuit to protective conductor circuit: ≥ 2.5 MΩ 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 110: Test Standards

    • Portable electrical • Portable arc welding devices • Portable medical equipment electrical devices / • Electrical equipment of systems non-electrical devices • Portable electrical protective devices (PRCDs) Table 44: Overview of test standards BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 111: Factory Settings And Measured Values

    Table 46: Factory settings of the limits for protective conductor resistance tests (conductor 5 m, 1.5 mm Parameter Value Testing current 600 mA‑AC ±30 % at 0 … 5 Ω 10 A‑AC ±30 % at 0 Ω Testing voltage approx. 8 V‑AC 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 112: Factory Settings And Measured Values - Insulating Resistance Tests

    Table 48: Factory settings of the limits for insulating resistance tests Parameter Value Testing voltage 100 ... 500 V‑DC (-0 % / +25 %) at a testing current of 0 … 1 mA 501 ... 1 000 V‑DC (-12 % / +25 %) at a testing current of 0 … 1 mA BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 113: Factory Settings And Measured Values - Current Measuring Method

    Internal resistance VDE 0701/0702: R  = 1 kΩ (measuring instrument / VDE 0751-1: R  = 1 kΩ probe) VDE 0544: R  = 2 kΩ Table 53: Protective conductor resistance – Alternative leakage current measuring method Parameter Value Measuring range 0.05 ... 25 mA 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 114: Factory Settings And Measured Values - Functional Test

    Line length Line cross-section mm² Number of conductors Resistance per conductor Ω Table 57: Factory settings of the limits for cable continuity test Parameter Value Testing current 600 mA‑AC ±30 % at 0 … 5 Ω BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 115: Factory Settings And Measured Values - Safety Extra-Low Voltage Test

    Tripping time 1 x I nom. Tripping time 5 x I nom. Max. contact voltage Table 63: Factory settings of the limits for PRCD 2-pin, 3-pin, K, S and S+ Parameter Value Testing current 0 … 100 mA, 100 … 1 000 mA 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 116: Factory Settings And Measured Values - Voltage Of The Welding Circuit Test

    Table 66: Measured values according to measuring specifications – Voltage of the welding circuit test 13.4.9 Factory settings and measured values – Times Parameter Value Unit Test times for individual tests Default delay time (mains pole reversal) Table 67: Factory settings of the limits for times BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 117: Measuring Methods

    Prüfpersonen” (Periodic inspections of portable electrical equipment – Expert knowledge for testing personnel): https://publikationen.dguv.de/regelwerk/dguv-informationen/246/wiederkehrende-pruefungen- ortsveraenderlicher-elektrischer-arbeitsmittel-fachwissen-fuer-pruefpersonen DGUV Information 203-071 “Wiederkehrende Prüfungen ortsveränderlicher elektrischer Arbeitsmittel – Organisation durch den Unternehmer” (Periodic inspections of portable electrical equipment – Organisation by the entrepreneur): https://publikationen.dguv.de/regelwerk/dguv-informationen/787/wiederkehrende-pruefungen- elektrischer-anlagen-und-betriebsmittel-organisation-durch-den-unternehme 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 118: Remote Control

    If the connection is not established, check your network settings as well as the access rights of your network. If connection interruptions occur during image transmission, the manufacturer recommends increasing the refresh duration [ms]. BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

  • Page 119: Remotely Controlling The Device Using A Smartphone Or Tablet

    6. Select the created "Device" and tap the “View” button. The connection will be established automatically. If the connection is not established, check your network settings as well as the access rights of your WLAN hotspot. 5284 / 08/2023 en BENNING ST 755+ / ST 760+...

  • Page 120: Index

    Further information  10 Benutzerollen  36 Benutzerverwaltung  64 Zugriffsberechtigung  36 Berührungsstrom  44, 84 Geräteableitstrom  44, 86 Schweißstromkreis  47, 94 Gerätedaten Information  42 Prüflingseigenschaften  58 Grenzwerte Calibrating  97 Cleaning  97 Copyright  2 Datenbank BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...
  • Page 121  44, 83 MA 2-16  50 Schutzleiterwiderstand  42, 80 MA 3  50 Scope of delivery  18 MA 4  49 Securing  16 Maintenance  96 SELV  46 Maintenance schedule  96 Service & Support 5284 / 08/2023 en BENNING ST 755+ / ST 760+...
  • Page 122 Überfällige Prüflinge Überfällige Geräte  39 Uhrzeit  70 Umpolung der Prüfspannung  41 Umpolzeit Netzumpolung  40 Update Firmware  38, 98  38, 98 Verpackung  20 Vorlagen  38, 63 Warning system  13 Warranty  15 WLAN BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...
  • Page 123 Index 5284 / 08/2023 en BENNING ST 755+ / ST 760+...
  • Page 124 BENNING Elektrotechnik und Elektronik GmbH & Co. KG Münsterstraße 135 - 137 D - 46397 Bocholt Phone: +49 2871 93-0 Fax: +49 2871 93-429 Internet: www.benning.de E-Mail: duspol@benning.de BENNING ST 755+ / ST 760+ 5284 / 08/2023 en...

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St 760+

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