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Summary of Contents for MEGABRAS DT70KV
- Page 1 Insulating Gloves Tester up to 70,000 V User manual Parts of this manual may differ from your equipment depending on your country, hardware and/or firmware version, and are subject to change without notice. © 2023 MEGABRAS. All rights reserved. 2023-04-27...
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Page 2: Table Of Contents
3.2. Distance ......................11 3.3. Containment ......................11 4. Configurations and settings ..................12 5. Emergency stop and generation lock buttons ..............14 6. Connecting the DT70KV ....................15 7. Putting the glove in the bucket ..................17 8. Operating the equipment .....................18 9. Display messages ......................19 10. -
Page 3: Safety Information
DT70KV Safety information z The User manual and its Safety information must be read and understood before using the equipment z Safety procedures and rules for working near high voltage energized systems must be observed during the use of this equipment. The generated voltages may be dangerous z Never connect or disconnect the test leads while the dielectric tester is running or when the high voltage light is on. -
Page 4: Symbols
Symbols Caution, refer to User manual. Caution, risk of electric shock. Ground. Double insulation (Class II). USB (Universal Serial Bus). Equipment complies with current EU Directives. The rubbish bin with a line through it means that in the European Union, the product must undergo selective disposal for the recycling of electric and electronic material, in compliance with Directive WEEE 2002/96/EC. -
Page 5: Description
DT70KV 1. Description The dielectric tester DT70KV is an instrument specially developed to insulating gloves testing, in accordance with standards ASTM D120, ASTM F496 and IEC 60903 (annex E). It was designed with emphasis on safety, versatility and ease of use. The voltage output is adjustable (according to the glove class), with up to 70 kVDC. -
Page 6: Control Panel Functions
2. Control panel functions All DT70KV buttons, keys, terminals and connections are located on the panel and are easily accessible to the operator. 2.1. Generation unit Communication connection to the Controller Buzzer Unit High Voltage LED (Red) Safety ground terminal... - Page 7 DT70KV Communication connection to the Controller Unit: Intended for the connection of the communication cable specially developed for this application. Correctly connect the cable to prevent malfunction of the dielectric tester. High Voltage LED: It indicates to the operator the presence of high voltage at the HIGH VOLTAGE output.
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Page 8: Control Unit
2.2. Control unit Power cord connector Communication connection to the Generation Unit Fuse Display USB connector Safety ground terminal Result LED (Red or Green) High voltage LED (Red) Keyboard Emergency button On/Off switch Select / adjust control... - Page 9 DT70KV Power cord connector: Intended for the connection of the power cord. Check if the mains supply voltage is compatible with the power supply of the dielectric tester. Fuse: Protection fuse. On/Off switch: Turn on/off the dielectric tester. USB connector: Intended for transfer test data to a computer.
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Page 10: Keyboard (Control Unit)
Navigates between MENU options, adjusts configured parameters. 2.4. Display (control unit) It is on the DT70KV’s alphanumeric LCD display that all information regarding equipment measurements and settings and various messages to the operator will be displayed. Below is an example of the display information, in this case, this is the initial screen of the... -
Page 11: Test Area
DT70KV 3. Test area The DT70KV dielectric tester generates high energy loads to perform the dielectric tests. This generated energy is very dangerous and for that reason it is of extreme importance the correct preparation of the area where the dielectric tester will be used. -
Page 12: Configurations And Settings
4. Configurations and settings This equipment has a MENU for settings and adjustments. To access the MENU, press the Selector / Adjust ( All navigation is performed through the , and all panel keys are disabled, with the exception of the ... - Page 13 DT70KV Below is the navigation map of the menu and the explanation of its options. Menu Sub-menu Description Allows you to define the test standard between: STANDARD IEC 60903 (annex E), ASTM D120-22 and ASTM F496-20 MAXIMUM CURRENT Enable and configure the maximum current of the tests: Maximum current (5 μA to 500 μA)
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Page 14: Emergency Stop And Generation Lock Buttons
5. Emergency stop and generation lock buttons To increase operator safety, the DT70KV has an emergency button on the control unit and a generation lock button on the high-voltage unit. The emergency button is intended to stop the power generation of the dielectric tester and should be used only in case of extreme urgency, such as the entry of person(s) in the test area or the anticipated / accidental activation of the equipment. -
Page 15: Connecting The Dt70Kv
DT70KV 6. Connecting the DT70KV z The procedures below should be made with the control unit disconnected from the power supply for a higher safety z The user manual and its safety precautions must be read and understood before using the dielectric tester... - Page 16 Basic diagram of connection of the cables in the control unit, high voltage and in the element to be tested: The test leads in the drawing are for illustrative purposes only. Power cord Protective grounding cable (generation unit) Interconnection cable High voltage cable Protective grounding cable (control unit) Return cable...
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Page 17: Putting The Glove In The Bucket
DT70KV 7. Putting the glove in the bucket Thick or very thin gloves Thin gloves... -
Page 18: Operating The Equipment
8. Operating the equipment Turn the control unit on with the on / off switch The display of the device will show the message MEGABRAS DT70KV dielectric tester. It will then perform three self-tests and then display the initial screen, informing the currently selected test class, the current date and time. -
Page 19: Display Messages
INVALID TEST The DT70KV limits the output current to approximately 500 µA respecting its power specifications. If the glove or sleeve under test presents resistance that produces leakage current above 500 µA, the equipment will limit the test voltage to avoid increasing the output current. -
Page 20: Setting The Tests
10. Setting the tests It is necessary to properly define the tests to be performed, configuring the following parameters before starting the measurements: Standard, Maximum Current, Glove class and Duration time. 10.1. Standard z Access the MENU using the button z Use the control to select STANDARD and press z Use the control... -
Page 21: Maximum Current
DT70KV 10.3. Maximum current In this mode, the operator will program the maximum current applied in the test: z Access the device’s MENU using the button z Use the control to select SETUP TEST and press z Use the control... -
Page 22: Duration Time
10.4. Duration time Depending on selected Standard, it is possible to define the test duration time: z Access the device’s MENU using the button z Use the control to select SETUP TEST and press z Use the control to select DURATION TIME and press z Use the control to select a test duration time and press to confirm... -
Page 23: Internal Memory
If there is an available Internet connection, Windows will silently connect to the Windows Update website and install any suitable driver it finds for the device. If no suitable driver is automatically found then you need to download it from www.megabras.com/megalogg, run the executable “usb-install.exe” and click in “Install”. -
Page 24: Remote Control
12.3. Remote control Use your Android™ smartphone or tablet to fully control this equipment with greater convenience and resources. Point your device to the QR-Code to download the App and enjoy its unique features! It’s free! • Android, Google Play and the Google Play logo are trademarks of Google LLC •... -
Page 25: Technical Specifications
DT70KV 15. Technical specifications Test voltage Up to 70,000 V Test voltage resolution 100 V from 10 kV up to 70 kV 10 V up to 9.99 kV Test voltage accuracy Up to 50 kV: ± (2 % of nominal value ± 2 digits) with 500 μA load Above 50 kV: ±... - Page 26 Power supply 200 - 240 V~ 50/60 Hz 50 VA Fuse 20 mm, T, 250 V, 5 A Operating temperature -5 °C to 50 °C Storage temperature -25 °C to 70 °C Humidity 95 % RH (non condensing) Altitude Up to 4,000 m Equipment weight Control unit: approx.
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Page 27: Warranty
DT70KV 16. Warranty MEGABRAS warrants the products for two years from date of shipment. We will repair, without charge, any defects due to faulty materials or workmanship. For warranty repair information, visit our website www.megabras.com. This warranty does not apply to accessories or damage caused where repairs have been made or attempted by others. - Page 28 MEGABRAS INDÚSTRIA ELETRÔNICA LTDA. Rua Gibraltar, 172 - Santo Amaro CEP 04755-070 - São Paulo - SP - Brazil Phone: +55 (11) 3254-8111 / +55 (11) 5641-8111 - Fax: +55 (11) 5641-9755 www.megabras.com...
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