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HVA28 TD

Type

HVA28 TD

Article number

SH0216

Input Voltage

100 – 240 V 50/60 Hz /400 (VA)

Output Voltage

Sinusoidal

0 – 28 kV peak, 20 kV rms

± 0 – 28 kV

Squarewave

0 - 28 kV

Accuracy

± 1%

Resolution

0.1 kV

Output Current

0 – 20 mA (Resolution 1 µA) Accuracy: ±1%

Resistance Range

0.1 MΩ…5 GΩ

Output Frequency

0.01 … 0.1 Hz in steps of 0.01 Hz (default 0.1 Hz) - auto frequency

Output Load

0.5 µF @ 0.1 Hz @ 20kV rms

5.0 µF @ 0.01 Hz @ 20 kV rms

10.0 µF maximum Capacitance!

Sheath Test

Max Test Voltage

10 kV

Trip Current

0.1 mA – 5.0 mA

Sheath Fault Location²

Max Test Voltage

10 kV

Pulse/Period

1:3 / 4 s, 1:5 / 4 s, 1:5 / 6 s, 1:9 / 6 s

Output Modes

AC (VLF) Symmetrical and load independent across full range,

DC (plus or negative polarity), Burn-/Fault Condition or Fault Trip Mode,

Jacket / Sheath Testing

Safety

50Hz 12kV Feedback Protection / Dual Discharge Device (internal)

Memory

50 Test Records Stored

Metering

Voltage and Current (True rms and / or peak), Tan Delta, Capacitance,

Resistance, Time, Flashover Voltage

Tangens Delta accuracy

Load > 10 nF

± 1 x 10

-4

Duty

Continuous! No thermal limitation for operating time.

HV Cable

4 m with Alligator clamps

Software

“HVA Control Center”

Computer interfaces

Bluetooth

standard

USB

standard

Environmental conditions

Storage: -25°C to + 70°C,

Operating: -5°C to + 45°C

Humidity: 5-85% non condensing

Dimensions L x W x H

Peli Case 1430, 430 x 240 x 340 mm

Weight

14 kg

Upgrades (Optional)

Partial Discharge System

At lower frequency and voltage

in combination with locating device (not in scope of supply)

Options

•

Partial Discharge Diagnostics

System PD30

Scope of delivery

•

HVA28 TD Testing Device

•

HV cable 4 m

•

Power and earthing cable

•

Accessory bag

•

USB stick

•

Operating manual

b2 High-Voltage is a business division of

b2 electronic GmbH

Riedstrasse1, 6833 Klaus, Austria, Tel43 (0)5523 57373
Fax +43 (0)5523 57373-5, [email protected], www.b2hv.com

DHV1299 Rev00

ENGLISH

Subject to alternations.

Errors excepted,

Illustrations are not binding.

Содержание HVA28TD

Страница 1: ......

Страница 2: ......

Страница 3: ...ss division of b2 electronic GmbH Riedstraße 1 6833 Klaus AUSTRIA Tel 43 0 5523 57373 Fax 43 0 5523 57373 5 www b2hv com info b2hv com Subject to alternations errors excepted Illustrations are not binding Ultra compact and universal VLF High Voltage Test Set with Tangens Delta ...

Страница 4: ...1 Forward 2 DHV0053 b2 EN b2electronic gmbh ...

Страница 5: ...Features 11 3 3 Materials 12 4 DESIGN AND CONSTRUCTION 13 4 1 Control Elements 13 4 2 User Interface 16 4 3 Instrument Set up 18 4 4 Operation Modes 23 5 TEST PROCEDURE 26 5 1 Equipment Set up 26 5 2 Manual Test Mode 28 5 3 Automatic Test Mode 33 5 4 Interrupting a Test 38 6 TANGENS DELTA 39 6 1 Application 39 6 2 Equipment Set up 39 6 3 Tangens Delta Test 41 6 4 PC Software HVA28TD 43 6 5 Bluetoo...

Страница 6: ...ser s responsibilities User Responsibilities Focus HVA Operator To connect the equipment To carry out manual or pre programmed test sequence To verify validity of HVA application To adjust instrument settings To program automatic test sequences in accordance with particular testing standards All Sections Particular focus on all safety messages Procurement Management To assure that the workplace is...

Страница 7: ...ot avoided could result in death or serious injury Caution CAUTION Indicates a hazardous situation which if not avoided could result in minor or moderate injury Notice NOTICE Indicates suggested practices to protect equipment and property Yellow triangle framed in black Used to indicate a potential hazard Only used in conjunction with description of the possible hazard Detailed symbol may correspo...

Страница 8: ...t at our discretion Equipment that is returned to b2 must be packed in original packaging All shipped items must be prepaid and insured No other warranties are expressed or implied Contact Information b2 electronic GmbH Riedstrasse 1 Klaus Vorarlberg Austria T 43 0 5523 57373 F 43 0 5523 57373 5 www b2hv at info b2hv at Copyright 2012 b2 electronic GmbH All rights reserved No part of this publicat...

Страница 9: ... DUT must be earthed de energized and isolated from all power sources All auxiliary electrical apparatus such as switchgear surge arresters etc must be isolated from the test power source and the DUT All cables and connectors must be inspected for damage before use Damaged equipment must not be used Earth connections must be made first and removed last DUT must be discharged and earthed before dis...

Страница 10: ...e rating with DC can produce dangerous X rays NOTICE Equipment Handling DUT must have clean connections Test instruments must only be repaired or modified by authorized b2 personnel NOTICE If required according to local safety regulations Wear high voltage gloves when handling high voltage cables and equipment ...

Страница 11: ...ve loads Generators Switchgear Transformers Rotating machines Insulators Bushings Appropriate Measurements Measurement Examples Test Capacitance Resistance Dielectric breakdown voltage RMS current Applied voltage 2 4 Operator Qualifications HVA operators must be qualified electrical technicians Proof of necessary qualifications for working in high voltage domain is mandatory It is highly recommend...

Страница 12: ...ross full range DC plus or negative polarity Burn Fault Condition or Fault Trip Mode Jacket Sheath Testing Safety 50 Hz 12 kV Feedback Protection Dual Discharge Device internal Record Storage Built in Memory up to 50 reports 40 Test sequences USB Memory Flash drive Unlimited Metering Voltage and Current True rms and or peak Capacitance Resistance Time Flashover Voltage Tangens Delta measurement op...

Страница 13: ...imit connections to the DUT Facilitates testing Intelligent Design To avoid moving parts and need for lubrication Reduces maintenance Improves instrument durability and reliability Instrument Lock Key switch 7 To prevent against unauthorized use Improves safety Local and remote emergency off switches To shutdown operations in emergency situation Improves safety Fully integrated discharge and trans...

Страница 14: ... Art No Item Description Qty GH0584 HVA28TD HV Anschlusskabel 1 GH0522 Earthing Cable Transparent 6mm2 4m with 400A clamp 1 KEC0007 Power On Key Spare key for Key switch 7 1 KEK0038 Main Cable Europe EURO 3m sw EN60320 C13 1 KDD0012 USB Stick Flash Drive b2 1 VK0046 HVA28TD Transport Box 475 x 365 x 555 mm 1 VKR0027 HVA28TD Laptop bag b2 1 VS0002 HVA28TD riser for Peli Case 1 DHV0053 HVA28TD Opera...

Страница 15: ...gn and Construction 4 1 Control Elements HVA28TD control and connection components are located on the front panel Orientation Description Front Panel Test controls and emergency shutdown HV status information Cable and power source connections Air vent USB Front Panel ...

Страница 16: ...ge is OFF 3 LED red Indicates HV status Red light indicates High Voltage is ON possible DANGER DUT not discharged residual voltage 100V 4 Display screen Displays menu options and status information 5 Navigation knob Enables user to select options and functions shown on display See 4 2 User Interface To scroll selection up or down Rotate To enter selection Click push in 6 HV switch on off Activates...

Страница 17: ...nection point from HVA to earth 9 Power supply plug Serves as connection point from the HVA to the100V 240V 50 60 Hz powers source 10 HV output connector Serves as connection point from the HVA to the HV test lead To connect Screw the HV test lead into the HV output connector and tighten 11 Air Vent Air inlet with filter for cooling of electronic elements 12 Air Vent Air outlet for cooling of elec...

Страница 18: ... and Time Indicates day date and time USB Indicates if USB is enabled green or disabled red Bluetooth Indicates if Bluetooth is enabled green or disabled red Scroll Button If active scroll up or down the screen Up and Down Arrow Navigate with these arrows up and down if a Control Box is active Control Box Active Box is active chose given selections Control Box Inactive Box inactive no selections t...

Страница 19: ...e options shown on the HVA display screen 4 To move to another item in a menu list or to any other field possible on the actual displayed screen Rotate the knob To scroll through options or to change value displayed of an active field Rotate the knob To select marked option or to accept set value accept Push in click Rotate Push in Click ...

Страница 20: ...s should be established prior to first utilization and can be modified at anytime thereafter Instrument Settings is found in the main menu Instrument Setup Steps IS1 IS7 describe how to do the Instrument Setup Step Procedure Instrument Setup IS1 Settings Select Settings IS2 Instrument Setup Select Instrument Setup ...

Страница 21: ...et Date and Time To set Date and Time select Date and Time on Settings screen IS4 Units Choose between Metric and Feet IS5 Reporting Choose one of the reporting types Basic detailed report information can be entered Extended only Report Title is entered IS6 Bluetooth Activate or deactivate Bluetooth ...

Страница 22: ...S7 Finish Setup Put the USB flash drive into the Communication Port 13 and the take updates from the USB stick System Information Steps SI1 SI3 describe how to do find the System Information Step Procedure System Information SI1 Settings Select Settings SI2 System Information Select System Info ...

Страница 23: ...bh DHV0053 b2 EN 21 Step Procedure System Information SI3 See System Information System Information displays HVA characteristics This information cannot be modified by the operator Version HMI Version CTRL Serial number HVA unit serial number ...

Страница 24: ...w to do set Language and Region Step Procedure System Information L1 Settings Select Settings L2 System Information Select Language and Region L3 Language Choose Language English German Dutch French Spanish Russian Chinese L4 Region Choose Region Europe UK USA Russia China South Africa Asia International ...

Страница 25: ...on in order to satisfy specific requirements e g IEEE IEC standards Test sequence must be configured and saved at any time before testing Extended reporting most appropriate setting Output Modes The HVA can carry out HV28TD test in the following output modes Output Mode Characteristics DC Single polarity output DUT is polarized negative positive with respect to ground Not recommended for testing e...

Страница 26: ...fined 1 3 4 s 1 5 4 s 1 5 6 s 1 9 6 s Arc Management Modes If a fault is detected during a HV test the arc management mode determines how the failure is managed The Burn on Arc mode will condition the fault whereas the Trip out on Arc mode will immediately switch HV off Fault detected Burn on Arc Trip Out on Arc Dwell time Starts Dwell Time Ends DUT energizes Fault detected Fault conditioned DUT d...

Страница 27: ... displays USB enabled green Test sequences are directly saved to HVA28TD memory New reports are directly saved to USB stick inserted All reports saved in HVA28TD memory can be transferred to the linked USB stick During testing USB adapter and stick are connected to communication port 13 When connected left hand corner of main menu displays USB Test sequences are directly saved to HVA28TD memory Ne...

Страница 28: ...e S1 Connect Earthing Cable Connect earthing cable to the HVA earthing connector 10 Connect earthing cable to the DUT ground S2 Connect Power Supply Cable Connect the power supply cable to the HVA power supply plug 9 DANGER Electric Shock Hazard All procedures must comply with local safety regulations Before operating the HVA28TD equipment set up procedure must be completed Cables must be connecte...

Страница 29: ...at all cables are attached securely S5 Configure communication port 13 For USB Data Transfer Mode Connect the USB Flash adapter Insert USB stick Otherwise Verify that RS232 cable is not connected to the HVA S6 Turn key switch 7 to the ON position S7 The HVA system automatically boots Start up default screen appears Start Test screen Select appropriate option from default screen and proceed to appr...

Страница 30: ...gs as the previous test can be started directly after activating the system Setting Manual Test Parameters Steps MS1 MS11 describe how to set manual mode test parameters Step Procedure Set Manual Test Parameters MS1 Start new Test Select Start Test MS2 Start Manual Mode Select Manual Mode MS3 SETUP To set the waveform frequency or test duration select SETUP on bottom of Manual Test screen ...

Страница 31: ...at automatically maintains the frequency as close to 0 1Hz as possible To correct entry select CANCEL at bottom of display MS6 SETUP Duration Not applicable Vacuum Bottle Test To modify the duration rotate navigation knob 5 To accept value push in knob Min test duration 1 minute Max test duration 24 hours To return to Manual Mode screen select OK MS7 Arc Management Mode Rotate navigation knob 5 un...

Страница 32: ...voltage can be set once test has been initiated To set the test voltage before activating the manual mode test START Rotate navigation knob 5 until voltage field is framed The dot in upper right hand corner indicates that the test voltage is in preset mode To modify the value rotate navigation knob 5 Min test voltage 0 0kV Max voltage 20 0kVrms VLF 28 0kV DC To accept the value push in knob 5 The ...

Страница 33: ...Manual Mode Select Manual Mode MR3 START Test Start the test when test parameters displayed on the Manual Test screen are correct Rotate navigation knob 5 until the START field is highlighted To run the test push in knob 5 MR4 HV Activation Once the activation screen appears Press the HV switch 6 within 10 seconds If the HV switch is not activated within the 10 second window the Manual Mode screen...

Страница 34: ...g the test MR6 Set Test Voltage if not preset in step MS 8 Rotate navigation knob 5 to modify the voltage value Min test voltage 0 0kV Max voltage 20 0kV rms VLF 28 0kV DC MR7 Test Test begins automatically The bottom of the screen indicates the lapsed time T lapsed time total test duration MR8 Test End Display indicates end of Manual Test ...

Страница 35: ...sequence can be configured modified and saved at any time before testing Configuring Auto Test Sequence Overview Main Menu Start Sequence Edit Sequence Edit or New Sequences can be edited or generated with the HVA Control Center PC Software Save the new or prepared sequence under HVA28 hss on the USB flash drive Put the USB flash drive into the communication port 13 Make a USB update see IS7 ...

Страница 36: ...r generate new test sequences change to the HVA28 Control Center PC Software Edit or make a new test sequence on the HVA28 Control Center Save the sequence on the USB flash drive NOTICE The file must be saved under HVA28 hss on the USB flash drive Put the USB flash drive into the communication port 13 Make a USB update Settings see IS7 The sequence is found in the Edit Sequences Menu display AS3 D...

Страница 37: ...5 Test Procedure b2electronic gmbh DHV0053 b2 EN 35 Running an Automatic Test Overview Main Menu Last Used Sequence Use a different Test Seq Select Sequence Start Auto Test ...

Страница 38: ...ic Mode Step Procedure Run Automatic Test AR1 Use Last Seq or Start New Test Select Start Test AR2 Chose Test To repeat the previous test sequence Select Last Used Sequence from Main Menu Proceed to Step AR 4 Otherwise select Start Sequence AR3 Sequence Select one of the Sequences AR4 Sequence All information about the chosen sequence are displayed ...

Страница 39: ...tivated within the 10 second window the Start Auto Test Seq screen will reappear AR6 Test Start up Startup appears on the screen to indicate that the HVA is initializing test AR7 Test Test begins automatically The bottom of the screen indicates the lapsed time T lapsed time total test duration AR8 Test End Display indicates end of Auto Test If reporting is active the user can immediately view the ...

Страница 40: ...P No emergency When a test is in progress STOP on the display screen is highlighted To interrupt the test push in click the navigation knob 5 HVA28TD software deactivates HV Test stops Alternative When a test is in progress press the HV switch 6 to deactivate high voltage HVA28TD hardware deactivates HV Test stops Emergency Stop In an emergency situation press the Emergency Off 1 to shutdown the s...

Страница 41: ... tangens delta measuring system The tan delta test results of the test object can now be easily measured recorded and screen on the display The results can be stored easily via USB flash drive Additional it is the HVA28TD PC Software in scope of delivery With this PC Software the test results can be easily stored on a standard PC or Laptop for analysis trending or quality control This enables the ...

Страница 42: ...nations If necessary connect the external guard like it s shown in the pictures below GH0584 S5 Verify Connections Check that all cables are attached securely S6 Configure communication port 13 S7 Turn key switch 7 to the ON position S8 The HVA system automatically boots Start up default screen appears Start Test screen Select appropriate option from default screen and proceed to appropriate secti...

Страница 43: ...t Select Start Test TD2 Start Manual Mode Select Manual Mode TD3 START Test Start the test when test parameters displayed on the Manual Test screen are correct Rotate navigation knob 5 until the START field is highlighted To run the test push in knob 5 TD4 HV Activation Once the activation screen appears Press the HV switch 6 within 10 seconds If the HV switch is not activated within the 10 second...

Страница 44: ... the test TD6 Set Test Voltage if not preset in step MS 8 Rotate navigation knob 5 to modify the voltage value Min test voltage 0 0kV Max voltage 20 0kV rms VLF 28 0kV DC TD7 Test Test begins automatically The bottom of the screen indicates the lapsed time T lapsed time total test duration TD8 Test End Display indicates end of Manual Test ...

Страница 45: ...utomatically be inserted under the selected tab Wave View If a measurement is in progress this tab shows a slightly delayed real time display of the data acquired by the TD measurement system Voltage and Current are shown These values are not to scale The graph is updated after each finished waveform period Graph TD vs Voltage Graphical display of the TD test results as a function of applied volta...

Страница 46: ...hase test data was mistakenly recorded under the incorrect phase number This can happen if the user starts a measurement under one phase but does not change the Currently Measured Phase Selection Then the whole block can be easily moved after the full measurement block has been completed Report Block Measurements This grid shows the detailed individual test measurements for each distinct voltage E...

Страница 47: ...f cable as DUT is selected The user can enter a unique identifier for the Device Under Test DUT This Text will also be used by default as the title for this Report on the Summary and Printout Store As Default The user can store certain fields that are not likely to change from one test to another as default start up fields These fields are then easily and automatically inserted into any new test r...

Страница 48: ...ection using the Change Phase button in the block header as a later stage Graphical View Diagram This screen provides a graphical diagram of the Mean HVA28TD measurement data versus the applied test voltage The values of all three phases can be viewed and compared The graph automatically scales and draws the mean HVA28TD values for each voltage block Phase Selection for Diagram View Toggle ON OFF ...

Страница 49: ...figure Bluetooth support Initial usage only has do be done once Step 3 A B Setting up the TD Communication Port A With use of External Dongle or B Windows Supported Hardware There are 2 different ways to set up a communication port one is with Windows directly supported one is using the external dongle See below which procedure is to use with your computer Check Bluetooth Hardware First check if y...

Страница 50: ...tely 50 feet 15 meters DO NOT INSTALL THE BLUE TOOTH DONGLE BEFORE YOU INSTALLING THE DRIVERS AS DESCRIBED BELOW Start Installation Start the installation process by inserting the driver CD supplied The Setup should start automatically if not locate the CD DVD drive on My Computer and start Setup exe in the driver folder Due to possible technologically changes in drivers and the Windows operating ...

Страница 51: ...6 Tangens Delta b2electronic gmbh DHV0053 b2 EN 49 Choose Driver Software Destination We suggest to use the defaults Begin Installation Installation has started ...

Страница 52: ...driver now needs to have the Bluetooth dongle inserted Plug the dongle into a free USB port The windows Hardware Installation will now run and some further information windows will appear Please wait until the Hardware Detection has finished This screen will then disappear automatically ...

Страница 53: ...tallation of Bluetooth support on your Computer Other information messages may appear Please wait until the Installation completes Installation of Bluetooth support finished The above mentioned white on Blue B Bluetooth icon now appears in the system tray ...

Страница 54: ...nal dongle Please follow this instruction to set up a communication port to the TD system if you are using the external dongle with the above mentioned driver not windows built in support First usage configuration After the new installation of the Bluetooth support on your computer you have to configure the type of service your computer uses Double click on the Bluetooth icon in the system tray or...

Страница 55: ...6 Tangens Delta b2electronic gmbh DHV0053 b2 EN 53 Type in the name and type of your computer Start Configuration Check or uncheck those Bluetooth services you want to use ...

Страница 56: ...electronic gmbh Bluetooth Serial Port Configuration Leave as suggested Take note of the serial port number Press Skip to tell the system that you will connect to the TD system at a later stage Finished Initial Setup of Bluetooth Support ...

Страница 57: ... System by switching the main power switch off and then ON again Make sure the TD system is within 50 foot 15 meters of the connecting computer Since the Bluetooth RF signals can be affected by other wireless systems and obstructions such as WLAN or other RF devices try moving the TD system closer to your computer if you cannot get a pairing connection from following the procedure below Setup the ...

Страница 58: ...electronic gmbh Select I want to find a specific Bluetooth device to find the TD system All available Bluetooth devices are listed TD systems are shown with the last 6 digits of the Serial number Select the TD unit you want to connect to ...

Страница 59: ...e welcome and press Initiate Pairing A message No Com port available may be appear Just quit with ok Check the TDCommunication service to use A message to configure the port will appear Leave default setting for this port Make note of it You can use either Secure or Unsecured Connection ...

Страница 60: ...s an icon in My Bluetooth Places Initial Connection to the TD unit Establish and Test connection To establish the connection and to fix the settings of the COM port you have to perform an initial connection to the TD unit This is also verifies a correct setup Double click the TD System icon Connecting to the TD System ...

Страница 61: ...rite down this Configuration number for later reference purposes Close disconnect the Test connection Right click on the TD System icon and select Disconnect Disconnecting It is also possible to switch off the TD system and the connection will automatically be closed The System is now configured and you can start working with the TD ControlCenter You will use the given COM Port number to set in th...

Страница 62: ...u access to all Bluetooth specific properties and configurations Switch on the TD system Before connecting reset the TD System by switching the main power switch off and on Make sure the TD system is within the range of 50 feet 15 meters to the computer Internal integrated Bluetooth devices often have closer working ranges than external So you maybe have to reduce the distance to get good connecti...

Страница 63: ...onic gmbh DHV0053 b2 EN 61 Check Device is switched on and ready to discover All available Bluetooth devices are listed TD systems are shown with the last 6 digits of the Serial number Select the TD unit you want to connect to ...

Страница 64: ...6 Tangens Delta 62 DHV0053 b2 EN b2electronic gmbh Select Use Passkey from documentation and enter welcome to use as key Windows connects to the TD System and installs the relevant drivers ...

Страница 65: ...sed by the TD ControlCenter to communicate with the TD unit You can use the 3rd page of the manual to write down this Configuration Com Port number for later reference purposes The System is now configured You can start working with the TD ControlCenter Use the given COM Port number in the TD ControlCenter and press the connect button ...

Страница 66: ... local safety regulations D4 Lock HVA in disabled state to prevent against unauthorized use Turn Key switch 7 to OFF Position and remove Key D5 Disconnect the Test Lead Disconnect the test lead from the DUT Unscrew the test lead from the HV output connector 11 DANGER Electric Shock Hazard Never assume that equipment is safe to handle without using the necessary safety equipment and earthing proced...

Страница 67: ...e Disconnection D1 Switch HVA OFF Press Emergency OFF 1 Turn the HVA main switch 8 off Lock HVA in disabled state to prevent against unauthorized use Turn Key switch 7 to OFF Position and remove Key D2 Verify correct functioning of discharge stick D3 Discharge and earth the DUT complying with local safety regulations Discharge DUT using a discharge stick D4 Before disconnecting test lead wait unti...

Страница 68: ... after use before storing CAUTION Instrument Damage Do not store the HVA28TD outdoors Keep the HVA28TD away from liquids HVA should be stored indoors in the following environmental conditions Temperature 25 C to 70 C 13F to 158F Humidity 5 85 non condensing NOTICE Authorized personnel only Repairs and maintenance should only be preformed by authorized b2 personnel One yearly inspection by authoriz...

Страница 69: ...gized for a period long enough to reach thermal equilibrium Fault An unplanned occurrence or defect in an item which may result in one or more failures of the item itself or of other associated equipment source IEC Frequency Hz Number of cycles per unit of time f 1 Period Time units Hz 1Hz 1cycle 1 second 0 1 Hz 1cycle 10 second etc Hipot High potential voltage HV High Voltage tension Extremely hi...

Страница 70: ...ectronic gmbh 10 Declaration of Conformity The HVA28TD is CE certified and has met the following requirements of the European Council Category Standard EMC IEC61004 2 ESD Level 4 8 15kV IEC61004 4 Burst 4kV 5kHz EN55011 Safety EN60950 EN50191 EN61010 1 ...

Страница 71: ...ures Output voltage 28kVpeak 20kVrms Pure sinusoidal output voltage load independent Output current 20mA max Highest test capacity of 10µF Ultra light and compact weight 14kg Total protection unbreakable watertight dustproof chemical resistant and corrosion proof case Protection class IP67 with closed lid Unlimited and continuous duty cycle Large Colour display 4 3 Internal TD measurement with hig...

Страница 72: ... Metering Voltage and Current True rms and or peak Tan Delta Capacitance Resistance Time Flashover Voltage Tangens Delta accuracy Load 10 nF 1 x 10 4 Duty Continuous No thermal limitation for operating time HV Cable 4 m with Alligator clamps Software HVA Control Center Computer interfaces Bluetooth standard USB standard Environmental conditions Storage 25 C to 70 C Operating 5 C to 45 C Humidity 5...

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