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Copyright HT ITALIA 2014

Release EN 1.05 - 21/03/2019

ENGLISH

User manual

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Summary of Contents for HT7

Page 1: ... Copyright HT ITALIA 2014 Release EN 1 05 21 03 2019 ENGLISH User manual ...

Page 2: ...Voltage measurement 7 4 6 AC Voltage measurement with low input impedance 8 4 7 1 wire AC Voltage Detection polarity 9 4 8 Phase sequence indication 10 4 9 Continuity test 11 5 MAINTENANCE 12 5 1 General information 12 5 2 BatterY replacement 12 5 3 Cleaning 12 5 4 End of life 12 6 TECHNICAL SPECIFICATIONS 13 6 1 Technical characteristics 13 6 1 1 Electrical characteristics 13 6 1 2 Reference guid...

Page 3: ...strange substances blind display etc Avoid measuring voltages higher than 20V as you may risk electrical shocks The following symbols are used Caution refer to the instruction manual an improper use may damage the instrument or its components Danger high voltage risk of electrical shocks Double insulated instrument AC voltage DC voltage 1 1 PRELIMINARY This instrument has been designed for use in ...

Page 4: ...ow voltage installations Examples are electricity instruments and measurements on primary overcurrent protection devices and ripple control units Measurement category III is for measurements performed in the building installations Examples are measurements on distribution boards circuit breakers wiring including cables bus bars junction boxes switches socket outlets in the fixed installation and e...

Page 5: ...perfect conditions Notwithstanding we suggest you to check it rapidly any damage may have occurred during transport Make sure that all standard accessories mentioned in 6 3 are included Should you have to return back the instrument for any reason please follow the instructions mentioned in 7 3 2 SUPPLY VOLTAGE The instrument is powered by 2x1 5V alkaline batteries type AAA LR03 When batteries are ...

Page 6: ...DC voltage measurement This symbol is lighted up whenever the voltage between the probes exceeds 50V even if the batteries are low or have been removed Continuity test Clockwise phase sequence Counterclockwise phase sequence Detection voltage necessary to perform measurements Low battery indication 4 3 INITIAL AUTOTEST Before start any measurements perform the following checks Use the instrument o...

Page 7: ...he object under test see Fig 2 3 The instrument turns automatically on and the measured DC voltage value is displayed both in numerical and bargraph modes DC symbol is displayed Always keep the instrument in vertical position for an optimal display reading 4 The symbol if displayed indicates that the measured voltage is negative 5 The instrument turns automatically off as soon as the probes are di...

Page 8: ...nductors 3 The instrument turns automatically on and the measured AC voltage value is displayed both in numerical and bargraph modes AC symbol is displayed Always keep the instrument in vertical position for an optimal display reading 4 The symbol is lighted up for AC voltage measurements from 100V to 690V 50 60Hz 5 The instrument turns automatically off as soon as the probes are disconnected from...

Page 9: ... test see Fig 3 The measurement is performed only when probes are in contact to live conductors 3 The instrument turns automatically on and the measured AC voltage value is displayed both in numerical and bargraph modes AC symbol is displayed Always keep the instrument in vertical position for an optimal display reading 4 The symbol is lighted up for AC voltage measurements from 100V to 690V 50 60...

Page 10: ...ion 1 Perform the preliminary Autotest see 4 3 2 Connect the L2 probe to the object under test see Fig 5 The measurement is performed only when probe is in contact to live conductors 3 The instrument turns automatically on along with LEDs and for AC voltage detected from 100V to 690V 50 60Hz The display and bargraph values are not significant in this test 4 The instrument turns automatically off a...

Page 11: ...tomatically on and the measured AC voltage value is displayed both in numerical and bargraph modes 4 AC symbol is displayed LEDs and are lighted up for AC voltage measurements from 100V to 690V 50 60Hz 5 symbol clockwise and symbol counterclockwise are displayed according to the phase sequence detected 6 Connect the L1 probe to phase 2 and the L2 probe to phase 3 of the three phase system under te...

Page 12: ... test is active for resistance 200k The instrument turns automatically on along with LED and the buzzer indicating a positive test The display and bargraph values are not significant in this test and do not indicate the resistance value of the object under test 4 The instrument automatically turns off when the probes are separated from the object under test or the applied voltage is lower than 3V ...

Page 13: ...ld perform this operation Before carrying out this operation make sure you have disconnected all test leads from any energized circuit to avoid risks of electrical shock Fig 8 Battery replacement 1 Unscrew the screw on the bottom of the instrument and remove the battery cover 2 Remove the batteries from the battery compartment 3 Insert new batteries of the same kind see 6 1 3 respecting polarity s...

Page 14: ...0V 1V max 5s 250V 6k 3s 400VAC 690VDC Max output current Is 200mA 690V max 30s ca 48mA 230V Detection AC voltage automatic from 12V Measuring range selection automatic Frequency range 50 60Hz Minimum detected voltage 12VAC 1 wire AC voltage detection polarity Voltage range 100 690V AC Frequency range 50 60Hz Continuity test Range Buzzer Testcurrent Overload protection 200kΩ 1 A 690VDC 400VAC Phase...

Page 15: ...backlight 6 2 ENVIRONMENT 6 2 1 Environmental conditions Reference temperature of calibration 23 5 C 73 41 F Operating temperature 10 55 C 14 131 F Allowable relative humidity 85 RH Storage temperature 10 60 C 14 140 F Storage humidity 85 RH This instrument complies with the European Directive on low voltage 2006 95 CE LVD and with EMC 2004 108 CE 6 3 ACCESSORIES 6 3 1 Standard accessories Plastic...

Page 16: ...ons to the equipment without explicit authorization from our technical department Adaptation to a particular application not provided for by the definition of the equipment or by the instruction manual The content of this manual cannot be reproduced in any form without the manufacturer s authorization Our products are patented and our trademarks are registered The manufacturer reserves the right t...

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