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Megger DET14C User Manual

Other manuals for DET14C: Quick Start Manual
Manual is about: Digital Earth Clamp-on Tester

Summary of DET14C

  • Page 1

    1 m det14c and det24c digital earth clamp-on tester user guide.

  • Page 2

    2 g safety warnings these safety warnings are provided to ensure the safety of personnel and proper operation of the instrument. ■ safety warnings and precautions must be read and understood before the instrument is used. They must be observed during use. ■ do not leave the instrument connected to t...

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    3 contents g safety warnings..................................................................... 2 contents....................................................................................... 3 general description ................................................................ 4 application.......

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    4 general description the det14c and det24c represent a new generation of earth/ground clamp-on resistance testers. These instruments induce a test current into earth systems and measure ground resistance in multi ground installations without needing to disconnect the ground. They offer market leadi...

  • Page 5

    5 figure 1: det14c / det24c instrument front view figure 2: det14c / det24c instrument rear view 1. Clamp jaws 2. Tactile barrier 3. Rotary switch 4. Hold button 5. Lcd display 6. Keypad 7. Tactile barrier 8. Lever 9. Battery cover/label.

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    6 figure 3: det14c / det24c instrument bottom view 1. Wrist strap loop 2. Irda window figure 4: det14c / det24c instrument display view save tick = set open cross = not set delete warning refer to user guide irda download signal noise detected alarm less than filter more than battery hold date forma...

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    7 application the det14c / det24c digital earth clamp meters are particularly suitable for measuring earth resistance in various installations such as buildings, pylons and rf transmitter sites without system disconnection. In addition, they can be used for the inspection and verification of lightni...

  • Page 8

    8 modes of operation the det14c / det24c can operate in one of three main modes, selected using the rotary switch: off – turn instrument off Ω - resistance measurement a - current measurement fn - setup and configuration when in a measurement mode, there are other functions which are selected using ...

  • Page 9

    9 general operation powering on the instrument the instrument is switched on by turning the rotary switch to one of the three mode positions, i.E. Ω, a or fn. The Ω (resistance) and a (ac current) measurements are both auto- ranging. Fig 8. Resistance measurement mode measuring resistance mode with ...

  • Page 10

    10 hold the hold key can be used to freeze a result in either resistance or current mode. Once held, the result can be saved to memory using the save () button. Hold has two modes depending on when it is activated: if a measurement is in progress and hold is pressed it will freeze the result even i...

  • Page 11

    11 recalling data stored data can be recalled and viewed on the instrument from the recall records ( ) function, which is the default screen on switching to function mode (fn). Press the ok button to enter the recall function. Results are showed with an index number. Pressing the right arrow button ...

  • Page 12

    12 being downloaded. On completion of the download the instrument returns to the function mode (fn). Powerdb shows results being loaded at the top of the form. When the download completes the results are shown in a spreadsheet window in front of the main powerdb form. Select all data or specific dat...

  • Page 13

    13 general specifications maximum jaw opening 39 mm maximum jaw inner dimensions 39 mm x 55 mm display type 4 digit + 6 digit with backlight battery type 4x 1.5 v iec lr6 alkaline battery life >24 hours continuous testing – see note 1 auto power down 300s (reset by jaw action or button press) data l...

  • Page 14

    14 measurement specifications reference conditions temperature +20 °c ± 3 °c humidity 50% rh ± 10% battery voltage 6 v ± 0.2 v operating position instrument horizontal conductor position perpendicular to jaws and centred in the aperture current sinusoidal (thd resistance non-inductive interference c...

  • Page 15

    15 operational error for current parameter specification typical max operating position instrument horizontal 0.26% 0.51% conductor position iec 61557-13 e 1 ±30 ° 0.65% 2.0% battery voltage iec 61557-13 e 2 4.4 v to 7.0 v 0.69% 5.7% temperature iec 61557-13 e 3 0 °c to +35 °c 0.38% / °c 0.63% / °c ...

  • Page 16

    16 ordering information and accessories det14c digital earth test clamp-on meter 1000-761 det24c digital earth test clamp-on meter 1000-762 included accessories (det14c and det24c) carrying case 1001-715 carrying strap (wrist loop) 1001-716 user guide cd-rom 1001-198 calibration check 1001-498 batte...

  • Page 17

    17 repair and warranty the instrument circuit contains static sensitive devices, and care must be taken in handling the printed circuit board. If the protection of an instrument has been impaired it should not be used, and be sent for repair by suitably trained and qualified personnel. The protectio...

  • Page 18

    18 returning an instrument for repair if returning an instrument to the manufacturer for repair, it should be sent freight pre-paid to the appropriate address. A copy of the invoice and of the packing note should be sent simultaneously by airmail to expedite clearance through customs. A repair estim...