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EKF VD-723 Technical Manual
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EKF VD-723 Technical Manual

Digital voltmeter
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TECHNICAL MANUAL
Digital voltmeters
VD-723, VD-963

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Summary of Contents for EKF VD-723

  • Page 1 TECHNICAL MANUAL Digital voltmeters VD-723, VD-963...

  • Page 2: Technical Data

    1 DESCRIPTION Digital voltmeters VD-723, VD-963 are designed for measuring voltage in AC electrical circuits. The devices comply with the requirements of GB/T13850-1998, IEC61010- 1, IEC61000-2-11, IEC60068-2-30. The devices are intended to be used indoors, in electrical enclosures and electrical installations of industrial, residential, public buildings and structures.
  • Page 3 Table 1 continued Characteristics Value Rated secondary voltage, transformer connection, V Measurement error ±0.5% ± 1 digit Supply voltage, V/Hz 230±10%/50 Sampling frequency 3 times/s Programmable transformation ratio values 1,0 - 3200,0 Max. power consumption, VA Operating temperature, °С -10 to +50 terminal side IP20 Degree of protection...
  • Page 4 “k” indicator - lights up when the voltage is displayed in kilovolts. To enter the settings menu, press and hold the Set button for 2 seconds (in measurement mode). Use the Down, Up, Left button to enter your password (default is 0). In the settings mode, pressing the SET button switches the menu items.
  • Page 5 W, mm H, mm L, mm D, mm L1, mm VD-723 VD-963 Installation, wiring and set-up may only be carried out by qualified electrical personnel. Voltmeters are connected to the circuit in parallel (Figures 2 - 5). UA UB UC UN Fig.
  • Page 6 Рис. 4 - Voltmeter connection through a voltage transformer (three conductors, nEt=n 3.3) Рис. 5 - Voltmeter connection through a voltage transformer (four conductors, nEt=n 3.4) Before installation, make a necessary cutout in the front panel of the enclosure. After that: •...

  • Page 7: Operation Conditions

    When the voltmeter is connected to the three-phase network using 4 AC 230V 10% conductors, then the A, B, C displays show the following voltages: Uab, Ubn, Ucn. When the voltmeter is connected to the three-phase network using 3 conductors, then the A, B, C displays show the following voltages: AC 230V 10% Uab, Ubc, Uca.

  • Page 8: Safety Requirements

    6 SAFETY REQUIREMENTS 6.1 Before putting them into operation, the devices do not require any special preparation, except for an visual inspection to confirm the absence of visible damage to the housing and corrosion or contamination of the terminals, check for clarity and readability of the device’s label and the availability of the verification info.

  • Page 9: Manufacturer's Warranty

    Otradnaya st., 2b bld. 9, 5th floor, 127273, Moscow, Russia. Теl.: +7 (495) 788-88-15. Importer and EKF trademark service representative оn the territory of the Republic of Kazakhstan: TOO «Energoresheniya Kazakhstan», Kazakhstan, Almaty, Bostandyk district, Turgut Ozal st., 247, apt 4.

  • Page 10: Certificate Of Acceptance

    12 CERTIFICATE OF ACCEPTANCE Th digital voltmeters VD-723, VD-963 have been manufactured in compliance with the effective laws and regulations and have been approved for operation. Date of manufacture: Device: _______________________ No. __________________ Model Serial number The device has been approved for operation.
  • Page 11 13 NOTE OF SALE Date of sale Seller’s signature Seller’s seal L.S.

This manual is also suitable for:

Vd-963