Voltage Transformer Fundaments Application for Protection Devices

The Voltage Transformer Fundaments Application for Protection Devices, to show the students which the main functions of voltage transformers are and which the parameters that must be considered in order to choose the adequate voltage transformer are.

ATENG 11599 — Voltage Transformer Fundaments Application for Protection Devices

• The “ATENG 11599” application includes the following elements:
• N-REV/VT. Variable Resistor for Voltage Transformer Module.
  Variable resistor between 1 and 11 kΩ.
• Nominal power: 20 W.
• N-TRTV. Three-Phase Voltage Transformer Module.
• Input voltage max: 3 x 230 VAC.
• Output voltage max: 3 x 63 VAC.
  N-REV/VT
• Nominal Power: 1VA.
• Vector group: YY0.
• Required elements (Not included):
• N-VPS01. 3PH AC Power Supply Module.
  ON / OFF removable key.
• Supply voltage: 3 x 400 VAC + N.
  Emergency stop push-button.
  N-TRTV
• Three-phase supply hose with IP44 3PN + E 32 A 400 V connecting plug.
• Differential magnetothermal 4 poles, 25 A, 30 mA AC 6 KA.
• Fuses: 3 x 6 A.
• Motorized variable autotransformer:
• Nominal power: 3000 VA.
• Input voltage: 400 VAC.
• Fixed output voltage: 3 x 400 VAC + N.
• Variable output voltage:
  N-VPS01
• 0 – 450 VAC (3 PH + N).
• 0 – 240 VDC.
• Nominal current: 2 A.
• Three-position switch with automatic return:
• Position I: Voltage reduction.
• Position 0: Constant voltage.
• Position II: Voltage increase.
• DC ammeter: 0 – 5 A.
• AC ammeter: 0 – 5 A.
• DC voltmeter: 0 – 300 V.
• AC voltmeter: 0 – 500 V.
  Autotransformer.
• Nominal power: 3000 VA.
• N-EALD. Electrical Network Analyzer Module with Oscilloscope and Data Acquisition (2 units).
  The network analyzer module allows measuring, visualizing, and analyzing all electrical parameters
  in AC power networks. It features an LCD display and navigation buttons, and includes dedicated
  software for voltage and current waveform monitoring, harmonic visualization, tariff programming,
  alarm programming, and storage of electrical parameters.
• Characteristics:
• Multifunction three-phase power meter:
• Three-phase and single-phase voltage. Up to 690 VAC L-L. N-EALD
• Nominal line and neutral current: 10 A.
  Active, reactive, and apparent energy.
• Compatible frequencies: 25 Hz, 50 Hz, 60 Hz, and 400 Hz.
  V–I vector diagram visualization.
• Supply voltage: 85–265 VAC.
• Power quality control:
  Individual current and voltage harmonic measurement up to the 40th.
  Voltage and current THD, current TDD, and K-Factor.
  Max/min visualization.
  Waveform display, 128 samples/sec.
• Events and data storage:
• Harmonic analyzer:
  Voltage and current THD, current TDD, and K-Factor up to the 40th harmonic.
  Harmonic spectrum of current and voltage with angles.
• Tariff programming:
  Class 0.5S IEC 62053–22, active and reactive power in four quadrants.
  Measurement of total and per-phase active, reactive, and apparent energy.
• Time-of-use: four total energy/demand registers.
  Eight tariffs, four seasons, and four types of days.
  Automatic daily report of maximum and minimum consumed energy.
• Communications:
  RS-485 communication port.
  3

Specifications

• MED65. Digital Multimeter.
• This digital multimeter of about 3 ½ digits, with double-jack ending cables of about 4 mm to facilitate
  interconnections.
• With this digital multimeter we will be able to measure:
  Voltage.
  Current.
  Resistance.
  MED65
  Capacitors capacity.
  Temperature.
• N-REVT/1K. 1kW Three-Phase Variable Resistors Module.
  Parallel, series, star and delta connection.
• Resistance: 3 x 750 Ω.
• Current: 3 x 2 A.
  N-REVT/1K
• N-CON02. Three-Pole Contactor Module (230 VAC).
• Supply voltage coil: 230 VAC.
• Power terminals:
  3 input power terminals.
  3 output power terminals.
• Auxiliary contacts:
  3 normally open contacts (black).
  3 normally closed contacts (red).
  N-CON02
• N-REL09. Time Electronic Relay against Overcurrents Module (0-16 A).
  Electronic thermal relay.
  Overload protection.
• Range 1.2 - 7 A.
  Reset and test function.
  1 NONC contact.
  Temporization. N-REL09
• All necessary cables to realize the practical exercises are included.
  Cables and accessories, for normal operation.