Differential Automatic Switches Application

The Differential Automatic Switches Application, to demonstrate how a differential protection switch works when an earth leakage occurs.

ATENG 11039 — Differential Automatic Switches Application

• The “ATENG 11039” application includes the following elements:
• N-ALI02. Domestic Main Power Supply Module.
• Supply voltage (single-phase): 230 VAC, 1PH+N.
  ON/OFF removable key.
• Output voltage connections:
• Two single-phase: 230 VAC. N-ALI02
  Single-phase supply hose connecting plug.
• Differential magnetothermal 2 poles, 25 A, 30 mA AC 6 KA.
  Emergency stop push button.
• N-TRANS01. Single-phase Galvanic Isolation Transformer 230/230 VAC, 500 VA, Module.
• Nominal power: 500 VA.
• Input voltage: 230 VAC.
• Output voltage: 230 VAC.
  N-TRANS01
  Earth-neutral connection switch.
• 2 A fuses.
  ON/OFF switch.
• N-DIF. Differential Protection (RCD) Module.
  Differential protection.
• Input terminals: 230 VAC.
• Output terminals: 230 VAC.
  N-DIF
• Sensitivity: 30 mA.
• MED65. Digital Multimeter.
• This module has a 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. MED65
  Current.
  Resistance.
  Capacitors capacity.
  Temperature.
• N-FAULT. Fault Injection Module with Human Body Impedance Selector Module.
  Fault injection push-button.
• Human impedance selector: 1 Ω, 2 Ω, 20 Ω, 200 Ω. N-FAULT
  Input connections (a, b).
• N-MEDV. Analog Voltmeter Module.
• Voltage measurement range: 0 – 100 VAC.
  Two voltage terminals. N-MEDV
  3

Specifications

• N-MEDI. Analog Ammeter Module.
• Current measurement range: 0 – 60 mA.
  Two current terminals.
• N-TSTF. Leakage to Ground Tester Module. N-MEDI
  Module for earth fault tests.
• 2 A fuse holder.
  Potentiometer for varying the impedance to ground.
  Connections for differential protection.
  Switch for activating the fault derivation.
  N-TSTF
• Connection terminals for:
• Single-phase transformer: 230 VAC.
  Earth transformer for current deviation measurement.
• All necessary cables to realize the practical exercises are included.
  Cables and Accessories, for normal operation.