NTC-17.55.15 “Residual Current Device (RCD) Testing Unit”

The stand is designed as a single unit, with control elements, indicator lights of measuring instruments, and a diagram illustrating the principle of operation of the residual current device (RCD) located on the front panel.

The electrical research circuit includes:

• The tested RCD.
• Circuit for studying the path of current flow through the human body.
• Digital measuring instruments (ammeter I, mA, timer t,s).
• Footwear resistance switch R_footwear (adjustable in the range [0..100] kΩ).
• Floor resistance switch R_floor (adjustable in the range [0..500] kΩ).
• Body resistance switch R_body (adjustable in the range [500..1000] Ω).
• Switch for selecting the type of tested RCD.

Inside the stand enclosure, the following components are installed:

• +12 V power supply unit (current 0.5 A) for powering digital instruments.
• Digital measuring instrument board.

Control elements include:

• Footwear resistance switch.
• Floor resistance switch.
• Body resistance switch.
• RCD type selector switch.
• Touch button “Touch”.
• RCD.

The stand is accompanied with a set of teaching materials and technical documentation intended for the teaching staff.