Electrical Installations in Refrigeration Systems Unit

The Electrical Installations in Refrigeration Systems Unit, to teach the students about different circuits and electrical devices associated with the refrigeration field, how to carry out the wirings of these types of installations, how the refrigeration components are mounted and how the interaction between them is.

ATENG 12965 — Electrical Installations in Refrigeration Systems Unit

Anodized aluminum frame and panels made of painted steel.

The unit includes wheels to facilitate its mobility.

Main metallic elements made of stainless steel.

Diagram in the front panel with distribution of the elements similar to the real one.

Experimental unit for the training of apprentices in the refrigeration.

Design and investigation of circuits with electrical components from refrigeration field.

Electrical components mounted clearly visible and connected on terminal blocks.

A set of cables with wire end ferrules for wiring electrical components on terminal blocks.

Three pressure switches, two thermostats, a solenoid valve, a timer, four circuit breakers, five contactors, three relays, two capacitors.

Lamps and resistors to simulate energy consumption.

• Main components of circuit:
  Two pressure switches.
  A differential pressure switch.
  A set of terminal blocks.
  A circuit breaker with start-up current limiter.
  A timer.
  A thermistor circuit breaker.
  A PTC (Positive temperature coefficient) star-up relay.
  A switch cabinet.
  Five lamps.
  Two capacitors.
  A bimetallic circuit breaker (overheat protection).
  An electromagnetic star-up relay.
  An adjustable protection relay.
  A time relay.
  Five contactors.
  A solenoid valve.
  Two thermostats.
• Technical details of main components of circuit:
• Two pressure switches:
• High pressure: 8 to 32 bar.
• Low pressure: - 1 to 7 bar.
• A differential pressure: 0.2 to 5 bar.
• Two thermostats: -10 to 25 ºC.
• A timer:
  Two time switchable outputs.
• Switching time: 0 to 60 min.
• Five contactors:
  2 x 3 NO, 1 NC.
  3 x 4 NO.
• Start-up and operating capacitor: 15 µF, 80 µF.
• Power: 380 VAC, 50 Hz, 3 Phases.
  Cables and accessories, for normal operation.