System Of Horizontal Travel Lifting

System Of Horizontal Travel Lifting

General presentation

Coming from applications of lifting industry, this System Of Horizontal Travel Lifting functions in order to transfer of a modular load, whose values are understood between 50 to 125 daN. Intended to be a part of the systems used in electrotechnics lab, this system has been designed to make wire by students different types of asynchronous motor starting as well as a logic control. It is built around an electrical hoist with a capacity of 125 kg associated with an electrical cabinet integrated to the whole. It answers the securities norms in force.

Teaching objectives

• Mono speed asynchronous motor starting.
• Bi-speed asynchronous motor starting.
• Variation of frequency of the asynchronous motor.
• Logic control of the brake in lifting mode, safety management.
• Control of measurable sizes of the installation: absence or presence of voltage (system able to be used for the electric security clearance).
• Commissioning and inspection of the good running after wiring realization.
• Maintenance and control of the system (thermal relay, control of the travels ends).

Technical Specifications of System Of Horizontal Travel Lifting

• Mechanically welded Frame.
• Working area protected by a wire fencing.
• Access to the load by a door (with closing electric contact and key locking) located on the frame.

• Lifting motor: 850W, 400V three-phase, bi-speed.
• Horizontal travel motor: 400V three-phase, bi-speed.
• Lifting linear speed : 2 and 8 m/mn.
• Horizontal linear speed : 5 and 20 m/mn.
• 4 travel ends mechanics.

• Vertical axis: high and low.
• Load: 8 kg modular metallic masses with 11 additional elements of 10 kg, easily removable.

• The electrical cabinet is full part of the system. It receives the bearing plate wired by the student.
• It consists of two distinct zones:

• Area receiving receives the bearing plate wired by the student.
• A fastener device and connectors allows a quick assembly of the bearing plate wired by the student.
• The buttons and indicators are fixed on the door and are connected to the bearing plate by a fast connector.

This second area concerns the power supply of the electrical cabinet. It is already wired and the student doesn't have an access to it. It includes:

• An alternative 24V power supply.
• A 3*400V+N+T power supply protected by a 30 mA differential circuit-breaker.
• One security logical building block.
• One security limit switch on the door that conditions the power sequencing of the bearing plate. This security can be inhibited permitting to make measurement exercises or electric authorization.
• The power sequencing buttons and lights.
• A main switch.
• An electric power supply by three phased normalized connector 3*400V+N+T 16A.

• Lot of material to wire version direct starting on the 2 axes.
• Lot of material to wire version speed driver.

General features of the system:

• Measurements: length: 2440 mm, width of the basis: 620 mm, height 1630 mm.
• Weight: 300 Kg.
• Electric power supplied : 3 x 400 V+T+N - 16 A.

Feature of the confinement casket:

• Dimensions (L x w x h) out all: 320 x 650 x 1000 mm.
• Dimensions of the wiring zone: width: 600 mm, height: 800 mm.