Study And Testing On Distribution Systems (Neutral Conductor) Trainer Vocational Training Equipment Electrical Engineering Lab Equipment

Name: Study And Testing On Distribution Systems (Neutral Conductor) Trainer Vocational Training Equipment Electrical Engineering Lab Equipment
Brand: sdafit.com
SKU: PDG-R
Availability: InStock
Rating: 5 (1 reviews)

Item No.: PDG-R

PDG-R Study And Testing On Distribution Systems (Neutral Conductor) Trainer Vocational Training Equipment Electrical Engineering Lab Equipment

INQUIRY

Description

PDG-R Study And Testing On Distribution Systems (Neutral Conductor) Trainer Vocational Training Equipment Electrical Engineering Lab Equipment

This panel can be used by teachers for their lessons and by students for an easy learning and testing the connection position of neutral conductor in low-voltage distribution systems.
TRAINING PROGRAM:
This panel is designed to study the distribution systems of electric power with reference to the main topics indicated here below:
• TT, TN and IT systems
• Protection against direct contacts by earthing, electric separation, differential circuit breaker
• Protection against overcurrents, selectivity in protection devices
• Earthing system and conductors
• Natural and artifi cial earth plates
• Supervision of insulation resistance in systems isolated from earth (IT)
• Suitability of materials and equipment
• Protection and breaking devices
Furthermore this panel enables to carry out the following testing and measurements with instruments:
• Identifi cation of neutral and earth conductors
• Measurement of insulation resistance
• Measurement of earth resistance
• Continuity tests of protection conductors
• Analyzing the functionality of differential breakers
• Measurement of resistance/impedance of fault loop
• Measurement of fi rst earth fault current in isolated systems

TECHNICAL SPECIFICATIONS:
Framework is made of sheet steel chemically treated and painted with several coats of epoxy varnish; its base is provided with rubber feet and it can be positioned on a working top. All the necessary electric components for the correct power supply of circuits are included in the panel.
Here are the main components installed and accessible, electrically, via safety terminals for plugs with diameter of 4 mm:
• 1 three-phase insulation transformer – 230-400 V / 230-400 V; 1500 VA
• 1 differential circuit breaker – 4 x 6 A; curve C with minimum voltage releasing coil, stop/emergency button with mechanic holding and signalling LED on operation panel
• 1 power line of 230 Vac -1 A for powering auxiliary devices
• 1 three-pole lever selector for inserting two different values of capacitance to earth in IT line
• 1 simulation of substation earthing with resistances of 0.3 Ω, 1 Ω
• 1 simulation of earth plate with resistances of 2 Ω, 20 Ω, 200 Ω, 2 kΩ
• 2 simulators of power consuming devices with sinusoidal or unidirectional earth fault current; fault resistance of 50 kΩ, 15 kΩ, 5 kΩ, 1.5 kΩ, 500 Ω, bolted fault
• 1 monitor for checking the isolation in IT systems with adjustment of the value of tripping sensitivity, and scale for monitoring the instantaneous value of insulation resistance of the installation
• 1 differential circuit breaker 4 x 2 A, curve C, provided with remote opening current start-up coil
• 1 four-pole differential circuit breaker of 25 A / 0.3 A, class A, “S” selective
• 1 set of three fuse holders, with breakable neutral conductor and fuses 10.2 x 38 of 1 A and 2 A
• 1 automatic magnetothermal differential switch 2 x 1 A, curve C, class AC, with possibility of using the only magnetothermal switch without the differential part
• 1 automatic magnetothermal differential switch 2 x 1 A, curve C, class A, with possibility of using the only magnetothermal switch without the differential part
• 1 differential relay coupled to a toroidal transformer with adjustable current Idn and tripping time
Dimensions of demonstration panel: 800 x 600 mm
Dimensions of framework: 840 x 450 x 680 mm
Net weight: 45 kg
Supply with
THEORETICAL – EXPERIMENTAL HANDBOOK