ZE4123 Demonstration Panel for the Electric
Testing Carried Out in A Building Teaching Equipment
1.INTRODUCTION
This panel can be used by teachers for their lessons and by
students for an easy learning and testing on electrical prevention
systems supplying them with the means for verifying the rule of art
and the relevant technical standards.
Actual electrical devices installed, already connected with each
other, enable to check the operation, besides carrying out the
measurements of all the electric parameters with conventional
instruments.
The panel is made of insulating material and it represents the
support of the necessary devices for carrying out the testing
programme.
The apparatuses are represented on the panel with their
standardized international symbols and electrical block diagram,
for an easy reference with their lay-out.
Furthermore, when necessary, test points correspond to standardized
educational terminals with high protection degree against
accidental contacts.
2.TRAINING PROGRAM:
This panel can be used to defi ne the electrical installations of a
building (power distribution via TT system) with reference to the
following topics:
Electrical installation of the building complying with guide
Graphic symbols for installation plans
Branch exchange for a fl at
Meter room and riser
Earthing system for the block of fl ats
Furthermore, this panel is designed to deal with topics,
visual checks, tests concerning:
Protection systems against direct and indirect contacts
Choice of conductors, current-carrying capacity and voltage drop
Testing the paths of conductors and their suitability and duct
diameter and removableness of conductors
Suitability of materials and of equipment
Protection and breaking devices
Identifi cation of neutral and earth conductors
Suitability of the connections of conductors
Continuity of protection and equipotential conductors
Isolation resistance
3.TECHNICALSPECIFICATIONS:
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.
Main components installed:
1 single-phase isolation transformer 230 V / 230 V 230 VA
2 simulators of earth plate with resistors of 2 Ω, 20Ω, 200 Ω, 2 kΩ
1 simulators of resistance of protection conductor with
resistors of 0.1 Ω, 1 Ω
1 simulator of extraneous conducting part with resistances of
200 Ω, 1000 Ω, 5000 Ω
1 magnetothermal circuit breaker 2 x 2 A “C”
1 magnetothermal circuit breaker 2 x 1 A “C”
1 differential circuit breaker 2 x 1.6 A “C” / 30 mA “AC”
1 magnetothermal and differential circuit breaker 2x25 A/30 mA “A”
1 protection and control switch – 2P +Earth
Two 2-pin sockets – 10/16 A, 2P + Earth
2 simulators of isolation earth fault in power consuming
Device with resistors of 50 kΩ, 15 kΩ, 5 kΩ, 1500 Ω, 500 Ω,
and bolted fault
Dimensions of demonstration panel: 800 x 600 mm
Dimensions of framework: 840 x 450 x 680 mm
Net weight: 33 kg
SUPPLIED ACCESSORIES:
1 single-phase power cord with UNEL plug
8 jumpers with safety plugs (Ø 4 mm) for assembling the
various installation conditions
4.RECOMMENDED ACCESSORIES AND SOFTWARE:
Multi-function microprocessor instrument for electric testing
Digital current probe
Digital autoranging multimeter
Circuit design, simulation and animation software for electrical
engineering projects
POWER SUPPLY:
230 V / PE 50-60 Hz; Max. absorption: 250 VA
