Item
DL 2109T
DL 1013M2
Spec's
This system must be composed of a set of modules for the study of electrical measurements With this system, it must
be possible for the student to test and study the operational characteristics of electrical measurements.
In particular, it must be possible to perform the following experiments:
•DC current measurement
•AC current measurement
•DC voltage measurement
•AC voltage measurement
•Ohm's law
•Bridge circuit
•Capacitive reactance
•Power in DC circuit
•Power in single-phase circuit
•PF measurement in single-phase circuit
•Inductive reactance
•One-wattmeter method
•Two-wattmeter method
•PF measurement in three-phase circuit
•Four-reading method
•Six-pulse bridge circuit
In order to perform these experiments the following modules shall be necessary.
POWER SUPPLY – didactic equipment
This item must be suitable for supplying fixed and variable alternating current and fixed and variable rectified direct
current, in order to carry out easily all the tests on electrical machines and in general in an electric measurement
laboratory.
It must include a start pushbutton with remote control switch, stop pushbutton, key-unlocked emergency mushroom
head pushbutton and differential magneto-thermal protection on the mains sockets.
Technical features
Output voltages:
Variable AC: 3 x 0 - 430 V, 5 A
3 x 0 - 240 V, 8 A
Fixed AC: 3 x 380 V + N, 16 A
3 x 220 V, 8 A
Q.ty
Standard fixed AC: 220 V, 10 A
Variable DC: 0 - 240 V, 10 A
0 - 225 V, 1 A
The turret must be equipped with the following parts:
Key general switch
Magnetothermal differential three-switch
Magnetothermal differential single-switch
Three-phase variator protection switch
Three-phase autotransformer protection switch
Commutator to supply fixed or variable
Magnetothermal main switch
Variable three-phase output switch
DC output switch
Three-phase output switch
Variable DC excitation output switch
Emergency pushbutton
Running pushbutton
Stop pushbutton
Supply warning light
Three-phase warning light
Voltage selection warning lights
Variable DC excitation warning light
Max speed connector
Knob for D.C. and A.C. output
Knob for D.C. excitation output
Magnetic-thermal protection for D.C. output
Connector for overspeed protection of motors
Power supply: 3x380 V + N, 50/60 Hz
Dimensions (W x H) : 998 x 293 mm.
It must be supplied with manual in English language.
DL 1017R
RESISTIVE LOAD – didactic equipment
It must consist in a single or three-phase resistive step-variable load. Housed in a metallic box.
MECHANICAL FEATURES
The load shall be composed of a rugged metal structure and of a front metal panel.
On the front panel all the controls, the protection, the output terminals and a clear synoptic diagram, shall be
collected.
ELECTRIC FEATURES
The load shall be composed of resistances, with possibility of star, delta and parallel connection, controlled by three
switches. This item must be provided also with fuses protection.
As a function of the switch positions, there shall be the following phase values:
Position Resistance
Max power per phase
1
1050 Ohm
46 W
2
750 Ohm
65 W
3
435 Ohm
110 W
4
300 Ohm
160 W
5
213 Ohm
230 W
6
150 Ohm
330 W
7
123 Ohm
400 W
Maximum power in single or three phase connection must be 1200 W.
Rated voltage in star connection must be 380 V, in D connection must be 220V, in single-phase must be 220V.
It must be supplied with manual in English language.
Dimensions (W x H): 436 x 174 mm
DL 1017L
INDUCTIVE LOAD – didactic equipment
It must consist of a single or three-phase inductive step-variable load. Housed in a metallic box.
MECHANICAL FEATURES
The load shall be composed of a rugged metal structure and of a front panel.
On the front panel all the controls, the protections, the output terminals and a clear synoptic diagram, shall be
collected.
ELECTRICAL FEATURES
The load shall be composed of inductances, with possibility of star, delta and parallel connection, controlled by three
switches.
This item must be provided also with fuses protection.
As a function of the switch position there shall be the following phase values.
Position Inductance Max. Power per phase
1
4.46 H
34 VAr
2
3.19 H
48 VAr
3
1.84 H
83 VAr
4
1.27 H
121 VAr
5
0.90 H
171 VAr
6
0.64 H
242 VAr
7
0.52 H
297 VAr
Max reactive power 890 VAr in three-phase or single-phase connection.
Rated voltage in star connection must be 380V, in D connection must be 220V, in single-phase must be 220V.
It must be supplied with manual in English language.
Dimensions (W x H): 436 x 174 mm
DL 1017C
CAPACITIVE LOAD – didactic equipment
It must consist of a single or three-phase capacitive step-variable load. Housed in a metallic box.
MECHANICAL FEATURES
The load shall be composed of a rugged metal structure and on the front panel all the controls, the protections, the
output terminals and a clear synoptic diagram shall be collected. This item must be provided also with fuses protection.
ELECTRICAL FEATURES
The load shall be composed of capacitors, with possibility of star, delta and parallel connection, controlled by three
switches.
As a function of the switch position, there shall be the following phase values (at 50Hz):
Position Capacitance
Max power per phase
1
2 μF
30 VAR
2
3 μF
45 VAR
3
5 μF
76 VAR
4
8 μF
121 VAR
5
10 μF
152 VAR
6
13 μF
197 VAR
7
18 μF
275 VAR
Max reactive power in single-phase or three-phase connection 825 VAr.
Rated voltage in star connection must be 380V, in D connection must be 220V, in single-phase must be 220V.
It must be supplied with manual in English language.
Dimensions (W x H): 436 x 174 mm
DL 2101T13
TRANSFORMER - didactic equipment
This module must consist of a single-phase transformer for low voltage modules with the following characteristics:
Primary: 127-220 V
Secondary: 2x12 V
Rated power: 100 VA
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Dimensions (W x H): 100 x 297 mm
It must be supplied with manual in English language.
DL 2109T02
DL 2109T03
SEQUENCYSCOPE UNIT - didactic equipment
This module must consist in a indicator of the phases cycle through signalling lamps with rated voltage: 3 x 380 V/220
V.
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Dimensions (W x H x D): 100 x 297 x 100 mm
It must be supplied with manual in English language.
BRIDGE RECTIFIER - didactic equipment
This module must have insulated type front panel with the electrical scheme; it must include also safety terminals.
Three-phase Graetz bridge.
Power supply: 220 Vac
Rectified output: 300 V - 24 A
Dimensions (W x H x D): 100 x 297 x 100 mm
It must be supplied with manual in English language.
DL 2109T04R
POTENTIOMETER - didactic equipment
This module shall consist of a excitation rheostat that shall be for shunt or compound excitation of dc machines and for
alternators.
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Rheostat, 680 Ω, 0.47 A, 150W
Dimensions (W x H x D): 200 x 297 x 100 mm
It must be supplied with manual in English language.
DL 2109T06
DOUBLE CHANGE-OVER UNIT - didactic equipment
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Two pole two-way commutator, 380 V, 16 A
Dimensions (W x H x D): 100 x 297 x 100 mm
It must be supplied with manual in English language.
DL 2109T10
MICROAMMETER - didactic equipment
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Moving coil, zero centred, with sensitivity reducer.
Range: 50/0/50 µA
Reducer: 1/10
Scale amplitude: 240°
Dimensions (W x H x D): 300 x 297 x 100 mm
It must be supplied with manual in English language.
DL 2109T11
MILLIAMMETER – didactic equipment
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Moving coil with rectifier.
Range: 250/500 mA, DC and AC
Scale amplitude: 240°
Dimensions (W x H x D): 300 x 297 x 100 mm
It must be supplied with manual in English language.
DL 2109T12
AMMETER – didactic equipment
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Moving coil with rectifier.
Range: 2.5/5 A, DC and AC
Scale amplitude: 240°
Dimensions (W x H x D): 300 x 297 x 100 mm
It must be supplied with manual in English language.
DL 2109T14
VOLTMETER – didactic equipment
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Moving coil with rectifier.
Range: 25/50 V, DC and AC
Scale amplitude: 240°
Dimensions (W x H x D): 300 x 297 x 100 mm
It must be supplied with manual in English language.
DL 2109T15
VOLTMETER – didactic equipment
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Moving coil with rectifier.
Range: 250/500 V, DC and AC
Scale amplitude: 240°
Dimensions (W x H x D): 300 x 297 x 100 mm
It must be supplied with manual in English language.
DL 2109T17
SINGLE-PHASE WATTMETER – didactic equipment
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Moving coil.
Range: 2.5-5 A / 240-480 V
Scale amplitude: 240°
Power supply: 24 Vac
Dimensions (W x H x D): 300 x 297 x 150 mm
It must be supplied with manual in English language.
DL 2109T18
SINGLE-PHASE PHASEMETER – didactic equipment
This module must have insulated front panel with the electrical scheme;
it must include also safety terminals.
Moving coil meter with transducer for single-phase ac.
Range: 1.5-6 A / 80-250 V
Scale amplitude: 240° x (0,5 cap - 1 - 0,5 ind)
Power supply: 24 Vac
Dimensions (W x H x D): 300 x 297 x 180 mm
It must be supplied with manual in English language.
DL 2109T19
THREE-PHASE PHASEMETER – didactic equipment
This module must have insulated front panel with the electrical scheme; it must include also safety terminals.
Moving coil meter with transducer for three-wire three-phase systems with balanced load.
Range: 1.5-6 A / 100-500 V
Scale amplitude: 240° x (0,5 cap - 1 - 0,5 ind)
Power supply: 24 Vac
Dimensions (W x H x D): 300 x 297 x 180 mm
It must be supplied with manual in English language.
TL 2109TM
CONNECTING LEADS
This item must be composed of a set of leads for the connection of the experiment modules.
These leads must have different lengths.
DL 2100-2M
TWO-LEVEL WORK FRAME
This item must consist in a metal frame with two levels for fitting the modules of the laboratory.
The structure shall be easily mounted on the work bench.
Dimensions (W x H x D): 990 x 739 x 40 mm
DL 1001-1
WORKBENCH
This item must consist in a large sized bilaminated wooden board and square legs with compensation feet.
Dimensions: 2 x 0,8 x 0,9 m