0.2 kw Electric Power Transmission Training System

Transcription

1 0.2 kw Electric Power Transmission Training System LabVolt Series Datasheet Festo Didactic en 220 V - 50 Hz 07/2018

2 Table of Contents General Description 2 Topic Coverage 3 Features & Benefits 3 List of Available Training Systems 4 Optional Equipment 4 Optional Manual(s) 4 Available Training Systems 4 Equipment Description 8 Optional Equipment Description 24 General Description The 0.2 kw Electric Power Transmission Training System consists of modular hardware with the corresponding courseware. It allows electrical phenomena to be observed through voltage transients and power oscillations. Voltage regulation, real and reactive power flow control, and system stability can also be observed in the laboratory exercises. The training system was developed by educators to satisfy educational requirements that include industrial applications of electrical power technology. The design objective was to develop a low-power (0.2 kw) transmission line system of equipment that operates like industrial equipment. Through careful attention to engineering detail, the 0.2 kw Electric Power Transmission Training System has achieved this objective and in so doing, provides laboratory results that are easy to understand, with data values that are easily observed. The data, when applied to formulas, provide results that verify electrical laws. A laboratory manual guides students through the experiments and provides the necessary theoretical background to allow them to successfully complete the educational objectives. This manual contains experiments that correlate with the training equipment for hands-on involvement with the subject matter. The instructor can select the experiments that will satisfy the objectives of technical courses or university programs. The flexibility of this system allows students act on their own initiative during laboratory sessions. With the guidance of an instructor, students gain the required competence for successful employment. The system's modular approach allows new equipment to be added to existing EMS laboratories without needless duplication of equipment. There are two standard module sizes: full-size, 208 mm (12.1 in) in height, and half-size, 154 mm (6.1 in) in height. All modules can be inserted into a Mobile Workstation, Model 8110, and have plastic face-plates permanently mounted to the module chassis. The modules are constructed of heavy-gauge steel, finished in baked enamel. Symbols and diagrams specific to each module are clearly silkscreened on the plastic faceplates. Standard color-coded safety 4 mm sockets are used to interconnect all system components. All unused modules can be placed in a Storage Cabinet, Model Only the necessary modules for a given experiment are placed in the console so that students are not distracted by the unused instrument. Students can learn step-by-step how to use each instrument and module. All machines are mounted in standard-size modules. The modules are equipped with a clear plastic faceplate fitted with a chrome piano hinge. The faceplate can be lowered for access to the machine, and when closed, it is secured by two captivated thumb screws. All machines have cutaway bell housings (front and rear) to permit visual inspection of the internal construction and observation of the machine during operation with the aid of a Stroboscope, Model Externally mounted components such as centrifugal switches, capacitors, brushes, sliprings, and commutators, in 2 Festo Didactic

3 addition to the exposed salient poles, squirrel cage and wound rotors, permit students to clearly determine component function as well as to understand relative position, turns, and wire sizes of the machinery. The shaft of each machine has a concave and slotted end to facilitate the use of tachometers, holding brakes, plugging switches, or inertia wheels. A geared pulley is fitted on each machine shaft to mechanically couple machines together through the use of a Timing Belt, Model This flexible belt has molded teeth which mesh with the geared machine pulleys. Tension for the timing belt is provided by the idler tensioning ball bearings which are mounted on each machine module. Resistance, inductance, and capacitance load components are housed in separate modules. They are designed to provide equal load magnitudes for all three types of loads. The load impedance can be varied in equal steps of unity value by switches provided in all load modules. These characteristics simplify calculations required in the learning process. The metering modules are designed to cover the complete range of required measurements with a minimum number of meters. The ac ammeter and voltmeter modules each contain three meters for simultaneously measuring all three currents and voltages on a three-phase system. All meters are designed to sustain starting currents even when used on a low range. Wattmeters are internally connected to read power directly when the input is connected to the source and the output to the load. Protection of vulnerable meter components is accomplished without fuses. A separate power supply for each workstation provides total control of the necessary power sources. This allows students maximum use of laboratory equipment and reduces interference with other simultaneous laboratory experiments. The power supply module provides all ac and dc power required at each station. The speed of the rotating machines can be measured using a Digital Tachometer, Model 8920, or an optional Speed Sensor / Tachometer, Model 8931, which is easily mounted on the machine. Topic Coverage Safety and the Power Supply Phase Sequence Real Power and Reactive Power Power Flow and Voltage Regulation of a Simple Transmission Line Phase Angle and Voltage Drop Between Sender and Receiver s which Affect Real and Reactive Power Flow Parallel Lines, Transformers, and Power-Handling Capacity The Alternator The Synchronous Motor The Synchronous Capacitor and Long High Voltage Lines Transmission Line Networks and the Three-Phase Regulating Autotransformer The Synchronous Motor Under Load Hunting and System Oscillation Power System Transients Additional Experiments Features & Benefits Sturdy workstations and modules constructed of heavy-gauge steel, finished in baked enamel Cutaway bell housings (front and rear) to permit visual inspection of the internal construction and observation of the machine during operation Festo Didactic 3

4 Comprehensive curriculum includes student manuals and instructor guide with all the necessary theory taught prior to the hands-on experiments The shaft of each machine has a concave and slotted end to facilitate the use of tachometers, holding brakes, plugging switches, or inertia wheels System conception and load components simplify calculations required in the learning process Safe: all electrical components can be interconnected without electric shock hazard, as all live parts of the plugs are concealed and insulated Metering modules are designed to cover the complete range of required measurements with a minimum number of meters List of Available Training Systems Qty Description Model number kw Electric Power Transmission Training System kw Electric Power Transmission Add-On to Model Optional Equipment Model Qty Description number 1 Three-Phase Wound-Rotor Induction Machine Optional Manual(s) Qty Description Model number kW Electric Power Transmission Training System (Manuals on CD-ROM) A0 1 Textbook Electrical Machines, Drives, and Power Systems, T. Wildi (Reference Book) Available Training Systems 0.2 kw Electric Power Transmission Training System The 0.2 kw Electric Power Transmission Training System consists of modular hardware with the corresponding courseware. It allows electrical phenomena to be observed through voltage transients and power oscillations. Voltage regulation, real and reactive power flow control, and system stability can also be observed in the laboratory exercises. The training system was developed by educators to satisfy educational requirements that include industrial applications of electrical power technology. The design objective was to develop a low-power (0.2 kw) transmission line system of equipment that operates like industrial equipment. Through careful attention to engineering detail, the 0.2 kw Electric Power Transmission Training System has achieved this objective and in 4 Festo Didactic

5 so doing, provides laboratory results that are easy to understand, with data values that are easily observed. The data, when applied to formulas, provide results that verify electrical laws. List of Equipment Qty Description Model number 1 Mobile Workstation Storage Shelves DC Motor/Generator Synchronous Motor/Generator Resistive Load Inductive Load Three-Phase Transmission Line Capacitive Load Three-Phase Transformer Bank Three-Phase Regulating Autotransformer DC Voltmeter/Ammeter AC Ammeter AC Voltmeter Wattmeter / Varmeter Phase Meter Power Supply Phase-Shift Indicator Inertia Wheel Stroboscope Timing Belt Connection Lead Set List of Manuals Manual Description number Electrical Power Transmission System (Instructor Guide) Electric Power Transmission System (Student Manual) Electric Power Technology Training Equipment (User Guide) E0 Table of Contents of the Manual(s) Electric Power Transmission System (Student Manual) ( ) 1 Safety and the Power Supply 2 Phase Sequence 3 Real Power and Reactive Power 4 Power Flow and Voltage Regulation of a Simple Transmission Line 5 Phase Angle and Voltage Drop between Sender and Receiver 6 s which Affect Real and Reactive Power Flow 7 Parallel Lines, Transformers and Power-Handling Capacity 8 The Alternator 9 The Synchronous Motor 10 The Synchronous Capacitor and Long High Voltage Lines Festo Didactic 5

6 11 Transmission Line Networks and the Three-Phase Regulating Autotransformer 12 The Synchronous Motor Under Load 13 Hunting and System Oscillation 14 Power System Transients 15 Additional Experiments Electric Power Technology Training Equipment (User Guide) (38486-E0) 1 General Safety Recommendations 2 System Power Requirements 3 Quick Start Installation Guide 4 Equipment Installation 5 Modules Handling, Installation, and Removal 6 Equipment Maintenance A Connection of the Power Supply to the AC Power Network B Description,, and Operation of the EMS Modules System System Requirements Maximum Current Typical Current AC Power Network Installation 10 A 1 A per student group AC Power Network Connector NEMA L22-20 Intended Location EMS Modules Full-Size Half-Size 3 phases (220/380 V 50 Hz), star (wye) configuration including neutral and ground wires, protected by a 20 A circuit breaker On the floor (stands on casters) 900 x 930 x 530 mm (35.4 x 36.6 x 20.9 in) 368 kg (812 lb) 308 x 287 x 440 mm (12.1 x 11.3 x 17.3 in) 154 x 287 x 440 mm (6.1 x 11.3 x 17.3 in) 0.2 kw Electric Power Transmission Add-On to Model The 0.2 kw Electric Power Transmission Add-On to Model 8001 is an add-on to the Electromechanical Training System, Model 8001, that allows students to perform the exercises in the Electric Power Transmission Training System courseware, without unnecessary duplication of equipment. When using this add-on, two student groups have to collaborate for some experiments. List of Equipment Qty Description Model number 2 Three-Phase Transmission Line Three-Phase Transformer Bank Three-Phase Regulating Autotransformer Wattmeter / Varmeter Festo Didactic

7 Qty Description Model number 1 Phase Meter Phase-Shift Indicator Inertia Wheel Stroboscope Connection Lead Set 8951-B0 List of Manuals Manual Description number Electrical Power Transmission System (Instructor Guide) Electric Power Transmission System (Student Manual) Table of Contents of the Manual(s) Electric Power Transmission System (Student Manual) ( ) 1 Safety and the Power Supply 2 Phase Sequence 3 Real Power and Reactive Power 4 Power Flow and Voltage Regulation of a Simple Transmission Line 5 Phase Angle and Voltage Drop between Sender and Receiver 6 s which Affect Real and Reactive Power Flow 7 Parallel Lines, Transformers and Power-Handling Capacity 8 The Alternator 9 The Synchronous Motor 10 The Synchronous Capacitor and Long High Voltage Lines 11 Transmission Line Networks and the Three-Phase Regulating Autotransformer 12 The Synchronous Motor Under Load 13 Hunting and System Oscillation 14 Power System Transients 15 Additional Experiments System System Requirements Maximum Current Typical Current AC Power Network Installation 10 A 1 A per student group AC Power Network Connector NEMA L phases (220/380 V 50 Hz), star (wye) configuration including neutral and ground wires, protected by a 20 A circuit breaker Intended Location Installed in the workstation of an Electromechanical Training System, Series 8001 EMS Modules Full-Size Half-Size TBE 70.0 kg (154 lb) 308 x 287 x 440 mm (12.1 x 11.3 x 17.3 in) 154 x 287 x 440 mm (6.1 x 11.3 x 17.3 in) Festo Didactic 7

8 Equipment Description Mobile Workstation The Mobile Workstation is a ready-foruse workstation that consists of two fully assembled modules: a Workstation, Model , mounted on a Mobile Storage Cabinet, Model Four rubber-tire swivel casters allow easy movement of the workstation in the laboratory classroom. The lower portion of the workstation serves as a storage cabinet with two hinged panels and a lock handle. Immediately above the storage cabinet is a pullout work surface with a scuff- and burnresistant laminate finish. The upper portion of the workstation consists of three rows of compartments designed to house EMS modules. Two of these rows have full-height compartments while the other row has half-height compartments. Each row of full-height compartments can accommodate up to three full-size EMS modules or six half-size EMS modules, whereas the row of half-height compartments can accommodate up to three half-size EMS modules. Module Installation The EMS modules are guided into position along stainless steel guide rails. Separators between each bay of the workstation ensure perfect alignment of the EMS modules and allow their easy insertion in the workstation. A holding mechanism ensures that each EMS module stays in place once it is installed in a compartment of the workstation. Front-mounted push levers allow all EMS modules on a single row to be released for easy removal. 8 Festo Didactic

9 Safety Padlock Bars Two safety padlock bars on the front of the workstation prevent students from removing EMS modules during laboratory exercises. The bars can be removed and locked to the side of the workstation when the safety lock is not necessary. Additional Information Six holes in the rear panel of the workstation allow connection to a power supply, as well as the connection of 2 kw machines to their interconnection modules. Assembly of the workstation before painting ensures that each EMS module in the workstation is correctly grounded. Manual Manual Description number Electric Power Technology Training Equipment (User Guide) E0 Table of Contents of the Manual(s) Electric Power Technology Training Equipment (User Guide) (38486-E0) 1 General Safety Recommendations 2 System Power Requirements 3 Quick Start Installation Guide 4 Equipment Installation 5 Modules Handling, Installation, and Removal 6 Equipment Maintenance A Connection of the Power Supply to the AC Power Network B Description,, and Operation of the EMS Modules Optional Equipment Qty Description Model number 1 Industrial Controls Single-Rail Workstation A0 1 Industrial Controls Double-Rail Workstation B0 1 This add-on workstation allows modules from the Industrial Controls Training Systems, Models 8036, to be installed in the EMS workstation. Refer to the 8036 datasheet for more information. 2 This add-on workstation allows modules from the Industrial Controls Training Systems, Models 8036, to be installed in the EMS workstation. Refer to the 8036 datasheet for more information. Festo Didactic 9

10 Intended Location On the floor (stands on casters) 1660 x 935 x 665 mm (65.4 x 36.8 x 26.2 in) 77.1 kg (170 lb) Storage Shelves The Storage Shelves module contains five shelves, each of which can accommodate four full-size EMS modules or eight half-size EMS modules. Stainless steel rails guide the modules on the storage shelves and protect them against wear. The Storage Shelves module requires assembly. A diagram is provided to facilitate assembly. Note that this model cannot stand by itself and must be attached to a wall. Optional Equipment Model Qty Description number 1 Dust Cover for Model Intended Location On the floor and attached to a wall 1980 x 1225 x 480 mm (78 x 48.2 x 18.9 in) TBE 10 Festo Didactic

11 DC Motor/Generator commutation while the machine is operating under load. The DC Motor/Generator is a dc machine mounted in a full-size EMS module. It can operate independently as a dc motor or a dc generator. The armature, shunt field, and series field windings are terminated separately on the faceplate to permit long and short shunt as well as cumulatively and differentially compounded motor and generator connections. This machine is fitted with exposed movable brushes to allow students to study the effect of armature reaction and An independent, circuit-breaker protected, shunt-field rheostat is mounted on the faceplate for motor speed control or generator output voltage adjustment. The speed of the DC Motor/Generator can be controlled using the Thyristor Speed Controller, Model 9017, in both the open-loop and closed-loop modes of control. Rating Motor Output Power Generator Output Power Armature Voltage Shunt Field Voltage Full-Load Speed Full-Load Motor Current Full-Load Generator Current 175 W 110 W 220 V dc 220 V dc 1500 r/min 1.3 A 0.5 A 308 x 287 x 445 mm (12.1 x 11.3 x 17.5 in) 14.1 kg (31 lb) Synchronous Motor/Generator The Synchronous Motor/Generator is a 0.2 kw three-phase synchronous machine mounted in a full-size EMS module. This machine can be operated either as a three-phase motor or a three-phase generator. Each phase of the machine stator windings is independently terminated and identified on the front panel to allow operation in either wye or delta configuration. The machine rotor is equipped with a squirrel-cage damper. Variable dc excitation to the rotor field Festo Didactic 11

12 windings is fed through externally mounted slip rings and brushes that are wired to a rheostat and control switch located on the front panel. Connections to the machine are made through color-coded safety banana jacks located on the front panel of the module. This front panel can be opened to install a Timing Belt, Model 8942, on the pulley of the machine shaft. This permits mechanical coupling of the machine to the Four-Quadrant Dynamometer/Power Supply, Model Motor Stator Voltage Rotor Voltage Output Power Synchronous Speed Full-Load Current Generator Stator Voltage Rotor Voltage Output Power Synchronous Speed Nominal Output Current 220/380 V, 50 Hz, 3-phase 220 V dc 175 W 1500 r/min 0.36 A 220/380 V, 50 Hz, 3-phase 220 V dc 110 VA 1500 r/min 0.17 A 308 x 287 x 440 mm (12.1 x 11.3 x 17.3 in) 14 kg (30.8 lb) Resistive Load The Resistive Load consists of a module housing nine wire-wound power resistors arranged in three identical banks. Each bank consists of three resistors connected in parallel that can be switched on or off with toggle switches to obtain various resistance values. This allows the total (equivalent) resistance of each bank to be increased or decreased by steps. Six safety banana jacks on the module front panel provide access to each resistor bank. The three resistor banks can be connected separately for operation in three-phase circuits. Also, the three resistor banks can be connected together for operation in single-phase circuits. The Resistive Load is commonly used in conjunction with other basic load modules, like the Inductive Load and the Capacitive Load to experiment with the effects of different types of load on a circuit. Resistors Quantity Resistance s (Each Group) Nominal Voltage Resistance Accuracy ± 5% Load at Nominal Voltage (Each Bank) Power Three identical banks of three resistors 1100/2200/4400 Ω 220 V ac/dc W 12 Festo Didactic

13 Current Steps Current Increment Color Front panel color A Seven, of equal increment 0.05 A 154 x 287 x 410 mm (6.1 x 11.3 x 16.1 in) 4.5 kg (9.9 lb) Blue Inductive Load The Inductive Load consists of a module housing nine iron-core power inductors arranged in three identical banks. Each bank consists of three inductors connected in parallel that can be switched on or off with toggle switches to obtain various inductance values. This allows the equivalent inductance of each bank to be increased or decreased by steps. Six safety banana jacks on the module front panel provide access to each inductor bank. The three inductor banks can be connected separately for operation in three-phase circuits. Also, the three inductor banks can be connected together for operation in single-phase circuits. The Inductive Load is commonly used in conjunction with other basic load modules, like the Resistive Load and the Capacitive Load to experiment with the effects of different types of load on a circuit. Inductors Quantity Inductance s (Each Bank) Reactance s (Each Bank) Nominal Voltage Inductance Accuracy ± 5% Load at Nominal Voltage (Each Bank) Reactive Power Current Steps Current Increment Three identical banks of three inductors 3.5/7/14 H 1100/2200/4400 Ω 220 V 50 Hz var A Seven, of equal increment 0.05 A 154 x 287 x 410 mm (6.1 x 11.3 x 16.1 in) 10.1 kg (22.3 lb) Festo Didactic 13

14 Three-Phase Transmission Line The Three-Phase Transmission Line consists of three iron-core inductors enclosed in a half-size EMS module. The inductors are specifically designed to simulate a high-voltage ac transmission line. The line impedance can be adjusted to four different values using a selector switch mounted on the front panel. A threepole switch is used to induce transients by momentarily interrupting the power flow. Both sides (sender and receiver) of the Three-Phase Transmission Line are terminated on the front panel by 4 mm color-coded safety banana jacks. Ratings Line Reactance Settings Nominal Line Current Shipping Weight 0, 200, 400, and 600 Ω 0.6 A 154 x 287 x 440 mm (6.1 x 11.3 x 17.3 in) 8.2 kg (18 lb) 9.8 kg (21.6 lb) Capacitive Load The Capacitive Load consists of a module housing nine capacitors arranged in three identical banks. Each bank consists of three capacitors connected in parallel that can be switched on or off with toggle switches to obtain various capacitance values. This allows the equivalent capacitance of each bank to be increased or decreased by steps. Six safety banana jacks on the module front panel provide access to each capacitor bank. The three capacitor banks can be connected separately for operation in three-phase circuits. Also, the three capacitor banks can be connected together for operation in single-phase circuits. A permanently connected discharge resistor reduces the voltage across the terminals of each bank of capacitors to 5% of the applied voltage within 25 seconds after the load is disconnected from the supply. The Capacitive Load may be used with both dc and ac power. The Capacitive Load is commonly used in conjunction with the other basic load modules, the Resistive Load and the Inductive Load to experiment with the effects of different types of load on a circuit. Capacitors 14 Festo Didactic

15 Quantity Capacitance s (Each Bank) Reactance s (Each Bank) Nominal Voltage Maximum Voltage Three identical banks of three capacitors 0.72/1.45/2.89 μf 1100/2200/4400 Ω 220 V 50 Hz 440 V Capacitance Accuracy ± 5% Load at Nominal Voltage (Each Bank) Reactive Power Current Steps Current Increment Three-Phase Transformer Bank var A Seven, of equal increment 0.05 A 154 x 287 x 410 mm (6.1 x 11.3 x 16.1 in) 5.7 kg (12.6 lb) The Three-Phase Transformer Bank consists of three independent power transformers enclosed in a module. Safety banana jacks on the module front panel provide individual access to the windings of each power transformer, allowing connection in either wye or delta configuration. The transformer windings are polarized and the polarity of each winding is indicated by a small dot on the module front panel. Resettable fuses protect the primary and secondary windings of each transformer against overcurrents. Fuse status lamps on the module front panel turn on when the resettable fuses open. Rating (Each Transformer) Primary Voltage Secondary Voltage Power Full-Load Current 380 V 380/220 V 250 VA 0.66 A 154 x 287 x 410 mm (6.1 x 11.3 x 16.1 in) 13.9 kg (30.6 lb) Festo Didactic 15

16 Three-Phase Regulating Autotransformer The Three-Phase Regulating Autotransformer consists of a threephase autotransformer enclosed in a half-size EMS module. Eight safety banana jacks on the module front panel provide access to both sides of the regulating autotransformer. A buck-boost selector switch can be used to increase or decrease the autotransformer output voltage by 15%. A phase-shift selector switch can be used to set the phase shift produced by the autotransformer output voltage to ±15. A phase sequence indicator on the module front panel indicates the phase sequence of the voltages across the autotransformer. Rating Line Voltage Power Line Current 220/380 V 400 VA 0.6 A Buck-Boost Voltage -15, 0, -15% Phase Shift -15, 0, -15 Phase Sequence Shipping Weight 154 x 287 x 440 mm; (6.1 x 11.3 x 17.3 in) 7.6 kg (16.7 lb) 9.2 kg (20.2 lb) DC Voltmeter/Ammeter multiplied by a constant. The DC Voltmeter/Ammeter module is an EMS metering module. It is fitted with one dc voltmeter, one dc milliammeter, and one dc ammeter. Meter ranges and scalar values of each instrument have been carefully selected for compatibility and are appropriate for the electrical values to be measured. All meter readings are direct indications and do not require the indicated value to be mentally All meters are diode-protected against burnout, should the students miswire a meter by range or function. This permits the greatest latitude of student involvement without fear of damaging equipment. All meters are terminated by 4 mm color-coded safety sockets. 16 Festo Didactic

17 Voltmeter Ranges Low High Milliammeter Range Ammeter Ranges Low High 0-40 V 400 V ma A 3 A Accuracy 2% Type of Instrument Type of Movement Shipping Weight AC Ammeter Panel meter - 65 mm (2.5 in) d'arsonval 154 x 287 x 440 mm (6.1 x 11.3 x 17.3 in) 3.5 kg (7.7 lb) 5.1 kg (11.2 lb) The AC Ammeter module is fitted with three separate multi-range ac ammeters for simultaneous measurement of three-phase currents. Two of the three meters have identical ranges while the third instrument has one additional higher range for measurement of the starting current of single-phase motors. Meter ranges and scalar values of each instrument have been carefully selected for compatibility and are appropriate for the electrical values to be measured. All meter readings are direct indications and do not require the indicated value to be mentally multiplied by a constant. All meters are diode-protected against burnout, should the students miswire a meter by range or function. This permits the greatest latitude of student involvement without fear of damaging equipment. All meters are terminated by 4 mm color-coded safety sockets. Ammeter Ranges High (Two Meters) Low (One Meter) Accuracy 2% Type of Instrument Type of Movement Shipping Weight A / 1.5 A / 5 A A / 1.5 A / 5 A / 15 A Panel meter - 65 mm (2.5 in) Moving vane and current transformer 154 x 287 x 440 mm (6.1 x 11.3 x 17.3 in) 4.8 kg (10.6 lb) 6.4 kg (14.1 lb) Festo Didactic 17

18 AC Voltmeter multiplied by a constant. The AC Voltmeter module is fitted with three separate multi-range ac voltmeters for simultaneous measurement of three-phase voltages. Meter ranges and scalar values of each instrument have been carefully selected for compatibility and are appropriate for the electrical values to be measured. All meter readings are direct indications and do not require the indicated value to be mentally All meters are diode-protected against burnout, should the students miswire a meter by range or function. This permits the greatest latitude of student involvement without fear of damaging equipment. All meters are terminated by 4 mm color-coded safety sockets. Voltmeter Ranges Low High Accuracy 2% Type of Instrument Type of Movement Shipping Weight Wattmeter / Varmeter V ac 500 V ac Panel meter - 65 mm (2.5 in) d'arsonval, 1000 Ω/V, and rectifier current 154 x 287 x 440 mm (6.1 x 11.3 x 17.3 in) 3.6 kg (7.9 lb) 5.2 kg (11.4 lb) The Wattmeter / Varmeter module is one of the metering modules designed for the Electromechanical (EMS) System. It is fitted with one wattmeter and one varmeter and is designed to indicate direct measurement of active and reactive power in balanced threephase circuits. Each meter has a zerocenter cable scale to show the direction of power flow. Its electronic design uses voltage and current sensors to sample line voltage and current. Voltage and current circuits are internally connected so that students only have to connect the "line" and "load" terminals of the module. Rating 18 Festo Didactic

19 Wattmeter Range Varmeter Range Maximum Voltage Maximum Current AC Power Input W var 450 V 0.8 A 24 V Accuracy 2% Type of Instrument Type of Movement Phase Meter Panel Type 100 mm (4 in) d'arsonval 154 x 287 x 440 mm (6.1 x 11.3 x 17.3 in) 3.9 kg (8.6 lb) The Phase Meter is fitted with a meter designed to indicate the phase angle (in degrees) between two ac voltages. Two LED indicators are built into the meter face: one is marked lead and the other is marked lag. By observing the state of the indicators, an unknown voltage can be compared to a known (reference) voltage and the meter will indicate how many degrees the unknown voltage is out of phase (lead or lag) with the reference voltage source. For this reason, this meter also functions as a synchroscope. Phase Meter Range Accuracy 2% Type Dimensions Movement Inputs Voltage Frequency Low Power Input (leading) Panel 115 mm (4.5 in) d'arsonval with electronic transducer V Hz 24 V 85 ma 50/60 Hz 154 x 287 x 440 mm (6.1 x 11.3 x 17.3 in) 3.7 kg (8.1 lb) Festo Didactic 19

20 Power Supply The Power Supply is enclosed in a fullsize EMS module. It can be used to power most of the EMS modules of the Electricity and New Energy Training Equipment. This Power Supply provides dc power and ac power, both fixed and variable, single-phase and three-phase. Color-coded safety banana jacks provide access to all the power sources in the Power Supply. All these power sources can be used simultaneously, provided that the total current drawn does not exceed the maximum current rating. A built-in voltmeter with selector switch and liquid crystal display (LCD) indicates the voltage provided by any of the power sources. The input and outputs of the Power Supply are protected by independent circuit breakers. Module Requirements AC Power Network Installation AC Power Network Connector NEMA L22-20 Maximum Current Outputs (*see note) Three-Phase Fixed AC Three-Phase Variable AC Variable DC Fixed DC Low Power AC Included Accessories *Note 3 phases (220/380 V 50 Hz), star (wye) configuration including neutral and ground wires, protected by a 20 A circuit breaker 10 A 220/380 V 10 A - 50 Hz 0-220/380 V 3 A - 50 Hz V 5 A 220 V 1 A 24 V 3 A - 50 Hz 3 m (10 ft) ac power cord (1) NEMA L22-20 wall connector with wall plate (1) Square metal outlet box (1) Outlet box cover (1) Outlet box connector (1) Padlock (1) 308 x 287 x 495 mm (12.1 x 11.3 x 19.5 in) 18.4 kg (40.5 lb) The Power Supply cannot supply all the amounts of current indicated by the current ratings on its front panel at the same time. The current indicated for the fixed ac three-phase output section can only be obtained if no current is drawn from any other section, because this section is protected by the main circuit breaker common to every section. If currents flow in other sections, the available current for the fixed ac three-phase output section decreases. The variable ac output section and the variable dc output section are protected by a common set of circuit breakers placed after the fixed ac three-phase output section, which means that the current capacity has to be shared between the two sections. For instance, if current of the variable dc output section is at 70% of its nominal value, current drawn from the variable ac output section should not exceed 30% of its nominal value. The fixed dc output section is also protected by circuit breakers placed after the fixed ac three-phase output section. 20 Festo Didactic

21 Phase-Shift Indicator The Phase-Shift Indicator is a highquality accessory designed to measure the rotor phase angle of the Three- Phase Synchronous Motor/Generator, Model It consists of a transparent plastic disc calibrated in electrical degrees and a metal mounting bracket. It attaches to the end of the machine carriage with slide fasteners. The rotor phase angle can be read by illuminating the end of the machine shaft, through the calibrated disc, with a Stroboscope, Model The reading corresponds to the phase angle, in electrical degrees, of a fourpole ac machine. Range Direction of Rotation Inertia Wheel (electrical degrees for a 4-pole machine) CW and CCW 86 x 115 x 65 mm (3.4 x 4.5 x 2.6 in) 0.5 kg (1.1 lb) The Inertia Wheel is a balanced and calibrated inertia load that can be applied on almost any 0.2 kw EMS rotating machine. It is slipped over the front end shaft of the machine and secured in place with a knob. The Inertia Wheel provides a moment of inertia that is representative of large industrial machines. Moment of Inertia kg m² (0.62 lb ft²) Festo Didactic 21

22 230 x 230 x 65 mm (9.1 x 9.1 x 2.6 in) 3.5 kg (7.7 lb) Stroboscope The Stroboscope is a portable strobe lamp equipped with a handle for easy carrying. It is powered through a flexible power cable fitted with a grounded ac plug. The stroboscope has two modes of operation that are switch-selectable. In the internal mode of operation, the strobe lamp is triggered from the ac line frequency. In the external mode of operation, the strobe lamp is triggered by a separate signal source, from 1 Hz to 120 Hz, applied to the external input terminals. In this mode, the stroboscope can be used as a "strobe tachometer" to measure slip speed. Any function or audio frequency (AF) generator module can be used as the external signal source. The strobe fires at the precise instant the triggering signal rises and passes through zero. The Stroboscope, when used with phase shift indicators (Model 8906 or 8909), can accurately measure the rotor pole shift of a synchronous motor/generator, as well as the slip speed of non-synchronous machines. Power Requirements Current Service Installation Triggering Frequency Internal External External Triggering Voltage Sinusoidal Square Wave External Trigger Input Impedance Internal Intended Location Timing Belt A Standard single-phase ac outlet 25/50 Hz Hz V rms 10 V p-p minimum 50 kω On a table able to support the weight of the equipment 172 x 153 x 195 mm (6.8 x 6 x 7.7 in) 2.2 kg (4.8 lb) The Timing Belt is a high-quality industrial synchro-cog timing belt made of rubber whose teeth exactly mesh with the geared pulley fitted on the shaft of all 0.2 kw EMS machines. 22 Festo Didactic

23 The Timing Belt is supplied in a fixed length appropriate for coupling two adjacent EMS machines together without slippage between them. Pitch Pitch Length Number of Teeth 86 Dimensions (Width) Connection Lead Set mm (0.375 in) 819 mm (32.25 in) 12.7 mm (0.5 in) 0.1 kg (0.2 lb) This Connection Lead Set consists of extra-flexible leads terminated with stacking 4 mm safety banana plugs. The leads are supplied in different lengths and are color-coded according to length. 4 mm Safety Banana Plug Leads Characteristics Cross Section Rated Current Rated Voltage 4 mm Safety Banana Plug Leads Quantities Yellow, 30 cm (12 in) 16 Red, 60 cm (24 in) 16 Blue, 90 cm (36 in) 8 Connection Lead Set 8951-B0 1 mm² (1974 cmil) 19 A 600 V, CAT II This Connection Lead Set consists of extra-flexible leads terminated with stacking 4 mm safety banana plugs. The leads are supplied in different lengths and are color-coded according to length. 4 mm Safety Banana Plug Leads Characteristics Cross Section Rated Current Rated Voltage 4 mm Safety Banana Plug Leads Quantities Yellow, 30 cm (12 in) 6 Red, 60 cm (24 in) 4 Blue, 90 cm (36 in) 2 1 mm² (1974 cmil) 19 A 600 V, CAT II Festo Didactic 23

24 Optional Equipment Description Three-Phase Wound-Rotor Induction Machine (Optional) The Three-Phase Wound-Rotor Induction Machine is a rotating machine mounted in a full-size EMS module. Each phase of the stator windings is independently terminated and identified on the faceplate to permit operation in either delta or star (wye) configuration. The rotor windings are brought out to the faceplate via external slip rings and brushes. This machine can be used as a wound-rotor induction motor, phase shifter, single-phase variable coupling transformer, three-phase transformer, selsyn control, frequency converter or asynchronous induction generator. The speed of the machine can be controlled through the use of the Three-Phase Rheostat, Model List of Manuals Manual Description number Phase-Shifting with Transformers (Student Manual) The Wound-Rotor Induction Motor and Applications (Student Manual) Table of Contents of the Manual(s) The Wound-Rotor Induction Motor and Applications (Student Manual) ( ) 1 The Wound-Rotor Induction Motor Part I 2 The Wound-Rotor Induction Motor Part II 3 The Wound-Rotor Induction Motor Part III 4 Frequency Conversion 5 Reactance and Frequency 6 Selsyn Control Optional Equipment Model Qty Description number 1 Three-Phase Rheostat Power Requirement Rating Output Power Stator Voltage Rotor Voltage Full-Load Speed Full-Load Current 220/380 V 175 W 220/380 V, 3-phase 110/190 V, 3-phase 1240 r/min 0.53 A 24 Festo Didactic

25 308 x 291 x 440 mm (12.1 x 11.5 x 17.3 in) 14 kg (30.8 lb) Festo Didactic 25

26 Reflecting the commitment of Festo Didactic to high quality standards in product, design, development, production, installation, and service, our manufacturing and distribution facility has received the ISO 9001 certification. Festo Didactic reserves the right to make product improvements at any time and without notice and is not responsible for typographical errors. Festo Didactic recognizes all product names used herein as trademarks or registered trademarks of their respective holders. Festo Didactic Inc All rights reserved. Festo Didactic SE Rechbergstrasse Denkendorf Germany P. +49(0)711/ F. +49(0)711/ Festo Didactic Inc. 607 Industrial Way West Eatontown, NJ United States P F Festo Didactic Ltée/Ltd 675 rue du Carbone Québec QC G2N 2K7 Canada P F Festo Didactic