GCB-3 Control And Protection Module Vocational Training Equipment Electrical Engineering Lab Equipment
The Control Module contains all power supply and control devices of the generation set mod. MSG-3 and enables to learn and experiment, with real industrial components, on the power production and the related protection systems. TRAINING PROGRAM: The training concerns the study of the machines for electricpower generation and the control devices. The application fieldof such devices concerns big high voltage production plantsas well as small low voltage autonomous and/or cogenerationplants. Main treated subjects: • Determination of the resistance of the synchronous machinewindings • Setting and operation of the protection relays • Setting and use of the programmable multifunctionalinstrument • No load or magnetization characteristic of the alternator • External characteristic of the alternator • Regulation characteristics for different power factors • “V“ curve of the synchronous motor • Use of the synchronous motor as compensator for the powerfactor correction TECHNICAL SPECIFICATIONS: CONTROL AND PROTECTION MODULEMod. GCB-3 The structure is made in sheet steel chemically treated andpainted with epoxy paint; the base is provided with rubber feetand can be laid over a work plane. All electrical componentsnecessary for the motor-generator set operation are includedin the module. Main installed components: • 1 Thermo-magnetic E.L.C.B. In = 10 A Idn = 30 mA, type A,with minimum voltage trip device and stop emergencypushbutton with mechanical interlock. • 1 Electronic microprocessor-controlled drive for 3-ph squirrelcage motor (operational modes: V/f and vectorial); max 1.5 kW. • 1 Voltage regulator 0-220 Vdc - 2 A for synchronous machineexcitation. • 1 Silk screen panel set on one side of the module to connectthe motor-generator set. • 1 Wide-scale analog ammeter 5 Aac with ammetric switchfor direct measurement of the current supplied or absorbedby the synchronous machine. • 1 Wide-scale analog voltmeter 500 Vac with voltmetricswitch for direct measurement of the phase-phase voltage,neutral phase provided by the synchronous machine. • 1 Wide-scale analog frequency meter 35-70 Hz for directmeasurement of the frequency provided by the synchronousmachine. • 5 Sectionable fuses for synchronous machine protection. • 1 Phase sequence and voltage asymmetry relay, for 400-Vnetworks, asymmetry control range 5-15%, selfpowered 400V • 1 Maximum and minimum voltage three-phase relay / N,control range +10% / -15%, Ue 380-400-415 Vac, selfpowered. • 1 Maximum and minimum frequency relay, 50-60 Hz, controlrange ±10 %, self-powered 230 Vac. • 1 Maximum current and short-circuit three-phase relay,control range 0-5 A / 5-25 A ac, auxiliary power supply 230V 50-60 Hz. • 1 Digital electrical power analyzer to be used with balancedor unbalanced systems with neutral, for measurement ofvoltages, currents, active, reactive and apparent power, peaks of maximum active, reactive and apparent power, active and reactive power counting, cogeneration counters. The analyzer includes a wide, high contrast, LCD display, five languages menu, organized in pages. Four pages can be programmed for a quick visualization of the preferred parameters. Complete with two programmable relays (for any parameter selected among any of the measured ones) with maximum and minimum alarm functions. The analyzer is provided with an interface RS485 for SCADA data acquisition. Supply with THEORETICAL – EXPERIMENTAL HANDBOOK
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