Request For Proposal For Supply Of Machines And Laboratory Equipment’S For Electrical Engineering And Electronics & Communication Engineering In The Premises Of Gec, Buxar--VOLTMETERS (Moving Iron Type) ,VOLTMETERS (Moving Coil Type) DC Voltmeter (Analog) 0-150/300V, Portable moving coil permanent magnet 150 mm uniform scale with anti parallax mirror, knife edge pointer housed in transparent polycarbonate moulded case for demonstration purpose. , AMMETERS ((Moving Iron Type) AC Ammeter (Analog) 0-2.5/5Amp, Portable moving coil permanent magnet 150 mm uniform scale with anti parallax mirror, knife edge pointer housed in transparent polycarbonate moulded case for demonstration purpose. , (e) DIGITAL MULTIMETER ,AC volts (True RMS) -2 TO STUDY BASIC ELECTRICAL TRAINER (MODULAR PANEL) List of experiments which can be performed: 1) To Understand Series & Parallel Circuit for R, L & C for DC Circuit 2) Verification of Kirchhoff’s Law 3) Verification of Superposition Theorem 4) Verification of Thevenin’s & Norton’s Theorem 5) Verification of Maximum Power Transfer Theorem 6) Study of Phenomenon of Resonance in RLC Series Circuit & Obtain Resonant Frequency 7) To Study Ohms Law Testing Panel Modules Mounted on Study Aluminum Profile Flat Demo System. Testing panel modules mounted on sturdy aluminum profile flat demo system consisting of colorful vinyl printed overlays circuit diagram, metering section, and power supply section fixed Bakelite sheet, fixed to modular aluminum profile structure. The back of the modular panel should be covered with detachable protective cover. Entire system should be sturdy arranged on 40X40 aluminum profile (Heavy duty) Anodized Silver Table frame having aluminum good quality treated ply board White / Silver gray with smooth finish veneer finish table top profile flat (25 mm thickness) provided with Four sturdy castor wheels with locking mechanism or level demo system. Foot so that table can be positioned conveniently. The Control panel should be provided to fit the following instruments mentioned below: (i)On board AC voltage source 12-0-12V — 01 No. (ii) Provision for connecting AC voltage source 0-230V — 01 No. (iii) On board, DC Voltmeter 0-50 V — 2 Nos. (iv) On board DC Ammeter 0-100 mAmp — 2 Nos. (v) On board Digital AC Voltmeter 0-50 V — 2 Nos. (vi) On board Digital AC Ammeter 0-100 mAmp — 2 Nos. (vii) On board fitted Single Phase Auto Transformer 2 Amp. (viii) On board fitted potentiometer — 03 Nos. (ix) On board printed resistor colour code scheme. (x) On board fitted different type of resistors. (xi) On board fitted different type of capacitor. (xii) On board fitted different type of inductor. (xiii) On board fitted DP MCB for ON/OFF switch and LED for power indication. (xiv) Glass fuse for short circuit protection. (xv) Screen printed block description on Bakelite Sheet. (xvi) All interconnections should made using 2 mm banana patch cords. (xvii) User manual as per the experiment and patch cords. 3 Study of Power Factor (Trainer Kit) The Control panel should be fitted with following instruments mentioned below: (i)Digital AC Voltmeter, 0-300V — 1 No. (ii) Digital AC Ammeter, 0-2A — 1 No. (iii) Digital Wattmeter 0- 2 Amp ,0-300V (iv) DP MCB 6 Amp — 01 No. (v) Single Phase Variac 2 Amp — 01 (vi) Indicating Lamps LED type 16 mm dia — 1 No. (vii) Inductive Coil — 01 (viii) Capacitor — 01 (ix) Insulating Terminals. (x) Patch chords. (xi) Instruction manual. As per experiment. (xii) Rheostat 1.4A, 260 Ohms — 01 The Control panel should be provided to fit the instruments mentioned below of Size L -1220mm x H-610mm x D - 230mm. The control panel should be mounted on M.S. Angle frame of size 35mm x 35mm x 4mm of height 760 mm with provision for grouting on floor through fasteners. The frame should have extended platform with hinges made of 19mm ply board with sun mica fitted top of size 1220mm x 303mm 4 Trainer kit for measuring THREE PHASE POWER USING TWO WATTMETER METHOD Control Board :- Rust free powder coated control board made up of high grade Fibre moulded body (FRP) of minimum thickness 4 mm for better safety and in compliance with IS3021/IEC60335- 1Shock proof banana jack terminal (BS-10), BS10 safety terminals as per compliance with 1S302- 1/TEC60335-1, The Enclosure should be open from front side for fitting of Engraved diagram Bakelite plate. The Control panel should be fitted with the following instruments mentioned below: (i)Digital AC Voltmeter, 0-500V — 1 No. (i1) Digital AC Ammeter 0-5A — 1 No. (iii) Digital Wattmeter 5 Amp — 2 Nos. (iv) TPN MCB 6 Amp — 01 No. (v) Indicating Lamps LED type 16 mm dia — 3 Nos. (vi) Insulating Terminals. (vii) Patch chords. (viii) Instruction manual as per experiment. (ix) ELECTRICAL LOAD HAVING FOLLOWING SPECIFICATION Three Phase/Single Phase Resistive Load (Trolley Mounted with caster wheels enclosed in perforated MS Box) Single Phase Operation Voltage: 240V AC +10%, 50 Hz ; Current: 135A ; Power : 3.5 Kw ; Loading steps : 15 MCBs; Current rating : 10A (SP); No. of MCBs : 15 Three Phase Star Operation — Voltage: 415V AC 10%, 50 Hz, Current : 5A (Per Phase);Power :3.5kW; Loading steps: 5 (per phase); MCBs (act as switch) : 10A (SP) Three Phase Delta Operation - Voltage : 415V AC ±10%, 50 Hz, Current : 15A (Per Phase) Power :10.5kW; Loading steps : 5 (per phase); MCBs : Current rating : 10A (SP); No. of MCBs: 15 Auxiliary Supply for in built fan : 230V AC, 50 Hz Star/Delta Switch : 415V, 25A; MCB : 16A (TPN) The Control panel should be provided to fit the instruments mentioned below of Size L -1220mm x H- 610mm x D - 230mm. The control panel should be mounted on M.S. Angle frame of size 35mm x 35mm x 4mm of height 760 mm with provision for grouting on floor through fasteners. The frame should have extended platform with hinges made of 19mm ply board with sun mica fitted top of size 1220mm x 305mm. 5 TO STUDY SINGLE PHASE TRANSFORMER LIST OF possible EXPERIMENTS:- 1) Observation of the No-Load Current Waveform (Non- Sinusoidal Wave-Shape due to B-H Curve) 2) Measurement of Primary & Secondary Voltages & Currents, & Power & Efficiency using OC & SC Test 3) Loading of a Transformer TRANSFORMER Single Phase Transformer 1 KVA 230/230V with Tappings at 50% & 86.6% & 13.4% Naturally Air Cooled Copper Double wound, Core type. The transformer will be housed in MS sheet box enclosure with top sheet and one side of MS Box should have window provision and having transparent acrylic sheet to see the internal parts. All the terminals of primary & secondary shall be brought over to transparent sheet fitted on top of the box through insulated banana Jack terminals (BS-10). The Control panel should be provided to fit the instruments mentioned below: (i) Digital AC Voltmeter Micro-controller based, NABL Certified, 0-300V – 2 Nos. (ii) Digital AC Ammeter Micro-controller based, NABL Certified, 0-5A – 2 Nos. (iii) Digital Wattmeter Micro-controller based, NABL Certified 5 Amp having following specification – 1 No. TRMS Measurement. 128 x 64 Graphical Display with White Backlight. RS485 Port. (iv) DP MCB 6 Amp – 01 No. (v) Indicating Lamps LED type 16 mm dia – 1 No. (vi) Single Phase Variac, 6 Amp – 1 No. (vii) Insulating Terminals. (viii) Patch chords. (ix) Instruction manual s per experiment. (x) ELECTRICAL LOAD HAVING FOLLOWING SPECIFICATION Three Phase/Single Phase Resistive Load (Trolley Mounted with caster wheels enclosed in perforated MS Box) Single Phase Operation Voltage : 240V AC ±10%, 50 Hz ; Current: 15A ; Power : 3.5 Kw ; Loading steps : 15 MCBs; Current rating : 10A (SP); No. of MCBs : ±15 Three Phase Star Operation - Voltage : 415V AC ±10%, 50 Hz, Current : 5A (Per Phase); Power : 3.5kW; Loading steps : 5 (per phase); MCBs (act as switch) : 10A (SP) Three Phase Delta Operation - Voltage : 415V AC ±10%, 50 Hz, Current : 15A (Per Phase) Power : 10.5kW; Loading steps : 5 (per phase); MCBs : Current rating : 10A (SP); No. of MCBs : 15 Auxiliary Supply for in built fan : 230V AC, 50 Hz Star/Delta Switch : 415V, 25A; MCB : 16A (TPN) The Control panel should be provided to fit the instruments mentioned below of Size L - 1220mm x H- 610mm x D - 230mm. The control panel should be mounted on M.S. Angle frame of size 35mm x 35mm x 4mm of height 760 mm with provision for grouting on floor through fasteners. The frame should have extended platform with hinges made of 19mm ply board with sun mica fitted top of size 1220mm x 305mm. ADDITIONAL ACCESSORIES COMPULSORY ITEMS (EXTERNALLY CONNECTED) REQUIRE TO CONDUCT EXPERIMENT must be provided. 6 CUT SECTION MODEL OF D.C. MOTOR SHUNT/COMPOUND WOUND : Cut model of D.C. Motor Shunt/compound wound, should consist of Quarter cut section of the enclosed Cover to show the constructional details of the Motor. Silicon steel laminations are used for Armature Core and Field Poles, S.E. copper wire is used for Armature and Field windings, Commutator consists of copper segments, individually insulated from one another and from the shaft, electrically connected to the Armature Winding coils. All connections of Field coils and Armature are brought out on the Bakelite plate. Provision has been made to show – Commutator, Rocker Arm, Carbon Brush holders, Armature winding, Poles and Field Coils. All parts are marked. The Model is a working one. The front and rear end cover should be covered with acrylic sheet with detachable hook clamp type for showing the internal parts of machine to student. DC Motor, 2.5 kW, 1500 RPM, 230 V, Insulation class “B” with DC Starter with Cut Section View. 7 CUT SECTION MODEL OF 3-PHASE SQUIRREL CAGE INDUCTION MOTOR Cut Out model of 3 Phase Squirrel Cage Induction Motor, consisting of quarter cut section, including shaft of the enclosed cover to show the constructional details of the Motor. The Motor is fitted on an appropriate size of M.S. channel frame. Silicon Steel laminations are used for STATOR and ROTOR Core and S.E. copper wire for Stator winding and Aluminum BAR for ROTOR winding, having provision of showing Rotor caging and Ring and Stator winding and Insulation. The Model is a working one and all parts are marked. The front and rear end cover should be covered with acrylic sheet with detachable hook clamp type for showing the internal parts of machine to student. AC Squirrel Cage Induction Motor, 2.5 kW. 3 phase, 415 v, 50 Hz class “B” Insulation with DOL Starter 8 CUT SECTION MODEL OF SLIPRING INDUCTION MOTOR –3 PHASE (PHASE WOUND) Cut Model of three phase Slipring Induction Motor, consisting Quarter cut section of the enclosed cover to show the constructional details of the wound Rotor and Stator, Sliprings. Silicon Steel Lamination are used for Stator and Armature Core (Wound Rotor) assembly. S.E. Copper wire is used for winding of Stator and Rotor. All the connections of Stator and wound Rotor are brought out on the Bakelite plate. Provision has been made to show the details of Stator, wound Rotor, Slipring and Scissors holder with Carbons and windings. All parts properly marked and the Model is a working one. The front and rear end cover should be covered with acrylic sheet with detachable hook clamp type for showing the internal parts of machine to student. Slipring Induction Motor 1 HP., 3 Phase, 415 v, 1440 RPM, 50 Hz with Rotor Resistance Starter 9 CUT SECTION MODEL OF 1-PHASE SQUIRREL CAGE INDUCTION MOTOR Cut Out model of Single Phase Squirrel Cage Induction Motor, should consist quarter cut section, including shaft of the enclosed cover to show the constructional details of the Motor. The Motor should be fitted on an appropriate size of M.S. channel frame. Stator winding and Aluminum BAR for ROTOR winding, should have provision of showing Rotor caging and Ring and Stator winding and Insulation. Clutch & Governor Assembly should easily visible. The capacitor terminals brought out for showing the working of capacitor and clutch. The Model should be working one and all parts should marked. The front and rear end cover should be covered with acrylic sheet with detachable hook clamp type for showing the internal parts of machine to student. AC Squirrel Cage Induction Motor, 1 HP. 1-phase, 220 V, 50 Hz, class “B” Insulation with DOL Starter 10 Possible LIST OF EXPERIMENTS:- 1) TO STUDY CONNECTION OF THREE PHASE INDUCTION MOTOR IN 2 & 4 POLE 2) TO STUDY DIRECTION REVERSAL BY CHANGE OF PHASE SEQUENCE 3) TORQUE SLIP CHARACTERISTICS OF THREE PHASE INDUCTION MOTOR MACHINE REQUIRED THREE PHASE INDUCTION MOTOR THREE PHASE INDUCTION MOTOR Power - 2 HP No. of Poles - 2, 4 combination No. of Phases - 3 Phase, 415V Applied Voltage - 415 Auxiliaries - Connector with copper terminals lugs & standard winding diagrams & table Booklet. Display - Connection of each coil brought over to a circular Bakelite sheet. Insulation - Class “B” Mechanical Loading - Loading of the Motor shall be made through Pronney brake arrangement, consisting of a C.I. drum pulley, suitable for water cooling, Calibrated Digital Linear Sensor with LCD Display for torque, weight in kg and diameter of the pulley, canvas belt with hooks, C.P. wheels with threaded studs for tightening the belt, frame. The pronney brake loading arrangement should be flexibly coupled (through Love-Joy coupling) to shaft of the motor so that motor is easily detachable from the mechanical loading arrangement as and when required. The Control panel should be fitted with the instruments mentioned below: (i) Digital AC Voltmeter, 0-500V – 1 No. (ii) Digital AC Ammeter, 0-5A – 1 No. (iii) Digital LCD Meter for Measurement of Torque, Weight, Diameter of Pully & RPM – 1 No. (iv) TPN MCB 10 Amp – 01 No. (v) Indicating Lamps LED type 16 mm dia – 3 Nos. (vi) DOL Starter – 01 No. (vii) Insulating Terminals. (viii) Patch chords. (ix) Instruction manual The Control panel should be provided to fit the instruments mentioned below of Size L - 1220mm x H- 610mm x D - 230mm. The control panel should be mounted on M.S. Angle frame of size 35mm x 35mm x 4mm of height 760 mm with provision for grouting on floor through fasteners. The frame should have extended platform with hinges made of 19mm ply board with sun mica fitted top of size 1220mm x 305mm. 11 STUDY OF SYNCHRONOUS GENERATOR MACHINES REQUIRED : MG SET : D C SHUNT MOTOR/3 PHASE ALTERNATOR DC Motor Type - DC Shunt wound, screen protected. Horizontal foot mounted. Capacity - 2 HP RPM - 1500 to be displayed on Panel Board using Proximity Sensor fitted on shaft Volts - 230 Insulation - Class “B” Cooling -Fan cooled Connections - All the terminals of armature and shunt field shall be brought over to a Bakelite sheet, fixed to C.I. terminal box, fitted on top of Motor. Tubular Rheostat 1.4 Amp, 260ohm – 1 No Alternator Type - Salient pole type (Dove Tail type construction with damper windings), 3-phase 4 wire screen protected, horizontal foot mounted, fan cooled, separately excited with damper winding. Capacity - 1 KVA RPM -1500 for max output and frequency of 50 Hz Volts - 415V Insulation - Class “B” Frequency - 50 Hz Power factor - 0.8 p.f lagging Connections - 3 phase 4 wire Base Plate Motor and Generator will be mounted on fabricated base plate of MS channel base. Coupling : Motor and Generator are coupled with a flexible tire coupling & mounted on a common M.S. base. Coupling guard is also provided Control Board :- Rust free powder coated control board made up of high grade Fiber molded body (FRP) of minimum thickness 4 mm for better safety and in compliance with IS3021/IEC60335-1. Shock proof banana jack terminal (BS-10), BS10 safety terminals are in compliance with IS302-1/IEC60335-1. The Enclosure should be open from front side for fitting of Engraved diagram Bakelite plate The Control panel should be fitted with the instruments mentioned below: FOR DC MOTOR (i) Digital DC Voltmeter, 0-300V – 1 No. (ii) Digital DC Ammeter, 0-10A – 1 No. (iii) Digital RPM Meter with Proximity Sensor – 01 No. (iv) 3 Point DC Starter 2 HP, suitable for above motor – 01 No. (v) Indicating Lamps LED type 16 mm dia – 1 No. (vi) DP MCB suitable for DC operation on 16 Amp, 220V - 01 No. (vii) Inbuilt Variable DC Power Suppy 0-220V, 15 Amp & 2A, 220V (Fixed) (viii) Insulating Terminals. (ix) Patch chords. (x) Instruction manual as per experiment FOR AC GENERATOR (i) Digital AC Voltmeter, 0-500V – 1 No. (ii) Digital AC Ammeter, 0-5A – 1 No. (iii) Digital Frequency meter, NABL Certified, – 1 No. (iv) Digital Multifunction Meter with graphical LCD display – 01 No. (v) Indicating Lamps LED type 16 mm dia – 3 Nos (vi) Insulating Terminals. (vii) Patch chords FOR EXCITOR (i) Digital DC Voltmeter, 0-300V – 1 No. (ii) Digital DC Ammeter 0-2A – 1 No. (iii) Indicating Lamps LED type 16 mm dia – 1 No. (iv) Field control separately excited unit suitable for above alternator (Static type) – 01 No. (v) Insulating Terminals. (vi) Patch chords. The Control panel should be provided to fit the instruments mentioned below of Size L - 1220mm x H- 610mm x D - 230mm. The control panel should be mounted on M.S. Angle frame of size 35mm x 35mm x 4mm of height 760 mm with provision for grouting on floor through fasteners. The frame should have extended platform with hinges made of 19mm ply board with sun mica fitted top of size 1220mm x 305mm. 1 Resistor 2 (a).Potentiometer/Variable Resistor (b). Rheostat 3 Capacitor Disc Electrolytic 4 Inductor 5 Transformer (Step- Down) 6 Diode 7 LED RED GREEN BLUE Yellow 8 IC (Chip) 9 Zener Diode 10 NPN Transistor 100 FET Transistor MOSFET Transistor 11 24SWG(Red/Green/ Black) (91 Meters/Roll) 12 Screwdriver Set 13 Twizzer 14 Bread board 15 Wire Cutter 16 Regulator ICs 17 DSO 18 Regulated DC Power supply 19 Digital Multimeter 20 Milliammeter (Analog) 21 Microampere meter (Analog) 22 Voltmeter (Analog) 23 Voltmeter (Analog) 24 Nano-ampere meter (Analog) 25 Nano-ampere meter (Digital) 26 Arbitrary Function Generator 27 Soldering & De- Soldering Station