Salient Features

• Facilitates generator protection using numerical generator protection relay.
• VFD drive used to control brushless prime mover's speed in manual mode.
• Multi function meters read the input voltage & frequency of generator output along with power analyser data. (optional)
• The Generator/ alternator coupled with prime mover have brought out six terminals from three phase 3 windings (RYBs). The every alternate terminal of RYB is shorted and connected together to form Star connection (Neutral) at the output of generator.
• The relay panel carries shrouded sockets to connect Generator Protection relay mounted below. The CT panel and PT panel provide necessary interface between real world & relay.
• Emergency stop mushroom switch is provided with security key lock on the profile rack.
• Facilitates easy and safe wiring by students due to use of 4mm sturdy Shrouded banana patch cords and shrouded socket arrangements for high voltage circuits
• Each panel has ABS molded plastic sturdy enclosure, and colorful screwless overlays showing circuits diagrams & its connection tag numbers for easy understanding and connection
• Set of Instructor Guide & Student Workbook.

Technical Specifications
Trainer can work in standalone mode with simulated grid sources consists of following panels.:

• Input 3 phase DOL Starter panel (EMT1x 1 No.]
  • 4 pole MCB of 415 V/20A.
  • DOL 16A Contactor with 230V/50Hz/11VA COIL
  • Bimetallic thermal O/L relay with range 9A - 15A
  • RYB inputs indicators.
  • 9 pin D (M) connector
  • Manual start / stop with local trip contact
  • Power ON LED indicator
  • Green SBS5 socket is provided for extend earth.
  • DC Volt meter & DC ammeter Panel (EMT6Bx 1 No.)
  • DC voltmeter 0-300VDC
  • DC ammeter 0-5A
  • 4A circuit breaker.
• Instrumentation power supply cum multichannel DPM panel (EMT8x 1 No.)
  • DC Multi Output power supply.
  • Supplies DC power to neighbouring signal conditioning circuit. panels like EMT9, CIP1, CIP2, MIT12, CE7 etc. through 20 pin FRC cable.
  • Provides 1 Ph. AC supply through 3 MCB's, 4A each to power up other panels in the rack.
  • Optionally Multichannel 4 position DPM for Speed, Torque etc.
  • Green SBS5 socket is provided for extend earth.
• Variable AC and DC supply panel (EMT23 x 1 No.)
  • Input 0-230VAC, 50Hz
  • Variable O/P: AC 0-270V/3A
  • Variable O/P: DC 0-250V/3A.
• IGBT Controlled VVVF Drive panel (EMT33A x 1 No.)
  • Input voltage: 3 phase, 415VAC. 50Hz
  • Output voltage: 3 phase 415VAC
  • Range (Frequency Control) : 0.1 Hz to 100 (400)Hz
  • Control Mode :Sine Wave PWM
  • Capacity : 10 HP
  • With Reverse And Forward Direction
  • 3 phase EMI Inductor.
  • Mod bus RS485 interface. (optional)
• 3 Phase Bidirectional Power cum Energy meter panel (EMT34 x 4 Nos.)
  • Bidirectional Multifunction
  • 3 phase 3/4 wire, 415VAC, CT Input 5A
  • LCD/LED display, Aux. supply 230V, 45-65Hz,5W
  • Measure V. I., Hz, Pf, KVA, KW, KWH
  • Green SBS5 socket is provided for extend earth.
• SCR Actuator (variable DC) cum sensor signal conditioning panel (EMT9) X 1 No.
  • Full bridge SCR based 0V-195V / 3 Amp cosine firing with linear characteristics.
  • Supports signal conditioning circuit for speed, torque in kg to give output 0-2.5Vdc (FS).
  • External control signal (0 - 2.5VDC) to set O/P volt (0-100VDC) to control excitation.
• Generator Protection Relay panel (EMT47B) x 1No.
  • Protections: Differential, Over current, Under/Over voltage, Under/Over frequency, Reverse power, Earth fault.
• CT panel (EMT48) x 1 No.
  • Consist of 5/5 Amp. CT 6 Nos.
  • Primary side of CTs are brought on 3 x 2 x 2 SBS-5 sockets.
  • Secondary side of CTs are Star connected in group of 3 & brought out on 4 x 2 SBS-5 sockets
• 415/110VAC, 50VA PT panel (EMT54) X 1 No.
  • Consisting of potential transformer,
  • Input 415VAC, star connected, Output 110VAC, star connected, 50VA.

Table top panels:

• Generator transformer Panel (EMT54B) X 1 No.
  • 3 phase power transformer with connection group Yy11,
  • Input 415VAC, Output 415VAC, 5KVA,
  • Secondary winding with tapping at +/-2.5% and +/-5%.
• 3 phase Squirrel cage Induction Motor Panel (EMT65) X 1 No.
  • Voltage: 3 phase Delta connected, 415 VAC, 50Hz,
  • Capacity/RPM /Terminals: 3HP/4 Pole m/c / 1500RPM/ 6 terminals.
  • Rotor Construction: Diecast Squirrel cage rotor.
  • Stator construction: 3x2 terminals,
  • Frame/ Mounting Shaft dia : 112 Frame, Chasis mounted 38mm dia. with easily swappable gear coupling.
• 3 phase Salient Pole Alternator Panel (EMT66) x 1 No.
  • Voltage : 3 phase, star connected, 415VAC, 50Hz
  • Capacity/RPM /Terminals : 3KVA/4 Pole m/c / 1500RPM
  • Rotor Construction: Rotor excited 180Vdc/2.65A, two terminals brought out on 2 slip rings mounted on shaft.
  • Stator construction: Six terminals brought out for star connection.
  • Frame/ Mounting Shaft dia : 132 Frame, Chasis mounted 28mm dia. With easily swappable gear coupling

.List of Experiments:

• Study of V curve & inverted V curve.
• Study of Generator performance chart.
• Study of generator protection for differential, over current, over/under voltage, over/under frequency, reverse power and earth faults using generator protection relay.

Mechanical Dimensions (mm)& Weight of Trainer:

• 1165(L)x300(W)x990(H)
• Net. Wt.: 65 Kg.
• Gross Wt.: 73 Kg.
• 3 Ph. Sq. Cg. motor Net Wt.: 40 kg.
• Gross Wt.: 52 kg.
• 3 Ph. Salient alternator Net Wt.: 35 kg. Gross Wt.: 47 Kg.