vi micro system

Ref: V11/QTN/3295 Dated : 15-Nov-2011

THE PRINCIPAL,INDUS COLLEGE OF ENGINEERING,INDUSVALLEY,KALIMANGALAM,ALANDURAI, COIMBATORE- - 641 101.

Kind Attn. : HOD OF EEE DEPARTMENT

Dear sir,

As desired by you, we are pleased to enclose our QUOTATION for your favourable consideration.

We believe that you will find our offer as quite attractive and cost effective to your needs. Incase you require any further clarifications or details please do feel free to contact us.

Looking forward to receive your valuable order.

Thanking you and assuring of our best services.

Yours faithfully,For Vi Microsystems Pvt. Ltd.,

Dy MANAGER MARKETING

Ref: V11/QTN/3295 Dated : 15-Nov-2011

THE PRINCIPAL,INDUS COLLEGE OF ENGINEERING,INDUSVALLEY,KALIMANGALAM,ALANDURAI, COIMBATORE- - 641 101.

QUOTATION 1.VI SWITCHING CHARACTERISTICS OF SCR

&2. VI SWITCHING CHARACTERISTICS OF MOSFET

&3. VI SWITCHING CHARACTERISTICS OF TRIAC

&4. VI SWITCHING CHARACTERISTICS OF IGBT

a) SCR, MOSFET, IGBT & TRAIC – STATIC CHARACTERISTICS MODULE:

MAKE : VI MICROSYSTEMSMODEL : PEC16M1-A

The static (VI) characteristics of the devices SCR, MOSFET, IGBT & TRAIC can be studied using this module.

FEATURE:

Consists of power devices SCR, TRAIC, MOSFET, IGBTTwo no. of 12V fixed DC power supply and one no of 30V fixed power supply for characteristics study of all devicesTwo no of potentiometer to vary the gate/base currentFixed load resistorLED indication for 12V, 30VPower on/off switch providedAll necessary points terminated in the front panelProvision for connecting ammeter and voltmeter3 meters (multimeter) are provided to measure the various power devices current and voltage to find the static characteristics.

Rs. 8,825.00 + VAT @ 5%

b. DYNAMIC CHARACTERISTICS OF SCR & TRIAC

MAKE : VI MICROSYSTEMSMODEL : VPET 216A

This set up is designed to study the TURN ON & TURN OFF Characteristics (Dynamic characteristics) of SCR and TRIAC devices. This set up consists of

One number of SCR with proper heat sink is providedOne number of TRIAC with proper heat sink is provided

One no of Square wave pulse generator circuit is provided for SCR, TRIAC Gate circuitOne no of potentiometer is provided for Gate circuit Square pulse amplitude adjustmentsOne number of Fixed R Load is provided for SCR circuitOne number of Fixed R Load is provided for TRIAC circuitCurrent sensing resistor is provided for SCR, anode current measurementCurrent sensing resistor is provided for TRIAC, current measurementOne number of Square wave pulse generator circuit is provided for SCR, Anode cathode circuit & TRIAC circuitAll necessary block outputs are terminated by 4 mm connectors by external patchingAll are mounted on wood box with diagram printed PCB230V AC input with power ON / OFF switch

Rs. 8,825.00 +VAT @ 5%

c. DYNAMIC CHARACTERISTICS OF MOSFET, BJT & IGBT

MAKE : VI MICROSYSTEMSMODEL : VPET 216A1

This set up is designed to study the TURN ON & TURN OFF Characteristics (Dynamic characteristics) of power devices like MOSFET, IGBT & BJT devices. This set up consists of

One number of MOSFET with proper heat sink is providedOne number of BJT with proper heat sink is providedOne number of IGBT with proper heat sink is providedOne no of Square wave pulse generator circuit is provided for power devices Gate circuitOne number of variable DC Voltage circuit is provided for power device input One number of potentiometer is provided for DC voltage adjustmentsOne number of Fixed R Load is provided for MOSFET circuitOne number of Fixed R Load is provided for BJT circuitOne number of Fixed R Load is provided for IGBT circuitCurrent sensing resistors are provided for all devices collector current measurementAll necessary block outputs are terminated by 4 mm connectors by external patchingAll are mounted on wood box with diagram printed PCB230V AC input with power ON / OFF switch

Rs. 8,825.00 +VAT @ 5%

5.SINGLE PHASE SCR HALF CONTROLLED CONVERTER

MAKE : VI MICROSYSTEMSMODEL : VPET-204

This unit is designed to study the working principle of Single phase SCR half-controlled converter with R & RL load. It consists of

(1)Single phase SCR firing circuit(2)Single phase SCR power circuit(3)Load

1. SINGLE PHASE SCR FIRING CIRCUIT

* TCA 785 Based Single phase firing pulse generator* 9V step –down transformer provided for supply synchronization.* One number of potentiometer provided for firing angle adjustment (180-0º)* Two numbers of 1:1 pulse transformer provided for SCR pulse isolation

* Gate carrier logic provided for SCR self starting* One no. toggle switch provided for pulse on/off* Pulse output terminated in the PCB for SCR power circuit patching.* +15V DC @ 1amp provided for control circuit.

2. SINGLE PHASE SCR POWER CIRCUIT* Two no of TYN-612 SCR with proper snubber & heat sink provided for power circuit* Two number of power diode @ 600v 5A rating provided for power circuit.* Two number of banana connector provided for AC input.* Two number of banana connector provided for external load connection.

* One number of fuses provided at dc output side for over load protection.* One number of switch provided for input AC on/off

3. RL LOAD & ACCESSORIES

* One number of fixed R provided for resistive load.* One number of fixed L-provided for inductive load.* One number of step-down transformer provided for power circuit input.

Input: 0-230V ACOutput: 0-24V AC @ 2amp

* All are mounted on a wooden cabinetRs. 8,825.00 +VAT @ 5%

6. SINGLE PHASE SCR FULLY CONTROLLED CONVERTER


This unit is designed to study the working principle of Single phase SCR Fully-controlled converter With R & RL load. It consists of

1. Single phase SCR firing circuit2. Single phase SCR power circuit3. Load

1. SINGLE PHASE SCR FIRING CIRCUIT* TCA 785 Based Single phase firing pulse generator* 9V step –down transformer provided for supply synchronization.* One number of potentiometer provided for firing angle adjustment (180-0º)* Four numbers of 1:1 pulse transformer provided for SCR pulse isolation* Gate carrier logic provided for SCR self starting* One no. toggle switch provided for pulse on/off* Pulse output terminated in the PCB for SCR power circuit patching.* +15V DC @ 1amp provided for control circuit.

2. SINGLE PHASE SCR POWER CIRCUIT* Four number of TYN-612 SCR with proper snubber & heat sink provided for power

circuit* Two number of banana connector provided for AC input.* Two number of banana connector provided for external load connection.

* One number of fuse provided at dc output side for over load protection.* One number of switch provided for input ac on/off* Four number of pulse connector provided for SCR gate pulse input.

3. RL LOAD & ACCESSORIES* One number of fixed R provided for resistive load.* One number of fixed L-provided for inductive load.* One number of step-down transformer provided for power circuit input.

Input: 0-230vacOutput: 0-24vac @ 2amp

* All are mounted on a wooden cabinetRs. 8,825.00 +VAT @ 5%

7. STEP UP AND STEP DOWN CHOPPER.

DC -DC BUCK-BOOST CONVERTER TRAINERMAKE : VI MICROSYSTEMSMODEL : VSMPS-07A

This set-up is designed to study the working principle of buck-boost dc-dc converter. It consists of

a. Buck-boost converter PWM control circuit.b. Buck-boost converter power circuit.c. 0-30v dc power supply for power converter input.

a. BUCK-BOOST CONVERTER PWM CONTROL CIRCUIT:

* TL494 based PWM controller for converter PWM generation.* One number potentiometer provided for set voltage adjustment.* One number of dpdt switch provided for open loop/closed loop selection.* One number of dpdt switch provided for buck-boost mode selection.* One number of pulse socket provided for feed back voltage-interface* One number of pulse socket provided for PWM output- interface.* Varies test points provided for waveform measurement.* Circuit diagram printed in the front panel PCB.* One number of power on/off switch with indicator.

b. BUCK-BOOST CONVERTER POWER CIRCUIT:

* One number of IRF250 power MOSFET provided for power device.* High speed opto provided for MOSFET PWM isolation.* IR2110 IC provided for MOSFET PWM driver.* One no of high-frequency inductor and capacitor and diode provided for power circuit* One number of output voltage divider circuit provided for feed -back voltage.* One number of pulse socket provided for feed back voltage-output.* One number of pulse socket provided for PWM input.* One number of fixed R-provided for load resistor.* Low value (0.2e) resistor provided in varies sections of power circuits for current

wave-form measurement.* Banana connectors provided for power circuit input and outputs.* Fuse provided for output side for over load protections.* Specifications:

# Input : 0-15vdc# Output: 0-30V DC@ 0.5A (boost – step up) 5VDC@1Amp (buck-step down).

c. 0-30V VARIABLE DC SUPPLY FOR POWER CIRCUIT INPUT:* Lm723 based variable dc power supply.* 0-30vdc output @ 2amp capacity.* One number of potentiometer provided for output voltage variation.* One number of potentiometer provided for output current variation.* One number of led display provided for o/p voltage / current measurement.* Built in over-current limit facility.

Rs. 22,100.00+VAT @ 5%

8. SINGLE PHASE IGBT INVERTER

a) Single Phase IGBT Moduleb) Single Phase PWM Inverter Control Module c) Load

a) Single Phase IGBT Module

MAKE : VI MICROSYSTEMSMODEL : PEC16M3

This module consists of four IGBTs with gate driver. The gating signals are given as an input from an appropriate control module.

FEATURES Built in power supplies for the gate driver circuitry and the power circuit ±15V @ 1A

and 24V @ 2A

The power suppliers are obtained through an isolation step down transformer after

rectification and filtering

* Gating signals are isolated using opto isolators

The IR2110 gate drive IC’s are used for driving the gates

* Over current protection is provided through the gate drive IC

All terminals of the devices and 24V power supply terminals are brought out to

banana sockets mounted at the front panel

Various converter configurations (single, Two or four quadrant chopper, single phase

inverter) can be made by properly interconnecting the devices by using patch cards

The devices are of IRGBC20S, rated at 600V, 19A

Snubber circuit are provided for each of the devices to protect against high dv/dt

A hall effect current transducer (optional) can be provided for sensing the load

current for control purposes as well as to provide protection

The mimic diagram showing the terminals of all the devices is screen printed in

the front panel for easy wiring

b). Single Phase PWM Inverter Control Module

MAKE : VI MICROSYSTEMSMODEL : PEC16M4#1

This module provides the gating signals for a single phase full bridge inverter obtained through an appropriate pulse width modulation (PWM) technique.

FEATURES:

Sinusoidal PWM, trapezoidal PWM, staircase pulse width modulation and hysteresis

current control PWM techniques are provided

Any one of the PWM patterns can be selected through a selector switch

The inverter output voltage and fundamental frequency can be controlled

The block schematic of the generation of the gating signals is screen printed at the

front panel for easy understanding

Test points are provided to check the waveforms at various stages of the PWM

circuitry

The gating signals are terminated at a nine pin connector.

Built-in power supplies for the control circuitry , ±15V & 5V

The module is bought out in a sleek box

c) RL Load :

25W Resistive Load.

100mH/1A Inductive Load

Rs. 23,530.00 +VAT @ 5%

9. THREE PHASE IGBT INVERTER

To conduct the above experiments the following set up can be used

a.Three phase IGBT Based Power Module (VPET-106A)b.Chopper/Inverter PWM Controller (PEC16HV2B)

a. THREE PHASE IGBT BASED POWER MODULE (Model: VPET-106A)

This module consists of Six Numbers of IGBT with gate driver In A Single Chip Called Smart Power Module (SPM). & PWM isolator IC’S. The gating signals are given as an input from an external control module (optional). it can be used for high voltage single phase / Three phase inverter , chopper, motor control application .

Features :

* Six Numbers of High speed opto - isolator provided for PWM isolation

* One Number of IGBT -SPM FSBB20CH60-with suitable snubber circuit & Heat sink provided for power circuit

* Rating of device is 600V@20AMP

* Isolated +15V DC @ 1A provided for control IC’s

* One number of Single phase diode rectifier (600v 25a) with filter capacitor provided for input ac rectification, for power circuit input with fuse protection

* One number of Analog voltmeter provided for dc rail voltage measurement.

* Over current Trip circuit provided for Over Load protection.

* One number of Led provided to indicate TRIP Status

* One number of Reset Switch provided to reset the Trip Function

* Six Numbers of banana connector termination provided in power circuit Input & external load interface

* One numbers of 15 pin connector provided for PWM Interface from external controller

* No of test points provided in control section for waveform measurement in CRO

* All are mounted in attractive powder coated cabinet with sticker front panel with mimic diagram indication.

* 230v ac input, one number of power on / off switch with indication.

SPECIFICATION :

Power circuit input : 230V AC / 300V DC @ 4amp (externally)

Power Circuit Output : Suitable for 1HP AC / DC motor

PWM input : 6 Numbers of PWM – 5VDC level

Protection : 5Amp.

b. CHOPPER / INVERTER PWM CONTROLER (Model: PEC16HV2B)

This module provides PWM signals for IGBT / MOSFET chopper / Inverter Fed AC / DC drive with Open loop & Closed loop. Power Module & motor should be Purchased Separately.

FEATURES:

* One number of Digital Controller (Dspic30f4011) provided for PWM Generation. Microchip’s dsPIC30F4011 16 bit digital signal controller operating at 33 nS & 30 MIPS On chip-motor control peripherals 6 motor control PWM unit with programmable dead band , quadrature Encoder interface

Memory (On-chip)

# 48K Flash program memory

# 2K RAM for data memory

# 1K EEPROM memory

Additional features

# On chip serial port and the serial port lines are isolated

# ADC input lines are protected and terminated

# Bead inductances are provided at Vcc & GND for EMI rejection

* Five Number of Touch Key Provided for PWM Mode Selection

* One number of LCD provided to indicate Motor set speed, actual speed, chopper mode etc

* One Number of toggle switch provided for PWM Enable / Disable selection

* +5V 1Amp isolated dc supply provided for control circuits.

* All are mounted in a nice powder coated cabinet with stickered front panel with mimic diagram indication

* 230VAC input, one number of power On/Off switch with indication

* One number of 15 pin connector provided for PWM output to external power module

* One number of 9 pin connector provided for Speed sensor Interface

* Numbers of test points provided in the front panel for waveform measurements.

OUTPUTS: 6 PWM’s for Inverter Application

Load:

* 3 Phase, 0.5Hp AC Induction Motor with loading arrangement

Rs. 52,210.00 +VAT @ 5%

10. RESONANT DC-TO-DC CONVERTER


* Consists of resonant converter power circuit and firing circuit* TL494 IC Based PWM generator* One No of Potentiometer provided for PWM Frequency Variation* Four Nos of Isolated gate PWM provided for MOSFET Switching* High Speed opto provided for PWM Isolation* IR2110 IC used as MOSFET gate drive* PWM O/P terminated in the Front panel* Necessary test points provided in the panel for* Control circuit waveform measurement

Power circuit* IRF 840 MOSFET Provided for Power circuit* One No of L&C provided for power circuit series/parallel Resonant converter

configuration* Diodes provided for O/p rectifier and L,C provided for filter (O/P)* One No of 24V unregulated DC supply provided for power circuit input

* ZVS & ZCS Switching

Experiment:* Series Resonant converter

Rs. 23,530.00+VAT @ 5%

11. VOLTAGE AND CURRENT COMMUTATED CHOPPER.

MAKE : VI MICROSYSTEMSMODEL : PEC14M14CH #1

CHOPPER FIRING CIRCUITThis module generates 2 isolated gate signals for 2 SCRs and housed in a sleek box with circuit mimic diagram Screen printed in the front panel for easy study of students.

2 Isolated gate signals for 2 SCRs Isolation through pulse transformer Provision to vary the duty cycle ratio from 10% to 90% 2 switch provided to release in developed by the gate signals to the to SCRs Circuit mimic diagram is screen printed on front panel Housed in a sleek cabinet Test points are provided on the front panel for detailed study of circuit signals by the

student Necessary test points are terminated at sockets so that the student can monitor/

measure / study the signals using CRO, DVM, etc.

POWER DEVICE CIRCUIT Two nos. of SCRs rated for 600Volts – VAK & 12Amps IA

One no. of power diodes rated for 600V & 4Amps Each device is provided with

# RC Snubber for dv/dt protection# Fuses to avoid overload

All the G, A, K & MT terminals are terminated on connectors to use patch chords to form any Converter / Inverter circuitry.

24V DC @ 2Amp regulated output for DC Chopper LC Inductance: 120 H @ 1Amp One commutation capacitor Used for various commutation circuits in chopper circuit One fixed load Resistance

Rs. 16,920.00 +VAT @ 5%

12. FOUR QUADRANT CHOPPER


b) Four Quadrant Chopper PWM Control c) 24V PMDC Motor Load



This module consists of four IGBTs with gate driver. The gating signals are given as an input from an appropriate control module.

FEATURES

* Built in power supplies for the gate driver circuitry and the power circuit ±15V @

1A and 24V @ 2A

The power suppliers are obtained through an isolation step down transformer after

rectification and filtering

Gating signals are isolated using opto isolators

The IR2110 gate drive IC’s are used for driving the gates

Over current protection is provided through the gate drive IC

All terminals of the devices and 24V power supply terminals are brought out to

banana sockets mounted at the front panel

Various converter configurations (single, Two or four quadrant chopper, single phase

inverter) can be made by properly interconnecting the devices by using patch cards

The devices are of IRGBC20S, rated at 600V, 19A

Snubber circuit are provided for each of the devices to protect against high dv/dt

A hall effect current transducer (optional) can be provided for sensing the load

current for control purposes as well as to provide protection

The mimic diagram showing the terminals of all the devices is screen printed in

the front panel for easy wiring

b) Four Quadrant Chopper PWM Control

MAKE : VI MICROSYSTEMSMODEL : PEC16HV3

This module provides Four quadrant Chopper PWM signals for IGBT / MOSFET chopper Fed dc drive , Open loop & Closed loop speed control PWM’s. Power Module & motor should be Purchased Separately.

Features:* One number of Pre programmed Digital Controller provided for PWM Generation.

* One number of potentiometer provided Field PWM Duty cycle adjustment.

* One number of potentiometer provided for Armature PWM Duty cycle adjustment

* Four Number of Toggle Switch Provided for Chopper Mode Selection (FR-FB-RR-RB)

* Four Number of led Provided for Chopper Mode Indication ( FR-FB-RR-RB )

* One Number of toggle switch provided for Chopper / Speed control Mode selection

* One Number of toggle switch provided for Open / Closed Loop Mode selection


* +5v 1Amp isolated dc supply provided for control circuits.



* One number of 15 pin connector provided for PWM output to external power module

* One number of 9 pin connector provided for Speed sensor Interface

* One number of LCD provided to indicate Motor set speed , actual speed, chopper mode etc

* 8 Numbers of test points provided in the front panel for waveform measurements.

OUTPUTS: 6 number of PWM’s for Armature & Field

c) 24V PMDC MOTOR LOAD

MODEL : PEC LV ACC3B

Volt 24V DCAmp 1.25A DCTorque –1KgcmSpeed 1500 rpmDouble side shaft extension

(NOTE : The above motor can be work with IGBT Based chopper Experiment only)Rs.35,300.00 +VAT @ 5%

13. THREE PHASE AC VOLTAGE CONTROLLERS

MAKE : VI MICROSYSTEMS

This trainer consists of two modules can be used to study all types of single phase half & fully controlled bridge converters and single phase AC regulator. It consists of two following modules

i. Chopper / Inverter PWM Controllerii.Three Pahse SCR Power Circuit iii Load

The details of each module are as follows.

i. Chopper / Inverter PWM Controller ( PEC16HV2B ) This module provides PWM signals for IGBT / MOSFET chopper / Inverter Fed DC/AC drive with Open loop & Closed loop control. It can also service gate signal for 6 SCRs. The corresponding synchronous required signal will be from PEC14HV4D OR PEC14HV5P.Power Module & motor should be Purchased Separately.

FEATURES:

* One number of Digital Controller (Dspic30f4011) provided for PWM Generation. Microchip’s dsPIC30F4011 16 bit digital signal controller operating at 33 nS & 30 MIPS On chip-motor control peripherals 6 motor control PWM unit with programmable dead band , quadrature Encoder interface

Memory (On-chip)



# 1K EEPROM memory

Additional features



# Bead inductances are provided at VCC & GND for EMI rejection


* One number of LCD provided to indicate Motor set speed, actual speed, chopper mode and


* +5V @1Amp isolated dc supply provided for control circuits.



* One number of 15 pin connector provided for PWM output or SCR gate signals to external power module

* One number of 9 pin connector provided for Speed sensor Interface for motor control applications.

* 7Numbers of test points provided in the front panel for waveform measurements.

ii. THREE PHASE SCR POWER CIRCUIT [PEC14HV5P] Six SCRs each rated at 1200V @ 25A, each SCR is provided with RC snubber The SCRs mounted on suitable heat sinks and placed inside a nicely designed cabinet Three Diodes each rated at 1200V @ 25A Each diode is provided with RC Snubber The diodes are mounted on a suitable heat sinks Facilities are provided for switching ON/OFF, the AC supply to the converter circuit

with fuse and miniature circuit Breaker protection Front panel provisions SCR and diode points are terminated at sockets for easy wiring by patch chords to

form half or full bridge converter and AC regulator Various circuit configurations like half and fully controlled bridge can be wired by

Interconnecting the devices using patch cords

Other Features:* One free wheeling diode provided and terminated at 2 Banana connectors for DC Motor load

* RYB inputs through 3 Banana connectors and 3 LEDs (R,Y&B) provided to indicate R, Y & B inputs. 3 inputs through 3 pole MCB for over current protection

Pulse Synchronosing Section:* 3 φ Step-down transformer provided with OP-AMP zero crossing Detector circuitry for generating 3 synchronous reference signals which will be used by the Embedded controller (inside PEC16HV2B) to generated gate pulses for the l6 SCRS.* 6 gate pulse from PEC16HV2B is pulse amplified and pulse isolated and terminated at

miniature sockets, which can be separately studied or which can be wired by patch chords to corresponding gates of 6 SCRs

SPECIFICATION :

OUTPUTS:6 number of pulses for ACX voltage regulator

iii. LOAD:* Three number of 25w lamp fixed on the Acrylic sheet.* Three number of banana connector provided for load input.* 100mH / 1A Fixed Inductive load

Rs. 33,825.00 +VAT @ 5%

14. SERIES AND PARALLEL INVERTER.

a. Single Phase Series Inverter


This set up is designed to study the working principle of SCR based series inverter. It consists ofa Series inverter firing circuitb.Series inverter power circuitc.24V DC power supply

a & bSeries Inverter Firing Circuit & Series Inverter Power Circuit

Two no of TYN 612 SCR with snubber circuit and suitable provided for power circuit

One no. of high frequency center tapped inductor provided for power circuit One no. of center tapped capacitor provided for power circuit All SCR, inductor, capacitor forms IMPROVED SERIES INVERTER power circuit All SCR, inductor, capacitor terminals are terminated in the PCB for power circuit connection SCR pulse inputs are terminated in the PCB for triggering pulse input out-put Filter One no. of high frequency inductor and capacitor provided for L-C filter Can be used for output wave form filtering Filter input and outputs are terminated by banana connector

c. 24VDC POWER SUPPLY

LM723 based linier power supply

Output 24V DC, 2Amp with over load & short circuit protection One fixed resistive load will be provided.

All components are mounted on a nice PCB fixed with cabinet, 230V AC input, +15V DC for control circuit

Rs. 13,240.00 +VAT @ 5%

b. SCR PARALLEL INVERTER (SINGLE PHASE)


Input : 24V DC, 2Amp Output Voltage : a. 230V AC, 50VA b. 24V AC, 50VA Output Frequency : 50Hz to 100Hz ( variable)

It consists of 3 separate sections which as followsa) Parallel Inverter firing circuitb) SCR power circuitc) 24V DC power supply

a. PARALLEL INVERTER FIRING CIRCUIT

4046 VCO based square wave generation with adjustable frequency ( 50-100 Hz) Square wave modified into short pulses by control Ics Two no. of 1:1 pulse transformer provided for pulse isolation Pulses imposed with high frequency square (4KHz) for SCR self start 7 nos. of test points provided for signal test/ measure purpose

b. POWER CIRCUIT

consists of 2 no. of SCRs rating at 600V, 12A with heat sink is provided Two no. of power diode provided One no, of output transformer is provided One no. of iron core inductor is provided (100mH, 1Amp) One no. of fuse is provided for over load protection One no. of AC capacitor provided for commutation

c. 24V DC Power Supply

LM723 based fixed power supply Rating : 24V DC @ 2Amps One no. of toggle switch provided for DC ON/OFF One LED indication Current fold back facility provided for output over current/short circuit

DOCUMENTATION SUPPORT

One no. of technical / user manual with circuit diagram

EXPERIMENTS

Study of parallel inverter firing circuit Study of SCR parallel inverter with different frequency Calculation of SCR turn ON/OFF time of SCR parallel inverter

PROTECTION Output over load or short circuit protection

INPUT 230V AC + 5%, 50Hz operation

Rs. 14,710.00 +VAT @ 5%

FOR ITEM NO: 15 & 16

THREE PHASE SCR HALF & FULLY CONTROLLED BRIDGE CONVERTER

MAKE : VI MICROSYSTEMS

This trainer consists of two modules can be used to study all types of single phase half & fully controlled bridge converters and single phase AC regulator. It consists of two following modules.

i. Chopper / Inverter PWM Controllerii. Three phase SCR power circuit iii. Load

The details of each modules are as follows.

i. Chopper / Inverter PWM Controller ( PEC16HV2B ) This module provides PWM signals for IGBT / MOSFET chopper / Inverter Fed DC/AC drive with Open loop & Closed loop control. It can also service gate signal for 6 SCRs. The corresponding synchronous required signal will be from PEC14HV4D OR PEC14HV5P.Power Module & motor should be Purchased Separately.

FEATURES:* One number of Digital Controller (Dspic30f4011) provided for PWM Generation.

Microchip’s dsPIC30F4011 16 bit digital signal controller operating at 33 nS & 30 MIPS On chip-motor control peripherals 6 motor control PWM unit with programmable dead band , quadrature Encoder interface

Memory (On-chip)



# 1K EEPROM memory

Additional features



# Bead inductances are provided at VCC & GND for EMI rejection


* One number of LCD provided to indicate Motor set speed, actual speed, chopper mode and


* +5V @1Amp isolated dc supply provided for control circuits.



* One number of 15 pin connector provided for PWM output or SCR gate signals to external power module

* One number of 9 pin connector provided for Speed sensor Interface for motor control applications.

* 7Numbers of test points provided in the front panel for waveform measurements.

ii. THREE PHASE SCR POWER CIRCUIT [PEC14HV5P] Six SCRs each rated at 1200V @ 25A, each SCR is provided with RC snubber The SCRs mounted on suitable heat sinks and placed inside a nicely designed cabinet Three Diodes each rated at 1200V @ 25A Each diode is provided with RC Snubber The diodes are mounted on a suitable heat sinks Facilities are provided for switching ON/OFF, the AC supply to the converter circuit

with fuse and miniature circuit Breaker protection Front panel provisions SCR and diode points are terminated at sockets for easy wiring by patch chords to

form half or full bridge converter and AC regulator Various circuit configurations like half and fully controlled bridge can be wired by

Interconnecting the devices using patch cords

Other Features:* One free wheeling diode provided and terminated at 2 Banana connectors for DC Motor load* RYB inputs through 3 Banana connectors and 3 LEDs (R,Y&B) provided to indicate R, Y & B inputs. 3 inputs through 3 pole MCB for over current

protection

Pulse Synchronosing Section:* 3 φ Step-down transformer provided with OP-AMP zero crossing Detector circuitry for generating 3 synchronous reference signals which will be used by the Embedded controller (inside PEC16HV2B) to generated gate pulses for

the l6 SCRS.* 6 gate pulse from PEC16HV2B is pulse amplified and pulse isolated and terminated at miniature sockets, which can be separately studied or which can

be wired by patch chords to corresponding gates of 6 SCRs

SPECIFICATION :OUTPUTS:6 number of pulses for ACX voltage regulator

iii. LOAD:

* Three number of 25w lamp fixed on the Acrylic sheet.* Three number of banana connector provided for load input.* 100mH / 1A Fixed Inductive load

Rs. 33,825.00 +VAT @ 5%

FOR ITEM NO : 17 TO 21 NOT QUOTING

TERMS AND CONDITIONS

1. VAT : @ 5%

2. VALIDITY OF OFFER : THIS OFFER IS VALID FOR 90 DAYS FROM THE DATE OF OFFER.

3. TERMS OF PAYMENT : 50% ADVANCE AND REMAINING 50% AGAINST DELIVERY.

4. DELIVERY : WITHIN 10-12 WEEKS FROM THE DATE OF RECEIPT OF YOUR ORDER AND PAYMENT .

5. WARRANTY : ONE YEAR FROM THE DATE OF DELIVERY.

6. INSURANCE CHARGE : NIL

7. PACKING ANDFORWARDING. : NIL

8. INSTALLATION &DEMONSTRATION. : FREE OF COST.

For Vi Microsystems Pvt. Ltd.

Dy. MANAGER MARKETINGTNGST NO.:1580314CST NO.:42596.

vi micro system

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