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3Ø – 3Ø Matrix Converter

FEATURES:

• 9 No. Bi-directional Switch with IGBT and Fast Diode Bridge,Rating@1200V 50A Forms 3 Phase to 3 phase Matrix Converter Power Circuit • Output of Matrix Converter Terminated by Banana Connector in the Front Panel • 9 No. High Speed Opto- IC Provided for Gate PWM Isolation. • 9 No. Single Channel IGBT Driver IC with Current Limiting Facility Provided for IGBT Gate Driving. • 9 No. 15V DC Power Supply Provided Internally for Control Circuit. • 3 No. Inductor and AC Capacitor Provided for Three Phase Input Filter. • One No Three Phase Synchronizing Transformer (230/9V) Provided for three Phase Supply Synchronization • 6 nos Hall-effect Current Sensor with Signal Conditioning Circuit Provided for Output and Input Current Measurement and Protection. • AC voltmeter is provided for measure the input AC voltage. • +/- 15V DC Internally Provided for Sensor Signal Conditioner Circuits. • MCB Provided for Input power ON/OFF and OL Protection ON/OFF Switch. • Test points are provided on the front panel to measure the voltage, current and PWM signals • 34 pin FRC Connector Provided for IGBT Gate PWM Inputs. • Input : Three Phase 440V AC, 50 Hz. • Output : Three Phase Variable Voltage, variable frequency • Rating : Suitable for 1 HP 3Ø AC Induction Motor

Ray Box

Description

To provide a simple means of producing single or multiple rays of light for use in elementary optics. Made of die-cast alloy, the ray box has an open front and vertical internal grooves to accommodate a slit plate and a cylindrical lens. Supplied complete with a metal plate having single and triple slits, a 12 V 24 W SBC line filament lamp and a lamp holder.

Cytology

Description

All Charts are made on PVC rexine, hand drawn, waterproof, in fast multi colors with a black background. Each chart is provided with rollers to hang on wall. Size 75×100 cm. Cell Membrane showing structure & functions Cell Wall, showing structure & functions Endoplasmic Reticulum showing structure & functions Mitochondrion – showing structure & functions Golgi Complex showing structure & functions Chloroplast – showing structure & functions Nucleus – showing structure & functions Chromosome – showing structure & functions D.N.A. – showing structure & functions R.N.A. – showing structure & functions
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DC Network Analyzer

Specification

• Here we provide the bi-polar Transmission Line. • Simulated long, medium & short distribution lines selectable by patching in various length of DC Transmission line • Two no of bi-polar DC generator sources with ON/OFF control and voltage regulator potentiometer. - Two wire or Three wire Transmission Line operated in +12V DC - Each DC generator are independently control by potentiometer. • 2 digital voltmeters and ammeters provided in the input side and 2 digital volt meters and ammeters are provided in the output side • of transmission line to read the input & output parameters of transmission line. • One no of microcontroller based measuring system provide to read the input and output parameters. • 4 nos of digital ammeters provided to read the load current • 4 nos of resistive load and 4 nos of lamp loads are provided to load the transmission line.

Set of Springs

Set of springs are flexible with hooks on both sides.

Double ‘C’ Core & Clip

Description

As used in Westminster Electromagnetic Kit. Size 90 x 50 x 22 mm

PLC-SIE2 with Demo Panel Training Kit

This trainer consists of PLC, Demonstration Panel & Programming Software.

PLC Specification

• Make : SIEMENS • Model : CPU1212C • Digital Inputs : 8 Nos • Digital Outputs : 6 Nos • Program Memory : 24KB • Data Memory : 10KB • PLC to PC interface : PROFINET • PWM & HSC channels provided • Windows based programming software provided

Panel Specification

• SPDT switches provided for Digital inputs • LEDs provided with fuse protection for Digital outputs • Inbuilt 24V DC power supply provided • Connectors provided for external interface applications
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Rocks Collection

Description

A comprehensive collection of igneous , metamorphic and sedimentary rocks, in wooden box with partitioned tray containing 50 specimens, each nominally numbered and enclosed in a transparent plastics bag. Specimens may be removed from bags for detailed examination. Each specimen is labelled also on the inside of the box lid, indicating the geological name.

Ice Plant Trainer

The Plant uses ice can system. The cans filled with fresh wafer are kept in a tank in which brine is circulated. The brine is cooled by the refrigerant, which in turn cools the water in can and ice formation takes place.

SPECIFICATIONS:

1.Compressor : Kirioskar make hermetically sealed compressor using R 12 Refrigerant. 2.Condenser : 4 row type air cooled. 3.Expansion Valve : 0.5 TR capacity. 4.Evaporator : 1/2″ O.D. copper tube – 75 feet long. 5.Filter – Drier : Silica gel filled – 3/8″ flare connections. 6.Main Tank : 600 mm X 375 mm 7.Total Ice Cane Capacity : 7 Kg 8.Ice Making Capacity : 7 Kg / 4 Hours. 9.Thermocol insulation : 6.5″ 10.Brine Stirrer : Motor driven fan, 1 phase, 1/10 HP, 1440.

INSTRUMENTATION:

1.Temperature Indicator : Digital Type O300°c, with 1 °c least count, using Cr/Al thermocouples. Accuracy 1 % of full reading. 2.Compressor Energy Meter : Single Phase, 10 – 20 Amp. Capacity. 3.Pressure Gauge: a)0-21 Kg/cm2 b) -1 to 10.6 Kg/cm2 c) Both of 65 mm dial. 4.Digital Thermometer CONTROLS : 1.HP/LP Cutout : Auto reset type. 2.Thermostat : Auto reset type. A technical manual accompanies the unit.

SERVICES REQUIRED:

1.Floor Area – 2m. X 1.5m. X 1.5m. Height. 2.220 V., 15 Amp.Single Phase Stabilized power supply

Thermal Conductivity Of Liquid

Thermal conductivity of is an important engineering property. The apparatus uses guarded hot plate method for determining thermal conductivity. It consists of hot plate i.e. an electrical heater sandwiched between two plates. The heat loss from hot plate is prevented by using two guard heaters and heat of removes heat from liquid by circulation of water. Input to heaters the temperatures.

SPECIFICATIONS:

1.Guarded hot plate assembly comprising of main heater, ring guard heater and top guard heater, mounted over the liquid test cavity. 2.Cold plate assembly provided with water connections. 3.The assembly is housed in an enclosure box with glass wool insulation. 4.Instruments panel consisting of : a).Digital voltmeter and ammeter of suitable range. b).Dimmerstat for controlling input to the heaters (2 amp. 3 Nos.) c).Multichannel digital temperature indicator.

SERVICES REQUIRED:

1.Floor space of about 0.75m. x 1.5m. at working height. 2.230v. AC electrical supply with earthling connection. 3.Water flow rate of about 10- 15 lit/min. at constant head.
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Study of Operation Amplifier

To demonstrate the function of operational amplifier using TL081 and L272 with discrete components different value of resistors, capacitor. Input can be applied from microphone, LDR. Offset null control is also provided. Output can be fed through the power amplifier into a loudspeaker.

Integer Counters

Every elementary classroom needs a set of math counters. Double-sided math counters are very useful for integer related activities .These two colour counter are pasted together for modelling math concept, including addition and subtraction of integer numbers. Set of 100 in 2 color

Displacement Vessel, Glass

Made of glass, for class demonstration with spout for specific gravity experiment, available in following sizes : 250ml 500ml

Floating Magnet Set

Description

Demonstrate laws of magnetic attraction and repulsion. Consists of a stand with 5 magnetic rings sealed in plastic case to reduce wear and breakage.
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AJAX PRODUCTS TABS WITH ICONS

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Porous Pot

Description

TypeParticular 
Type APorous Pot Empty, All Porous 
Type BPorous Pot Filled, Charged Porous Pot 

Size

150x50mm

Distributed Control System

A powerful, modular & upgradable DCS has been designed and configured based on Siemens controller SIMATIC PCS7 ASRTX (Micro Box). Distributed I/O system ET200M can be provided for field automation. The distributed I/O can be connected via Profibus, Communication. DCS consists of controller, Power supply unit, distributed I/O, Digital Input and Output modules, Analog Input and Output module. a Demo Panel and Simatic PCS7 V9.0 Software.

DCS Controller

• Make : SIEMENS. • Controller : SIMATIC PCS 7 AS RTX BOX. • Profibus Communication done via CP5611 onboard. • Transmission Rate of Profibus cable is 12 Mbit/s. • 2 x GBIT & RJ45 LAN • Core 17-3517 Processor 1.7GHz, 4GB DDR3 RAM, SSD 80GB, 4xUSB V3.0 • Mouse and Keyboard • Windows7 • Win AC RTX 2010 software controller

Distributed I/O station ET200M

• Support HART, PROFIBUS, Foundation Field bus. • 16 No’s of digital Inputs with 24V DC. • 16 No’s of digital Outputs with 24V DC. • 8 channels of Analog Inputs with 4-20mA. • 8 channels of Analog Outputs with 4-20mA. • 24VDC /10A inbuilt power supply.

Dynamo

Description

With driving wheel, to generate current, mounted on polished wood base with driving wheel in vertical position, a lamp holder and a lamp. Output DC Current Output both DC and AC current
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SILICA CRUCIBLE WITHOUT LID

PRODUCT DESCRIPTION
  • Crucible is glazed inside and outside.
  • Highly resistant to alkalis and hot temperatures
  • 50ml capacity
  • Outside diameter 55mm, 42mm height
  • No lid includedSilica crucible is glazed inside and outside. Highly resistant to alkalis and hot temperature SIZES ARE: 15ML 25ML 50ML 80ML 100ML 150ML

SILICA CRUCIBLE TALL FORM Without Lid, Translucent

PRODUCT DESCRIPTION -Without lid, translucent, glazed - Ordinary type lids to be purchased separately Size/ dimension:
  • 20ml,  Dia. 35mm x Ht. 38mm
  • 30ml, Dia. 43mm x Ht. 38mm
  • 50ml, Dia. 51mm x Ht. 51mm

SILICA MUFFLE TRAYS (For VM Crucible)

PRODUCT DESCRIPTION:   Available in 2types:  Two Hole, 39mm Length Four Hole, 76mm Length
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