Electrical Engineering Equipments – Quantum Scientific

3 Phase Ac Machine With Loading Arrangement

quantum — Wed, 08 Mar 2017 09:28:09 +0000

This is a 3-phase AC machine. This is mechanically coupled to a breakdrum to provide loading. The shaft of the machine is coupled a drum. In turn the drum is connected to mechanical weighing pan by means of a belt. Rotating the screws provided on either sides of the belt can adjust the belt tension. There by it is possible to load the shaft of the 3-phase motor with a defined tension. The difference in the scale reading, provides the tension, the shaft is subjected to. As a result of this the current in the windings are varied. By noting the readings of the associated meters and the difference in the weighing pan readings, the load characters of the motor can be evaluated.

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3 Phase Induction Motor

quantum — Wed, 08 Mar 2017 09:30:47 +0000

This is an AC 3 ? induction motor. This operates on 415V AC. This squirrel cage induction motor coupled to a 2KW shunt generator.

Specifications:

Volts: 415V – 3¢
Power: 2.2KW
Current : 4.8A
RPM: 1440
Frame: PM100

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Alternator

quantum — Wed, 08 Mar 2017 09:34:04 +0000

This is an AC 3 ? synchronous alternator with, square path, 4 poles, and rotor wound stator excited type. This is screen protected IP22, with drip proof enclosure.

Specifications:

Voltage: 415V
Amps: 4.2A
RPM: 1500
KVA-3
Rating-CMR
Phases-3,Hz-50
ENCL-S.P,PF-0.8
Extn VOLTS-220
Winding-Y
Amps-1.4A

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Dc Machine With Loading Arrangement

quantum — Wed, 08 Mar 2017 09:24:26 +0000

This is a DC motor with the above specifications. The shaft of this motor is coupled mechanically to a break drum. A belt moving over this break drum provides necessary torque to the shaft of the motor, and in turn loads the shaft with a finite torque. Two calibrated spring balances are connected to either side of the belt, which is moving over the break drum. This is a method to load the shaft of the motor with a loading arrangement. By taking reading on these spring balance readings, the loading value may be calculated.

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Dc Shunt Generator No Load Tests On Dc Shunt Generator

quantum — Wed, 08 Mar 2017 09:40:18 +0000

Open Circuit Test
Objective: To obtain the magnetization characteristic and therefore determine the critical field resistance and critical speed of the given dc shunt generator.

Preview:
The EMF induced in a DC machine is proportional to the flux per pole, the number of conductors and speed. This EMF depends on speed and flux. As the flux increases the EMF increases beyond a point the flux gets saturated. The BH curve of the core depicts the magnetization curve of the machine.

(A) Critical Speed of a DC Shunt Generator

Objective: To determine the critical speed of a dc shunt generator. With the fixed excitation and variable speed, as the speed reduces the OCC proportionally slides down so that the no load voltage reduces. At a particular speed, called the critical speed, the OCC is tangential to the Rf line and as a result the generator fails to excite.

Preview:
With the fixed excitation and variable speed, as the speed reduces the OCC proportionally slides down so that the no load voltage reduces. At a particular speed, called the critical speed, the OCC is tangential to the Rf line and as a result the generator fails to excite.

Equipment Required: All the measuring instruments associated with each experiment are industrial grade. These instruments are housed in an elegant cabinet as a package. Range of instruments and accessories (standard format)

1. 2HP Shunt machines mechanically coupled both are identical 220V 2HP 1500rpm.
2. 3-4 point DC Starter for the above
3. Suitable Loading rheostat
4. Digital tachometer
5. Suitable Double tube rheostat
6. Suitable Single tube rheostat
7. Suitable Digital Voltmeter DC
8. Suitable Digital Voltmeter DC
9. Suitable Digital Ammeter DC
10. Rectifier Unit 0-240V DC @ 1.5KVA with power failure protection.

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Frequency Meter

quantum — Wed, 08 Mar 2017 09:37:48 +0000

We are engaged in manufacturing and supplying a designer range of Frequency Meters, which are precisely engineered by our expert engineers. We develop these Frequency Meters from high grade raw materials sourced from our certified vendors. With the availability in various technical specifications these Frequency Meters are available in various measurements. Our products are widely used in various industrial and electrical purposes.

Features:

Flawless range
Superb quality
Optimum performance

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Inductive Load

quantum — Wed, 08 Mar 2017 09:41:19 +0000

Voltage utilized in industry are of either Resisitive, Inductive or Capacitive types these provide various types of power factor and the power system behaves accordingly. Resistive load banks are used to provide braking effect or for Heat dissipation.
These have canthel wires wounded on porcelain tubes through which electricity is passed & current flows, normally for Resistive loads the Power factor is unity. This Model is the Industrial/Educational model suitable for demonstrating to students the complete know of the Basics, Loading provided in steps, Study of Efficiency & Maintenance of these Loads packaged in small rating. Students can make connections of their own with the help of the terminations provided.

Technical Specs :
– Power ratings available : 1KW / 2KW / 5 KW / 10KW
– Voltage Primary : 440V AC 3Phase/ 220V AC Single phase /220V DC
– Enclosed in cabinet with Steps provided for loading, meters provided for each phase & terminations brought out on Banana terminals

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Kilo Watt Meter

quantum — Wed, 08 Mar 2017 09:36:56 +0000

We are engaged in manufacturing and supplying a wide range of Kilo Watt Meters. These Kilo Watt Meters are manufactured following international industry standards, and assures superb performance. Kilo Watt Meters offered by us are widely used in various heavy industries. These products are widely recommended for their unmatched quality and flawless performance. With the availability in various technical specifications, these Kilo Watt Meters are easily available.

Features:

Flawless range

Superb quality

Durability

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Knife Switch

quantum — Wed, 08 Mar 2017 09:42:16 +0000

Low voltage, single pole double throw, moulded base with plated metal contacts and screw connectors.

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Repulsion Motors

quantum — Wed, 08 Mar 2017 09:35:06 +0000

‘PHYSILAB’ make Repulsion motor is a single phase motor which has stator winding arranged for connection to source of power and Armature winding connected to commutator and brushes on commutator are short circuited. Brushes are so placed that the magnetic axis of Rotor winding is inclined to magnetic characteristic to change the Direction. Repulsion motor is continuously rated, screen protected, self ventilated machine in E/B class Insulation and confirms to IS4722.

Capacity : 0.37 / 0.75kw
Rpm : 2880
Voltage : 230V Single phase AC 50Hz.

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