presented by…

Research Designs and Standards Organization (RDSO)

(Signal Directorate)

Industrial training PRESENTATION Project – Automatic Testing of Battery

Charger

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Introduction- About RDSO

Research Designs and Standards Organization (RDSO) was formed in 1957, under Ministry of Railways at Lucknow.

RDSO has a number of laboratories which are well equipped with research and testing facilities for development, testing and design evaluation of various railway related equipments and materials.

All the directorates of RDSO except Defence Research are located at Lucknow.

RDSO is the sole R&D organization of Indian Railways and functions as the technical advisor to Railway Board Zonal Railways and Production Units and performs the following important functions: 

Development of new and improved designs. Development, adoption, absorption of new technology for use on Indian Railways. Development of standards for materials and products specially needed by Indian

Railways. and many more…

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Signaling in Indian Railways

Railway signaling is a system used to control railway traffic safely, essentially to prevent trains from colliding.

The set of rules and the physical equipment used to accomplish this signaling is known as the method of working (UK), method of operation (US) or safe working (Aus.).

There are basically two purposes achieved by railway signaling:- To safety receive and dispatch trains at a

station. To control the movements of trains from

one station to another after ensuring that the track on which this train will move to reach the next station is free from movement of another train either in the same or opposite direction.

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Some Important terms in Railway Signaling

• To run the train system according to a timetable.• Trains may only run on each section of track at their

scheduled time.

Timetable operation

• One train is permitted in each block at a time.• Can be manually or automatic controlled.

Block signaling

• To determine whether a section of line is occupied is by use of a track circuit.

Train detection

• To indicate to drivers whether the line ahead is occupied.• To ensure that sufficient space exists between trains to allow

them to stop.Fixed signals

• Displaying the same aspects by night as by day.• Require less maintenance than mechanical signals.

Color light signals

• To inform a driver which route the train will take beyond each signal.

• To drive the train at the correct speed for the route to be taken.

Route and speed

signaling

Now lets move to the project…

Automatic Testing of Battery Charger

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Battery Charger(Specification No.:- IRS: S 86- 2000 with Amd 4)

The Battery Charger is a device for recharging a storage battery by applying the required direct current of proper voltage to the battery to be charged.

The design is as per IRS:S 86-2000 with amendment 4 to supply required power to the load while simultaneously charging the battery.

The charger is designed to operate either in the AUTO mode or in the MANUAL mode. The LED mounted on the front panel indicates the operation of charger either in the Manual mode or in Auto mode. In the AUTO mode of operation, either Auto Float LED or Auto Boost LED will grow depending on the battery condition. Battery Charger

(IRS: S 86-2000)

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Technical Specifications1 Specification Reference IRS: S 86- 2000 with amendment 4

2 Input. Voltage Nominal 230V AQ 50 Hz, Single Phase

3 Permissible input voltage variation 160V AC to 270 VAC

4 Nominal output voltage 24V DC

5Output voltage in Auto mode (a) Auto Float mode (b) Auto Boost mode

(a) Between 2.12 to 2.3V/cell pre-settable(b) 2.4V/cell

6 Output voltage adjustable 2.12V/cell to 2.3V/cell in Auto Float mode

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Output voltage in manual mode(a) 1st position(b) 2nd position (c) 3rd position

(a) n* 2.25V/cell at rated output current and nominal AC voltage(b) (n+l)*2.25V/cell at rated output current and nominal AC voltage(c) (n+2)*2.25V/cell at rated output current and nominal AC voltage

8 Nominal output current 50ADC

9Output current (a)Auto Float mode (b)Auto Boost mode

(a) 0A to 50 A(b) 0A to 50A

10 Line regulation ±0.05V/cell

11 Load regulation < ±0.05V/cell

12 Current regulation Less than +-5% of the rated current of charger

13 Ripple Less than 5% of the nominal voltage of charger

14 Operating temperature range 0 degree to 55 decree Celsius

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Tests to ensure the performance of a Battery Charger

• Visual inspection (Clause 8.6)

• Applied High Voltage test (Clause 8.8)

• Induced high voltage test (Clause 8.9)

• Temperature rise test (Clause 8.10)

• Performance test (Clause 8.11)

• Test for protective devices (Clause 8.12)

• Vibration test (Clause 8.13)

• Climatic tests (Clause 8.14)

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Automization

Automization is the use of control systems and information technologies reducing the need for human intervention.

Advantages of automization: Replacing human operators in tasks that involve hard

physical or monotonous work. Replacing humans in tasks that should be done in dangerous

environments (i.e. fire, space, volcanoes, nuclear facilities, underwater, etc).

Making tasks that are beyond the human capabilities or the requirement 10 make things too fast or too slow.

Economy improvement.

Disadvantages of automization: Technology limits. Unpredictable development costs. Initial costs are relatively high.

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Idea for the development of automatic system

Requirement for the development of a automatic system :

Hardware AC Source Load/Analyzer- Agilent

6813B Electronic Load- Prodigit 3351 Digital Multimeter- Fluke 289/287

Software National Instruments Lab VIEW 2010

Interfacing device GPIB RS232

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Queries & Viva…

Thank You…