This document summarizes the presentation on 1-phase static energy meters given by Uday. It discusses the company profile of Pal Mohan Electronics, which manufactures energy meters. It then outlines the contents of the presentation, which includes how energy meters work, units of measurement, types of meters, tampering issues, the main functions of meters, and Pal Mohan's production process from the store department to quality control testing to packaging. The production process is described in three sentences.
2. COMPANY PROFILE
• Pal Mohan Electronics Pvt. Ltd. is one of the
conglomerate company of Pal Mohan Group of
companies engaged in manufacturing of Pal
Mohan make single phase and three phase static
Watt-hour meters of assorted ratings and molded
engineering plastic meter boxes for Housing
Energy Meters at its modern and well equipped
plant at Kirti Nagar, New Delhi.
• Pal Mohan Electronics Pvt.
Ltd is an ISO: 9001:2000 certified company, which
is recognition of adopting international quality
standards at all stages at its works.
3. CONTENTS:
HOW ENERGY METER WORKS?
UNIT OF MEASUREMENT.
TYPE OF ENERGY METER.
TYPES OF ENERGY METER
TAMPERING AND SECURITY
MAIN FUNCTION
PRODUCTION OF METER
STORE DEPARTMENT
QUALITY AND CONTROL DEPAERTMENT
TESTING
PACKAGING
4. How Energy Meter works ?
1.Energy meter calculate power.
2.Power is the product of voltage and
current.
3.In electronic energy meter the current and
voltages are first calculated by using separate
transducers.
4.Electronic mater possess a microprocessor
which is interfaced by a programmable
peripheral device which receive its input from
two CT.
7. Unit of measurement
Most common unit of measurement is killowatt
hour(kwh).
1kwh=amount of energy used by a load of 1 kw
over a period of 1hr.
It is also equal to 3,600,000 joule.
Some electricity companies use the si mega-
joule instead
8. Types of energy meter
1.Electromechanical meters.
2.Electronic meter.
3.Communication meter.
9. Electro-Mechanical meter
• O • Operate by counting
the revolution of the
aluminum disk.
• No.of revolution is
proportional to energy
usage.
• If the time taken by
disk=t, then power
p=3600*kh/t
10. Electronic energy meter
• Fig. • Uses LCD or LED
display.
• Can transmit reading
to remote place.
• It also can record the
parameters.
11. Communication meters.
• Remote meter reading is practicle
example of telemetry.
• Allow more measurement and remote
provisioning.
• It save cost of human meter reading
reader and resulting mistake.
• Ex. GSM meter , RF meter etc.
12. Tampering and security
• Common method of tampering on older meter is
attaching magnet outside the meter.
• Some combination od capacitor and inductive
load also reduce or reverse the motion of disk.
• Modern meter is free from tampering as it can
detect and stores the last value with date and
time
• Some meter have sensor which can report
opening of meter cover.
15. Store departments
• Basically it is big
room that carries or
store all raw material.
• From big materials to
small screw of Meter
everything is stored
here.
16. Quality and control department
1 .Components and process of checking
quality.
a)PCB
b)Capacitors(ELCO)
c)Screws
d)Body with terminal block
17. 2. Control
Flow wire test apparatus.
• It is a instrument that creates high Temperature
at rof by which body is tested.
• Temperature for front and back body is 600c.
• Temperature for terminal block is 900c.
• If the body get burn that that should be rejected.
18. Meter testing
• Starting test.
• Accuracy test
• Frequency test
• Voltage variation test
• Repeatable test
• Creep test
• Harmonic test
• Dial test
