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TANGEDCO RAPDRP Project

AS IS Process Document

For

Metering (LT)

Latest Revision ‐ Version 1.0

ITI Limited

ITI Limited: Corporate Marketing Unit: F‐84, ITI Complex, Doorvaninagar,

Bangalore – 560 016, India Telephone: +91 80 25661305, Fax: +91 80 25661210, URL: www.itiltd‐india.com

Navayuga InfoTech Pvt. Ltd.

Navayuga InfoTech Pvt. Ltd., EMPEE Towers, 59 Harris Road, Pudupet,

Chennai – 600 002, India Telephone: +91 44 64622440, Fax: +91 40 23115192, URL: www.navayugaglobal.com

This document is confidential and internal to ITI and Navayuga and has been submitted to TANGEDCO for review and acknowledgement. Copies of the document or any part thereof including but not limiting to design details / methodology details etc may be reproduced without prior written permission from ITI and Navayuga.

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ITI Limited & Navayuga InfoTech Pvt Ltd

© Copyright 2009 ITI Limited & Navayuga Infotech Private Limited.

All product names, trademarks owned by the respective owners are acknowledged.

Revision History

S.No Version Date Author Reviewed Approved 1 1.0 11‐Dec‐10 Mr.B.V.S.A Naidu Dr. Nanda Gopal

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Table of Contents

1. COMMUNICATION DETAILS OF STUDY:.........................................................................................................................................4

2. LT METER READING PROCESS FLOW DIAGRAM:...........................................................................................................................5

3. LT METER REPLACEMENT PROCESS FLOW DIAGRAM: .................................................................................................................6

4. LT METER PERFORMANCE AND CHECK READING PROCESS FLOW DIAGRAM:...........................................................................7

5. BRIEF PROCESS DESCRIPTION AND PROCESS SCOPE:...................................................................................................................8

5.1. INTRODUCTION: ..............................................................................................................................................................................8

5.2. METER TYPES AND CAPACITIES:.....................................................................................................................................................8

5.3. METER SEALS:..................................................................................................................................................................................8

5.4. METER DIGITS..................................................................................................................................................................................8

5.5. METER MAKES:................................................................................................................................................................................9

5.6. METER STATUS:...............................................................................................................................................................................9

5.7. METER READING CYCLES : ..............................................................................................................................................................9

5.8. HAND HELD DEVICE (HHD): ..........................................................................................................................................................10

5.9. METHODOLOGY OF TAKING METER READINGS: ........................................................................................................................10

6. PRECONDITIONS :..........................................................................................................................................................................15

7. BUSINESS RULES:...........................................................................................................................................................................16

8. BASIC FLOW :.................................................................................................................................................................................17

METER MANAGEMENT .........................................................................................................................................................................17

8.1. METER READING: ..........................................................................................................................................................................17

8.2. METER REPLACEMENT AND TESTING: .........................................................................................................................................17

8.3. DEVOLUTION OF METERS:............................................................................................................................................................17

8.4. METER PERFORMANCE AND CHECK READINGS.........................................................................................................................18

8.5. OTHER OBSERVATIONS BY AE/ASSESSOR AT THE TIME OF CAPTURING METER READING:....................................................18

10. PROCESS EXCEPTIONS / VARIATIONS:.........................................................................................................................................19

11. KEY REPORTS: ................................................................................................................................................................................19

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1. Communication Details of Study:

Module/Process Name Metering (LT) Module/Process Owner Mr. B V S A Naidu Prepared By Mr. B V S A Naidu

Sites Visited

Executive Engineer Office, Madhuranthakam Section Office, Madhuranthakam Protection&Communication,HQ,Chennai MRT Assistant Executive Engineer office,K.K Nagar,Chennai

Personnel Interviewed

Mr. Bala Subramanyam- JE, Mr. N.Rangaswami- RS (Revenue Supervisor), Mr.S.Venkatesh- AEE/ P&C, Mr.P.Shanti-MRT/LTAE-RC

Date & Version 11‐Dec‐10 & Version 1.0

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2. LT Meter Reading Process Flow Diagram:

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3. LT Meter Replacement Process Flow Diagram:

Flow chart for LT Meter Replacement

Meter Replacement

Meter Type

LTAE/MRT will visit the consumer

premises

Section AE/Staff will visit the consumer

premises

Whole Current MetersLT CT Meters

Meter Status

Amount Paid

Meter Burnt Defective Meters

Meter Stock

Available

No Replacement, Wait until payment

is made

No

Yes

Meter Stock

Available

1.Give the Direct Supply, Until Replace the meter 2.Wait until replenishment is made in stores

Replace the meter

No

Devaluate the meter to Stores

Wait until replenishment is made

in stores

Replace the meter

Yes

No

Meter Within

GauranteeYesNo

Devaluate the meter to Stores

Meter sent to MRT

MRT Division sent it to Meter Manufacturer for

Replacement

FIG2Metering Diagram

Give the 7 days Notice to Consumer to pay the amount

for Meter Charges

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4. LT Meter Performance and Check Reading Process Flow Diagram:

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5. Brief Process Description and Process Scope:

5.1. Introduction: Metering is the first activity in the MBC process in any Power Distribution Utility. Every unit consumed is metered by HHDs. Every consumer is billed for the recorded units under normal functioning of the meter or provisional units or average units as per the stipulated provisions. We have studied in depth the types of meters and their installations. Meter management involves mapping consumers with the meters, monitoring the meter status etc. The consumers up to a Contracted load of 112 KW are considered to be low tension consumers and the consumers with a contracted load above 112 KW are considered to be high tension consumers.

5.2. Meter types and capacities:

• LT: The different types of meters installed at LT consumer premises can be any of the following: Mechanical Meters High Quality Mechanical Meters Hybrid Meters Static Meters

In case of LT services with a load up to 18.6 KW (25 HP), single or three phase meters are installed. These meters display KWH readings only. In case of LT services where the load is above 18.6 KW (25HP), electronic tri vector meters are installed which display KWH, KVAH and KVA readings.

• Whole current meters: Whole current meters have following meter capacities

5‐20amp 10‐40amp 10‐60amp 50‐100amp 100‐120amp

Based on the meter capacity, the display of meters shall be as follows: Meters with Meter Capacity < = 10‐40 amp (i.e.,5‐20 amp and 10‐40 amp), display KWH Meters with Meter Capacity > = 10‐60 amps (i.e., 10‐60amp, 50‐100 amp and 100‐120 amp),

display KWH, KVAh, KVA (MD).

• LT CT Meters: LT CT Meters have meter capacity 240v/5amp LT CT meters display KWH, Kvah and KVA (MD).

5.3. Meter Seals:

• Whole current meters have TC seal and MRT seals • LT CT Meters have TC seal, MRT seal and MD reset seal

5.4. Meter Digits

• Whole current Meters Meter capacity up to 10‐40amp meters having 5 digits and after decimal one digit. Meter capacity > = 10‐60amp meters having 6 digits and after decimal one digit.

• LT CT Meters: All meters having 6 Digit and after decimal one digit.

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5.5. Meter Makes:

• Whole Current Meters: The different types of meters installed at LT consumer premises can be any of the following:

TTL & Havels India Meters Limited (IML) BHEL RC Meters Conti Meters Avon Meters Landis Sea Horse ECE Capital Omniagate TESCOM Bentel Maxwell India

• LT CT Meters: The different types of meters installed at LT consumer premises can be any of the following: Secure L&T Genius Elstar Omnigate

5.6. Meter Status:

Recorded consumption is to be billed under each billing cycle. The data captured may be for a period of one or two months. The bill is generated on present month reading minus the previous month readings under the normal conditions of the meter. Otherwise as per the meter status there are stipulated procedures to arrive the average units.

• Meter Status: Meter status shall be any of the following: NL – Normal DC – Under Disconnection MC – Meter Change WM – No Meter DL – Door Lock MB – Meter Burnt MS – Meter Struck TC – Tariff Change NS – New Service TR – Tariff revision OR – Dial Complete RL – Reading after door lock NU – Not in Use

5.7. Meter reading cycles :

There are two types of meter reading cycles namely Monthly and Bi‐Monthly.

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Bi‐Monthly: Assessor shall take the meter readings for the services having load up to 60KW (Whole current meter readings)

Monthly: Section Officer (AE) shall take the meter readings for the services having load >= 60KW and up to 112KW (LT CT meter readings)

5.8. Hand held device (HHD): There are using analogic hand held device to take meter readings and give the assessment amount for all LT Consumers.

5.9. Methodology of taking meter readings:

• Meter reader routing and Scheduling: To take the meter reading, the routes are defined on walk order basis.

In case of Bi‐Monthly billing cycle, the Assessors who are the meter readers will take the meter readings. The meter reading schedule for whole current meters (i.e., Bi‐Monthly) is from 1st to 15th or from 1st to 30th

depending on number of services in the section.

In case of Monthly billing cycle, the meter readings for LT CT meters are taken by Assistant Engineers.

• Meter readings for LT Meters are taken in either of the two ways listed below:

Readings are taken manually and entered into Hand Held Devices: Meter readings are read manually and entered into hand held devices for billing purpose. These readings are taken by the departmental staff only. In case of Bi‐Monthly billing cycle, the assessor shall take the readings and in case of Monthly billing cycle, the section officer shall take the readings.

Taking MRI Dumps through CMRI: LTAE/MRT will take MRI dumps for the services having meter Capacity >= 10‐60 Amp (Whole Current meters and LT CT Meters). MRT staff shall visit the consumer premises if the meter is found defective. They shall check the meter status. MRI dumps are not taken periodically.

The scope of this process is to capture the details starting from meter installation to devolution of meter 1. Key Activities:

No. Activity Inputs Outputs Mechanism Control/Validations

1. Maintaining Meter Master

Meter data Meter history The meter details right from drawal of meter till devolution is to be tracked

1.Meter No. should be unique 2.Meter No. and Service No. are to be mapped

2. Downloading Master data from Main server to HHD through Local server

1.Consumer master with the previous meter reading details & status 2.New tariff rates

1.To be billed consumers data uploaded to HHD 2.Assessment (Billing) done as per tariff

Data generated and downloading master data from main server to HHD through local server to capture the current month consumption details with

1.For Assessment (Billing) live consumers data only required. 2. Category tariff

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3.Old tariff rates 3. In case of tariff changed in current billing cycle, assessment is done under multiple tariffs based on the periods.

current meter status.

Agricultural (V) and Domestic for huts (I‐B) data not required to take meter readings as these services are not billed. 3. Services under disconnection are also not billed, hence data is not required.

3. Taking meter readings (Whole Current Meters)

Assessor enter the current month reading and meter status into the HHD

1. Current month Assessment amount and consumption details with meter status. 2.Exceptionals and other observations report

Capturing the current month reading and meter status manually for consumers with load up to 60KW. Current month Meter reading details entered into HHD and the same details entered into white meter card and green meter card. After entering the meter readings into HHD, it will shows assessment amount that can be entered into White meter card and green meter card.

Current month reading should be greater than previous month reading in normal cases. Meter status should be satisfying one of the HHD Meter status codes available. If the meter is stuck up or nil consumption case, present and previous meter readings can be same.

4. Taking meter readings (LT CT Meters )

Section‐AE enter the current month reading and meter status into the HHD

1. Current month Assessment amount and consumption details with meter status. 2.Exceptionals and other observations report

Capturing the current month reading and meter status manually for consumers with load =>60KW Current month Meter reading details entered into HHD and the same details entered on the consumer white meter card. After entering the meter readings into HHD, it will

Current month reading should be greater than previous month reading in normal cases. Meter status should be satisfying one of the HHD Meter status codes available.

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shows assessment amount that can be entered into White meter card and green meter card.

5. Taking MRI Dumps (Meter capacity=>10‐60amp)

MRT –AE read the meter data through CMRI

MRI reports with current month consumption details

Capturing the current billing cycle consumption, meter status and other parameters through MRI

6. Rectifying meter related problems

Exceptional report and other observations by Assessor / Request by consumer

Rectifying the meter problem with details of resolution ie., meter changed date, new meter details.

Based on the Exceptional Report/request by the consumer. The action flow is as follows. For Whole current meters:

1. Section‐AE /staff will be visiting the consumer premises.

2. If Meter status is meter burnt, 7 days notice to be issued and collect the amount from the consumer and replace the meter

3. If meter is defective then replace the meter.

4. In the case of Meter stock is not available at section office for meter replacement same meter is continued in the consumer premises until stock is available.

5. If Defective meter within guarantee period meter is sent to MRT otherwise meter is sent to stores for scrap.

For LT CT Meters:

1. MRT‐LTAE /RC will be visiting the

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consumer premises. 2. If Meter status is

meter burnt, MRT division communicate to section‐AE to collect the amount from consumer and replace the meter.

3. AE give the 7 days notice to Consumer and collect the amount.

4. Meter defective cases, MRT‐ LTAE collect the new meter from Section‐ AE and replace the meter.

5. In the case of Meter stock is not available at section office for meter replacement same meter is continued in the consumer premises until stock is available.

6. If Defective meter within guarantee period meter is sent to Meter manufacturer, otherwise meter is sent to stores for scrap.

7. Meter Performance and Check Readings

1.Take the Check Readings. 2.Check of TC Seal and MRT Seals. 3.LoadTesting

1. List of the Abnormal High and Abnormal Low consumers. 2. Found Tampering cases and theft. 3. Found Meter Defective cases.

RS/IA Check Readings: • RS/IA’s take check

readings and Compare with White Meter Card.

• If found difference consumption in positive , raise the short fall amount to Consumer. with knowledge of AE

• Slip submitted to

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Consumer. • Consumer should be

pay within 20 days from date of issue slip.

• If consumer not paid that Slip amount, it is included into the next Bill in CC.

• If found difference consumption in negative, Calculate the difference units amount and adjusted that amount in next Bill.

AE’s performance Check: • AE’s take check

readings and Compare with White Meter Card.

• If found abnormal high consumption, raise the short fall amount to Consumer.

• Slip submitted to Consumer.

• Consumer should be pay within 20 days from date of issue slip.

• If consumer not paid that Slip amount , it is included into the next Bill in CC.

• If found consumption abnormal low, Calculate the difference units amount and adjusted that amount in next Bill.

• Check of seals, see the all seals are ok or not

• If MRT seal missing

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with normal variation, Replace the meter with knowledge of AEE.

• If MRT Seal tampered or any theft found call to vigilance.

• Vigilance book the case and they will penalized to consumer.

• Load testing conducted, if any found defective, Meter will be replaced.

6. Preconditions :

The service connection should have been released. The details of the consumer shall be available in the server.

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7. Business Rules:

1. For release of service connections, the load conditions shall be as follows: According to the provisions in the Electricity Supply code metering shall be as follows.

For the loads up to 4000 watts (4 KW) supply shall be single phase, 2 wire 240 volts between phase and neutral.

For the loads above 4000 watts (4 KW) and up to 112 KW supply shall be three phase 4 wire 415 volts between phases and 240 volts between phase and neutral.

Meters shall ordinarily be installed at the point of entry to the consumer’s premises at a suitable and easily accessible place as the Engineer may decide.

2. Meter Status: Meter status shall be any of the following: NL – Normal DC – Under Disconnection MC – Meter Change WM – No Meter DL – Door Lock MB – Meter Burnt MS – Meter Struck TC – Tariff Change NS – New Service TR – Tariff revision OR – Dial Complete RL – Reading after door lock NU – Not in Use

3. Consumption calculator:

KWH consumption = ( present Reading kwh – previous reading kwh) * MF KVAH consumption = (present Reading kvah ‐ previous reading) * MF KVA consumption = present Reading kva * MF

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8. Basic Flow :

Meter management

8.1. Meter reading:

For Manual Readings Downloading the master data and new tariff rates into the Hand held device (HHD) from the server. Assessor/AE will go to the consumer premises and enter the current month reading and meter status. The meter readings are updated in Hand held device. Assessment amount is arrived at HHD Consumption details (meter readings) and assessment amount are entered on the consumer’s white

meter card which is available with the consumer. Uploading the billing data from HHD to Server.

For MRI Dumps

MRT‐AE will go to the consumer premises and take the MRI dump through MRI. Save the data in the computer at MRT division Generate MRI analysis reports.

8.2. Meter Replacement and Testing:

• For Whole Current Meters Section‐A E to check the meter as per observations given by Assessor or complaint by the consumer. If Meter is burnt, Section‐AE gives the 7 days notice to Consumer and collect the amount. After collect the amount, meter is to be replaced. If meter is defective then replace the meter. In case meter is not available in the stock at section office, for meter replacement, the existing meter or

without meter is continued in the consumer premises until stock is available. If the meter is found to be defective within guarantee period, the meter is sent to MRT. Otherwise meter

is sent to stores for devolution. • For LT CT Meters

MRT‐LT AE to check the meter as per observations given by Section‐A E / complaint by the consumer / MRI report.

If Meter is burnt, Section‐AE gives the 7 days notice to Consumer and collect the amount. After collect the amount, meter is to be replaced. If meter is defective then replace the meter. In case meter is not available in the stock at section office, for meter replacement, the existing meter or

without meter is continued in the consumer premises until stock is available. If the meter is found to be defective within guarantee period, the meter is sent to MRT. Otherwise meter

is sent to stores for devolution.

8.3. Devolution of meters:

If meter is found to be defective and it is beyond guarantee period, the meter is to be handed over in the stores for devolution.

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8.4. Meter Performance and Check Readings

• RS/IA Check Readings: Inspector of Assessments (IA) in the office of the Assistant Engineer has to check 10% of the industrial and commercial services. Revenue supervisor (RS) in the office of the Assistant Engineer has to based on exceptional reports has to review consumption and energy charges in respect of industrial services and 10% of commercial services and 5% of other services.

RS/IA’s take check readings and Compare with White Meter Card. If found difference consumption in positive, raise the short fall amount to Consumer. with knowledge of

AE Slip submitted to Consumer. Consumer should be pay within 20 days from date of issue slip. If consumer not paid that Slip amount, it is included into the next Bill in CC. If found difference consumption in negative, Calculate the difference units amount and adjusted that

amount in next Bill. • AE’s performance Check:

25% of the meters are checked once in a year by rotation under which are maintained in each section. Check the performance of the meters by a team of AE’s in the division. LT CT meters are inspected by MRT wing each service once in a year by rotation fixing an action plan for the year for verification.

AE’s take check readings and Compare with White Meter Card. If found difference consumption in positive, raise the short fall amount to Consumer. Slip submitted to Consumer. Consumer should be pay within 20 days from date of issue slip. If consumer not paid that Slip amount, it is included into the next Bill in CC. If found difference consumption in negative, Calculate the difference units amount and adjusted that

amount in next Bill. Check of seals, see the all seals are ok or not If MRT seal missing with normal variation, Replace the meter with knowledge of AEE. If MRT Seal tampered or any theft found call to vigilance. Vigilance book the case and they will penalized to consumer. Load testing conducted, if any found defective, Meter will be replaced.

8.5. Other Observations by AE/Assessor at the time of capturing meter reading:

No Display Digital Slipping Glass Broken MRT Seal missing

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9. Interface:

The various interfaces envisaged in the meter management are as follows: Downloading data (PC to HHD) Uploading data (HHD to PC) Meter change form for CT and Non‐CT Meter reading deletion for CT and Non‐CT Check reading entry CT Meter reading entry screen Non‐CT meter reading entry screen Tariff configuration screen Uploading MRI data (CMRI to PC)

10. Process Exceptions / Variations: Disconnection services readings are not taken. Agricultural services and Domestic huts meter readings are not taken. JE has the privilege to delete meter readings within 5 days of the assessment date,

Next 15 days AAO have the privilege to delete the data.

11. Key Reports:

No. Brief Description of Report Frequency 1. Meter Reading report for CT and Non‐CT meters Monthly 2. Door lock cases report Periodic 3. Nil Consumption report Periodic 4. Defective and No meter report Periodic 5. Status Report CT Periodic 6. Status report of Non‐CT Periodic 7. Meter reading deletion report Monthly 8. Exceptional Reports from MRI data Periodic

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