supply, installation and commissioning of smart single phase

supply, installation and commissioning of smart single phase
NIT 17/2
e-Tender No. 02-17
Online tenders in two parts viz. 1 ) Techno- Commercial Bids and 2 )
Price Bids, with validity up to 360 days are hereby called from manufacturers in
duplicate, for design, manufacture, testing and supply of Smart Single Phase, 2
Wire type, suitable for connection to LT 240 Volt system 5-30 Amps, Static Whole
Current Meter, accuracy class of 1.0 with pilfer proof box, meter seal and with
optical cable port, CIU (Consumer interface Unit) with associated Communication
Infrastructure and accessories and quantity as mentioned below.
Amount of EMD
: Rs. 25.00 Lakh
Date of Pre Bid meeting: 27.02.17
1 Cost of tender paper : Rs. 12000.00 (Rupeess twelve thousand) only in
the form of A/C payee Demand Draft/Banker’s Cheque (Non refundable)
duly pledged in favour of APDCL, BijuleeBhawan, Guwahati-1, payable at
Guwahati. Tender papers and all related documents including NIT can be
downloaded from the APDCL websites given below.
APDCL e-tendering website OR
Chief General Manager (HQ), APDCL
Office of the ChiefLimited
Notice (HQ),
No – 13/2
BijuleeBhawan, Material Section, 6th Floor, Paltan Bazar
Guwahati-781 001,Fax: 0361- 2739535
E-mail: [email protected]
No. CGM (HQ )/Mat/TGL(IM&B)/2017/
Online tenders in two parts viz. 1 ) Techno- Commercial Bids and 2 ) Price Bids, with validity up to 360 days
are hereby called from manufacturers, for design, manufacture, testing and supply of Smart (Configured as
prepaid) Single Phase Two Wire type (with Communication Infrastructure/Head End System/Meter Data
Management), suitable for connection to LT 240 Volt system 5-30 Amps, Static Whole Current Meter, accuracy
class of 1.0 with in-built connect/disconnect with pilfer proof box, meter seal and with optical cable port.
Interested firms may view the detailed Tender Notice and specification by visiting APDCL e-tendering website, OR &
Key Dates:
Tender Start date:20.02.2017
Tender End Date:Upto 12.00PM of 08.03.2017
Pre Bid Meeting:
Technical Bid opening date: From 1.30PM of 08.03.2017
Memo No.CGM (HQ )/Mat/TGL(IM&B)/2017/
Copy to:
( R.Kalita )
Chief General Manager (HQ), APDCL
1. The Managing Director, APDCL, BijuleeBhawan, Paltanbazar. Guwahati-1, for favour of kind
2. The Chief General Manager (D), UAR/CAR/LAR APDCL, BijuleeBhawan, Paltanbazar. Guwahati-1, for
kind information
3. The Chief General Manager (F&A), APDCL, BijuleeBhawan, Paltanbazar. Guwahati-1, for kind
4. PS to Chairman, APDCL for kind appraisal of honourable Chairman.
5. The AGM (F&A), O/O the CGM (HQ), APDCL, BijuleeBhawan, Paltanbazar. Guwahati- 1, for
6. The Public Relation Officer, APDCL, BijuleeBhawan. He is requested to publish the tender Notice in
one issue of National and local daily News papers.
7. The O.S.D. to Chairman. He is requested to publish the Tender Notice in the APDCL website.
8. Relevant Office file.
(R.Kalita )
Chief General Manager (HQ), APDCL
Office of the Chief General Manager (HQ), APDCL
BijuleeBhawan, Material Section, 6th Floor, Paltan Bazar
Guwahati-781 001,Fax: 0361- 2739535
E-mail: [email protected]
e-Tender Notice No – 17/2
Online tender in two parts, with validity up to 360 days from the date of opening as mentioned
below from the manufacturers, for design, manufacture, testing & supply of Smart Single phase, 2 wire type
suitable for connection to LT 240 volt system 5-30Amp static whole current meter with inbuilt
connect/disconnect switch and communication infrastructure, bearing BIS marks completed in all respect &
strictly as per specification, having accuracy class of 1.0, housed along with pilfer proof box and meter seal
with communication port, as per technical specification enclosed, are invited by the undersigned .
Tender No.
SSM –0002-17
5-30Amp. static
whole current
Smart 1- ph
(Configured for
30000 nos.
Cost of
of receipt
of tender
Date /time
of opening of
Technocomm. Bids
Tender documents can be downloaded from and www.
Cost of tender documents in the form of A/C payee Bank Draft (non refundable) duly pledged in
favour of APDCL, BijuleeBhawan, Guwahati- 1 should be submitted on or before 08-03-2017, 12-00 PM, to
qualify for participation. The bidders shall have to upload a scan copy of DD in PDF format for document
cost payment at the very earlier stage of the online bid preparation.The firms, downloading the bid
documents from the APDCL websites, will have to submit the cost of documents on the day of submitting of
bid document.
The firms will have to submit 3 (three) Nos. sample meters (one meter should be open for
inspection, one meter chemically/ultrasonically welded sealed and one meter complete, fitted with pilfer
proof box), with Base Computer Software, all other related accessories, along with the bid document, for
testing in our laboratory.
The EMD should be furnished with techno-commercial bids as per chart above in the shape of A/C
payee Demand draft in favour of APDCL, BijuleeBhawan, Guwahati- 1 / Bank Guarantee of Nationalized
bank duly pledged in favour of APDCL, BijuleeBhawan, Guwahati- 1, Bank Guarantee with validity of 360
days from the date of opening of tender. The bidders shall have to upload a scan copy EMD instrument
copy in PDF format at the very earlier stage of the online bid preparation.Any tender without Earnest Money
will be rejected outright.
Bidder who intends to bid has to pay a sum of service fee(which is Nonrefundable) as applicable
through the secure electronic payment gateway using different payment option like net banking/debit
card/credit card/e-wallet etc. Service fee paid to the service provider is non-refundable in case of Successful
bid submission, unsuccessful bid submission and in case of Cancellation of tender and subsequent Retender.
Date of opening of Price Bids will be intimated subsequently to the Techno Commercially qualified
The under signed reserves the right to reject any /all bids without assigning any reason there of,
and to accept any tender or part of which is advantageous to APDCL and to award the contract to one party
or split up the contract amongst different bidders.
( R.Kalita )
Chief General Manager (HQ),APDCL
Offers only from the manufacturers shall be considered. The validity of offer should be 360
The tender should be in two parts, i.e. (i) Techno commercial bid, (ii) Price bid.
a) Techno commercial bid: In the techno commercial bid, the tenderer shall submit (i) Earnest
money deposit (ii) Other Technical details along with Type test certificate from recognised
Govt. approved test house (iii) Drawings (iv) Validity of offer (v) Terms of payment (vi) Delivery
schedule (vii) Annual turnover (viii) Order executing details (ix) Users’ performance certificate.
Technical offer containing scan copy of all the specified required in tender document has to
be upload in PDF format only. Technical offer should not contain any price information.
(Bidders are requested to scan documents in 100/150 dpi in separate file(Not in pages) for
uploading. One can upload a single file of 10MB in size in multiple nos).
b) Price bid: The price bid has to be filled strictly in the given online format only. Price bid should
distinctly indicate the following components - Quoted price with clear differentiation of Exfactory price, Freight & Insurance and Taxes and Duties. Including installation of complete AMI
( Advanced Metering Infrastructure).
A copy of Techno commercial bid(Excluding of Price Bid) has to be submitted in a sealed
envelopes superscripting tender no., name of bidder, due date, etc. In case of techno
commercial bid, the earnest money deposit and document costshould be superscripted on the
body of the sealed covers.
The Earnest money deposit (EMD) must be submitted with the Techno commercial bid. The
EMD should in the form of A/C payee Demand draft / Bank Guarantee of Nationalized bank
duly pledged in favour of the APDCL, BijuliBhawan, Paltanbazar, Guwahati-781001.
The Techno commercial bid shall be opened on the due date and due time (or on the next
working day, in case of holiday) in presence of the bidder or their authorised representatives.
Price bids of technically approved bidder will be opened on a separate date after due
Telegraphic/Telex offer shall not be considered and tenders received after the due time even
though posted earlier shall not be accepted. The undersigned shall not be responsible for any
postal delay.
Post revision of quoted rates, terms and conditions having direct or indirect impact on the
quoted rates shall not be accepted and the offer would be rejected and earnest money shall be
forfeited. Withdrawal of offer within the quoted validity period shall not be accepted and earnest
money shall be forfeited. APDCL reserves the right for negotiation of rates, terms and
conditions only.
Each and every paper of the tender/bid should be signed affixing their seal by the bidder while
submitting tender/bid.
In comparing bids and making awards, the APDCL will consider such factors as compliance
with specifications, relative quality and adaptability of suppliers of services, the technology and
process involved in production experience, financial soundness, records of integrity in dealing
ability to furnish repair and maintenance services.
All other terms and conditions as mentioned in the APDCL General Conditions of Supply and
Erection unless in contravention of the above conditions will remain in force.
Delivery being the essence of the contract, the tenderer should preferably quote their delivery
to commence within one month from the date of placing of letter of intent/order and to be
completed within stipulated delivery schedule. bidder may be asked to re-phase delivery
schedule as per requirement of APDCL.
The materials are required for various Plan & Non-Plan works. The APDCL reserves the right to
reject any / all tenders without assigning any reasons thereof, the right to accept any tender or
part of which is advantageous to APDCL and to award the contract in single or phased manner
to one party or split up amongst the different bidders.
One No of laptop (HDD-1 TB, 4GB RAM, TFT-15”, OPERATING 32 BIT & WINDOWS 10
PRELOADED VERSION) to be supplied with every 500 Nos. of meters free of cost, to be
specified in purchase order.
( R.Kalita )
Chief General Manager (HQ), APDCL
Qualifying Criteria
(Other then specified in the bid documents)
This section covers the minimum requirements with respect to experience, capability and other
particulars of the Bidder to be considered eligible for participation in the bid for the proposed work. The
BIDDER shall become eligible to bid on satisfying the following “BID QUALIFICATION
REQUIREMENTS” and on production of the required documentary evidences along with the Tender.
The Bidder must submit a written Power of Attorney authorizing the signatory of the bid to commit the
bidder; and to be qualified for this contract the bidder must compulsorily meet the following minimum
1. The bidder shall be a technical expert in Energy Measurement with adequate knowledge of the
work proposed in the tender and through knowledge of design procedure & processes, designing of
manufacturing, quality control and shall have access to infrastructure to manufacture Energy
Measurement Devices and Smart Grid Project.
2. The Bidder shall be anreputed Manufacturer for Single Phase & Three Phase Smart Energy Meters
& have a minimum experience of two years in design manufacturer & supply of Smart Energy
Meters. Original Notarized copy of relevant documents in support of the above must be furnished.
3. The Bidder must possess BIS certification as per IS-13779:99(with latest amendments) covering
the rating being quoted. Tenders received without BIS certification will be rejected.
4. The bidder should have experience in Design, Manufacture, Testing and supplying at least 25,000
nos. of Single Phase Smart Energy Meters/ Three Phase Smart Meters in last two years.
5. At least 15,000nos Single Phase/ Three Phase Smart Meter based Technology (alongwith inbuilt
connect/disconnect switch and 2 way communication) should be in successful operation for last 2
years as on the date of opening of the Bid.
6. The Bidder should have executed/executing Smart Metering System in INDIA (communication
based on GSM/GPRS/RF/wifi) of minimum 10,000 nos of Meters.
7. In support of the above statement attested copies of the purchase orders, Excise Duty invoices,
Copies of Performance certificates (Issued by head of purchase wing) from purchaser should be
8. Bidder should have in house Research & Development Unit approved/acknowledged concerned by
Ministry of Govt of India/CEA .
9. The Bidder possess valid ISO 9001:2015 certification for meters manufacturing, ISO 27001:2013
for information security management system & ISO 14001:2015 for environmental management
system and ISO 18001:2007 for Occupational Health & Safety Management System.
10. The offered smart meter should be type tested as per IS:13779 and type test certificate (not more
than three-year-old) from any NABL lab must be furnished along with other bid documents and
should also be compatible with IS: 16444.
11. The bidder shall submit a copy of valid certificate of Smart Metering Application and UC-3
certification for the connect/disconnect switch.
12. Bidder should be original meter manufacturer.
13. This bid covers the manufacturing, installation and also 5 years maintenance of the metering
system. Any defective meter should be replaced within 10 days from receipt of complaint from
APDCL field office.
14. At least 2% of tendered quantity of meters and accessories should be available as buffer stock in
the state of Assam. Also, the bidder should have at least one nodal contact person in each circle of
APDCL who will be in direct contact with APDCL’s field offices regarding issue related to metering
system including replacement of defective meters till expiry of the maintenance period.
15. In case the defective meter is not replaced within the stipulated time as mentioned in Clause No.
13, a penalty at the rate of0.5% of each meter cost will be deducted from the security deposit per
day from the 11th day of intimation till replacement of the meter.
16. Security money will be refunded at the end of 5 years maintenance period only after complete
verification of the entire metering system subject to satisfactory operation of the metering system
and certified by designated officer from APDCL.
Equipment Capabilities;
I) The manufacturer’s laboratory must be well equipped for complete range of testing of meters.
They must have computerized standard power source and standard equipment calibrated not
later than a year.
II) The details of testing facilities available for conduction, a) The routine tests and b) the
acceptance test shall be furnished in a statement.
III)The manufacturer’s laboratory must also have facilities for stage wise testing of parts during the
manufacturing process. The details of these must also be provided in a statement. Facilities
available if any for conducting type test may also are furnished.
IV)Detailed list of equipment of the factory used for manufacturing the meters including the testing
equipments with make, year of manufacture along with flow chart of the manufacturing
processes is to be submitted. Bids without these details will be treated as non responsive.
Financial Capability;
1. The turnover of the bidder for the 2 (two) best financial years out of last 5 years should be at least
Rs.20.00 (twenty) Crores.
2. The document should be duly authenticated by registered CA and uploaded.
3. Preferably, the bidder should be a part of Successfully Executed or Under Execution Smart Grid
Project in India out of 14 pilot project declared by GOI as Lead Bidder of Consortium Partner
Necessary PO should be attached.
4. The bidder must have capacity to manufacture and supply approximately entire lot of the tendered
quantity within 60 days of issue of order and they have to produce documentary evidence showing
their capability for the same.
Litigation History; Bidders shall submit details of all the litigations, arbitration or other claims,
whether pending threatened or resolved in the last 5 (five) years with the exception of immaterial
claims with a cumulative impact of not more than 10% of their total assets. The employer may
disqualify bidders in the event of that total amount of pending or threatened litigation, arbitration or
other claims represent more than 50% of their total assets.
ISO certification; The bidders manufacturing facilities must have ISO certification with latest
updating. Documentary evidence to this effect must be submitted with this bid. The bidders offer
shall include and substantiate data on qualifying requirements such as;
a. Copies of original documents defining the constitution or legal status, place of registration and
principal place of business, written power of attorney of the signatory of the bid to commit the
b. Copies of BIS certification for the bidders manufactured product,
c. Reports on the financial standing of the bidder, such as profit and loss statement and auditor’s
report for the last 5 years.
d. Evidence of adequacy of working capital for this contract (access to lines of credit and availability of
other financial resources).
e. Authority to seek references from the Bidders Bankers.
f. Information regarding any litigation, current or during last 5 years, in which the bidder is involved,
the parties concerned and disputed amount.
The above criteria requirement should be indexed and listed in chronological order for easy
Even though the bidders meet the above qualifying criteria, they are subject to be disqualified if
they have:
a. Made misleading or false representation in the forms, statements and attachment submitted in
proof of the qualification requirements.
b. Record of poor performance by the bidders or their sister concern such as abandoning the
works, not properly completing the contract, inordinate delaying incompletion, litigation history
or financial failure etc. in APDCL or its sisters concerns.
c. Notwithstanding anything stated herein under, the APDCL reserved the right to assess the
capacity and capability of the bidder to execute the work, should the circumstances warrant
such assessment in the overall interest of the APDCL.
Chief General Manager (HQ), APDCL
Terms and conditions for installation and commissioning of smart meters along with box are as detailed
1. Scope of work covers installation of new connections /replacement of existing energy meters with
single phase smart (configured as prepaid) energy meters.
2. Contractor shall carry out the installation of meters under scope of this tender.
3. APDCL shall inform its consumer in advance about the meter replacement activity for smooth
execution of contract,
4. Prior to commencement of work, APDCL shall issue necessary Identity Card for contractor’s staff
enabling access to site.
5. APDCL shall inform its staff in advance regarding the installation program and desired necessary
cooperation shall be provided by them to contractor’s field teams for smooth and timely execution
of project.
6. Necessary shut downs shall be arranged by APDCL and it shall provide desired no. of workers for
this purpose in the concerned area of installation.
7. The Existing main service cable & load wire of the consumer shall be properly connected to the
meters. The outgoing leads from the meters shall be terminated into the existing cut out / load
point. Meter shall be installed at existing installed meter location / suitable place available nearby
the existing installed meter.
8. Renovation of installation / shifting / laying of service cable shall not be covered under the scope of
this specification. If Service cable replacement is required for some of the consumers in such case
contractor shall inform the concerned engineer in-charge of APDCL who will take corrective action.
9. The contractor shall arrange to transport all the material for installation Meter, Meter box PVC pipe /
casing capping , communication cable etc. up to the site where installation work is to be done along
with the persons and tool kit so as to make them fully independent to work at the site..
10. Contractor shall deposit the removed meters from the consumer’s premises and reading. of the
meters (old & new) at the time of replacement shall be recorded and handed over to concerned
utility’s Engineer.
11. All required installation materials/ consumable shall be procured by the contractor. The contractor
shall be responsible to arrange material like PVC Tape, GI / Steel screws, washer & plastic sleeve
(Gitty) for fixing of meter, PVC pipe etc..
The contractor shall quote the rates for the works mentioned in the bill of quantities, taking the
above materials into account, or any other material contractor may think would be required to
complete the work.
12. Sealing of Meter shall be carried out by APDCL staff.
13. Contractor shall establish an office in the area awarded and shall provide contact details of the
contact person incharge of the office for receiving and communicating instructions from/to APDCL’s
representative. The office shall be established at least 30 days before commencement of work.
14. APDCL shall provide district / area wise complete list of consumers along with their addresses,
service connection number, meter number etc. in soft copy, to the contractor along with the work
15. Separate display unit shall be connected at the consumer’s premises, suitable dressing of
communication wire with PVC conduit pipe / PVC casing capping shall be carried out as per site
16. The electricity required for installation shall be provided by APDCL free of cost.
17. Necessary work permit shall be issued to the contractor for the installation activity
18. Contractor shall intimate to the concerned APDCL’s representative if they find any malfunctioning
during installation.
19. The installation shall not be treated as complete until the replaced meter is returned to the
concerned Utility’s Engineer / store .
20. The APDCL shall provide area wise lineman to identify the consumers and required disconnection
of service line from main LT line.
21. Contractor shall demonstrate the operation of keypad of meter / handheld unit and its display the consumers.
22. The contractor shall provide complete connectivity along with firmware upgrade. Also, the
contractor shall integrate the prepayment vending system or the HES/MDM (when installed) with
the existing billing system of APDCL.
1. SCOPE: Scope of this specification shall cover Supply, Installation & Commissioning and provide
necessary support for smooth operation & running of thesmart metering system.
2. VALIDITY OF OFFER: Validity of offer shall remain for a period of 360 days.
Three distinct contracts shall be provided:
i) Supply portion
ii) Installation & commissioning
iii) Other related services.
While the contract for supply of equipments should be subject to excise duty and VAT/ CST, the
contract for services should be subject to service tax. The applicable taxes should be indicated in
the price schedule separately.
4. PRICES: Price quoted should be Ex-works and F.O.R. destination basis indicating ex-works price,
excise duty, sales tax and service tax separately. Break-up of prices shall be provided in Price
Any statutory variation in taxes and duties shall be to APDCL’s account.
5. GUARANTEE for Meter: Meter shall be guaranteed for a period of 60 months from the date of
commissioning or 66 months from the date of delivery whichever is earlier and Contractor shall
repair / replace free of cost if meter gets damaged within the warranty period.
Supply Portion: Commencement within 6-8 weeks from the date of purchase order and
shall be completed within 2 (Two) months from the date of order. Or can be mutually
discussed at the time of finalization of order.
Installation Portion: Commencement within 6 weeks from the date of receipt of 1st lot of
material at stores and shall be completed within 6 months from the date of receipt of
last lot of materials Or can be discussed mutually at the time of finalization of order.
Support for Operation & running the system: shall be initially for a period of 3 years
after the completion of the installation portion and can be extended further on mutually
agreed terms.
7. LIQUIDATED DAMAGES: 0.5% per week of the undelivered portion or unexecuted work portion
subject to maximum of 10% of the undelivered / unexecuted portion.
For Supply Portion:
 100% payment shall be paid after receipt of material at designated store.
For Installation and Commissioning:
 100% on completion of installation & commissioning.
For Services portion:
 Vending charges: 100% on monthly prorata basis on submission of bills
 Operation support for 5 years: Quarterly advance at the start of each quarter
FORCE MAJEURE : Force Majeure shall mean any event beyond the reasonable control of the
APDCL or of the Contractor as the case may be, and which is unavoidable notwithstanding the
reasonable care of the party affected and shall include, without limitation, the following:
(a) War, hostilities or warlike operations (whether a state of war be declared or not),
invasion act of foreign enemy and civil war.
(b) Rebellion, revolution, insurrection, mutiny, usurpation of civil or military government,
conspiracy, riot, civil commotion and terrorist acts.
(c) Confiscation, nationalization, mobilization, commandeering or requisition by or under
the order of any government or any other act or failure to act of any local state or
national government authority.
(d) Strike, sabotage, lockout, embargo, import restriction, port congestion, lack of usual
means of public transportation and communication, industrial dispute, epidemics,
quarantine and plague.
(e) Earthquake, landslide, volcanic activity, fire, flood or inundation, tidal wave, typhoon
or cyclone, hurricane, storm, lightning, or other inclement weather condition, nuclear
and pressure waves or other natural or physical disaster.
Shortage of labour, materials or utilities where caused by circumstances that are
themselves Force Majeure.
(To be filled by the Tenderer)
TENDER NO ________________
Rate per Unit for Door Delivery by
road at our respective stores
Sl. No. Particulars Tendered Quantity Offered Quantity inclusive of loading, unloading,
stacking, F&I etc.
(Duties & Taxes extra)
Ex Factory
Taxes… %
Any other Tax
Freight &
Entry tax
Total Landed Unit
Note: Tender without showing Break-up rate shall be rejected outright. Taxes & Duties must be
mentioned clearly in % (percentage) in figure and in words.
Signature of Tenderer
This specification covers design, engineering, manufacture, testing, inspection and supply of ISI
marked A.C. single phase two wire solid state (static) / fully electronic smart energy meters of
accuracy class 1.0 and current rating 5-30 Amps for single phase with back lit LCD display as per
requirement given in this specification. This specification also covers load control with
connection and disconnection through relay & prepaid metering facility along with consumer
interface unit and vending system.
The single phase meter should be single phase two wire, two element type capable to record and
display energy in KWh and demand in KW for single phase two wire A.C. loads respectively for
power factor range of Zero Lag-Unity-Zero Lead, as per requirement given in this specification.
Meters should record total energy (fundamental energy + harmonic energy) and have
facility/capability for recording tamper information in LT 1-phase Consumers.
It is not the intent to specify completely herein all the details of the design and construction
of material. However the material shall conform in all respects in high standards of engineering,
design and workmanship and shall be capable of performing in continuous commercial operation
in a manner acceptable to the purchaser, who will interpret the meanings of drawings and
specification and shall have the right to reject any work or material which in his judgment is not in
accordance therewith.
The offered materials shall be complete with all components, accessories necessary for their
effective and trouble free operation of the System for energy measurement. Such components
shall be deemed to be within the scope of Bidder's supply irrespective of whether those are
specifically brought out in this specification and/ or the commercial order or not.
In case of Foreign Manufacturer, the authorized Agents /Traders/Distributors may also bid
provided that they should be registered vendor and shall have all the testing facilities in India. It is
thus mandatory that in case of Indian manufacturer, the offered meter shall be ISI marked and
bidder shall have to furnish valid BIS certification along with the offer and in case of foreign bidder
the meter shall comply either BIS standard or standard of International Electro technical Commission,
i.e, relevant IEC, shall be marked with the same and bidder must furnish valid BIS or IEC
certification along with the offer, however the meter must comply this specification.
The complete system should be inter-operable and based on DLMS/COSEM standards.
While drawing these specifications, reference has been made to following Standard specification. In
case certain details are not covered in these specifications, the relevant Indian and International
Standard shall be applicable.
 IS 13779 (1999): A.C. Static Watt hour meter class 1.0 and Class 2.0
 IS: 16444 (2016) : A.C. Static Direct Connected Watt-hour Smart Meter IS
 15959:2011(Part I) and IS:15959 ( Part 2): 2016: Data exchange for Smart Electricity meter
Reading, Tariff and Load Control – Companion Specification Specification.
 IS 9000: Environment testing
 CBIP – No.304: Specification for A.C.Static Electrical Energy Meters (latest amendment).
 IS 15884: Alternating Current Direct Connected Static Prepayment Meters for Active Energy (Class
1 and 2).
 Voltage range: 70% to 120% of ref. voltage
 Frequency: 50 Hz +5.0% to –5.0 %.
 Temperature & Temp. Coefficient: -10 deg. C. to 70 deg, C. with temp. Coefficient as 0.05
 Humidity: 95% (sometimes approaches to saturation)
 Standard reference voltage: 240V
 Standard Basic Current: 5 Amps.
 Rated Max. Current: 30 Amps. (600% Ib)
 Starting Current: 0.2% of basic current
 Standard frequency: 50 Hz.
 Power consumption as per IS 13779
 Resistance to Surge voltage of 1.2/50 micro sec: 10 KV Peak
 The meter shall comply all general and constructional requirements as per IS 16444 and latest
amendment. Meter shall be designed and constructed in such a way to ensure especially personal
safety against electric shock, effect of excessive temperature, safety against spread of fireand
protection against solid objects, dust and water etc. All parts, which are subject to corrosionunder
normal condition, shall be effectively protected. Any protective coating shall not be liable todamage
by ordinary handling nor damage due to exposure under normal working condition.
The meter shall be projection type and dust and moisture proof. The meter base & cover shall
bemade out of unbreakable, high grade, fire resistant, reinforced Polycarbonate material so as to
giveit tough and non breakable qualities. The meter body shall be type tested for IP51 degree of
protection as per IS 12063 against ingress of dust, moisture & vermin.
 Standard terminal block as per IS: 13779/1999 (amended up to date) shall be provided. Moulded
terminal block for current and voltage connections conforming to relevant standard to meet the
requirement of terminal connection arrangement shall be provided. The termination arrangement
shall be provided with a transparent terminal cover and shall be sealable independently to prevent
unauthorized tampering.
 All insulating materials used in the construction of the meter shall be substantially nonhygroscopic, non ageing and of tested quality.
 All parts that are likely to develop corrosion under normal working condition shall be effectively
protected against corrosion by suitable method to achieve durable results.
 The thickness of material for meter body should be2mm minimum for polycarbonate material.
 The meter should have internal Real Time Clock with the backup of a Lithium Maintenance
free battery of minimum life of Ten (10) years for operation of the time clock. The Real Time Clock
shall be based on Quartz crystal timer so as to make it independent of line frequency variations.
The clock shall be factory calibrated. The clock accuracy shall not vary more than ±3 min per
year and it will be temperature Compensated from 0° C to 50° C.There should be provision to
synchronize meter RTC via laptop/HHU and HES (when the facility is provided) through
authenticated password only.
 The provision shall be made on the Meter for at least two seals to be put by utility user. However
the supplier shall have to supply meters dully sealed with two nos. of Polycarbonate seals
having supplier's logo and serial numbers.
 The meter shall be provided with flashing LED to represent the pulse output for testing the meter
by suitable testing equipment. The operation indicator must be visible from the front.
 It shall be possible to check the accuracy of active energy measurement of the meter in the field by
means of LED output. Resolution of the test shall be sufficient to enable the starting current test in
lessthan 10 minutes and accuracy test at the lowest load shall be completed with desired accuracy
within 5 minutes.
 The meter should have either one CT& one shunt OR one shunt & one sensor OR two shunts or
two CTS, having CTs with adequate magnetic shielding.
 For Shunt type meters, the single phase meter shall be based on a E-beam shunt in the phase
element and a Current Transformer/Shunt/Hall effect sensor in the neutral element.
Alternatively, measurements in both the phase and neutral elements may be done using
shunts with proper isolation. However, in case of using one CT the same shall be used in
neutral element. The short time current rating shall be as per IS: 13779: 1999. The shunt(s) should
preferably be directly soldered to the meter PCB, i.e. no wires should be soldered from the shunt
to the PCB.
 PT less design is highly preferred i.e. for powersupply to PCB, in place of conventional
electromagnetic VTS, use of potential divider is preferred
 The meter shall also be capable to withstand phase to phase voltage (415V) if applied
betweenphases to neutral for minimum 15 min.
In meter, power supply unit should be micro control type instead of control transformertype to
avoid magnetic influence.
 The RTC battery & the battery for display in case of power failure should be separate.
 The measurement by meter shall not get influenced by injection of AC voltage/ chopped signal /
DCsignal and harmonics on the terminals of the meter.
The meter should have facility for data retrieval through optical port using Hand Held Unit
(HHU)or Laptop PC. Sealing arrangement for Optical port shall be provided.
 The meter shall record and display total energy including Harmonic energy.
 The meter shall keep log in its memory for unsatisfactory / non-functioning of the following:
o Real time clock (RTC) Battery: Unsatisfactory functioning of Real
Time Clock battery
shall berecorded and indicated in reading file at base computer software end.
o All display segments: “LCD Test” display shall be provided for this purpose.
o Vendor shall have to submit predefined copies of all the software’s i.e. meter reading
software forCMRI, Base computer software for meter data analysis and technical details
o The meter shall be software calibrated at factory end and shall be supplied with Certificate
alongwith dispatch. However modification of calibration should not be possible at site. The
meter shouldnot have any form of mechanical adjustments such as trip pots potentiometer
etc. for calibration.
o The meter shall be tested, calibrated and sealed at manufacturer’s works before dispatch.
Further,no modification of calibration shall be possible at site by any means what so ever.
o Meter shall be capable of withstanding switching and transient surges of highest level so
as toprotect the internal meter circuit.
1.7.1 Materials of base/cover/terminal cover:
 The construction of the meter shall be suitable for its purpose in all respects and shall be given
reasonable assurance of continuous performance in all mechanical, electrical and magnetic
adjustments. The construction shall be such that the meter is not prone to produce audible noise in
use. The meter cover & terminal cover shall be of injection moulded in transparent UV stabilized
polycarbonate in a natural transparent colour.
 The meter base, cover and terminal block cover (ETBC) shall be injection moulded and made of
unbreakable high grade flame retardant polycarbonate having good dielectric and mechanical
strength to ensure high reliability and long life. The construction of the meter shall be suitable for
its purpose in all respects. The meter shall be compact & reliable in design & shall be immune to
vibration & shock involved in transportation/handling. The entire design and construction shall be
capable of withstanding the severe stresses likely to occur in actual service.
 The meter base shall be manufactured from high quality industrial grade material viz.
Polycarbonate with 10 % glass filled which shall meet following properties to ensure higher reliability and
long life of the meter case. Meter base, cover & terminal cover shall conform to the following:
 The meter manufacturer has to submit test certificate for materials used from reputed
Lab/originalsupplier’s lab. For every lot offered for inspection.
 The thickness of casing, base & terminal cover shall be 2.0 mm +/0.2mm.
 Sufficient clearance shall be allowed between terminals. Further, the supporting webs betweenthe
two terminals of the terminal block should be sufficiently high to ensure that the twoneighbouring
terminals do not get bridged by dust or it is not possible to have flash over betweenadjacent
terminals of terminal block.
 The terminals shall be of suitable rating to carry 150% of Imaxand made of electro- plated (or
tinned) brass. For verification the test will be conducted at Vref, 150% Imax, UPF for two
hours.After the test no physical damage should occur & % error should not exceed accuracy
class of the meter at lb, UPF.
 All connection screws and washers should be tinned/nickel plated brass. The terminal
screws shall not have pointed end at the bottom. All terminals will have two screws. The
terminals shall be properly bound in the insulation. Sufficient clearance can be provided
between terminals to avoid possible flash over.
 Aluminum crimping pins of suitable size shall be supplied by the manufacture's along with
the Meters for proper termination of the cable ends which are to be packed in a polythene
cover and tagged to each meter (for termination incoming & outgoing Aluminum leads).
 The shunt shall be directly terminated on terminal block without using lug. Alternatively, the
termination of current wires, if used inside the meter (shunt) on the terminal block should be
through lugs and washers of proper size. The loop length of the primary current circuit
should be kept minimum.
 The embossing shall be provided on meter base, meter cover, terminal cover and terminal
block as under UV STABILISED'. 'APDCL' and manufacturer's logo/ trade name.
At least two sealing screws of Nickel plated steel shall be provided for proper fixing of meter cover. Each
sealing screw shall have two independent sealing holes. One hole should be provided in the head and
one in the bottom portion, so that two separate seals can be provided. The diameter of the hole shall
be 2.0 mm and 1.5 mm for the head and bottom portion respectively. The length of the sealing screw
shall be long enough to flush with the ground.
Meter shall have two fixing holes, one at top & other at bottom. The top screw hole shall be provided on
back of the meter so that screw head are not accessible after the meter is fixed. Lower hole shall be
provided inside the terminal compartment so as to make them in accessible to an unauthorized person
after terminal cover is fixed.
The sealing screw used for the meter cover shall be fixed upside down so that these are tightened
from the rear. The sealing screw shall be BRASS or Nickel plated steel. In addition to the sealing
screws provided for the meter cover, there shall be one or two similar tinned brass or nickel plated steel
sealing screw for the terminal cover.
In addition to 2 Nos. of polycarbonate seals, further 2 Nos. of tamper proof void seals are to be provided on
the Meter body in such a way that both the side covers shall be sealed by the tamper proof void seals.
All insulation materials used in the construction of meter shall be substantially non hygroscopic.
All parts, which are subjected to corrosion under normal working condition, shall be effectivelyprotected
against corrosion due to atmospheric condition. The protection coating shall not beliable to damage by
ordinary handling or injuriously affected by exposure to air under normalcondition of service in actual
practice in Assam state.
All electrically live screws shall be of heavily tinned brass or nickel plated steel. All other screwsshall be
The terminal block shall be of POLYCARBONATE of FR & glass filled quality & shall fulfil following
 It shall have the glow temperature of 960 deg. C when tested as per IS :11000 (part2/secl)1984
or IEC 60695212
 Ball pressure test of 125 deg. Centigrade. as per IEC —60695102
 Heat deflection test of 132 deg. C. as per ISO 75/AeHDT/Ae, 1.8 Mpa edge 100mm
 It shall confirm to flame retardant (FR) rating of VO as per UL 94 testing OR vertical specimen
method as per IS —11731 (Part2) —1986 ( FVO category)
1.7.2 Type of terminal cover :
a) The Terminal cover shall be transparent, extended open type & shall enclose terminal compartment
except for the provision of conductor entry at the bottom for incoming &outgoing leads.
1.7.3 Length and materials of terminal:
a)The length of terminal in the
terminal block shall be adequate to have a proper grip of
theconductor with the help of the screw.
b)The internal diameter
of terminal holes should be 4 to 6 mm. The materials of the terminals shall
be of appropriately plated brass.
1.7.4Type of terminals:
a) The terminals shall be suitable to carry rated continuous maximum current and short time overload
current & be made of brass. PC ends shall be provided with lugs.
1.7.5 Terminal screws:
The terminal screws shall not have a thread sizes less than M4 and less than 5 mm dia. The screws
shall not have pointed end of threads.
1.7.6 Terminal screw materials:
The materials of terminal screws shall be of brass.
1.7.7 Clearance between adjacent terminals:
The minimum center to center clearance between the adjacent terminals shall be 13 mm.
The top cover should be chemically/ultrasonically welded with the base on three sides so that there
should be clear evidence if the meter cover is opened.
1.8 Name plate:
The name plate shall be marked indelibly and it should not be possible to alter the name plate
information. The name plate marking shall not fade with lapse of time. Laser marking is preferable
The basic marking on the meter nameplate shall be as under:
Manufacturer's name and trade mark
Type designation
 Serial number
Month and Year of manufacture
Reference voltage
Rated & Maximum Current
Principal units of measurements (KWH)
Meter constant (Amp/ kWh)
'BIS' Mark (Applicable for Indian meter manufacturers only)
Accuracy Class of meter (class-1.0).
Property of Assam Power Distribution Company Ltd. (APDCL)
Purchase Order No. & date
Guarantee period- 66 months from the date of manufacturing.
The above detail shall be clearly visible, effectively secured against removal and distinctly
1.9 Printed circuit board:
The fully tested double layered glass epoxy shall beused. The latest technology such as hybrid
microcircuit or application specific integrating circuit (ASIC) shall be used to ensure reliable
performance. The mounting of components on the PCB shall be SMT (Surface Mounted Technology) Type.
The electronic components used in the meter shall be of high quality from world renowned manufacturers
and there shall be no drift in accuracy of the meter for at least up to 5 &1/2 years.
Display of measured value:
 The seven segment LCD displays of minimum 8 mm height shall be provided. The Push Button for
manual scrolling in addition to Auto scrolling with a persistence time of 10 seconds for each
parameter shall be provided.
 The display shall have a backlit LCD. The backlit should not glow during normal operation or power
off condition. The backlit should only glow during push button mode. The decimal units shall not be
displayed for Cumulative kWh in auto scroll mode. However it shall be displayed in push button
mode for high resolution display for testing. The meters shall have bright LCD Electronic display
with back lit. The LCD shall be of STN (super tested pneumatics type) constructing suitably for
temperature withstand of 80° C (storage) & 65° C (operation) i.e. When the meter is placed over at
a constant temperature of 65 C for a period of 30 minutes, the character of LCD should not deform.
 After keeping the meter at a constant temperature of 80 C for a period of 30 minutes and when
restored at normal temperature, LCD display should work satisfactorily. The LCD display should
have a wide viewing angle of 120° C and up to one meter distance, for clear visibility of the display
of the meter reading at distance. Large viewing area with large display icons is preferred. The
registered parameters shall not be affected by loss of power. The display shall not be affected by
electrical and magnetic disturbances. The meter shall make use of nonvolatile memory capable of
storing and retaining all the data required to be stored, without the help of any power source or
battery backup and shall have a minimum retention time of 10 years under unpowered condition.
Dot Matrix type LCD display is not acceptable.
 The single phase meters shall be capable to measure and display continuously "Total Active
Energy KWh" at all loads and power factors i.e. zero lag unity zero lead. The meter should also
have provision for automatic recording of cumulative KWh at 24.00 Hrs on the last day of the month
for each calendar month and the same should go to memory.
 On auto scrolling mode following parameters should be scrolled:
a)Instantaneous voltage
b)Instantaneous phase current
c)Instantaneous neutral current
d)Instantaneous active load in Kw
e)Cumulative Active Energy KWh.
 Push button (Manual) Scrolling:
Following parameters one after another through push button should be provided on the meter display.
o LCD segment check
o Date and time
o Serial no. of meter (Given by APDCL)
o Instantaneous voltage
o Instantaneous phase current
o Instantaneous neutral current.
o Instantaneous active load in Kw
o Cumulative total active energy (KWh)
o Bill Point total active energy (kWh)
o High resolution display for total active energy ( KWh )(for dial test)
o Present Maximum Demand KW ( since last reset )
o Bill Point Maximum Demand KW
o Total Cumulative Active Energy for each calendar month for previous six months.
o Temper wise nos. of count with easily interpretable notations.
 The facility for reading the meter in absence of power supply shall be provided. This facility shall be
powering from a separate internal battery. The internal battery provided shall be of long life of not
less than Ten years and shall be kept trickled charged from the mains supply source under normal
conditions, alternatively suitable Lithium battery of more than 1 Ah capacity and having minimum
life of 10 years shall be provided to ensure longer life even during prolonged power OFF condition.
The battery shall not damage the meter even during prolonged idle storage of the meter. Themeter
should record Total cumulative KWh reading and KW — MD at pre-programmed date and time of
the month for minimum last 12 calendar months and stored in NVM with TOU (Four Tariff register
and eight time zones)
 The energy meter shall continuously monitor and calculate the average maximum demand for each
demand for time interval of 30 minutes and maximum of these in a calendar month shall be stored.
30 years calendar shall be programmed by manufacturer. Resets should be auto-monthly or
through communication command, integration period should be programmable.
 The meter shall be capable to measure and display:
a) Cumulative Total (Fundamental+ Harmonics energy) KWh for tariff billing purpose,
Instantaneous KW,
Instantaneous Voltage,
Instantaneous line current,
Power Factor ,
f) MDKW,
g) Time and date.
 The meter shall also be capable of measuring, monitoring and storing in the memory minimum four
(4) register with 3 zones of time of day electrical quantities for pre-specified periods of the day.
Zones for TOD i.Peak hours -17.00 to 22.00 hrs
ii.Night hours - 22.00 to 06.00 hrs.
Iii.Balance Hours —06.00Hrs to 17.00 hrs.
 The maximum demand shall automatically be reset at 24.00 hours of the last day of each calendar
month. No reset push button shall be provided.
 Maximum Demand Integration Period: Integration period for KW MD should be of 30 minutes real
time based. However the same shall be programmable through CMRI or Laptop. Also it should be
programmable via HES (High End Server) through authenticated password only when the facility
for HES is provided.
1.11 Output device:
 The meter shall have suitable blinking LED test output accessible from the front.
 The test output should be suitable for use with sensing probe used with test bench or Electronic
Reference Standard Meter.
 The test output should also work as operating indicator for meter.
 Output device shall be suitable for optical scanning for test purpose.
1.12 Communication Capability / Communication Port:
 Optical port will be provided for local communication. The port for local communication and baud
rate shall be as per IS 15959.
 The meter should be modular in nature and support Plug and Play Communication i.e. it should be
possible to replace / upgrade the communication module in the field. The communication module
will be used for communication between Meter and Data Concentrator Unit only when remote
communication facility will be installed. The communication module could operate on RF / Wifi /
GPRS/ GSM. Different communication technologies shall follow relevant National or International
Standards as applicable.
 There should be sealing arrangement such that the communication module cannot be altered
without breaking the seal
 It should not be possible to reset the energy reading in the meter or make any change in the data
stored in the meters either current or historical, with the MRI/laptop.
 The compatibility of transferring data from the meter to MRI and then to the base computer system
(BCS) should be easily established; any change in language or any other reasons, the supplier
shall modify it at his own cost within the guarantee period.
 All meters shall support the open protocol (DLMS Indian Companion Specification-15959).
a) Meter Reading Instrument (MRI)
1. The CMRI shall be supplied in the ratio of one for each 1000 nos. of meters free of
cost along with battery charger.
2. The MRI shall have facility to store minimum 200nos. of meter's data. The supplier
shall indicate nos of meters' data which CMRI could retrieve.
3. Further, there should be a facility in CMRI to provide the transfer of meter data to
computer through USB port.
4. The MRI shall be capable for down loading readings of other makes of meters. The
bidder shall give an undertaking to this effect.
5. The MRI shall have a feature to read multiple meters within the range without preprogramming the meter serial numbers in advance.
6. It shall be responsibility of the meter manufacturer to provide the required software
and all the facilities required by the purchaser, to use the MRI for reading and
retrieving the data from the meter and to download the data to BCS free of cost till
the expiry of guarantee period. The downloaded data shall be converted to the
ASCII or database file format for easy integration with the existing billing software
b) Readings to be downloaded with MRI:
1. The meter shall possess a suitable fast reliable communication port for manual /
automatic transfer of data from Meter to CMRI. Arrangement in the meter should be
such that, in case of failure of power supply, it should be possible to download the
2. The MRI shall possess easily replaceable battery and shall be capable of storing
data for minimum 200 nos. Meters at one time.
3. The CMRI shall posses a specific serial number which cannot be changed. The
downloaded data along with date and time stamp of such reading shall remain on
CMRI with suitable encryption and it should not be possible to pre-program or
manipulate the recorded data on the MRI before download in the same with the
serial number of MRI on computer. The MRI shall also download the serial number,
make of meter, year and month of manufacture of meter. The Supplier shall supply
(compatible with Windows xp and Windows 7 system and/ or
higher) and training, free of cost for the use of software at multiple data collection
and billing premises of the utility.
4. After successful downloading of meter data to MRI, an indication on MRI and meter
for confirmation of successful data transfer shall be provided. During this period the
energy recording should not be affected.
5. Necessary upgrades shall be possible in MRI software and shall be supplied free of
cost for downloading simultaneously the existing parameters and any parameters
added in future specifications of meters. A copy of operation manual shall be
supplied along with each MRI. The Supplier shall provide meter reading protocols
free of cost which shall not be complicated and easily understandable by APDCL
officials to introduce compatibility between meters and MRIs of different makes.
c) It should be possible to download the following data from the meter memory:
I. Serial Number of meter
II. Cumulative total active energy (KWh)
III. Cumulative total Active energy (KWh) for the last 12 calendar months
IV. Maximum Demand KW for last 6 calendar months with 15 minutes integration
V. Maximum Demand KW since last reset
VI. Instantaneous voltage
VII. Instantaneous phase current
VIII. Instantaneous neutral current
IX. Instantaneous load in Watt
X. The Tamper events like Magnet, Earth load, one line drawl (neutral missing),
neutral Disturbance & reverse current should be logged with date and time
(Occurrence & Restoration). 20 nos of each event should be recorded. The tamper
of Cover Open Event, Magnetic Interference shall be communicated back to HES
as and when they occur. These tamper events shall be sent as an alarm to the
HES which shall store the same in its data base.
XI. 45 (Power ON) days data to be recorded with 30 minutes integration period with
date & time stamping for Active Energy Reading, Average Voltage, Average
Current., average PF, Average KW
d) Power Quality Information; Logging of quality of supply events like power on/off, over/under
voltage, ( 20 events /EACH). Setting of Under/Over Voltage shall be decided by utility.
e) Alarm: Alarm for power on/off, Under Voltage, Over Voltage, Over Current, Mal functioning
of relay, malfunctioning of diagnostic events shall be generated and communicated to the
HES immediately. It should be definable at HES.
e)Load Control:
I. Relay for connection/disconnection
II. Phase and Neutral Disconnection on the following conditions:
Over current
Load Control Limit.
Pre-programmed Tamper conditions
Disconnect signal from Utility Control Centrevia HES such as balance unavailable only
when full communication infrastructure is installed.
iii.The reconnection mechanism is as follows:
I. The switch re-connection shall be decided by meter locally. It will try to re-connect the load up to
3 times, with 5 minutes interval.
II. If the consumption is still more than the programmed limits, it will lock out and wait for 30 minutes
(lock out period).
III. If the consumption is still above the limit, the procedure as defined above in i) and ii) shall be
repeated. The number of re-connection attempts, time interval between re-connection and lockout period shall be programmable by APDCL.
Reconnection mechanism:
Reconnection shall normally be done from meter locally. Reconnection through HES shall be possible
only when the full communication infrastructure is installed at a later stage. Relay for connect/disconnect
shall comply all relevant requirements of IS 15884.
Connect/Disconnect Indication:
Connect/Disconnect facility to be provided on both the wires i.e. phase and neutral simultaneously.
I. Status of Relay — i.e. Connected / Disconnected should be available on display as well as
through communication.
II. Connection and Disconnection should also be logged as events. Such twenty events
should be recorded.
f) Programmability: It should be possible to program the parameters limits / values from at site through
sufficiently adequate security mechanism. Programmability via HES should be provided when required.
Once programmed it will be possible for the programmed parameters to come into effect from a certain
date & time. Meteorology under such condition must remain intact and shall not be upgradable from
g)Communication Protocol: The meters shall follow DLMS protocol for communication as per IS 15959
Part 2 (2016).
h)RTC& time synchronization: Meter shall have RTC with 20 years calendar programmed in thememory
and provision for time synchronization.
1.13 LED / LCD indicators: Meter should indicate following indicators of size 5 mm.
•LED indicator for Meter calibration (RED)
•LCD indicator for Current Reverse Indication.
•LCD indicator for Earth Tamper Indication.
•LCD indicator for One line drawal (neutral missing) Tamper Indication.
•LCD indicator magnetic influence Tamper Indication. The LCD notation must be easily interpretable
 Licensed copies of the following software shall be made available and shall be installed on each
HHT or common meter reading instrument (CMRI) and Base computer software (BCS) by the
a) HHT or Common Meter Reading Instrument (CMRI) Software for reading, downloading
meter data. The software shall be user friendly.
b) Windows based user interactive Base Computer Software (BCS) for receiving data from
HHT or CMRI and downloading instructions from base computer software to CMRI.
c) Necessary software for loading application program into meter via CMRI.
 The supplier should ensure that software supplied with this package works properly with CMRIs of
other manufacturers.
1.15 Self-diagnostic feature
The meter shall be capable of performing complete self diagnostic check to monitor the circuits for any
malfunctioning to ensure integrity of data memory location at all time.The meter shall have indication for
unsatisfactory/nonfunctioning/malfunctioning of the following:
 Time and date on meter display
 All display segments on meter display
 Real Time Clock (RTC) status in meter reading prints out at BCS end
 Nonvolatile Memory (NVM) status in meter reading prints out at BCS end.
1.16 Last Gasp Outage Alert(Only after communication infrastructure installed)
The end point (smart meter) shall have functionality that when power goes out for more than 60 second the
end point shall send a power outage message to HES which shall be populated on outage m map of HES.
This functionality shall help utility to identify the power outages on real time basis.
The meter shall meet EMI/EMC requirements as specified in the relevant standards and shall also be
protected against radiated interference from either magnetic or radio frequency sources. The meter shall be
designed in such a way that the conducted or radiated electromagnetic disturbance as well as electrostatic
discharge do not damage or substantially influence the meter.
The disturbance(s) to be considered are:
Voltage dips and short interruptions
Fast transient burst test
External D.C. and A.C. magnetic fields
Electromagnetic H.F. fields
Electrostatic discharges & HVHF Field
Radio frequency interference suppression
Radio frequency interference suppression.
2.2.1 Insulation Resistance.
The Insulation resistance between both current circuits and voltage circuit connected together and earth
(Frame) shall be more than 5 Mega Ohms.
2.2.2 Impulse voltage:
The meter shall withstand impulse voltage without any damage in line with relevant clauses of IS 13779
with latest amendments. Error at Ib, Upf before & after will be measured & after the test, variation in % error
of the meter shall not exceed 50 % of class of index.
2.2.3 A.C. voltage:
The meter shall withstand 4 KV A.C.Voltage for one minute. This is applicable during lot inspection also.
2.3.1 Limits of Error:
The meter shall comply all the requirement of limits of error as per IS 13779/99 on all the points mentioned
in table no.15 of IS including special test at 0.25 lag & 0.5 lead of APDCL requirement. % error at 0.25 leg
and 0.5 lead is ± 3.5% and ± 2.5% respectively for range from 0.1Ib to Imax Same tests are to be carried
out on neutral circuit also with the procedure and limits as per phase circuits.
2.3.2 Meter Constant:
Meter constant shall comply relation between test output and indication in the display with marking on the
Name Plate. The manufacturer / bidder shall state necessary number of pulse/count to ensure measuring
accuracy of at least 1/10 of the accuracy class at different test points.
2.3.3 Starting:
The meter shall start and continue to register at 0.2% of basic current at reference voltage and unity power
2.3.4 Running with no load:
This test shall be carried out as per provision of IS 13779/99.
2.3.5 Repeatability of error test: (For Acceptance)
Repeatability test at 5% and 100%Ib at unity power factor as per IS 13779/99 shall be carried out during
inspection of lot. And the difference of maximum and minimum value should not be more than half of the
limit of class of index.
2.4.1 Power Consumption:
 Power Consumption of voltage circuit: Should be as per IS:13779
 Power Consumption of Current circuit: Should be as per IS:13779
 Short Time over current: The meter shall be able to carry short time over current of 30 Imax for half
cycle at rated frequency.
 Initial start of the meter: The meter shall be fully functional within five second after therated voltage
is applied to the meter terminals.
2.4.2 Influence quantities:
 The meter shall work satisfactory with guaranteed accuracy as per limit of IS: 13779 under
presence of the following quantities:i. External magnetic field.
ii. Electromagnetic field: The persistence and restoration time is 1 minute.
iii. Radio frequency interference.
iv. Vibration.
v. Harmonics.
vi. Voltage fluctuation.
vii. Electro static discharge & Electromagnetic high frequency field.
Note: The measurement by meter shall not get influenced by injection of AC
Voltages/chopped signal/DC signal / DC pulse of low frequency and harmonics.
 Under normal conditions of use, measuring element and insulation shall not reach a temperature,
which might adversely affect the operation of the meters.
 With each current circuit of meter carrying rated maximum current and with each voltage circuit
(and those auxiliary voltage circuits which are energized for periods of longer duration than their
normal time constant) carrying 1.25 times the reference voltage, the temperature rise of the
respective parts shall not exceed the value given below over and above an ambient temperature of
i. Measuring element: 50oC
ii. External surface of the case: 15oC
2.5.1. Meter shall record correct energy under reverse current condition. The indication of such reverse
current shall be provided by way of LCD on Display. Also Meter shall record correct energy during
interchanging of main and load terminal wires.
2.5.2. Meter shall record correct energy when load is connected to earth instead of neutral. The indication
of such event shall be provided by way of LCD on Display.
2.5.3. Flashing LED pulse output (with meter constant) for testing shall be provided by way of LED on front
2.5.4. The External Magnetic Influence:
The meter shall be totally immune to tamper using external magnets as per relevant IS/IEC.
2.5.5. The meter shall also be capable of withstanding the effects of Harmonics i.e. the test under the
influence of quantities as per clause no 11.2 of Table no 17(iii) of IS 13779/99.
2.5.6. The performance of meter shall not be affected under the influence of external DC/AC and
permanent magnetic field of high intensity as mentioned in latest version of CBIP technical report no 304.
This test shall be carried out in the Factory premises to check the effect of influence of external DC/AC
magnetic field of high intensity as mentioned in the latest version of CBIP technical report no 304 on each
lot offered for inspection. This test shall be carried out as per cl no for DC magnetic field &
for AC magnetic field of CBIP technical report (latest version). For DC abnormal magnetic field test the
same shall be carried out at 0.5 tesla as per the procedure specified in CBIP304. The bidders are
requested to enclose certificate of proof in this regard. Without the certificate from the reputed Govt.
approved lab.: NABL for Indian bidder and for foreign bidder the certificate should be from recognized Govt.
approved lab of that respective country, the offer shall not be considered.
Note: The error limit for “DC abnormal magnetic field and Permanent magnetic field test at 0.5 tesla” shall
be as per CBIP 304 cl no.
2.5.7. The meter shall not be susceptible to spurious signal / voltage (up to 100%) injected on neutral wire
of the meter.
2.5.8 The meter shall also be capable of withstanding DC injection and also meter shall not generate
conduct or radiated noise, which would interface with the other requirements. The above shall confirm to
requirements as per IS 13779/99.
2.5.9. DC Immunity : The meter should not saturate on passage of direct current which can cause the
meter either to stop recording or record inaccurately as per IS:13779 (latest version). The DC injection will
be tested on both the phase and neutral circuit. The procedure and limit as per phase circuit.
2.5.10. Measurement of total energy: The meter shall record total energy i.e. fundamental + harmonics to
be used for tariff billing purpose. The test for total energy shall be carried out as per IS:13779 along with
CBIP 304 version. The bidders are requested to enclose certificate of proof in this regard. Without the
certificate from the reputed Govt. approved lab.: NABL for Indian bidder and for foreign bidder the
certificate should be from recognized Govt. approved lab. Of that respective country, the offer shall not be
2.5.11. Test for total energy i.e. fundamental + harmonics as per CBIP 304 and other display parameters.In case of non availability of separate display the test for fundamental & harmonics, the test should be done
by using pulse method.
2.5.12. 35kV spark Discharge: Meter should withstand 35kV spark discharge for minimum 10 minutes and
should keep registering energy after the application.
2.5.13. Meter shall record the energy at Imax when magnetic field of beyond limit is applied or immune.
2.12.14. Meter shall record correct energy with error limit of +3%on reference voltage & actual current in
absence of neutral. LCD indication of such tamper shall be provided on display & meter should start to
record energy at min.1Amp.
2.5.15. Meter shall log “Cover Open” tamper as a non-rollover event when the meter cover is opened.
2.6 Remote Firmware Upgrade(After installation of communication infrastructure)
 It should be possible to upgrade the firmware of the meter to incorporate future demands and
 In case of firmware upgrade meteorology related data should not be affected.
 The accuracy and calibration data should not be affected in case of firmware upgrade.
 The firmware upgrade process should follow DLMS standards.
2.7 Prepayment
 The meter shall support Prepayment mode.
 The configuration of prepayment / post payment will be done by the utility using the HES /
MDMS(after installation of communication infrastructure).
 Prepayment functionality and tariff should comply to IS:15884
 The meters of Indian Manufacturers shall be guaranteed against any manufacturing defect or bad
workmanship for a period of at least 5 years from the date of commissioning or 5 & ½ years from
date of supply, whichever is earlier.
 The meters of foreign manufacturers shall be guaranteed for a period of 10 years from date of
Ordered quantity of meter are to be supplied in stipulated time.
The Inspection call shall be given after conducting all acceptance tests and the copy of routine
test certificates shall have to be submitted along with each meter to be supplied in lot. Each lot
shall be inspected at firm's works prior to dispatch of materials or as the case may be. The
materials shall not be dispatched without inspection.
The bidder should demonstrate the communication testing at their own laboratory and also at
site (subject to availability of net connectivity) through HES, witnessed and certified by minimum
three APDCL officials.
. Engineer of the bidder shall provide required setup to demonstrate:
Prepayment Functionality
Token generation
Remote Connection / Disconnection of load
Firmware Upgrade
HES functionality
MDMS functionality
The supplier shall have to submit test certificate of meter along with bid documents. Please note that the
Test Certificate submitted shall be as per APDCL’s specification and the same shall be verified .Certificate
of the following tests are to be provided:
Insulation resistance test as per IS.
 Impulse voltage test at 10 KV as per specification.
 AC high voltage test method as per IS but shall be taken at 4 KV for one minute.
Test for limit of error as per specification.
Interpretation of test results, if required.
Test for meter constant.
Test of starting condition at 0.2 % of basic current as per specification.
Test of no load condition as per IS.
Test of repeatability of error as per specification.
Test of power consumption as per IS.
Test for total energy i.e. fundamental + harmonics
Test for influence of quantities i.e .Voltage and frequency variation test and 10% of 3rdharmonics as
per IS
Test for influence of AC / DC magnetic field
Test for DC injection in both phase and neutral.
Test of Short time over current test as per IS.
35 KV Spark Discharge Test.
Test of terminals for withstanding 150 % I max as per Specification
Test for withstanding phase to phase voltage (415V) between phase to neutral for minimum 15min.
Verification of Display parameters and Functional requirement
The supplier shall have to submit all type test certificates from the Govt. approved laboratory viz: NABL, for
Indian bidder and for foreign bidder the certificate should be from recognized Govt.approved lab. of that
respective country, as per ISNo.13779/1999 or IEC 6205321 as the casemay be along with bid. After
opening ofTechnical Bid, no type test certificates shall beaccepted. Type test should not be older than 3
years. Also the type test certificate of AC/DC magnetic influence test and total energy test shall be
furnished on the same rating of meter. Without above type test certificate the offer shall not be considered.
APDCL reserves right to select randomly one meter from the offered lots for inspection for its type test and
if meter
during type test found failed then, either order placed shall be cancelled and supplier has to collect all the
meters at its cost for the supplied meters, or shall have to replace all supplied meters at their cost after
manufactured and successful type test within time frame given by the APDCL.
The Bidder shall have at least the following testing facilities for carrying the various tests Specified (as
above) for Proto type samples as well as LOT inspections to ensure accurate calibration as per IS:
13779(1999), Manufacturer should have fully automatic computerized meter test bench with printer & static
source for carrying out lot testing during inspection. The firm shall have dust proof & air conditioned
assembly & testing hall. Also all the equipment shall be calibrated from Govt. approved/NABL accredited
Three nos. of sample meters with one meter ultrasonically welded shall be submitted to APDCL’s
laboratory for sample testing within 15 days of opening of the Technical Bid. Date of testing shall
be informed to all the bidders. Engineer of the bidders shall come with BCS and token generation
system. Other than verification of sample meters as per relevant Indian Standards, below
mentioned tests shall be carried out:
1) Vending system operation.
2) Test of application of tariff.
3) Token generation.
4) Token punch & checking all display parameters on meter as well as parallel home display unit.
5) Balance available in the meter.
6) Test of friendly credit hours start & end time.
7) Test of disconnect the output supply once when credit reach to zero.
8) Test of reconnect the output supply on providing credit limit / charging with new token.
9) Test of disconnect the out supply if load / current exceed the preset value in the meter.
10) Test of reconnect the out supply if load / current falls below the preset value in the meter.
11) Test of visible / audible over load warning.
12) Test of visible / audible low credit warning.
13) All tampers shall be tested as mentioned in the specification.
14) MRI of meter for verification of tamper information with date & time stamping, load survey and
meter readings.
Note: The sample testing shall be considered successful only if all three meters pass all the tests
carried out at APDCL laboratory as per this technical specification and as per relevant Indian
 The meter shall be supplied with a separate In-home display unit /CIU.
 The display unit shall be powered up from the meter.
 The display unit shall have a LCD display.
 The display unit shall have a keypad to enter the code. The keypad buttons shall have
numbers/letters on them, which shall be same as used on standard telephones. Button “5” shall
have some form of physical identification to aid customers with poor sight.
 The display unit shall have an RJ11 connection port to connect to the meter.
 The display unit and energy meter shall be connected using a 4 wire connection cable (Similar to
telephone cable).
 The display unit shall have a buzzer to generate alarm signal in case of low credit and overload.
 The keypad IP rating shall be adequate to permit use with moist or wet hands whilst ensuring
safety of users and preventing ingress of dirt and water to the unit.
 The unit shall tone differently for successful and unsuccessful punching of tokens.
 The entry of codes for credit or commands associated for programming functions such as tariff
change, load change, etc. shall be via subsequent encrypted tokens only.
 Token encryption must be carried out using internationally accepted standard (e.g. Triple DES).
The meter should be programmable for the tariff order in vogue entirely compatible to electricity regulatory
commission and will be updated form time to time as per tariff order. This tariff shall be implemented into
the meter through concurrent token transaction via CIU (Consumer Interface Unit Keypad) or via HES (at a
later stage when complete communication setup is installed), not through any other physical mode/device
as a token carrier.
Following are the features required in the meter for Tariff Configuration:
Category Name: Every tariff category name shall be specified in descriptive alphanumeric
manner to recognize it easily.
Tariff Publication & Activation: The tariff shall support configuration of both instant and
delayed tariff publication & activation as desired.
Fixed Charges: Meter shall be able to deduct fixed charges on daily basis such as meter
rent, sanctioned load based charges etc.
Time of Day Tariff (TOD): The meter shall have the facility for recording and storing TOD
consumption as per the Tariff in vogue.
Slab Tariff: The meter shall have the capability for defining minimum six tariff slabs. It
shall also be possible to configureslab range at vending system that shall be implemented into
meter through concurrent vend token only.
Tax/duty: It shall be possible to define tax percentage through vending system which has
to be levied on the amount of energy consumed.
Rebate: There shall be provision to provide rebate to the consumers as and when
Debt Management: It shall be possible to collect the debt from the consumers with the
use of the vending system along with the interest receivable by APDCL. The debt percentage shall
be defined in the vending system to deduct such amount from every recharge token until recovery.
Minimum Charges: Using the online vending system it shall be possible to define the
minimum charge for the applicable tariff category.
Meter Rent: There should be provision to collect the meter rent from the consumer if
3.3 Vending System Requirements:
The meter shall work on the latest currency transfer keypad technology via CIU and via HES later
on supported by an online vending system through utility’s website/portal. The vending system shall use
Triple Data Encryption (Triple DES), i.e. it provides three levels of encryption for the vend token. The code
shall be meter specific and cannot be used in any other meter.
Note: For smooth transition, offered pre-payment system should be integrated with the existing
vending system and pre-payment meters of APDCL.
3.3.1. Vending System Process:
a) On receipt of the vend request the system shall have a provision to ascertain the identity of the
b) The vend terminal shall send the request to a central database that shall authenticate the
transaction and generate an encrypted code
c) In order to provide maximum security to the system the encryption shall not be done on the vend
d) On receipt of each request the vend terminal shall connect to the central database and get the
token generated.
e) The token hence generated shall be printed on paper using the attached printer.
f) The vending system shall be used to transfer currency values to the meter.
g) The consumer shall pay the money at the vend terminal, this information when fed to the vend
terminal shall be sent to the central database that shall encrypt the token using Triple Data
Encryption algorithm.
h) The system shall have the provision to transfer the balance amount into the new meter installed at
the consumer premises if in case the meter is being removed from the site, only via proper
authorized transaction via vending server.
i) On settlement transaction, meter shall disconnect consumer supply immediately on settlement
token being punched and balance shall be zero.
The token created for particular meter with the defined tariff shall not be used for any other
The meter shall accept the valid token only once.
The token shall not be reusable.
The token shall be re-issued in case it is lost.
Whenever a tariff change takes place, no other token shall be accepted by the meter
unless the updated tariff token is entered into the meter.
The token generated shall be authenticated as well as encrypted so that no decoding is
The Vending system must be certified to ISO/IEC 27001 which is the only auditable
International Standard which defines the requirement for an Information Security
Management System (ISMS).
3.5Disconnection switch (Single Phase Pre-payment meter):
The meter shall have disconnection switch in both phase and neutral to disconnect the load in case
of zero credit available. The switch shall be connected only after meter is credited with sufficient
amount and should not be closed by any other means. Switch shall be compliance with UC-3 in all
aspects. The switch shall be capable of isolating the LT network of the premise to which load is
connected and thus protect the meter’s internal circuitry.
The meter’s supply shall be disconnected under following conditions:
Zero balance available in the meter.
Exhaustion of emergency credit, in case the same is provided.
20.3 Meter shall trip the load which can be restored by pressing zero key, by the consumer,
under the following conditions:
High current defined asgreater than Imaxor Overload condition
4.1 COMMUNICATION INFRASTUCTURE(To be installed at a later stage):
The communication infrastructure should be based on RF Network or cellular network or a combination of
these. The communication network shall be based on suitable standards from ITU/IEC/IEEE/CEN/
CENELEC/ ETSI for NAN and WAN network. Communication network shall provide reliable medium for
two-way communication between various nodes (smart meter) & HES. RF based network should use
license free frequency band available in India. The engagement of network service provider would be in the
scope of AMI Implementing Agency to meet the performance level as given in the document.
4.1.1 General Requirement of Router based RF Mesh Network:
The general requirements for the Router based RF network are specified below:
 The communication network shall have dynamic & self-healing capability.
 The communication network equipment shall use license free frequency spectrum as defined by
Government of India.
 All the communication network equipment shall be certified by WPC,Government of India for
operation in license free frequency band.
 The communication network shall ensure secure communication of data to HES.
4.1.2 Configuration, Functionality & Interface:
 It shall be able to configure the communication with underlying nodes/endpoints.
 It shall support on demand read and ping of individual/group of meters.
 It shall push events like tamper, power off etc. to HES immediately on occurrence/receipt from field
 It shall have Wide Area Network (WAN) connectivity to the HES through suitable means.
 It shall communicate with routers/nodes/end points on RF mesh (license free band).
 It shall periodically monitor meter reads/downstream commands and shall retry and reconnect in
case of failed events/reads.
 After power Interruption, on restoration of power supply, it shall establish communication with
underlying devices as well as upstream application (HES) automatically.
 It shall be capable to handle interval data of suitable nos. of any type of smart meter (1ph/3ph).
Access point shall be able to acquire and send data to HES for full capacity (No. of meters/field
devices it is designed for) within a suitable time period to achieve the performance level. Full
capacity of access point is required to be indicated in the offer.
 Access point shall support remote firmware upgrades as well as remote configuration from the
control centre.
4.1.3 Data Concentrator Unit (DCU) based Communication Network
The Data Concentrator Unit is a gateway for communication of data between the Smart Meters and the
HES. The Data Concentrator Unit receives information from the Smart Meter on a scheduled / need basis
and stores the data, which can be accessed by HES for onward transfer to MDM. The DCU provides the
central link between Smart Meters and HES, enabling continuous/periodic meter read and control. DCU
shall exchange data from smart meters on RF / PLC communication and with HES on WAN. If
communication system is DCU based RF network, then following requirement shall be met.
4.1.4 Hardware & Power Supply of DCU
 Enclosure/box of DCU shall be minimum IP55 or better compliant. A suitable mounting
arrangement required for DCU installation shall also be provided.
 A suitable and optimum power supply shall be provided keeping in view that even in case of outage
in one or two phases, DCU can be powered.
 DCU should be capable of withstanding surges & voltage spikes of 6KV as per IEC
61000-4-5 standards. Power supply shall be terminated on suitable sized MCB to facilitate isolation
during on-site maintenance.
 DCU shall have battery with backup for 1 hour for normal meter reading, to push tamper event,
carry out on demand reading and the network health status/connectivity continuity & check. DCU
should have the suitable feature to send power outage and restoration message to the HES. The
battery shall have a guaranteed life of 10 years.
4.1.4 Configuration, Functionality & Interface of DCU
DCU shall have following configuration functionalities:
 It shall be able to configure the communication with underlying nodes/meters.
 It shall pull data from the field devices and push the data at configured intervals to the HES. It
should also support the HES in pulling data from the field devises/meters. The data acquisition
(Push/Pull) frequency shall be programmable. DCU shall be capable to prioritize control
 DCU shall ensure a secure communication to HES and shall have internal memory for storing
interval data for at least 5 days.
 DCU shall support on demand read and ping of individual/group of meters.
 DCU shall push events like tamper, power off etc. to HES immediately on occurrence/receipt from
field devices/meters.
 The equipment shall be weatherproof, dustproof and constructed for outdoor installation on poles
(minimum rating: IP-55). A suitable mounting provision shall be made for the equipment.
 Enclosure: Provision for security sealing shall be provided and in case the gasket of the cover is
used for protection against moisture, dust and insects, the gasket shall be made of weather and
aging resistant material.
 The list of standards followed in all the devices/equipment used in communication network shall be
4.1.5 DCU Communication
 The DCU shall ensure the appropriate backhaul for secure transfer of data to HES. In case of
GPRS/3G/4G backhaul, it shall support SIM card from any service provider. It shall have Wide Area
Network (WAN) connectivity to the HES through suitable means.
 DCU shall be able to communicate with meters either on RF (license free band) or PLC.
 DCU shall periodically monitor meter reads/downstream commands and shall retry and reconnect
in case of failed events/reads.
 It shall push events like tamper, power off etc. to HES immediately on occurrence/receipt from field
devices/meters. DCU shall be able to acquire and send data to HES for full capacity (as per
designed for no. of meters/field devices) to ensure the performance level.
 After Power Interruption, on restoration of power supply, DCU shall establish communication with
underlying devices as well as upstream application automatically.
4.1.5 Remote Firmware Upgrade: The DCU shall support remote firmware upgrades as well as remote
configuration from the control centre. Configuration of programmable parameters of smart meters shall be
done through HES. All meters falling under one DCU shall be commissioned and checked for proper
communication in presence of utility in-charge.
DCU shall keep the records of minimum of the following events:
No of packet failures
Retry attempts
Failure to connect
Tamper events
1. HES:
Head End System, is the critical interface to the field devices, which shall support Meter Data
Acquisition, Two way communication, poll meters for data collection, send remote firmware
upgrades / programmable parameter inputs to meters, send Load Curtailment signals,
Connect/Disconnect and send of pricing and other signals as generated from the MDMS/Other
applications to the Smart meter.
There would be 2 ways in which data would reach the Head End System.
1) PUSH:
This would mean that the meter / DCU would send the data to the HES. The HES would
acknowledge the receipt of the data. In case the Meter / DCU is not able to send the data to the
HES, the Meter/DCU would store the data and re-transmit the same to the HES whenever the
connectivity is available. The Metering system should also send the reason for the failure of
2) Pull:
This is when the HES would request for data from the Meter. The following data should be provided
by the meter as and when requested from HES:
 Meter Information
 Load Survey
 Tamper information
 Billing Data/ Billing History.
Meter Data Management System is an overall strategy, or process, for building decision support
systems and environments that support both everyday tactical decision-making and long-term
business strategy. A Data Warehouse is designed to manage historical data that does not get
updated once it is processed into the model.
MDMS is a Data Warehouse primarily designed for storing and managing meter data (5 minute,
15 minute, etc.), Billing data and load profile data along with the required ancillary information
needed to effectively “mine” and report useful information.
AMI system collect meter values from smart meter. AMI system deliver meter values to MDMS
thorough integration system. MDMS calculate both TOU and CPPrate based on tariff.
 Support multiple load profile saving and support Tariff-based Prepayment:
Prepaid subscription can be done using two approaches with
1) Smart meter (i.e.,meter w/o keypad and w/o reader): prepayment function of meter or
software prepayment. Regardless of the used method, there must be interface. When meter
supports prepayment function credit for purchased energy is transferred to meter from credit
charging system via billing system, MDAS and HES. The meter continuously decreases
remaining credit until no credit is left. When credit becomes zero, the meter automatically
disconnects supply of energy to the customer, and the meter maintains the disconnection
until new credit is received
2) When using software, prepayment credit for purchased energy is transferred to billing system
from credit charging system. HES collects measurement values and transfers to MDMS, and
MDMS transfers the data to billing system. Billing system decreases remaining credit
whenever it receives measurement values from MDMS. When the remaining credit becomes
zero or minus, billing system sends disconnection request to MDMS, and MDMS sends
disconnection request to the meter via
4.2 Network Security:
The network shall have adequate cyber security measures not limited to the measures as described below.
The network security would be extended to all the interfaces also.
 Secure Access Controls: The system shall include mechanisms for defining and controlling user’s
access to the operating system environment and applications. Measures such as password
strength, password ageing, password history and reuse prevention must be implemented.
 Authorization Controls: A least-privilege concept such that users are only allowed to use or
access functions for which they have been given authorization shall be available.
 Logging: Logs must be maintained for all attempts to log on (both successful and unsuccessful),
any privilege change requests (both successful and unsuccessful), user actions affecting security
(such as password changes), attempts to perform actions not authorized by the authorization
controls, all configuration changes etc. Additionally, the access to such logs must be controlled in
accordance to the least-privilege concept mentioned above, so that entries may not be deleted,
accidentally or maliciously.
 Hardening: All unnecessary packages must be removed and/or disabled from the system.
Additionally, all unused operating system services and unused networking ports must be disabled
or blocked. Only secure maintenance access shall be permitted and all known insecure protocols
shall be disabled.
 Malicious Software Prevention: Implementation of anti-virus software and other malicious
software prevention tools shall be supported for all applications, servers, data bases etc.
 Network Security: The network architecture of the HES must be secure with support for firewalls
and encryption. The system shall also allow host-based firewalls to be configured, as an additional
layer of security if the network firewall were to fail.
The meter box shall be intended to house one number Single Phase Smart energy meter. The meter
box shall comply with relevant Indian standard IS: 14772:2000 other applicable standard with latest
a. The meter box shall be made Transparent Polycarbonate material which complies following
b. Meter box shall be weather proof, capable to withstanding temperatures of Glow wire test at
650C as per IS 14772, HDT of meter box material shall be minimum 120C.
The meter Box shall have roof tapering down for easy flow of rainwater.
The thickness of the box shall be minimum 2.0 mm on all sides.
The overall dimensions of the box shall be such that a minimum 20 mm clearance from left,
right side and top side, 10 mm from front and back side 75 mm from meter terminals at
bottom side shall be maintain in between meter and box surface.
The box cover would be hinge type, 2 Nos. hinges would be provided.
Soft rubber gasket shall be provided all around the periphery of box for protection against
ingress of dust and water.
Meter Box would comply with IP - 54.
All metallic parts shall be well protected against corrosion.
Suitable hinge type cover with sealing arrangement shall be provide on the cover of the box
to operate the key pad of meter for taken no. entry without opening the meter box cover.
Two nos. latches shall provide to hold the base with cover along with provision of sealing
The provision for meter reading through CMRI shall provide on the cover of meter box
without opening the meter box cover along with separate sealing arrangement.
The front cover and base of meter box would be made of transparent Polycarbonate
Box Mounting Arrangement :
Box should have 4 nos. holes of 6 mm diameter for fixing the meter box on wall / wooden
Cable Entry:
Suitable provision would be available at the bottom side of the meter box bottom for cable
inlet & outlet and the same shall be capable of accommodating cable of 18- 22 mm
diameter, two nos. engineering plastic cable gland shall be provide for cable incoming &
Name plate:
Printed metallic name plate should have details of Purchase order No.& Date. It shall be
fixed with rivet such that it cannot be removed easily.
The following information shall be clearly printed on metallic name plate.
Property of XXXXXXX ( Purchaser’s name)
Purchaser order No. & date
Name / Brand name of Manufacturer
In addition to above Sign of danger shall be shall be engraved/ embossed on the cover of
meter box
The following tests are to be conducted on the box at any independent NABL accredited laboratory
and test reports shall be carried out as per relevant Indian Standard.
Test of HDT minimum 120 C
Test for mechanical strength
Glow wire test at 650C
IP protection class : IP 54
Physical verification of dimensions of the box.
Compatibility of the box for housing the meter, and ensuring ease of connecting and
reading the meter.
Sl. No. Particulars
Bidder’s Data
Maker’s Name :
Make :
Type of Meter/Design designation
State the year since the design is in vogue
Standard to which meters conforms
Class of accuracy
Rated Current (Amp)
Rated Maximum current as percentage of basic current :
Rated voltage (volts)
Rated frequency (Hz) :
Specified operating voltage range
Limit voltage range of operation:
Reference temperature :
Temperature range of operation
Specified operation range
Limit range of operation :
Limit range for storage and transport
Relative humidity
Annual mean :
For 30 days these days being spread in a natural manner over the years.
Occasionally on other days.
Power consumption
Power consumption in voltage circuit at rated current
(i) Active in watts
(ii) Apparent in VA
Power consumption in current (in VA) at rated current. :
Current that meter is capable of carrying continuously without injury to the meter (Amp) :
Short time over current capability of the meter. :
Size of terminals holes (in mm.):
Meter constant (if any) :
(a) Display type (LCD) :
(b) No. of digits in display
Sealing arrangement (specify) :
Whether sealing at the following has been provided :
(a) Body of the meter :
(b) Terminal cover of the meter.
Overall dimensions of the meter (with tolerance)
(a) Height (mm):
(b) Width (mm) :
(c) Depth (mm) :
Total weight of the meter (kg.) with tolerance
Material of meter box
(Transparent Polycarbonate )
Color of Box
i. Cover
ii. Base
Dimensions of box (L x W x H)
Clearance from Meter surface :
Left , Right & Top side 20 mm :
Bottom ( from terminals) 75 mm :
Front side 10 mm :
Back side 10 mm :
( General tolerance ± 5 mm)
Thickness of Meter box
Minimum : 2 mm
Sealing arrangement
Minimum :- 2 nos.
Inlet & Outlets with Engineering plastic
Suitable for outdoor installation
IP Class : IP 54
Meter mounting Arrangement
( 4 Nos. holes minimum 4 mm )
Heat Deflection Temperature minimum 120
Deg C
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