15 ABB-Make Carrier Terminal Type ETL 41

SUPPLY OF ETL-41 TYPE CARRIER TERMINAL

(I)

GENERAL :

Indoor PLCC Equipments are required for important 400KV, 220KV and 132KV Sub/station for Speech, Data Transmission, Protection and Teleprinter Links. (II)

GENERAL REQUIREMENT :

The equipments shall be of latest components, technology and highly reliable. The equipments offered must have been type tested. (III) SCOPE OF SUPPLY : ETL-41 Carrier Terminal ,4 Wire Telephone, Dummy Load Print for testing of Carrier Terminal on Loop, 75 Ohm Cylindrical Balance Load, 4 Nos. of UHF Connector (UHF Gland), Emergency test tone calling jack handset, industrial good quality single phase A.C exhaust fan for cooling of carrier terminal under operation, Operating instruction manual, Programming & tuning procedure manual etc., all are included in scope scope of of supp supply. ly. The Carrier equipment shall be supplied with fully wired complete in all respect with all interconnections between equipments wherever necessary and terminal blocks required for termination of external wiring or to provide interconnection between equipments to be integrated along with steel channels with fixing nut/screws. The equipment shall be of latest design with motherboard construction. You will have to impart free training of ETL version carrier equipments to at least 3 to 4 telecom engineers of G.E.T.C.O to get acquainted with the technology for our new incumbents. (IV) SPECIFICATION :

The equipments to be supplied under this specification shall function satisfactorily under tropical, hot, humid, salty and chemically polluted climatic condition with adverse temperature condition. condition. The equipment shall be manufactured and tested as per latest national or international standard (IS, IEC, CCITT, CIGRE, etc.) whichever is better. This will be clearly brought out by the bidder. The equipments offered shall confirm to, but not limited to following standards. (1)

IEC 495

- Single sideband Power Line Carrier Terminals.

GETCO/E/TS-PLCC 03402/R0, Dt: 2.04.2008

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(2)

(3)

IEC 834-1/1988 (Part-I)

- Performance & Testing of teleprotection equipments of Power system - Narrow band Command system. IEC 68-2-3/1969 - Environmental Testing Part-2 Tests section-3 Test Ca: Damp heat steady state.

In addition to the above, the carrier terminal shall be manufactured and supplied detailed as under: (IV)(A) CARRIER TERMINAL : It will be multipurpose equipment to transmit and receive speech, data, protection, tele-operation, telemetry, and facsimile signals. It will be manufactured and supplied as per following details.

The "Carrier Cabinet" shall be multipurpose cubicle suitable to accommodate carrier terminal, electronic group selector, protection coupler, modems for data transmission and band pass filters etc. All the equipments details as above shall fit into different tiers of the "Swinging Frame" fitted inside the above cubicle, swinging frame shall be of 14 SWG sheet steel. All the equipments fitted in above swinging frame shall be fully wired. It should be possible to test the equipment from front side and erect the cubicle side-by-side or back-to-back. The cubicle shall be made from 16 SWG sheet steel. It will have rounded corners with front door and lock. It will be designed for efficient cooling with an exhaust fan at the top inside the cabinet, to take away the heat generated within the terminal. Normally the cable entry shall be from the bottom, however, suitable provision shall be made for cable entry from top, which shall be covered by blanking plate at the time of supply. Visual indication shall be provided in front of the terminal at the top for indication of failure of carrier terminal i.e. Transmitter, Receiver or Power supply. There shall be provision for audio indication also. Suitable labels for identification of indication shall be provided.

The cubicle shall be provided with foundation holes for fixing the same on foundation. Air inlet shall be provided at bottom and Air Outlet with exhaust fan at the top. Any opening shall be provided with wire GETCO/E/TS-PLCC 03402/R0, Dt: 2.04.2008

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mesh for vermin proofing. The cubicle shall be completely dust proof and vermin proof. The cubicle shall go through seven-tank phosphating process and shall be coated with two coats of red oxide primer followed by synthetic enamel. 2 Nos. vertical C-Channels with slotted angles and 5 Nos. horizontal Patti with holes shall be provided inside the cubicle at backside for wiring purpose. The cubicle size shall generally match with existing cubicle and shall be of size 1960mm X 670 mm X 420 mm (Height x Width x Depth). It shall be provided with standard 19" tiers to house the modules. Three ways HF co-axial clamp with terminal shall be provided inside the cubicle at rear side. One 8 way electrical connector, a three-pin plug with fuse shall be provided for 250 V AC 3 Phase 50 C/S supply. The cubicle shall be fully wired. Arrangement for internal lighting shall be provided using 15-Watt fluorescent tube of Philips make. The equipment shall operate through 48V DC supply with voltage variation from - 15% to + 20% and ripple of < 2 % maximum. The carrier power supply module shall be provided with a circuit breaker, which shall automatically trip due to over voltage to carrier equipment and/or over modulation. The circuit breaker shall be provided in front of power supply module so that it is easily accessible. This circuit breaker shall be provided with a facility to switch on and to switch off the same mechanically by hand, by pressing and releasing a push button switch. A fuse shall also be provided in series of this circuit breaker, which shall operate in case of failure of the circuit breaker. Amplitude Modulation, single side band, 40W (which can be programmed for 20w/10w/5w, if required) peak envelope power at coaxial output including pilot and if any other carrier signal shall be provided. HF range shall be 40 kHz to 500 kHz. The equipments are meant for multipurpose application like speech, data, teleprinter and control command facility. The requirement of IS 9528 and IEC 663 shall be fulfilled for accurate transmission of control command, data and TP signals. A central frequency synthesizer, whose basic frequency is obtained from a crystal-controlled oscillator with very high frequency stability, shall generate the necessary frequencies required in carrier terminal. Thus


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a synthesized version carrier set shall be preferable. Carrier terminal shall be multipurpose, fully transistorized IC version with modular construction and mother board technique, fully programmable i.e. pilot frequency, audio freq. & carrier freq. with synchronizer and highly efficient for adjacent channel working to overcome frequency congestion problem. It will be suitable for 2-Wire services and Hand set/Emergency call telephone, which can be used for "Audio Test", shall be provided with necessary circuitry etc., together with handset. The transmitter shall be provided with 3 teleoperational input minimum (in addition to speech and protection input), which shall be fully decoupled and adjustable for level setting. Preferably inputs shall be through disconnectible links to avoid use of soldering irons for soldering and desoldering of wires from terminal block. Minimum separate tunable teleoperational output shall be provided, for the normal 600-Ohm termination. … Suitable facility for transit connection of teleoperational channel shall be provided. Additional outputs may be provided for this purpose. The "Signal Boosting" facility shall be provided for important signals like "Protection of Tele-operational signals". The speech is disconnected and entire output is available for protection signals. The bidder shall describe the arrangement provided. A built in "PLC EQUALIZER" shall be provided to overcome effect of amplitude distortion due to mismatch etc. Equalization facility for auxiliary carrier shall be described in details. A supervision module with necessary circuitry shall be provided to monitor Transmitter, Receiver and Power supply. Both the collective alarm and individual alarm shall be provided. Audio and Visual indication shall be preferable. The indication for squelch operation is necessary. Suitable potential free contact shall be provided for external alarms. The bidder shall describe in detail indications, internal alarm and external alarms provided. A module with built-in meter and oscillator with selector switch shall be provided with necessary circuitry to test and commission the PLC link without the help of an external signal for ease of inspection and testing. A cylindrical dummy load, dummy load print for testing shall be in the scope of supply. It shall be possible to test the equipment locally by GETCO/E/TS-PLCC 03402/R0, Dt: 2.04.2008

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a dummy load. It is preferable that equipment is provided with facility to test transmitter and receiver locally by connecting them back-to-back. Any extra optional print required for such type of test shall be in the scope of supply. Built-in AGC test for HF level variation of + 14 dB/-26 dB may be necessary. The local testing facility provided shall be described in detail by all bidders. The 4 Wire express telephone instruments shall also be in the scope of supply. The bidder shall have to provide training to four personals of GETCO on all the equipments covered under this specification free of cost at their works. All the test points with standard values, indications etc. shall be provided in front of the cabinet and shall be easily accessible. All the bidders should furnish full technical particulars of their equipment as indicated in Schedule-"A". The carrier terminal shall have a 4 kHz bandwidth so that it is compatible with UHF/Microwave equipment. Speech shall use bandwidth up to 2 kHz. The rest of the band shall be utilized for teleoperational channels. The bidder shall indicate possible number of teleoperational channels with speed. The pilot frequency shall be above 3600 Hz and should be programmable. The bidder shall indicate Frequency Spacing required between Transmit and Receive bands for parallel working of a number of Carrier Terminals on a Common Line. This will be indicated in Schedule-A. Low Power consumption shall be desired feature to maintain healthy communication during system disturbance. The equipment shall be suitable for co-axial cable having impedance of 75/125-Ohm unbalanced or 150-Ohm balance. This should be programmable. Carrier Terminal shall be provided with 4-wire jack; dummy load module, and 75/125-Ohm load in loose. Carrier Terminal shall have in built Digital Transit Filter with programmable frequency and also in built Compressor and Expander for improving the S/N ratio. The equipment must have gone through all environmental and field tests and shall work satisfactorily under hot, humid and polluted climate. It should have worked for at least five years successfully in Electricity


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Boards. It shall work satisfactorily up to 55 ° C. It shall satisfy a storage temp. Of 70 ° C. The Temperature criteria shall be shown by laboratory test by using hot chamber during inspection. The equipment shall be provided with a nameplate in front of cabinet indicating make, serial no., Transmit and Receive frequency and station Direction. The module layout and station direction and TransmitReceive Frequency shall be indicated behind the door. Bidder shall indicate guaranteed values for carrier terminal offered by him. This shall be indicated in Schedule-A. The bidder may quote different models being manufactured by them, which are equivalent to or better than the specified equipment. A Schedule of deviation from specifications shall be attached separately for carrier terminal in the form of Schedule-A/1. (V) CONFIGURATION:

The Configuration of 40 Watt Single Channels, Fully Programmable Carrier Equipment Type ETL-41 shall have following different cards/prints. • • • • • • • • • • • • • • •

B5LA : Power Supply Unit N3NL : Test Meter E5LA or E5LB: Tx-Filter (Detail of model will be decided later on & based on Tx/Rx frequencies). P3LA : RF Hybrid B4LA : 48V DC/DC Converter O4LA + E1LA : Tele Control Interface O4LC : 2/4 Wire PAX Interface P4LA : Pilot and Supervision P4LB : AF Converter P4LC : IF Converter P4LD : Rx RF Converter P4LF : Tx RF Converter P4LG : Carrier Generator P1LA : RF Amplifier P3LK : Dummy Load Print


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SUPPLY OF ETL-41 TYPE CARRIER TERMINAL •

Any other card/print required for proper working of carrier terminal. PREQUALIFICATION REQUIREMENTS : 1. The bidder shall be Original Equipment Manufacturer of the Carrier terminal. The offered equipments should have been designed, manufactured and tested as per relevant IS/IEC Standards with latest amendments. 2. The bidder should indicate manufacturing capacity by submitting fresh certificate of a Chartered Engineer (CE). 3. Equipment proposed to be supplied by bidder of similar or higher rating shall be in service for a minimum period of THREE (3) years. The Satisfactory performance certificate of corporate office of respective utilities should be submitted. 4. The bidder should clearly indicate the quantity and single value contract executed during last FIVE (5) years, for the offered equipment. The details of past supplies should cover, i) Same rated equipment as Offered supplied to GETCO (Erstwhile known as GEB). ii) Higher rated equipment than Offered supplied to GETCO (Erstwhile known as GEB). iii) Same rated equipment as Offered supplied to other Utilities. 5. The bidder shall furnish the copies of type test reports for the Carrier terminal not more than FIVE years old. Equipment Offered shall have all Valid Type Test Certificate from NABL accredited or International Laboratory. The Validity of Type Test report is 5 Years from the Date of Type Test Report. 6. The bidder shall furnish the full technical details & drawings for the Carrier terminal offered. 7. The bidder shall have the experience of at least 10 years of manufacture & supply of similar type of Carrier terminals. 8. The bidder shall furnish the full details of the orders executed. 9. Any deviation shall be clearly indicated separately. 10. The GETCO reserves right to increase or decrease the quantity at the time of placing the order. 11. The GETCO reserve right either to accept or reject any of the offers Without assigning the reason.


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SUPPLY OF ETL-41 TYPE CARRIER TERMINAL (VI) TYPE TESTS: Valid type test reports not more than 5 Years old performed for following tests along with all test results sheets & reference documents shall be submitted with the offer with ‘List of Type Tests’ in Performa- X Given here under. Performa – X:

Sr.No. Test Description of Standard/ Test report No. Remarks Equipment test conducted Clause & Name of test laboratory 1. 2 3 4 5 6

• • • • • • • • • • • • • • • • • • • • • • • • • • •

Voltage variation test Carrier frequency range & band Frequency Accuracy Transmit/receive frequency Difference Automatic gain control Harmonic Distortion Selectivity Nominal impedance, return loss and tapping loss Balance to Ground Limiter action Spurious emission Carrier frequency levels Attenuation Distortion Noise Generated within Terminals Near end/Far end Cross Talk Group Delay Distortion Conducted noise Telephone Signaling Channel Distortion Speech Levels Voltage withstand test and Insulation test Teleprotection interface Input and Output level Speech band Frequency band above speech band EMI/EMC tests Conducted emission Radiated emission


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SUPPLY OF ETL-41 TYPE CARRIER TERMINAL • • • • • • • • • •

Radiated Susceptibility Amplitude modulated Electrostatic Discharge Electrical Fast Transient (EFT) High Frequency Disturbance test Storage test Dry Heat test Cold test Damp heat test Impulse withstand Power Supply variations

(VII) DRAWINGS:

Following Drawings shall be submitted with the offer. • • •

Module Layout For ETL 41 : Unit Arrangement Cabinet Layout For ETL 41 Wiring Diagram For ETL 41 (DC Supply & Alarm)


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SUPPLY OF ETL-41 TYPE CARRIER TERMINAL S C H E D U L E "A" SCHEDULE OF GENERAL TECHNICAL DATA AND GUARANTEED TECHNICAL PERTICULARS ( TO BE FURNISHED BY THE BIDDER FOR CARRIER TERMINAL) SYSTEM PARTICULAR TECHNICAL PARTICULAR OF BIDDER'S EQUIPMENT 1. Name of OEM

2. Type/Model 3. Operating Mode 4. HF Band 5. Nominal Bandwidth 6. Send / Receive Band 7. Permissible line attenuation 8. Frequency spacing for parallel Working on a common line 9. HF System Impedance 10. Carrier Frequency Stability 11. Useful AF Bandwidth 12. Frequency Response 13. Linearity 14. Non - Linear Distortion 15. Near and Far End Crosstalk 16. Crosstalk Attenuation (Double channel) 17. Group delay 18. Basic Noise GETCO/E/TS-PLCC 03402/R0, Dt: 2.04.2008

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19. Audio Frequency difference Transmit to receive 20. Supervision alarms 21. Alarm Outputs 22. Ambient Conditions: (a) For guaranteed data (b) For reliable operation (c) Storage 23. Transmitter Data (a) HF Output Power (b) Harmonic and Spurious Signal Attenuation (c) Pilot channel with Programmable range of Frequency (d) Speech Input: 2 Wire 4 Wire (e) Limiter Characteristics (f) Suppression of unwanted side bands. 24. Telephone Criteria (a) Signaling (b) Transit / Terminal Switching (V) (c) Hybrid Switching (GA) (d) 4 - Wire remote / emergency Call telephone 25. Teleoperation Signals 25(A) Teleoperation I/P's (a) Number & type of I/P (b) Number of I/P with boosting Facility. (c) Nominal I/P level. GETCO/E/TS-PLCC 03402/R0, Dt: 2.04.2008

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(d) I/P level range (e) Balance referred to ground (f) Return loss (g) Minimum level for maximum RF output power. (h) Boosting criteria. 25(B) Teleoperation O/P's (a) Number & type of O/P's (b) Nominal O/P level (c) O/P level range (d) Maximum O/P level (PEP) (e) Balance referred to ground (f) Return loss @ Whether teleoperation I/P's & O/P's expandable by inserting additional interface module. @ Whether provision is made for Programmable Digital transit Filter, which allow to pass required Band & frequencies of Teleoperation signal. 26. Receiver Data (a) HF Sensitivity at coax input and at relative system impedance (speech) : Carrier Frequency (b) Selectivity : From 4 kHz Carrier Band (c) Image rejection (d) IF rejection (e) Automatic gain control:  AF Output Level  Time constant for 10 dB level variation (f) Hunting characteristics : Synchronising channel bandwidth with loss of synch. signal (auxiliary carrier) Synchronisation time with GETCO/E/TS-PLCC 03402/R0, Dt: 2.04.2008

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loss of signal for 1 second: Describe the method of synchronization (g) Frequency response equalization (h) Describe the method of Equilization (i) Speech outputs: • 2 wire • 4 wire • Symmetry against ground • return loss • DC source resistance (j) Signaling criteria : (k) Pulse distortion : (l) Squelch : 27. POWER SUPPLIES (a) Mains (b) Consumption (c) Battery (not isolated by dc / dc converter) (d) Consumption (e) Reflected noise 28. TEST EQUIPMENT 28(A) Test Tone generator. (Test Tone) 28(B) Audio Test : (a) Band width (b) Level range (c) Input impedance (d) Dummy load / test loop (Whether print required For loop test is provided) 28(C) Any other test equipments required. 29. Insulation test and electromagnetic compatibility: 29(A) Unbalanced Carrier I/O (a) impulse voltage test (b) HF interference test (c) Fast electrical transients/bursts


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29(B) Balanced Carrier I/O (a) Voltage withstand (b) Insulation resistance (c) Impulse voltage test (d) HF interference test (e) Fast electrical transients/burst FREQUENCY SPACING required for operation Of carrier Terminal on a common line: (a) Transmitting Band to Own Receiving Band : (b) Transmitting Band to neighboring Transmitting Band : (c) Transmitting Band to neighboring Receiving Band : (d) Receiving Band to neighboring Receiving Band :


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SUPPLY OF ETL-41 TYPE CARRIER TERMINAL S C H E D U L E ' A/1 (To be filled in and signed by the Tenderer)

Schedule of deviations from Technical Specifications for ____________. We / I have carefully gone through the Technical Specification and we / I have satisfied ourselves / myself and hereby confirm that our / my offer strictly confirm to the requirements of the Technical Specification except for the deviations given below : Sr.No.

Description

Stipulations in specification

Deviation Offered

Remarks

___________________________________________________________ Signature : Name of Authorized signatory of the company

:

Name of the tendering Company

Date : Place:


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SCHEDULE OF REQUIREMENTS OF CARRIER EQUIPMENT TYPE ETL-41 OF ABB MAKE Sr.No. Description Quantity 1. 40Watt Single Channel, Fully Nos. Programmable Carrier Equipment Type ETL-41 of ABB Make, including 4-Wire table telephone for ETL, Dummy Load Print P3LK, 75 Ohm Cylindrical Load and 4 Nos. of UHF Gland , Emergency jack handset as per technical Specification.


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15 ABB-Make Carrier Terminal Type ETL 41

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