SPECICATION NO. ETI/PSI/144 (12/91) SPECIFICATION FOR ... - rdso

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- 26 - 6.2.5.3 The voltage at TSS and SP may rise to 30kV for short durations and the apparent power of the traction power transformer may go upto 200% for 5 minutes intermittently. 6.2.5.4 Current transducers shall be rated for a 100% overload for 5 minutes and short time current rating of 50 Amps for 5 second. The burden of voltage and current shall not normally be more than 4 VA. 6.2.5.5 Since the current transducers shell be connected in series with the operating coils of protective relays, it is, therefore, essential that loose connections or open circuiting shall be avoided so as to prevent damage to the CTs and render the protective system at the TSS ineffective. It shall, therefore, be ensured that: i) The transducer case is so designed that the current coil terminals are automatically short circuited in case the transducer is taken out. Labels shall be provided to notify this aspect prominently. ii) All terminal connections are rigid. iii) Wiring to the current coil of transducer is done with PVC insulated copper cable of cross section not less than 4 sq mm. 6.3 System alarms The system alarm that shall be provided include at least: i) Remote station defective In the event of partial or complete failure of the RTU to communicate with the master station due to failure of RTU, or on failure of individual I/O modules and other modules in the RTU, this alarm shall appear. The exact nature of fault shall be indicated on the VDU. ii) Master Station defective In the event of failure of any equipment at master station such as modem, CPU, bus driver, computer, mimic driving modules or any other items, this alarm shall appear. The exact nature of fault shall be indicated by LEDs on an indication panel or the individual module inside the equipment cabinet. iii) MDB panel fuse fail In the event of failure of the fuse provided inside the mimic panel for controlling the supply to various indication lamps/LEDs on the MDB, this shall appear.
6.4 Equipment capacity - 27 - 6.4.1 Number of controlled stations The number of controlled stations to be commissioned initially is indicated in the particular specification referred to in clauses 10 beroof. However, the SCADA equipment at RCC shall be designed and engineered to control about <strong>12</strong>0% of the number of stations to be commissioned initially. The extra capacity shall be available for expanding the system in future. It shall be possible to realize the extra capacity simply by adding the required functional modules in the spare sub racks of the mimic driver and incorporating. Necessary changes in the software and MDB at RCC, without affecting the existing system either physically or operationally. 6.4.2 Number of telecommands, telesignals and telemetered parameters (measurands) 6.4.2.1 The SCADA equipment shall be designed for the following capacity of telecommands, telesignals and telemetered parameters for a typical TSS, SSP, SP and ATP of a double line section. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - S. No. Controlled Telecommands Telesignals Measurands station - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 TSS 24* 88 8 2 SP 8* 20 4 3 SSP 8 <strong>12</strong> - 4 ATP - 8 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - * No of telecommands for faultlocator is not included, it is to be added where applicable. 6.4.2.2 The above figures may vary depending on the layout of TSS, SP, SSP and ATP in a particular section, which could have three or more tracks, the details of which will be contained in the particular specification referred to in clause-10 hereof. 6.4.2.3 The number of parameters to be commissioned initially may be less than the above figures and the balance designed capacity shall be available for future use. A typical requirement of telecommands, telesignals and telemetered parameters on a double line section is at Annexure-I.
Page 1 and 2: SPECIFICATION FOR SPECICATION NO. E
Page 3 and 4: 2.3 Atmospheric Conditions Maximum
Page 5 and 6: phases of the 220 or 132kV, three p
Page 7 and 8: main control and relay panel, 240V
Page 9 and 10: indicated by operation of Buchholz
Page 11 and 12: - 11 - ―PT fuse fail‖ indicatio
Page 13 and 14: - 13 - 5.8.8. The Railways will tap
Page 15 and 16: - 15 - (ii) There shall be two data
Page 17 and 18: 6.1.3. Mimic diagram board (MDB) -
Page 19 and 20: equipments status including manuall
Page 21 and 22: shall confirm in the offer that the
Page 23 and 24: 6.1.6 Data-logging printers - 23 -
Page 25: - 25 - 6.2.3.2 The ac supply will h
Page 29 and 30: - 29 - 6.5.2 Whenever the number of
Page 31 and 32: - 31 - channels and other such aids
Page 33 and 34: e so engineered that they are clear
Page 35 and 36: 6.12.4.4 The system shall also take
Page 37 and 38: where, Ln, Ln+l = kilometerage of t
Page 39 and 40: 7.2 The required quantity of instru
Page 41 and 42: - 41 - 11.4 Only after clear writte
Page 43 and 44: - 43 - c) Detailed step by step pro
Page 45 and 46: - 45 - ANNEXURE-I TYPICAL REQUIREME
Page 47 and 48: - 47 - ANNEXURE-2 SCHEDULE OF GURAN
Page 49 and 50: - 49 - ii) Battery voltage and ampe
Page 51 and 52: - 51 - ii) Limits (field settable)
Page 53 and 54: c) Number of controlled stations th
Page 55 and 56: 40. Level meters ( dB Meter) i) Mak
Page 57 and 58: ix) Rated accuracy limit factor 15
Page 59 and 60: - 59 -
Page 61 and 62: SS -TRACTION SUBSTAION. TP -AUTO TR
Page 63: - 63 -

SPECICATION NO. ETI/PSI/144 (12/91) SPECIFICATION FOR ... - rdso

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