【正文】 ost PVC sheath of cables. Tests for FRLS:1. Flammability test: The cables shall pass the requirements of IEEE 383/1974 fire propagation test in this regard. Shall also pass class F3SS424175 Swedish Chimney Test. 2. Smoke generation by sheath under fire (density of smoke): When tested per UITPP test method or ASTMD2843/77,the cable shall meet the requirement of minimum 40% light transmittance (Max. 60% smoke density)3. Acid gas generation of sheath during fire: When tested as per IEC754I, the maximum acid gas should be less than 20 % by weight.4. Oxygen index test: The oxygen index when tested under ASTMD 2863 shall be minimum 29 at room temperature.5. Water immersion test: Water immersion test shall be carried out as per VDE 0815.6. Other tests:i) Fire resistance test to IS5831 for 20 minutes. (PVC insulation amp。 sheath of electrical cables)ii) Thermal stability at 200176。C to IEC540 for100 metres.iii) Rodent and termite proof.iv) Heat shock test to IEC502.Electrical properties at 20176。Ca) Conductor resistance of the loop not greater Ohms/Kmb) Insulation resistance not less than 00 Meg Ohms/Km c) Mutual capacitance at kHz not greater than 00 nF/Kmd) Test Voltage – conductor /conductor and conductor / shield 2000 Vrmse) Characteristic impedance at kHz 370 Ohmsf) Image attenuation at kHz dB/100 mg) Image attenuation at 10 kHz dB/100 m h) Cross talk attenuation at kHz greater than 70 dB/Kmi) Coupling capacitance at kHz not greater than 200 pF/100 mj) High Voltage Test duration : Conductor to conductor 2000 Vrms, 50 Hz for 1 min. Conductor to shield 2000 Vrms, 50 Hz for 1 min. b) Voltage Grade amp。 Type 650/1100 V grade, multicore overall shielded instrumentation cable.Conductor: Nominal area concentric lay annealed tinned high conductivity dia copper conductorConductor Size: Overall dia of each conductor including insulation should be between to mm.Marking: Marking of length of the cable shall be of every meter interval on the outermost PVC sheath of cables.Other particulars are same as stipulation above.c) kV grade single and multipair twisted and shielded type Conductor Size mm2 Other particulars are same as stipulation above. Thermocouple extension cables shall be used to interconnect thermocouples to control and monitoring systems. The type of Thermocouple extension cable shall depend on the type of thermocouple being connected to the control and monitoring systems in any one of the following ways: i) The extension cables shall run from thermocouple head to the control and monitoring system。 ii) Connecting the thermocouple extension cable at the JB end to temperature transmitter, which shall be convert the thermocouple signal to a standard current signal for transmission to the control and monitoring system. n Local Control Panels a. Local control panels and power distribution boards shall be furnished as specified herein. The panel general arrangement and fabrication drawings shall be finalized and approved by the Owner during detailed engineering stage. All panels shall be furnished as per final Owner approved drawings releasing the panels for construction and meeting the requirements of this specification.b. The panels and equipment furnished shall fully conform to all applicable codes, Zambian and International Standards.c. All work related to manufacture and assembly of panels including panel fabrication painting, wiring, tubing, installation of all specified panel mounted accessories shall be pleted and the panels shall be fully tested prior to shipment to the project site. The manufacture and testing of panels as stated above shall be done in the manufacturing works of a qualified manufacturer acceptable to the Owner.d. All panels shall fully conform to design and construction requirements stipulated in this section.e. All necessary accessory items and electrical materials shall be installed in the control panels as required for pleteness of the panels by the Contractor. These will include but not be limited to the following:i) Terminal blocks with identification tags.ii) Wire, shielded single conductor and multi conductor cable.iii) Terminal lugs and wire markers at both ends of all wires.iv) Wire supports, wiring trays and conduits.v) Ining isolating switch fuse and distribution fuse boards. vi) Nameplates and mimic buses for instruments and devices mounted on the front of the control boardsvii) Piping, tubing, fittings and accessoriesviii) Supports for mounting of equipment in panels/ enclosures.ix) Panel hardware including vibration isolating devicesx) Grounding bus All spare contacts of control switches, push buttons, indication lamps shall be wired upto respective panel terminal blocks. Termination Cabinets/Marshalling Cabinets Termination cabinets shall be supplied for terminating all cables originating from the field and for distributing the signals to different functional panels and cubicles. The cabinet shall have internal illumination lighting fixtures. The plug socket shall be mounted on hinged plates to provide an access to the rear pins of the plugs. Ining cables from the field shall be terminated in suitable terminal blocks in logical sequence. Prefabricated cables with plug in connectors at both ends shall be used for extending the signals to the functional panels. Matching plug sockets shall be provided in the termination cabinets for terminating the plugs. Terminal blocks shall be located inside the cabinets on support wings fabricated of metal plates. General features of termination cabinets and accessories shall conform to the general design and construction specification of panels. Construction of Panels, Cubicles amp。 Enclosures All panels, cubicles, consoles and enclosures furnished as per this specification shall be of free standing type and shall be constructed of specified gauge of steel plates.