Bharat Heavy Electricals Limited HIGH PRESSURE BOILER PLANT, TIRUCHIRAPPALLI 620 014. CONTROLS AND INSTRUMENTATION/FB DATA SHEET FOR MULTICORE, ARMOURED, CONTROL CABLE Project: Ennore Sez, 2 x 660 MW, Super Critical TPP, Cust. Nos. 1723 & 1724 Data sheet : DS:TCI:245-1.5-ARM/ENNORE SC, Rev. 01 Revision History Rev. Date Description Prepared Blessing Jany Churchil J Reviewed Engineering QA Blessing Jany Churchil J RM. Vairavan Approved V.M. Selvaraaj 00 29-05-2015 Initial Release -Sd- -Sd- -Sd- -Sd- 01 21-09-2017 Revised as per Customer Comments Sheet 1 of 7
Interconnection of field devices /sensors, local Push buttons, Solenoid valves, actuator drives to Local Junction Box and Local Junction box to the system panels for the below mentioned systems, as applicable. Application 1 Applicable Standards 2 Varieties of cable FSSS, Soot Blower Controls, Gravimetric Feeder Controls, Furnace temperature probe, CCTV system & Air Pre-heater system Reference Document - Cable scope document for C&I cables Drg. PE- DG-412-145-I003. IS-1554, IS-5831, IS-8130, IS-10418, IS- 10810, VDE-0815, IEC-332, IEC-754,IS- 3975, ASTM-D-2843, ASTM-D-2863, SS- 4241475 3 Core, 5 Core, 7 Core, 10 Core,12 core 16 Core & 18 Core (as applicable) 3 Voltage grade V 1100 4 Temperature Rating & Short circuit withstand Rating 5 Construction of cable 6 Conductor:- oc 70 160 As per Constructional diagram enclosed with this Data sheet a Area of Cross Section Sq.mm. 2.5 b of Strands / Strand Dia. (Finished cable) / mm 7/0.68 (Stranded & Non-compacted) c Material d Grade / Standard 7 Insulation :- a Material Annealed, Plain Copper Conductor High Conductivity, Electrolytic grade Copper to IS 8130 HR PVC Sheet 2 of 8
b Type and Standard Type-A, as per IS-5831 c Thickness (Nominal) mm As per IS-1554, Part-I d Method of application e Core Identification f Volume Resistivity as per IS-5831 8 Fillers (wherever applicable) 9 Inner Sheath :- a Material b Type and Standard cm Extruded 3 core Red, Yellow & Blue. 5 core Red, Yellow, Blue, Black & Grey. For cables having more than 5 cores All cores shall be Grey in Colour with Number Printing @ 50 mm interval. All the numbers shall be of the same colour which shall be in contrast with the colour of insulation. The numerals shall be legible and indelible. 1 x 10 13 @ 27 C & 1 x 10 10 @ 70 C Non-hygroscopic with FRLS property suitable for the operating temperature of the cable. Fillers shall not stick to the insulation and innersheath HR PVC Type-ST1 as per IS-5831 c Thickness (minimum) mm As per IS-1554 d Method of application e Colour Extruded BLACK 10 Armouring :- a Material b Standard c Direction of lay d Shape and dimension Galvanized Steel As per IS-3975 & IS-1554 Left Hand Single layer round steel wire 11 Outer Sheath :- Sheet 3 of 8
a Material 12 13 14 15 b Type and Standard c Method of application HR PVC With FRLS Properties Type-ST1 as per IS-5831 Extruded d Thickness (minimum) mm As per IS-1554 e Colour Cable Marking on Outer sheath Sequential marking on Outer sheath Tolerance on Outer diameter Tolerance on Outer diameter for the entire length BLACK Manufacturer s name, Year of manufacture, Type of Insulation, of cores & Conductor size, Voltage rating, Type of Cable, FRLS embossed @ 1 metre interval. Every 1 Metre for Progressive Length by printing. mm ± 2 mm 16 Ovality mm 1 17 Bending Radius minimu m 1 12 Times the OD of the Cable 18 Standard Packing Length metre 1000 19 Tolerance on standard packing length 20 Non-standard Length 21 Electrical s :- a b c d Conductor DC Resistance (max.) @ 20 C Short circuit rating of conductor for 1 second Insulation Resistance (min.) @20 C Test Voltage - Between Conductor- Conductor % ± 5 Last length shall be supplied in single length /km 7.41 KA 0.26 M /km 100 KV/ minute 22 FRLS Properties of Inner & Outer Sheath :- 3 KV for 5 Minute Sheet 4 of 8
a b c d Oxygen Index @ ambient temp. As per ASTM-D- 2863 Temperature Index @ oxygen index 21 As per ASTM-D-2863 Smoke density rating As per ASTM-D-2843 Acid gas generation per IEC 754-Part 1 As % Not Less than 29 C Not Less than 250 Shall not be more than 60 % % Shall not be more than 20% by weight e Flammability Tests 23 Special Requirements 24 Quality Plan 25 Packing Details As per approved Quality plan Outer sheath material shall have resistance to water, fungus, rodent and termite attack CI:QA:1723:CQP:03 (Approved Revision) Cables shall be supplied in Nonreturnable wooden drums of heavy construction. The surface of the drum and the outer most cable layer shall be covered with waterproof cover. Both the ends of the cables shall be properly sealed with heat shrinkable PVC/Rubber caps secured by U nails so as to eliminate ingress of water during transportation, storage and erection. Wood preservative anti-termite treatment shall be applied to the entire drum. Wooden drums shall comply with IS-10418. Sheet 5 of 8 Each drum shall carry Manufacturer s name, Type of cable, Voltage grade, Year of manufacture, Type of insulation, Number of cores & size of conductor, Cable code, Length of cable, Length on drum, Approximate gross mass, IS/IEC number, ISI mark. A tag containing same information shall be attached to
OUTER SHEATH CONDUCTOR WITH INSULATION TYPICAL CONSTRUCTIONAL DIAGRAM INNER SHEATH ARMOURING OUTER SHEATH OF A 5 CORE CONTROL CABLE the both ends of the cable. An arrow and suitable accompanying wording shall be marked on one end of the reel indicating the direction of rotation in which it should be rolled. For other cables, the respective number of cores will be laid up (Lay of cores shall be as per IS) along with fillers. Applicability of fillers will be decided by the vendor for all the varieties of cables. INNER SHEATH Position, Shape and Number of fillers will be decided by the vendor for all the OUTER SHEATH varieties of cables. FOR OTHER CABLES, THE RESPECTIVE NUMBER OF CORES SHALL BE LAID UP ALONG WITH FILLERS (IF APPLICABLE), Type of Armour will be Single layer round steel wire for all varieties of cables. Sheet 6 of 8
SITE CONDITIONS Atmosphere Over all Quantity Tolerance Guarantee General Confirmation to be given by the vendor. Dusty, Salty, corrosive & Heavily polluted (+) 0 / (-) 2 % A Guarantee Certificate for 18 months of trouble-free operation/performance from the date of shipment or 12 months from the date of commissioning whichever is earlier shall be furnished. All the parameters shall comply with the respective IS, wherever applicable. 1. Sub-Delivery Enquiry Deviation format filled with No Deviation, indicating the Data sheet and Quality Plan reference and shall be furnished along with the offer. 2. Technical deviation/non-conformance indicated elsewhere in the offer will not be considered. 3. In the absence of Sub-Delivery Enquiry Deviation format, the vendor s offer will not be evaluated. TOLERANCE ON OUTER DIAMETER Definition:- This is the allowable Limits on the diameter of the actual cable from the Data sheet value /Design value. The Data sheet indicates 2 mm. This means that if the Data sheet value / Design value of the cable diameter is X mm, then all the actual cable diameter measured over the entire length / quantity shall fall within the Upper Limit X + 2 mm and the Lower Limit X - 2 mm. However, the following clauses must also be satisfied. Example:- Let the Data sheet value / Design value of the cable diameter be 14 mm( X ) Then, the measurements of the actual cable diameter taken over the entire length shall fall between the limits 16 mm and 12 mm (X + 2) (X - 2) Sheet 7 of 8
TOLERANCE ON OUTER DIAMETER FOR THE ENTIRE LENGTH Definition:- This is the maximum allowable difference between the Highest actual cable diameter and the Lowest actual cable diameter measured over a drum length. The Data sheet indicates 1 mm. This means that if the Highest actual cable diameter is say, D1 mm, and the Lowest actual cable diameter is D2 mm, then, D1 - D2 shall be maximum 1 mm and D1 and D2 shall also fall within the Upper and Lower limits as above. Example:- Let the Highest actual cable diameter measured be 16 mm (D1) Let the Lowest actual cable diameter measured be 15 mm (D2) Then, Tolerance for the entire length = 16 mm - 15 mm = 1 mm (D1) (D2) Comment:- As the Highest actual cable diameter and Lowest actual cable diameter falls within the Upper and Lower Limits as above, and the difference between them is 1 mm maximum, the diameter values are acceptable. OVALITY Definition:- This is the maximum allowable difference between the measurements of the actual cable diameter in x and y directions in any particular section. The Data sheet indicates 1 mm. This means that if the actual cable diameters measured are say, D3 mm, and D4 mm, in x and y directions respectively in one particular section. Then, the difference between D3 and D4 shall be maximum 1 mm. Also D3 and D4 shall fall within the Upper and Lower limits as above. Example:- Let the actual cable diameter in x direction in one section be 16 mm (D3) Let the actual cable diameter in y direction in the same section be 15 mm (D4) Then, Ovality =16 mm - 15 mm = 1 mm (D3) (D4) Comment:- As the actual cable diameters measured in x and y directions of the same section falls within the Upper and Lower limits as above, and the difference between them is 1 mm maximum, the diameter values are acceptable. -------ooooooooo------- Sheet 8 of 8