overhead supply
1.Metal halide gas-discharge lamps possess the advantages of small sige,high luminous efficiency,long life good start quality,simply appending power supply .They are widely use in movie projectors and overhead projectors etc.The metal-halide gas-discharge lamps include metal halide lamps with dysposium iodide, mercury lamps metal halide lamps with scandium-sodium iodides and metal halide lamps with sodium-thal-lium-indium etc.
2.After expounding the power supply and current collection modes of the rolling stock in Shanghai UMT Pearl Line in terms of technology and economy, the author argues that two current collection modes shall be adopted for Shanghai UMT Pearl Line, i.e. a third rail collector be on skybridge while the overhead contact line on the ground.
3.In connection with the situation of application of hook type earthing resistance meter in the Transmission Division of Yichang Power Supply Bureau,taking account of the principle and the environmental requirement of measurement,the problems in application were proposed and analyzed as well.According to the different grounding structure of lightning protection for overhead transmission lines,the proper measuring method was suggested.
4.6 Compensation to Contractor for materials supplied by Contractor for incorporation into the permanent facility (excluding consumable, expendable, and small tools as outlined in Commercial Schedule G ? Small Tools/Expendable/Consumable/Safety Supply List and which cost Contractor less than $ 1,000.00 USD each, as they are included in the markups on labor rates) shall be at actual invoiced cost to Contractor, (exclusive of taxes) including transportation to the Work Site, as substantiated by invoices certified paid or by such documentation as may be required by Owner, plus a mark-up on the material costs only, for all profit and overhead expense of Contractor thereon, of ten percent ( 10%).
